Anacranae vietnamensis Storozhenko, 2002

Dawwrueng, Pattarawich, Storozhenko, Sergey Yu. & Suwannapoom, Chatmongkon, 2025, Review of the genus Anacranae Miller, 1934 (Orthoptera: Acrididae: Catantopinae), Zootaxa 5632 (2), pp. 364-376 : 369-371

Anacranae vietnamensis Storozhenko, 2002

( Figs. 4A–Q , 6E–F )

Anacranae vietnamensis Storozhenko, 2002: 604 , figs. 26–29 (holotype —female, Vietnam: Gia Lai Province, 20 km N Kannak, Buon Luoi; in ZISP); Kim & Pham, 2014: 55.

Type material examined. Vietnam: Gia Lai Province, 20 km N Kannak, Buon Luoi , 1–10.IV 1995, female (holotype), leg A. V . Gorochov ( ZISP) .

Other material examined. Thailand: Chantaburi Province, Pong Namron District , Near Klong Tani, 300– 350 m, 21. VI 2020, 3 males, 2 females, coll. P. Dawwrueng ( RIM) ; Thailand: Ratchaburi Province, Suan Phueng District , Khao Krajom, 850–900 m, 22. V 2022, 2 males, 2 females, coll. P. Dawwrueng ( RIM) .

Description of male (hitherto unknown). Body slender, small to medium-sized for the genus. Head as long as the pronotum ( Figs. 4A–B ). Frons and genae coarsely punctured ( Fig. 4E ); vertex and occiput smooth. Face in profile reclinate ( Fig. 4A ). Frontal ridge distinct to median ocellus, deeply sulcated between the antennae, slightly narrowed near median ocellus ( Fig. 4E ). Vertex between eyes narrower than maximal width of frontal ridge. Fastigium of vertex rather long; foveolae present ( Fig. 4B ). Eyes almost spherical. Antennae 22-segmented, beyond the base of hind femora. Pronotum punctured, crossed by three transverse furrows and one short transverse furrow between the first and the third furrows, pronotum strongly constricted at the fourth furrows ( Figs. 4A–B ); median and lateral carinae absent; prozona 2.5–3.0 times as long as metazona; anterior margin of pronotum almost straight; posterior margin of pronotum nearly truncated with shallow excise on the middle ( Fig. 4B ). Prosternal spine slightly flattened basally narrowing into a conical and pointed apex. Mesosternal lobes with internal margin concave, mesosternal interspace as broad as mesosternal lobe; metasternal lobes fused ( Fig. 4F ). Tegmina lateral, not touching each other in dorsal view, slightly beyond the apex of 2 nd abdominal tergite, 2.5–2.8 times as long as wide; apex of tegmen rounded ( Figs. 4A–B ). Hind wings narrower than tegmina, covered under tegmina completely. Hind femora slender, 4.8–5.1 times as long as their maximal width; dorsal margin smooth; ventral genicular lobes without spine ( Fig. 4A ). Hind tibiae with 6 outer and 7 (8) inner dorsal spines; outer apical dorsal spine absent. Hind tarsi distinctly long, as long as the half of hind tibiae; third segment (without claws) slightly longer basitarsus; arolium large, surpassing apex of claws. Tympanum rather large, oval, covered by tegmina. 7 th and 8 th abdominal sternites with two subparallel rows of hairs. 10 th abdominal tergite with triangular furculae on posterior margin; supra-anal plate trapezoid with shallow median groove and a pair of small conical tubercles, longer than its width near base, with obtuse triangular apex ( Fig. 4G ); its surface slightly concave near the base. Paraprocts with small and rather thin process on its lateral side, pointed laterad in dorsal view ( Fig. 4G ) and pointed upward in lateral view ( Fig. 4H ). Cerci slightly beyond the supra-anal plate, conical, with obtuse pointed apex, 2.7–3.0 times as long as their width near base ( Figs. 4G–H ). Subgenital plate long.

Epiphallus bridge-shaped; bridge narrowed and not divided; ancorae large, triangular; anterior projections slightly shorter than ancorae ( Fig. 4L ); posterior projections elongated into a narrow process ( Fig. 4L ); lophi of epiphallus rather small, triangular ( Figs. 4L–M ); oval sclerites very large. Cingulum sclerotized, consisting of almost straight and slightly concave near the apex of apodemes ( Fig. 4J ); rami narrow ( Figs. 4I–K ); zygoma straight, covering the arch of cingulum ( Fig. 4J ). Valves of cingulum long, divided, parallel-side, apically widened and lobed shape, apex obtuse rounded ( Figs. 4J–K ). Apical valves of penis long with rounded apex, almost as long as cingular valves ( Fig. 4I ); basal and apical penis valves connected by flexure.

Body and abdomen yellowish green when alive ( Fig. 6E ), but fade to yellowish brown after preservation ( Figs. 4A–B ). Dorsal side of head black with oblique white banded beside along the eyes; frons yellowish green ( Fig. 4E ), genae yellowish green with white oblique horizontal stripe ( Fig. 4A ); postocular narrowed stripe black continued to the edge of its head; mandibles yellow with brown apex ( Fig. 4E ). Basal third of antennae bluish grey, rest part black except two last segments bluish white ( Fig. 6E ). Disc of pronotum yellowish green; lateral lobes dark green with two white spots ( Figs. 4A–B ). Tegmina black with light stripe along median line ( Fig. 4B ). Fore and mid femora yellowish green; fore and mid tibia green; fore and mid tarsi bluish green. Hind femur yellowish green with two large green spots, the first one near the basal part darker than the second near apical part, these spots present on both outer and inner side ( Figs. 4A–B ); dorsal genicular lobe black but ventral lobe white. Hind tibia blue with black and pale base; dorsal spines with black apex. Hind tarsi blue ( Figs. 4A–B ). Supra-anal plate green; cerci light brown basal half and bluish green apical half; subgenital plate yellowish green ( Figs. 4A–B ).

Measurements (length in mm). Body: males 15.9–19.2, females 20.2–23.3; antenna: males 14.3–18.3, females 9.3–13.7; pronotum: males 2.8–3.3, females 3.3–4.5; tegmen: males 2.2–2.8, females 2.3–3.4; hind femur: males 10.0–11.3, females 12.0–12.9.

Remarks. The females from Thailand are conspecific with holotype of A. vietnamensis from Vietnam. In Chantaburi and Ratchaburi, both males and females were found which allows us to describe hitherto unknown males. Moreover, we also showed the live coloration of this species for the first time.

Distribution. South Vietnam (Gia Lai Province) and Thailand (new record, Chantaburi and Ratchaburi Provinces).

Figures

FIGURE 4. Anacranae vietnamensis Storozhenko, 2002. A. General habitus of male, lateral view; B. The same, dorsal view; C. General habitus of female, lateral view; D. The same, dorsal view; E. Head of male, frontal view; F. Mesosternum and metasternum of male, ventral view; G. Apex of male abdomen, dorsal view; H. The same, lateral view; I. Male genital complex, lateral view; J. The same, dorsal view; K. The same, anterior view; L. Epiphallus, dorsal view; M. The same, anterior view; N. Mesosternum and metasternum of female, ventral view; O. Apex of female abdomen, dorsal view; P. The same, lateral view; Q. The same, ventral view. Scale bars of figures A–E are 5 mm and figures F–H, N–Q are 1 mm.

FIGURE 6. Anacranae spp., live coloration before preservation. A. Male of A. beybienkoi from Ratchaburi Province, lateral view; B. Female of A. beybienkoi from Ratchaburi Province, lateral view; C. Male of A. beybienkoi from Chiang Rai Province, lateral view; D. The same, dorsal view; E. Male of A. vietnamensis from Chantaburi Province, lateral view; F. Female of A. vietnamensis from Chantaburi Province, lateral view; G. Male of A. maculata sp. nov., lateral view; H. Female of A. maculata sp. nov., lateral view.