Diaphanogryllacris panitvongi panitvongi Gorochov, Dawwrueng & Artchawakom, 2015b

Ingrisch, Sigfrid, 2018, New taxa and records of Gryllacrididae (Orthoptera, Stenopelmatoidea) from South East Asia and New Guinea with a key to the genera, Zootaxa 4510 (1), pp. 1-278 : 169-170

Diaphanogryllacris panitvongi panitvongi Gorochov, Dawwrueng & Artchawakom, 2015b

Figs. 54 F–I, 55G–H, 57C–D, 57F, 58J, 59L, 59O

Material examined. Cambodia: Kampong Speu Kirirom N.P., (11°18'37''N, 104°3'4''E), 9–12.v.2015, leg. J. Constant & V. Sougnez (I.G. 33.022)— 1 female (Brussels RBINS) ; Kampong Speu, Chambok , (11°21'25''N, 104°7'9''E), 4–8.v.2015, leg. J. Constant & V. Sougnez (I.G. 33.022)— 1 male (Brussels RBINS) ; Siem Reap, Angkor , 2005, leg. I. Var— 3 females, 5 males (Brussels RBINS) ; Angkor Preah [Preak] Khan temple, 2006, leg. Oul Yothin— 1 male (Brussels RBINS) .— Thailand: Loei, Na Haeo, (17°27'N, 101°3'36''E), 16.v.2003, leg. J. Constant & K. Smets ( Field Research Station )— 1 female (Brussels RBINS) ; Phetchabun, Nam Nao (16°47'N, 101°27'E), 1000 m, 24–25.v.1988, leg. S. Ingrisch 1 female (Bonn ZFMK) .— Vietnam: Con Dao NP, Con Son Island, (8°41'30''N, 106°38'0''E), 17–24.vi.2012, leg. J. Constant & J. Bresseel (I.G.: 32.161)— 2 females, 3 males (Brussels RBINS) .

Diagnosis. Males of C. panitvongi can be recognized by the ninth abdominal tergite having a large groove on posterior surface with bulging margins but without distinct dorsal lobe, the lateral projections are nearly rectangularly bent from the broad base to the rather short acute spine while the pair of projections of the tenth tergite are long and thin with the base rather faintly swollen. The females have the basal area of the seventh abdominal sternite distinctly sclerotised, strongly setose in middle and concavely opening behind to a pair of large oval grooves at the beginning of the membranous zone; the subgenital plate is tongue-shaped. Beside of the color morph with a hieroglyphic figure on pronotum as described in Gorochov et al. (2015), there is also a morph with a large black spot on pronotum including four light dots.

Additional Description. Medium sized species. Head: Face oval; nearly smooth; fastigium verticis wider than scapus; ocelli little distinct; fastigium frontis separated from fastigium verticis by a very fine suture; subocular furrows shallow ( Figs. 55 G–H). Abdominal tergites two and three each with two rows of stridulatory pegs (1–7, 8– 13; 13–18, 9–22; n = 3 males, 2 females).

Wings reaching or little surpassing end of stretched hind tibia ( Figs. 54 F–I). Tegmen: Radius with two branches, both forked near tip; media anterior free, in subbasal area closely approached to radius, usually unbranched but in some specimens dividing into 2 branches; cubitus anterior at base with a single branch that forks into two veins, the anterior branch makes a curvature and often receives an oblique connection vein from MA and shortly after divides again into two parallel branches, MP and CuA1, while the posterior branch (CuA2) does not divide further; cubitus posterior undivided, free throughout; with 4 anal veins, last two with common stem.

Legs: Fore coxa with a spine at fore margin; fore and mid femora unarmed; fore and mid tibiae with four pairs of large ventral spines and one pair of smaller ventral spurs; hind femur with 6–7 external and 5–7 internal spines on ventral margins; hind tibia with spaced spines on both dorsal margins, ventral margins with one pre-apical spine; with 3 apical spurs on both sides.

Coloration. General color light brown; vertex uniformly light brown or with a black band from behind compound eye along anterior area of fastigium verticis to other side, in another color variant vertex black, on fastigium verticis alternating with 3 brown bands; pronotum with a black figure on disc consisting of anterior and posterior transverse bands connected by 3 distinct or indistinct longitudinal bands, in some specimens this figure is almost completely black with the light bands within this spot reduced to two pairs of small or minute light spots; legs of general color. Face yellowish brown with black spot below compound eyes and at baso-lateral angles of clypeus; tips of mandibles black; fastigium verticis with two faint or distinct dark spots. Tegmen semi-transparent white, veins and veinlets brown; towards base little darker; hind wing semi-transparent white, veins and veinlets brown.

Male. Eighth abdominal tergite only little prolonged. Ninth abdominal tergite globular with apical area bent down and with concave surface; ventro-apical margin little concavely excised in middle, on both sides of excision with a strong process with about triangular dorso-ventrally compressed base and down-curved, narrow, longconical apical area with acute tip. Tenth abdominal tergite in middle and between projections of ninth tergite with a pair of narrow, upright, acute projections curved faintly proximad, base of projections distant, oval, compressed. Epiproct long, oval, furrowed; paraproctes forming large plate at internal base of cercus ( Figs. 57 C–D, F). Subgenital plate with convex lateral margins, apical margin on both sides oblique, in middle with bicornute median process; slightly curved styli inserted at oblique areas of apical margin. Phallus with a narrow elongate but little sinuate sclerite with forked and recurved base, in situ embedded into a membranous sac ( Fig. 58J ).

Female. Seventh abdominal sternite largely membranous with transverse riffles, sclerotised area restricted to a lateral convex swelling on both sides of a wide median furrow, posterior side of those swellings and area in between covered by long hairs. Subgenital plate separated by a long membranous area with transverse folds from preceding sternite; plate semi-oval, vaulted and with compressed lateral areas, apical margin rounded ( Fig. 59L ). Ovipositor elongate substraight with faintly approaching margins, tip with narrowed margins, subobtuse ( Fig. 59O ).

Measurements (6 males, 6 females).—body w/wings: male 39–47, female 39–47; body w/o wings: male 26– 33, female 30–45; pronotum: male 5.2–6.5, female 5.5–6.5; tegmen: male 31–39, female 30–38; tegmen width: male 11.0, female 10.5–11.4; hind femur: male 14.0–16.5, female 15–18; antenna: male 80–125, female 120–130; ovipositor: female 25–30 mm.

Discussion. D. panitvongi was previously known only from the type locality, Sakaerat, Nakhon Ratchasima Province of Thailand and with the subspecies D. p. boulapha Gorochov & Dawwrueng, 2015 from Boulapha district in Laos. The present findings show that its range obviously covers a rather large area from Northeastern Thailand (Phetchabun and Loei provinces) to South Cambodia and even to Con Son Island in South Vietnam.

Figures

FIGURE 54. Genus Diaphanogryllacris, habitus dorsal view: A, D. annamita (Griffini, 1909) male; B, D. simulator Gorochov & Wozn., 1999 male; C, D. translucens (Serville, 1838) male; D–E, D. normalis Gorochov & Wozn., 1999 male (D) and female (E); F–I, D. panitvongi Gorochov et al., 2015 from Con Son Island female (F) and male (G), female from Nam Nao (H), male from Angkor Preah Khan (I). Scales 10 mm.

FIGURE 55. Genus Diaphanogryllacris: A, D. annamita tenera ssp. nov.; B, D. opulenta sp. nov.; C, D. sinuata sp. nov.; D, D. annamita (Griffini, 1909); E, D. normalis Gorochov & Wozn., 1999; F, D. recta sp. nov.; G–H, D. panitvongi Gorochov et al., 2015 from Con Son Island (G) and from Nam Nao (H); I, D. recta? from Cham Chu; J, D. normalis Gorochov & Wozn., 1999 mirror image; K, D. opulenta sp. nov.—Face (A–I), stridulatory pegs on second and third abdominal tergites, front is left (J–K).

FIGURE 57. Genus Diaphanogryllacris: A–B, D. annamita (Griffini, 1909); C–D, D. panitvongi Gorochov et al., 2015 from Siem Reap; E, D. normalis Gorochov & Wozn., 1999; F, D. panitvongi Gorochov et al., 2015 from Con Son Island; G, D. t. translucens (Serville, 1839); H, D. simulator Gorochov & Wozn., 1999; I, D. laeta (Walker, 1869) [holotype of G. chinensis Brunner, 1888 BrW14.463] male; J–K, D. aequalis (Walker, 1859) [K, lectotype of G. annulata Brunner, 1888 BrW16.117] male—A–I, Male abdominal apex in apical (A, D–G, I–K) and in lateral view (B–C, H).—Abbreviations: 9th ninth abdominal tergite, 10th tenth abdominal tergite, ce cercus, e epiproct, pa paraproct, ph phallus, sg subgenital plate, st stylus. The arrows point at the spines at apical margin of ninth and tenth tergite.

FIGURE 58. Genus Diaphanogryllacris: Male phallus sclerites with surrounding membranes, partly freed: A–B, D. annamita tenera ssp. nov.; C–E, D. sinuata sp. nov. paratype (C) and holotype (D–E); F–G, D. recta sp. nov.; H–I, D. annamita (Griffini, 1909); J, D. panitvongi Gorochov et al., 2015 from Siem Reap; K–N, D. opulenta sp. nov., in top view (A, C–D, F, H, J), lateral view (B, E, G, I, N), oblique lateral view (M), oblique proximal view (K–L).

FIGURE 59. Genus Diaphanogryllacris: A–B, D. annamita tenera ssp. nov.; C–D, D. sinuata sp. nov.; E, D. sp. specimen from Ban Om Khut; F–G, D. brevispina Du et al., 2016; H–I, D. normalis Gorochov & Wozn., 1999; J–K, D. recta sp. nov.; L, D. panitvongi Gorochov et al., 2015 from Na Haeo; M–N, D. recta? from Cham Chu; O, D. panitvongi Gorochov et al., 2015 from Con Son Island.—Ventral view of female abdominal apex with seventh sternite and subgenital plate (A, C, E, F, H, J, L, M, O), female habitus in lateral view (D, K) and ovipositor (B, G, I, N). Scales 10 mm.