taxonID	type	description	language	source
03FA1806FF92B846FF14FB34FC972933.taxon	materials_examined	Type species: Leptopsaltria watanabei Matsumura, 1907 (Taiwan).	en	Emery, David L., Lee, Young June, Pham, Hong-Thai (2017): Descriptions of four new species of Semia Matsumura (Hemiptera: Cicadidae: Psithyristriini) from Vietnam, with a key to the species of Semia. Zootaxa 4216 (2): 153-166, DOI: 10.5281/zenodo.230748
03FA1806FF92B841FF14FA46FDF62F48.taxon	materials_examined	Type material. Holotype: 1 ♂, Kon Tum Prov., Ngoc Linh Nature Reserves, 1900 m, 15 ° 00 ’ 39 ” N, 107 ° 57 ’ 53 ” E, 20 IV 2016 (typed ink label) (VNMN; E- 00105). Paratypes: 4 ♂♂, 2 ♀♀, same data as holotype (VNMN; E- 00106 - 111); 2 ♂♂, 2 ♀♀, same data as holotype (AM; K. 493586 - 89); 5 ♂♂, 4 ♀♀, same data as holotype (DE). Other material. 7 ♂♂, same location, 15 III 2016 (DE); 1 ♂, Thua Thien Hue Prov., Bach Ma National Park, 1400 m, 16 ° 11 ’ 51 ” N, 107 ° 51 ’ 36 ” E, 20 III 2016 (DE).	en	Emery, David L., Lee, Young June, Pham, Hong-Thai (2017): Descriptions of four new species of Semia Matsumura (Hemiptera: Cicadidae: Psithyristriini) from Vietnam, with a key to the species of Semia. Zootaxa 4216 (2): 153-166, DOI: 10.5281/zenodo.230748
03FA1806FF92B841FF14FA46FDF62F48.taxon	description	Description of male (Figs 1 A – B, 2 A, 3 A – B). Head mostly brown, brown anteriorly with irregular black markings around ocelli and margins of eyes; ocelli pink, distance between lateral ocellus and corresponding eye much longer than that between lateral ocelli; postclypeus with brown marking along anterior third of midline, black horizontal striations along transverse grooves mid-anteriorly, brown patch either side of midline over central third, and shiny black patch posteriorly; anteclypeus mainly brown with black anterior and posterior markings; gena and lorum mostly black with lateral margins brown; rostrum brown, black at tip, extending to anterior margin of abdominal sternite II; compound eyes dark red; antennae black; supra-antennal plates black. Thorax: Pronotum mostly pale brown-ochraceous with black markings outlining two midline brown triangles and black patch along parapsidal sutures and lateral margins; pronotal collar evenly brown-red to ochraceous, expanded laterally. Mesonotum olive-brown with black median stripe, black patterned motif on submedian sigella, impressive black patterning stippled over lateral sigella, black strip on distal half of lateral margin, and black scutal depressions. Cruciform elevation dark brown with black anterior borders, lateral depressions brown, and golden hairs sparsely spread. Metanotum dark brown. Legs variously patterned brown and black; coxa brown with anterior black stripes; trochanters brown; fore femur with equivalent black-brown-black annular markings and with primary spine prominent, erect, black; mid and hind femora with increasingly brown central segments and black extremities; tibia similarly patterned to femora; tarsi brown anteriorly, black at tips; claws black. Meracanthus narrow, striped brown and black, sharply pointed, overlapping anterior half of corresponding operculum. Wings hyaline, forewing with faint milky glaze proximal to nodal line, veins brown to black, cream at node; fore wing with infuscations along crossveins r, m, r-m, and m-cu, vein CuA 2, bases and apices of veins RA 2, RP, M 1 - 4, and CuA 1, nodal line intersection, and outer margins of apical cells 1 – 7; basal membrane pale anteriorly, blackening posteriorly; basal cell orange-brown; hind wing with 6 apical cells; with continuous infuscations along proximal veins of apical cells 1 – 3 and outer margins of apical cells 1 – 6; plaga grey, covering jejum, with ovoid translucent area near distal margin. Opercula pale yellowish brown, triangulate, ridged laterally, not extending beyond posterior margin of sternite II, rounded and meeting on midline. Timbals (Fig. 2 A) with 5 long ribs; ribs 1 – 4 dark brown, full length and fused ventrally, thinner through dorsal half to prominent central expansion, thicker ventrally, pale brown to yellow, interspersed by three intercalary ribs; rib 5 discontinuous centrally. Timbal plate prominent when timbal plate removed; timbal dome pale brown, extending over half width of timbal, inverted distally. Apodeme pit small, slit like, conspicuous. Abdomen with tergites mainly brown, darker medially, lighter laterally, darker brown along posterior and lateral margins; tergite 1 dark brown medially with black anterior margin; timbal covers pale brown, ovoid and convex, completely covering timbals; tergite 2 with black anterior margin, brown over remainder; tergites 3 – 7 brown with lateral golden hairs; tergite 8 black; sternites I – VII dark brown, translucent, blackish laterally; tergite VIII black, brown along lateral third. Genitalia (Fig. 3 A – B): Pygofer trapezoid in ventral view; dorsal beak short, rounded, not extending to anal styles; distal shoulder acute, curved laterally; uncal lobe long, with inner margins separating towards apex, apex bevelled inwards, rounded at tip, gently curved in lateral view, with lateral projection short, rounded; basal lobe stout and curved inward in ventral view; aedeagus slender, short, entirely within uncus. Description of female (Fig. 1 C, D). Head and thorax similar to male, with generally darker coloration; pronotal collar olive green; mesonotum distinctly olive green with similar black patterns to male. Abdomen dark brown; tergite 1 brown; tergites 2 – 3 with black anterior margins, brown posteriorly; tergites 3 – 8 black-brown medially, browner laterally with distinct golden hairs; sternites I – VII dark brown to black, black mottling along anterior margins; abdominal segment 9 black, dark brown laterally, with dark green strip along dorsal midline. Ovipositor black, dark brown at tip, not extending beyond abdomen. Measurements (12 males, 8 females). Body length: male 43.4 – 46.8 (45.2); female 34.9 – 37.4 (36.0). Length of head + thorax: male 17.0 – 18.2 (17.4); female 15.6 – 16.4 (16.0). Length of abdomen: male 26.4 – 28.6 (27.8); female 18.4 – 21.0 (19.9). Fore wing length: male 50.1 – 52.9 (51.0); female 50.6 – 52.8 (51.6). Head width: male 11.3 – 12.2 (11.7); female 10.7 – 12.0 (11.6). Pronotum width: male 12.8 – 14.6 (13.4); female 13.2 – 14.5 (13.8). Abdomen width: male 14.1 – 16.6 (15.4); female 13.2 – 15.0 (14.1).	en	Emery, David L., Lee, Young June, Pham, Hong-Thai (2017): Descriptions of four new species of Semia Matsumura (Hemiptera: Cicadidae: Psithyristriini) from Vietnam, with a key to the species of Semia. Zootaxa 4216 (2): 153-166, DOI: 10.5281/zenodo.230748
03FA1806FF92B841FF14FA46FDF62F48.taxon	etymology	Etymology. The name “ magna ” (Latin feminine adjective for large) is appropriate for the size of this species, the largest of the Semia species described to date. Distinguishing features. Semia magna sp. nov. is readily distinguished from all other Semia species except S. klapperichi by its larger size (body length> 43 mm); the fore wing radial crossvein which is nearly right-angled to the outer margin of the fore wing; and the well developed timbal cover which is distinctly longer than the tergite 2. With these very distinguishing characteristics of the two species, S. magna and S. klapperichi can be grouped separately from other congeners under the name of ' the S. klapperichi species group'. This species group is thought to be very closely related to the Pomponia linearis species group of the genus Pomponia Stål, 1866, which has these characters and also the well-developed anterolateral pronotal collar as the common characters. Semia magna sp. nov. can be distinguished from S. klapperichi by the following combination of characters: less pronounced black infuscations on fore and hind wings compared with very thick infuscations in S. klapperichi; inner area of pronotum largely light coloured compared with mostly black inner area in S. klapperichi; uncal lobes with distinctly narrowed apices, with rounded apices in S. klapperichi; majority of mesonotum pale brown, black in S. klapperichi; ventral postclypeus and anteclypeus with conspicuous pale brown markings, which are mostly black in S. klapperichi; opercula light brown, dark brown to black on S. klapperichi.	en	Emery, David L., Lee, Young June, Pham, Hong-Thai (2017): Descriptions of four new species of Semia Matsumura (Hemiptera: Cicadidae: Psithyristriini) from Vietnam, with a key to the species of Semia. Zootaxa 4216 (2): 153-166, DOI: 10.5281/zenodo.230748
03FA1806FF92B841FF14FA46FDF62F48.taxon	distribution	Distribution, habitat, and seasonality. This species has been found on Ngoc Linh Nature Reserves in Kon Tum Province and 350 km north at Bach Ma National Park, Thua Thien Hue Province. At both locations, the species co-exists with S. spiritus sp. nov. and S. pallida sp. nov. on Bach Ma National Park (Fig. 4). Specimens have been collected from March to May.	en	Emery, David L., Lee, Young June, Pham, Hong-Thai (2017): Descriptions of four new species of Semia Matsumura (Hemiptera: Cicadidae: Psithyristriini) from Vietnam, with a key to the species of Semia. Zootaxa 4216 (2): 153-166, DOI: 10.5281/zenodo.230748
03FA1806FF95B84FFF14FC5EFD302FD5.taxon	materials_examined	Type material. Holotype: ♂, Kon Tum Prov., Ngoc Linh Nature Reserves, 1900 m, 15 ° 00 ’ 39 ” N, 107 ° 57 ’ 53 ” E, III 2016; (typed ink label) (VNMN; E- 00112). Paratypes: 2 ♂♂, Lam Dong Prov., Bidoup Nui Ba National Park, 2000 m, 12 ° 06 ’ 43 ” N, 108 ° 57 ’ 53 ” E, 10 V 2013; 6 ♂♂, 1 ♀, same location as holotype, 20 IV 2016 (VNMN; E- 113 - 121), 2 ♂♂, same data as holotype (AM, K 493593 - 94); 1 ♀, Lai Chau Prov., 1600 m, 22 ° 18 ' 42 " N 102 ° 09 ' 22 " E, 18 V 2015; 2 ♂♂, Thua Thien Hue, Bach Ma National Park, 1400 m, 16 ° 11 ’ 51 ” N, 107 ° 51 ’ 36 ” E, 25 IV 2016 (DE). Other Material. 5 ♂♂, Kon Tum Prov., Ngoc Linh Nature Reserves, 1900 m, 15 ° 00 ’ 39 ” N, 107 ° 57 ’ 53 ” E, IV 2014 (DE); 7 ♂♂, same location, 15 V 2015 (DE); 2 ♂♂, Lam Dong, Bidoup Nui Ba National Park, 2000 m, 12 ° 06 ’ 43 ” N, 108 ° 57 ’ 53 ” E, 10 V 2013 (DE); 2 ♂♂, Thua Thien Hue, Bach Ma National Park, 1400 m, 16 ° 11 ’ 51 ” N, 107 ° 51 ’ 36 ” E, 25 IV 2016 (DE).	en	Emery, David L., Lee, Young June, Pham, Hong-Thai (2017): Descriptions of four new species of Semia Matsumura (Hemiptera: Cicadidae: Psithyristriini) from Vietnam, with a key to the species of Semia. Zootaxa 4216 (2): 153-166, DOI: 10.5281/zenodo.230748
03FA1806FF95B84FFF14FC5EFD302FD5.taxon	description	Description of male (Figs 2 B, 3 C – D, 5 A – B). Head mostly brown, brown anteriorly, with black markings around ocelli; ocelli pink; postclypeus brown, with black “ V ” marking dorsally, black horizontal striations along transverse grooves mid-anteriorly, pale brown patch on either side of midline over central third, and prominently shiny black marking over posterior third; anteclypeus mainly brown; gena and lorum dark brown; rostrum brown, black at tip, extending to mid-sternite II; compound eyes dark brown; antennae light brown; supra-antennal plates brown. Thorax: Pronotum mostly pale brown-ochraceous, with black markings outlining anterior brown stripe and posterior triangle marking on midline, darker brown patches laterally along ridges between parapsidal sutures, and black strip along lateral border; pronotal collar evenly brown-red to ochraceous but greenish on lateral margins, with median black spot on posterior margin, expanded laterally. Mesonotum ranging from light to olive-brown, with black median stripe, black patterned motif on submedian sigella on most specimens, but central area olive brown on majority of specimens from Bach Ma Mountain, with dull black pattern radiating over lateral sigilla and reddish brown patch along lateral margin; scutal depressions black; cruciform elevation light brown, with lateral depressions dark and golden hairs sparsely spread. Metanotum dark brown. Legs predominantly light brown; coxa brown with anterior black stripes; trochanters brown; femora with small black markings at ends, with primary spine erect, brown; tibiae similarly patterned to femora, but black around tarsi; tarsi brown anteriorly, blackish at tips; claws dark brown. Meracanthus narrow, pale brown, sharply pointed, overlapping anterior half of corresponding operculum. Wings hyaline, veins cream to brown, cream at node; fore wing with infuscations along crossveins r, m, r-m, and m-cu, vein CuA 2, bases and apices of veins RA 2, RP, M, M 1 - 4, and CuA 1, nodal line intersection, and outer margins of apical cells 1 – 7; basal membrane uniformly grey; basal cell translucent; hind wing with 6 apical cells; with continuous infuscations along proximal veins of apical cells 1 – 3 and light infuscations along outer margins of apical cells 1 – 3 in most specimens; plaga grey, covering jejum, with translucent area near distal margin. Opercula pale yellowish brown, with black lateral margins; spatulate, not extending beyond posterior margin of sternite II, rounded medially, almost meeting on midline. Timbals (Fig. 2 B) with 5 long ribs; ribs 1 – 4 dark brown, full length fused ventrally, thinner through dorsal half to prominent central expansion, thicker ventrally, pale brown to yellow, interspersed by three intercalary ribs; rib 5 discontinuous centrally. Timbal plate prominent; timbal dome pale brown, extending over half width of timbal, inverted distally. Apodeme pit small, slit like, conspicuous. Abdomen with tergites mainly brown, darker medially, lighter laterally, with black longitudinal stripe near lateral margins; tergite 1 brown; timbal covers pale brown, triangulate and convex, completely covering timbals; tergites 2 – 7 brown; tergite 8 dark brown; sternites pale brown, translucent. Genitalia (Fig. 3 C – D): Pygofer trapezoid in ventral view; dorsal beak short, rounded, protruding upwards in lateral view, not extending to elongated anal styles; distal shoulder acute, directed and curved laterally; uncal lobe long, with apposed inner margins, with lateral margins angled anteriorly towards rounded apex, spatulate and gently curved in lateral view; basal lobe stout and curved inward in ventral view. Aedeagus short, concealed within uncus. Description of female (Fig. 5 C – D). Head and thorax similar to male, with generally darker and greenish coloration; pronotal collar olive green, ampliate laterally; mesonotum distinctly olive green with similar black patterns to male. Wings similar to male, darker infuscations along posterior margins of apical cells 1 – 6. Abdomen dark brown; tergite 1 brown; tergites 2 – 3 with black anterior margins, brown posteriorly; tergites 3 – 8 black-brown medially, browner laterally with distinct golden hairs; sternites I – VII dark brown to black, black mottling along anterior margins; abdominal segment 9 black, dark brown laterally, green along dorsal midline. Ovipositor dark brown, not extending beyond abdomen. Measurements (12 males, 2 females). Body length: male 35.2 – 39.1 (36.8); female 27.8 – 31.0 (29.9). Length of head + thorax: male 13.8 – 16.0 (14.7); female 13.4 – 14.9 (14.2). Length of abdomen: male 19.6 – 23.8 (22.0); female 14.4 – 16.1 (15.2). Fore wing length: male 39.6 – 44.8 (42.0); female 41.5 – 44.5 (42.9). Head width: male 8.3 – 9.3 (8.9); female 8.8 – 9.2 (9.0). Pronotum width: male 9.9 – 11.1 (10.5); female 9.0 – 9.4 (9.2). Abdomen width: male 12.0 – 13.9 (12.8); female 11.8 – 11.8 (11.8).	en	Emery, David L., Lee, Young June, Pham, Hong-Thai (2017): Descriptions of four new species of Semia Matsumura (Hemiptera: Cicadidae: Psithyristriini) from Vietnam, with a key to the species of Semia. Zootaxa 4216 (2): 153-166, DOI: 10.5281/zenodo.230748
03FA1806FF95B84FFF14FC5EFD302FD5.taxon	etymology	Etymology. The name “ spiritus ” (Latin masculine noun for spirit) derives from the Vietnamese “ Linh ” (spirit, soul), reflecting the predominant location of this species on Ngoc Linh Nature Reserves. Distinguishing features. Males of S. spiritus sp. nov. lack the continuous infuscation along the posterior margin of the hind wing apical cells 1 – 6, so are readily distinguished from S. klapperichi, S. majuscula, S. magna sp. nov., and S. tibetensis. Semia spiritus sp. nov. (body length> 35.2 mm) is larger than S. spinosa (body length <30 mm), S. gialaiensis (body length <34 mm), S. albusequi sp. nov., (body length <30 mm), and the single male of S. brevidilata (body length 34 mm). Semia spiritus sp. nov. lacks the distinct white pollinosity present on the tergite 8 of S. watanabei. The large timbal covers on S. spiritus sp. nov. contrast with rudimentary covers which leave the majority of timbals exposed in S. lachna, S. brevidilata, and S. watanabei. The dark brown coloration of S. spiritus sp. nov. contrasts with the pallor of S. pallida sp. nov. and the olive-brown markings on S. hainanensis. Semia spiritus sp. nov. also lacks the black markings seen laterally on the pronotal collar and tibiae of S. hainanensis.	en	Emery, David L., Lee, Young June, Pham, Hong-Thai (2017): Descriptions of four new species of Semia Matsumura (Hemiptera: Cicadidae: Psithyristriini) from Vietnam, with a key to the species of Semia. Zootaxa 4216 (2): 153-166, DOI: 10.5281/zenodo.230748
03FA1806FF95B84FFF14FC5EFD302FD5.taxon	distribution	Distribution, habitat, and seasonality. This species has been found in Central Vietnam at Bach Ma National Park and Ngoc Linh Nature Reserves and 500 km southwards at Bidoup Nui Ba National Park (Fig. 4). Specimens have been collected between March and May.	en	Emery, David L., Lee, Young June, Pham, Hong-Thai (2017): Descriptions of four new species of Semia Matsumura (Hemiptera: Cicadidae: Psithyristriini) from Vietnam, with a key to the species of Semia. Zootaxa 4216 (2): 153-166, DOI: 10.5281/zenodo.230748
03FA1806FF9BB84DFF14FC25FD30280D.taxon	materials_examined	Type material. Holotype: ♂, Lam Dong Prov., Bidoup Nui Ba National Park, 2000 m, 12 ° 06 ’ 43 ” N, 108 ° 57 ’ 53 ” E, 10 V 2013 (at light) (VNMN; E- 00122). Paratypes: 2 ♂♂, 1 ♀, same data as holotype (AM, K 493590 - 92); 3 ♂♂, 1 ♀, same location, 20 III 2016; 3 ♂♂, Khanh Hoa Prov., Hon Ba Nature Reserves, 1500 m, IV 2013 (VNMN; E- 00123 - 129); 2 ♂♂, 4 ♀♀, Thua Thien Hue Prov., Bach Ma National Park, 1400 m, 16 ° 11 ’ 51 ” N, 107 ° 51 ’ 36 ” E, 20 III 2016 (at light); 1 ♂, Nghe An Prov., Pu Mat National Park, 1200 m, 19 ° 02 ’ 21 ” N, 104 ° 45 ’ 50 ” E, 20 IV 2014 (DE). Other Material. 4 ♂♂, Lam Dong Prov., Lac Duong, Bidoup Nui Ba National Park, 2000 m, 12 ° 06 ’ 43 ” N, 108 ° 57 ’ 53 ” E, 20 IV 2016, (at light) (DE).	en	Emery, David L., Lee, Young June, Pham, Hong-Thai (2017): Descriptions of four new species of Semia Matsumura (Hemiptera: Cicadidae: Psithyristriini) from Vietnam, with a key to the species of Semia. Zootaxa 4216 (2): 153-166, DOI: 10.5281/zenodo.230748
03FA1806FF9BB84DFF14FC25FD30280D.taxon	description	Description of male (Figs 6 A – B). Entire body light grey-brown and covered with whitish pollinosity (Fig. 6 A). Head mostly light grey with black markings between compound eyes and ocelli, black median line, and black spot posterior to eye; ocelli light orange; postclypeus brown dorsally, black medially; ventral postclypeus pale orange with dark brown horizontal striations along transverse grooves mid-anteriorly, brown midline, thin black surrounds, pale brown patch over remainder, and prominent white pollinosity spread; anteclypeus mainly brown; gena and lorum light brown, with medial margin black; rostrum pale brown, black at tip, extending to mid-sternite II; compound eyes reddish brown; antennae light brown; supra-antennal plates light brown. Thorax: Pronotum mostly pale brown-ochraceous with prominent white pillinosity, midline brown markings with black borders; parapsidal sutures black; pronotal collar evenly orange-brown, expanded laterally. Mesonotum olive-brown; submedian sigella margins black, dull black pattern radiating over lateral sigella; scutal depressions black; cruciform elevation light brown, with lateral depressions darker brown and white pollinosity. Metanotum light brown. Legs predominantly light brown; coxa brown; trochanters brown; femora light brown, black at extremities, with primary spine small, obtuse; tibiae similarly patterned to femora, black at centre and extremities, with spines black; tarsi brown anteriorly, blackish at tips; claws black. Meracanthus narrow, pale brown, sharply pointed, overlapping anterior half of corresponding operculum. Wings hyaline; costal vein green-brown proximal to node, olive green distally; veins cream to brown, with white pollinosity proximal to intermodal line; fore wing with infuscations along crossveins r, m, r-m, and m-cu, vein CuA 2, junction of veins CuP + 1 A and 2 A + 3 A, bases and apices of veins RA 2, RP, M, M 1 - 4, and CuA 1, nodal line intersection, and outer margins of apical cells 1 – 7; basal membrane uniformly light grey; basal cell translucent; hind wing with 6 apical cells; with infuscations along proximal veins of apical cells 2 – 3, absent from margins of apical cells 1 – 6; plaga white, covering jejum, with translucent area near distal margin. Opercula light brown under white pillosity, with black lateral margins; spatulate, not extending beyond posterior margin of sternite II, rounded medially, almost meeting on midline. Timbals (Fig. 2 C) with 5 long ribs; ribs 1 – 4 dark brown, full length, fused ventrally, thinner through dorsal half to prominent central expansion, thicker ventrally, pale brown to yellow, interspersed by four intercalary ribs; rib 5 discontinuous centrally. Timbal plate prominent; timbal dome pale brown, extending over half width of timbal, inverted distally. Apodeme pit slit-like, conspicuous. Abdomen with tergites mainly brown, darker medially, lighter laterally, with black longitudinal stripe along lateral margins; tergite 1 brown;, timbal covers pale brown, triangulate and convex, covering around two-thirds of timbals; tergites 2 – 7 brown; tergite 8 dark brown; sternites I – VI pale brown, translucent, white pollinosity over lateral half; sternite VII dark brown to black. Genitalia (Fig. 3 E – F). Pygofer rectangular in ventral view; dorsal beak short, pilose, rounded, not extending posteriorly to anal styles; distal shoulder inconspicuous, rounded, pilose; uncal lobe dark brown posteriorly, becoming pale brown towards apex, short, with inner margins becoming separated from base to apex and lateral margins rounded at apex, bevelled posteriorly towards midline to form a “ V ”, strongly curved in lateral view; basal lobe stout, solidly curved inward in ventral view. Aedeagus short, entirely within uncus. Description of female (Fig. 6 C – D). Head and thorax similar to male, with generally darker and greenish coloration; pronotal collar olive green, ampliate laterally; mesonotum olive green with similar black patterns to male. Abdomen dark brown; tergites brown, black on lateral margins; tergite 1 ochraceous; tergites 2 – 8 ochraceous, darker medially, lighter laterally; sternite I pale brown, sternites II – VII light brown becoming darker posteriorly; abdominal segment 9 ochraceous, with black stripe adjacent to midline and brown dorsal midline. Ovipositor dark brown, black at tip, not extending beyond abdomen. Measurements (12 males, 6 females). Body length: male 33.0 – 36.6 (35.3); female 26.2 – 31.0 (28.3). Length of head + thorax: male 12.4 – 13.8 (13.4); female 12.2 – 14.5 (13.4). Length of abdomen: male 20.7 – 23.0 (21.9); female 14.0 – 16.51 (14.9). Fore wing length: male 34.4 – 41.2 (38.9); female 38.2 – 44.5 (40.4). Head width: male 8.0 – 9.4 (8.6); female 8.3 – 9.2 (8.9). Pronotum width: male 9.3 – 10.9 (10.0); female 9.0 – 10.4 (9.7). Abdomen width: male 11.5 – 12.7 (12.0); female 10.1 – 11.8 (11.0).	en	Emery, David L., Lee, Young June, Pham, Hong-Thai (2017): Descriptions of four new species of Semia Matsumura (Hemiptera: Cicadidae: Psithyristriini) from Vietnam, with a key to the species of Semia. Zootaxa 4216 (2): 153-166, DOI: 10.5281/zenodo.230748
03FA1806FF9BB84DFF14FC25FD30280D.taxon	etymology	Etymology. The name “ pallida ” (Latin feminine adjective) refers to the pale grey coloration of this species, emanating in part from the extensive white pollinosity over the entire body, giving it a “ ghostly ” appearance. Distinguishing features. The grey coloration of S. pallida sp. nov. distinguishes it from all other Semia species which are pale, olive, or dark brown. Compared to those Semia species lacking continuous infuscations along hind margins of the apical cells 1 – 6 (S. brevidilata, S. hainaensis, S. spinosa, S. spiritus sp. nov., S. albusequi sp. nov., and S. watanabei), S. pallida sp. nov. (body length 33 – 37 mm) is smaller than S. hainanensis (body length> 37 mm) and larger than S. spinosa and S. albusequi sp. nov. (body lengths <30 mm). While S. pallida sp. nov. is slightly larger than S. gailaiensis (body length 32.8 – 33.6 mm), the opercula of S. gailaiensis meet in the midline while those of S. pallida sp. nov. are clearly separated. The rounded ventral apices on the uncal lobes of S. brevidilata, the lateral “ spine-like ” projection from the uncus of S. spinosa, the ornate lateral projections of the uncal apices in S. lachna, the darker lateral uncal projections on S. gialaiensis, and the rectangular appearance of the apical lobes of S. watanabei contrast with the “ V-shaped ” angulation produced at the apices of the uncal lobes on S. pallida sp. nov. Semia pallida sp. nov. is distinguished from the single male S. brevidilata by its narrow head width (<9.5 mm; 9.5 mm in S. brevidilata) and presence of lateral black stripes on the tergites, which are lacking in S. brevidilata. Semia pallida sp. nov. also lacks the white pollinosity displayed on the terminal tergites of S. watanabei.	en	Emery, David L., Lee, Young June, Pham, Hong-Thai (2017): Descriptions of four new species of Semia Matsumura (Hemiptera: Cicadidae: Psithyristriini) from Vietnam, with a key to the species of Semia. Zootaxa 4216 (2): 153-166, DOI: 10.5281/zenodo.230748
03FA1806FF9BB84DFF14FC25FD30280D.taxon	distribution	Distribution, habitat, and seasonality. This species has a wide distribution along the east coast of Vietnam from Bidoup Nui Ba National Park in the south to Pu Mat National Park in northern Vietnam (Fig. 4). Specimens have been collected between March and May.	en	Emery, David L., Lee, Young June, Pham, Hong-Thai (2017): Descriptions of four new species of Semia Matsumura (Hemiptera: Cicadidae: Psithyristriini) from Vietnam, with a key to the species of Semia. Zootaxa 4216 (2): 153-166, DOI: 10.5281/zenodo.230748
03FA1806FF99B84BFF14FB1DFDFF2860.taxon	materials_examined	Type material. Holotype: ♂, Thua Thien Hue Prov., Bach Ma National Park, 1400 m, 16 ° 11 ’ 51 ” N, 107 ° 51 ’ 36 ” E, 20 III 2016 (VNMN; E- 00130); Paratypes: 1 ♂, 1 ♀, same location, 350 m, 30 III 2014; 1 ♂, Da Nang City, Ba Na Nature Reserves, 1450 m, 16 ° 01 ' 31 '' N, 107 ° 01 ’ 13 ” E, 15 VII 2015 (AM); 1 ♂, same location as holotype, 14 IV 2016; 2 ♂, 1 ♀, same location as holotype, 30 IV 2016 (DE). Other material. 1 ♂, Da Nang City, Ba Na Nature Reserves, 1450 m, 16 ° 01 ' 31 '' N, 107 ° 01 ’ 13 ” E, 15 VII 2015 (YJL).	en	Emery, David L., Lee, Young June, Pham, Hong-Thai (2017): Descriptions of four new species of Semia Matsumura (Hemiptera: Cicadidae: Psithyristriini) from Vietnam, with a key to the species of Semia. Zootaxa 4216 (2): 153-166, DOI: 10.5281/zenodo.230748
03FA1806FF99B84BFF14FB1DFDFF2860.taxon	description	Description of male (Figs 2 D, 3 G – H, 7 A – B). Head mostly brown, with black patch along midline and along posterior margin, black patch around ocelli, and brown triangular area on midline posterior to postclypeus; ocelli pink; postclypeus brown, with black “ V ” dorsally, black horizontal striations along transverse grooves midanteriorly, pale brown patch either side of midline over central third, and prominently shiny black over posterior third; anteclypeus mainly brown, black over central third; gena and lorum black posteriorly, becoming brown anteriorly; rostrum brown, black at tip, extending to mid-sternite II; compound eyes dark brown; antennae light brown; supra-antennal plates brown. Thorax: Pronotum mostly pale brown-ochraceous, with black markings outlining brown stripe along midline, black patch along parapsidal sutures, and black strip along lateral border; pronotal collar evenly brown, with median black triangular mark on posterior margin, expanded laterally, rounded laterally. Mesonotum light olivebrown, with black median stripe, extending laterally and posteriorly submedian sigella, broadening along parasidal sutures; scutal depressions black; cruciform elevation ochraceous, with lateral depressions light brown with black lateral spot. Metanotum light brown. Legs predominantly light brown; coxa brown with anterior black stripes; trochanters brown; femora with small black markings at ends, with primary spine erect, brown; tibiae similarly patterned to femora, black around tarsi; tarsi brown anteriorly, black over distal half; claws black. Meracanthus elongated, narrow, pale brown, cream laterally, sharply pointed, overlapping anterior half of opercula. Wings hyaline, veins olive-cream to black, olive-green at node; fore wing with infuscations along crossveins r, m, r-m, and m-cu, vein CuA 2, bases and apices of veins RA 2, RP, M, M 1 - 4, and CuA 1, nodal line intersection, and outer margins of apical cells 1 – 7; basal membrane grey; basal cell translucent; hind wing with 6 apical cells; with continuous infuscations along proximal veins of apical cells 1 – 3; plaga grey, covering jejum, with translucent area near distal margin. Opercula pale yellowish brown, spatulate, not extending beyond posterior margin of sternite II, rounded medially, clearly not meeting on midline. Timbals (Fig. 2 D) with 5 long ribs; ribs 1 – 4 dark brown, full length fused ventrally, thinner through dorsal half to prominent central expansion, thicker ventrally, dark brown, interspersed by three intercalary ribs; rib 5 thick, discontinuous centrally. Timbal plate prominent; timbal dome pale brown, extending over half width of timbal, inverted distally. Apodeme pit small, slit like, conspicuous. Abdomen with tergites mainly brown, darker along midline, lighter laterally, with black longitudinal stripe near lateral margins; tergite 1 brown; timbal covers pale brown, rounded minimally covering timbals (Fig. 2 D); tergites 2 – 7 brown; tergite 8 dark brown anteriorly with a black spot either side of midline and pale brown patch posteriorly; sternites I pale brown, with posterior margin dark black; stenites II-VI pale brown, translucent, with posterior margins darker brown; sternite VII dark brown; sternite VIII brown. Genitalia (Fig. 3 G – H): Pygofer trapezoid in ventral view; dorsal beak short, rounded, protruding upwards in lateral view, not extending to elongated anal styles; distal shoulder acute, directed and curved laterally; uncal lobe dark brown posteriorly, becoming pale brown towards apex, short, with inner margins widely separated from base to apex and lateral margins rounded at apex, curved in lateral view; basal lobe stout, strongly angled anteriorly in ventral view. Aedeagus short, entirely within uncus. Description of female (Fig. 7 C – D). Head and thorax similar to male, with generally darker and greenish coloration; pronotal collar ochraceous, pale, rounded laterally; mesonotum distinctly olive green with similar black patterns to male. Wings similar to male, with light infuscations along posterior margins of hindwing apical cells 1 – 3. Abdomen dark brown; tergite 1 brown; tergites 2 – 3 with black anterior margins, brown posteriorly; tergites 3 – 8 black-brown medially, browner laterally with black stripe; sternites I – VII dark brown to black; abdominal segment 9 dark brown, with black diagonal stripe on lateral aspect and distinct brown pubescence. Ovipositor dark brown, black at tip, not extending beyond abdomen. Measurements (7 males, 2 females). Body length: male 28.0 – 31.0 (29.2); female 23.2 – 23.8 (23.5). Length of head + thorax: male 11.7 – 12.9 (12.3); female 12.2 – 12.5 (12.4). Length of abdomen: male 15.5 – 18.5 (16.8); female 10.9 – 11.3 (11.1). Fore wing length: male 33.3 – 35.8 (34.5); female 34.0 – 34.6 (34.3). Head width: male 7.9 – 8.3 (8.1); female 8.1 – 8.3 (8.2). Pronotum width: male 8.2 – 9.0 (8.6); female 8.4 – 8.5 (8.5). Abdomen width: male 9.0 – 9.8 (9.3); female 8.8 – 8.8 (8.8).	en	Emery, David L., Lee, Young June, Pham, Hong-Thai (2017): Descriptions of four new species of Semia Matsumura (Hemiptera: Cicadidae: Psithyristriini) from Vietnam, with a key to the species of Semia. Zootaxa 4216 (2): 153-166, DOI: 10.5281/zenodo.230748
03FA1806FF99B84BFF14FB1DFDFF2860.taxon	etymology	Etymology. The name “ albusequi ” is the Latin translation of the Vietnamese “ Bach Ma ” (“ white horse ”), treated here as a masculine noun, reflecting the location of this species on Bach Ma Mountain. Distinguishing features. Males of S. albusequi sp. nov. lack the continuous infuscation along the posterior margin of the hind wing apical cells 1 – 6, so are readily distinguished from S. klapperichi, S. majuscula, S. magna sp. nov., and S. tibetensis. Semia albusequi sp. nov. (body length <31 mm) is smaller than S. hainanensis (body length> 37 mm), S. gialaiensis (body length> 32 mm), and the single male of S. brevidilata (body length 34 mm). Semia albusequi sp. nov. lacks the distinct white pollinosity present on S. pallida sp. nov., and on the tergite 8 of S. watanabei. The bevelled ventral apices on the uncal lobes of S. spiritus sp. nov., the lateral “ spine-like ” projection from the uncus of S. spinosa, and the ornate lateral projections of the uncal apices in S. lachna contrast with the short rounded apices of the uncal lobes on S. albusequi sp. nov.	en	Emery, David L., Lee, Young June, Pham, Hong-Thai (2017): Descriptions of four new species of Semia Matsumura (Hemiptera: Cicadidae: Psithyristriini) from Vietnam, with a key to the species of Semia. Zootaxa 4216 (2): 153-166, DOI: 10.5281/zenodo.230748
03FA1806FF99B84BFF14FB1DFDFF2860.taxon	distribution	Distribution, habitat, and seasonality. This species is currently restricted to Central Vietnam at Bach Ma National Park, Thua Thien Hue Province and Ba Na Nature Reserves in Da Nang City (Fig. 4). Specimens have been collected between March and July.	en	Emery, David L., Lee, Young June, Pham, Hong-Thai (2017): Descriptions of four new species of Semia Matsumura (Hemiptera: Cicadidae: Psithyristriini) from Vietnam, with a key to the species of Semia. Zootaxa 4216 (2): 153-166, DOI: 10.5281/zenodo.230748
