Piriana limai, Santos-Silva, 2023

Santos-Silva, Antonio, 2023, Description of a new species of Piriana Santos-Silva, Galileo & McClarin, and notes and new records in Cerambycinae and Lamiinae from the Neotropical Region (Coleoptera, Cerambycidae), Faunitaxys 11 (12), pp. 1-12 : 2-6

Piriana limai sp. nov.

( Fig. 1- 11 )

ZooBank:http://zoobank.org/ 4A914B1B-A307-4020-B59E-723F5EE1F847

Holotype, ♂, BRAZIL, Acre: Senador Guiomard , no date and collector indicated ( INPA).

Paratypes

BRAZIL, Acre: 1 ♀, same data as holotype ( MZSP 52512 ); Bujari, FES Antimary, 9º20’01”S 68º19’17”W , 1 ♀, 21.X-4.XI.2016, E.F. Morato & J.A. Rafael leg. ( MZSP 52513 ) .

Description of the holotype ( Fig.1 - 4 , 7, 9 )

Coloration. – Headcapsuleorangish,exceptdark-brownantennaltubercles, areabetweeneyesand base of antennae, andtransverse, wide bandbehind lower eye lobes, and brownish superior area on frons close eyes; anteclypeus pale orange close to postclypeus, yellowish-white close to labrum; labrum pale orange except yellowish-white apex; ventral mouthparts orangish, except palpomeres yellowish-brown with apex narrowly yellowish-white; scape, pedicel, and antennomere III dark brown;antennomere IV pale yellowon basal 2/3, dark brown on apical third; antennomere V reddish brown on basal 3/4, dark brown on apical quarter; antennomere VI reddish brown on basal 2/3, dark brown on apical third;antennomeres VII -IX dark brown(missing part of X and entire XI on right antenna, and part of VIII and entire IX - XI on left antenna). Pronotum orangish brown, with wide dark-brown central band, gradually widened from anterior to posterior margin. Sides of prothorax orangish close to pronotum, dark brown on remaining surface. Prosternum dark brown laterally, orangish brown centrally; prosternal process orangish brown. Mesoventrite reddish brown laterally, orangish brown centrally;mesoventral process orangish brown. Mesanepisternum, mesepimeron, metanepisternum, and metaventrite dark brown, except dark orangish brown intercoxal process of metaventrite. Scutellum darkbrown.Elytra dark orangishbrownonanterior 3/5, exceptlarge dark brown macula from base to middle close to suture, with its outer margin rounded, andits apex brownish, andlarge, longitudinalbandclose to epipleural margin, macula dark brown on its anterior half, brownish on its posterior half, from near suture to about middle, with its superior margin rounded; posterior 2/5 dark brown, except yellowish apex. Pro- and mesocoxae mostly orangish brown; metacoxae mostly dark reddish brown; trochanters mostly yellowish-white; femora yellowish-white onbasal quarter, orangish brown on wide central area, and brown on remaining surface;protibiae brown, slightly darker basally; meso- and metatibiae dark brown basally, slightly reddish-brown before middle, brown on remaining surface; tarsomeres I -II brown; tarsomere III brownish basally,gradually orangish towardapex; tarsomere IV and about basal4/5 of V brownish, and apex of V orangish; tarsal claws orangish about basal half, brownish on remaining surface.Abdominal ventrites 1 -2 dark brown laterally, orangish-brown withirregulardarkbrownareas interspersed centrobasally;3 -4 dark brown laterally, reddish brown centrobasally, orangish-brown centroapically; 5 dark brown laterally,brown centrally.

Head. – Frons densely, finely punctate; with abundant yellowish-white pubescence not obscuring integument, except glabrous median groove. Area betweenantennal tubercles andupper eye lobes with transverse glabroussulcus, forming cross with median groove; with dense yellow pubescence; remaining surface of vertex and area behind upper eye lobes with dense yellow pubescence, except sparse brownish pubescence close toeye.Area behind lower eyelobeswith abundant yellowish-white pubescencenot obscuring integument close toeye, glabrous close to prothorax. Genae slightly longer than lower eye lobe; with abundant yellowish-white pubescence not obscuring integument, except glabrous apex;with a few long, erect yellowish-white setae interspersed. Wide central areaof postclypeus with sparse yellowish-white pubescence, one long, thick,erect dark brownsetaoneachside, and sparse, long, erectyellowishwhite setae interspersed laterally. Sides of postclypeus glabrous. Labrum with abundant yellowish-white pubescence not obscuring integument, with long, erect setae of same color interspersed, and transverse row of sparse, thick, erect darkbrownsetae aboutmiddle.Gulamentum glabrous, exceptsomewhat sparse yellowish-white pubescence anteriorly. Distance between upper eye lobes 0.33 times distance between outer margins of eyes; in frontal view, distance between lower eye lobes 0.62 times distance between outer margins of eyes.Antennae (from base of scape to apex of antennomere IX) 2.6 times elytral length, reaching elytral apex at base of antennomere VI. Scape with somewhat abundant brownish pubescence not obscuring integument; with abundant, long, erect dark-brown setae ventrally, some setae with yellowish apex. Pedicel with abundant brownish pubescence notobscuring integument,and a fewlong, erect dark brown setae ventrally. Antennomere III with abundant brownish pubescence not obscuring integument, with short, decumbent, both yellowish and whitish setae interspersed throughout, somewhat long, erect, thick dark-brown setae ventrally, and a fewsomewhat short, erect, thick dark brown setae dorsally. Antennomere IV with abundant whitish pubescence not obscuring 1 - 4. Holotype ♂. 1. Dorsal habitus. 2. Ventral habitus. 3. Head, frontal view. 4. Lateral habitus. 5 - 6. Paratype ♀. 5. Dorsal habitus. 6. Ventral habitus.

7 -8. Piriana limai sp. nov., profemora. 7. Holotype ♂. 8. Paratype ♀. 9-11. Piriana limai sp. nov. 9. Holotype ♂, prosternal and mesoventral processes. 10. Paratype ♀, prosternal and mesoventral processes. 11. Paratype ♀, dorsal habitus. 12- 16. Piriana tricuspis (Belon, 1903) . 12. ♂ fromBolvia( SantaCruz ),prosternalandmesoventralprocesses. 13 . ♀ from Bolivia (Santa Cruz), dorsal habitus. 14 . ♀ from Bolivia (Santa Cruz), dorsal habitus. 15 . ♂ from Bolivia (Santa Cruz), dorsal habitus. 16. Syntype , dorsal habitus, by Jesus Santiago Moure.

17. Ozineus elongatus Bates, 1863 , ♂. 18. Basiptera castaneipennis Thomson, 1864 , ♀. 19. Dodecosis saperdina Bates, 1867 , ♀. integument, and a few short, erect, thick dark brown setae interspersed dorsally and ventrally. Antennomeres V- X with abundant yellowish-white pubescence notobscuring integument,short, erectwhite setae interspersed throughout,anda few short, erect dark setae interspersed on V- VIII.

Antennal formula based on length of antennomere III:

– Scape = 1.56. – Pedicel = 0.16. – IV = 1.12. – V = 1.00. – VI = 0.96. – VII = 0.94. – VIII = 1.12. – IX = 1.26.

Thorax. – Prothorax wider than long; anterior constriction narrow, well marked; sides rounded close to anterior constriction, subparallel-sided on remaining anterior third, then gradually widened toward lateral tubercles, then distinctly narrowed from lateral tubercles toward posterolateral angles; anterior region of the lateral tubercles is an enlargement of the margin of the prothorax ending in a small sharp point directed upward, located on posterior fifth. Pronotum somewhat abruptly inclined close to anterior margin, especially laterally;posterior quarter transverselydepressed,abundantly, coarsely punctate; sides of area between middle and posterior quarter sparsely, coarsely punctate; remaining surface densely, minutely punctate; sides with abundant yellow pubescence almost obscuring integument, except slightly sparser pubescence close to sides of prothorax on anterior third, and abundant yellowish-white pubescence close to lateral tubercles of prothorax; dark-brown band with abundant dark-brown pubescence not obscuring integument. Sides of prothorax with anterior sulcus glabrous; superior half with dense yellow pubescence on anterior 2/3, yellowish-white on posterior third; inferior half with abundant yellowish-white pubescence partially obscuring integument; with a few long, erect dark brown setae after lateral tubercle. Prosternum with abundant yellowish-white pubescence not obscuring integument. Prosternal process ( Fig. 9 ) almost laminiform centrally;with abundant yellowish-white pubescence not obscuring integument on anterior half, slightly sparser on posterior half.Ventral surface of meso- and metathorax with abundant grayish-white pubescence partially obscuring integument, except yellowish-white pubescence on central area of mesoventrite and on mesoventral process, and yellowish pubescence on posterocentral region of metaventrite. Mesoventral process ( Fig. 9 ) sublaminiform, parallel-sided on posterior half. Scutellum with somewhat abundant brownish pubescence not obscuring integument.

Elytra. – Abundantly, coarsely punctate on anterior 2/3, punctures sparser, finer on posterior third; apex obliquely truncate, with outer angle spiniform and sutural angle rounded; with dense yellow pubescence on light anterior area, dense brown pubescence on dark areas, and abundant yellowish-white pubescence onapex; with somewhat abundantandlong, erect dark-brown setae interspersed throughout.

Legs. – Femora with abundant yellowish-white pubescence not obscuring integument. Protibiae with somewhat sparse yellowish pubescence dorsally and laterally, except apex of sides with somewhat abundant, bristly and thick yellowish-brown pubescence, and abundant yellowish-brown pubescence ventrally, pubescence gradually bristly and denser from basal quarter; posterior third of dorsal surface with short, erect, thick dark-brown setae interspersed. Mesotibiae withabundantyellowish-whitepubescence notobscuringintegument on basal half, bristly, then gradually denser and yellowish-brown toward apex, except anterior region of dorsal sulcus with dense yellowish-white pubescence. Metatibiae with somewhat sparse yellowish-white pubescence on basal third, gradually denser and bristly toward apex on posterior third; with short, erect both yellowish-brown and dark brown setae interspersed, erect setae distinctly more abundant onposteriorthird.Dorsal surfaceof tarsomereswith abundantyellowishwhite pubescence,except sparser pubescence on tarsomereV.

Abdomen. –Ventrites1 - 4 with abundant whitish pubescence not obscuring integument;ventrite 5 with somewhat sparse whitish pubescence on basal third, pubescence distinctly sparse on remaining surface, with short, subdecumbent dark brown setae interspersed on posterior third.

Female ( Fig.5-6 , 8, 10-11 ). – Similar to male, differing by antennae slightly shorter (both paratypes without antennomere XI), 2.3 times elytral length from base of scape to apex of antennomere IX, 2.6 times from base of scape to apex of antennomere X, reaching elytral apex slightly before middle of antennomere VI; lateral tubercles of prothorax more distinctly projected;prosternal process( Fig.10 ) slightly wider,not sublaminiform centrally; mesoventral processes ( Fig. 10 ) slightly wider on posterior half, not sublaminiform; and meso- and metafemoral club narrower ( Fig. 5 -6 ). Chromatic variation. – Fronsandvertexreddishbrown;antennomeres V- XI entirely dark brown; anterolateral dark area distinctly fused with posterior dark area close to epipleural margin; dorsal dark-brown areas fused along suture; anterodorsal dark-brown macula with wide longitudinal projection on its posterior half; tibiae entirely dark; abdominal ventrites dark brown, except orangish brown apex of 1 - 4.

Dimensions (mm) (holotype ♂ / paratypes ♀).

– Total length, 5.15/5.60 -6.10;

– Prothoracic length, 0.85/0.90 -0.95;

– Anterior prothoracic width, 0.90/1.00 -1.05;

– Posterior prothoracic width, 1.05/1.15 - 1.20;

– Maximum prothoracic width, 1.20/1.40 - 1.50;

– Humeral width, 1.40/1.60 - 1.65;

– Elytral length, 3.80/4.10- 4.40.

Etymology. – The new species is dedicated to William Lima, an expert on Lampyridae ( Coleoptera ) for sending the specimens of the new species for study.

Remarks. – Piriana limai sp. nov. is similar to P.tricuspis (Belon, 1903) ,but differs as follows: dorsal surface of the head without oblique brown pubescent band from upper eye lobes to vertex; longitudinal blackish central band on the pronotum distinctly widened from anterior to posterior margin; longitudinal carina on dorsal surface of the elytra barely marked; elytral apex obliquely truncate and sutural angle rounded and not projected; mesoventral process in male sublaminiform ( Fig. 9 ). In P. tricuspis ( Fig. 12 - 16 ), the dorsal surface of the head has oblique brown pubescent band from upper eye lobes to vertex, longitudinal blackish central band on the pronotum subparallel-sided, longitudinal carina on dorsal surface of the elytra well marked, elytral apex not or slightly obliquely truncate with the sutural angle somewhat projected, and the mesoventral process is not sublaminiform ( Fig. 12 ). Piriana limai sp. nov. differs from P.birai Santos-Silva, Galileo & McClarin, 2018 and P. nearnsi Santos-Silva, Galileo & McClarin, 2018 , (see photographs in the original descriptions and Bezark 2023) by the elytral apex obliquely truncate and the sutural angle not projected (sinuous and with sutural angle projected in these species); and from P. svachai Santos-Silva, Galileo &McClarin,2018 (see photographs in the original description and Bezark 2023) by the sutural angle of the elytra not projected (projected in P.svachai ),and the mesoventral process in male sublaminiform (not sublaminiform in males of P.svachai ).

Figures

Figures 1-6. Piriana limai sp. nov.

Figures 7-16. Piriana spp.