Diaphanogryllacris normalis Gorochov & Woznessenskij, 1999

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 : 168

Diaphanogryllacris normalis Gorochov & Woznessenskij, 1999

Figs. 54 D–E, 55E, 55J, 57E, 59H–I

Material examined. Vietnam: VinhPhuc prov. , MeLinh B.S., (21°23'38''N, 105°42'56''E), 30.vi.–1.vii.2015, leg. J. Constant & J. Bresseel (I.G.: 33.092)— 1 female, 1 male (Brussels RBINS) .

Additional Description. Medium sized species. Head: Face oval; nearly smooth with very fine transverse riffles in middle; fastigium verticis wider than scapus; ocelli little distinct; fastigium frontis separated from fastigium verticis by a very fine suture; subocular furrows shallow, widening ventrad ( Fig. 55E ). Abdominal tergites two and three each with two rows of stridulatory pegs (5–6, 10; 10–15, 17; n = 1 male, 1 female; Fig. 55J ).

Wings reaching or little surpassing end of stretched hind tibia ( Fig. 54 D–E). Tegmen: Radius with two branches, both forked near tip; media anterior free, in subbasal area closely approached to radius; cubitus anterior at base with a single branch that forks into two veins, the anterior branch makes a curvature and 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 external and 4–5 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 with interrupted black transverse band; pronotum with large black figure in middle; legs of general color. Face yellowish brown with black spots below compound eyes and at baso-lateral angles of clypeus; tip of mandibles also black. Tegmen semi-transparent white, veins and veinlets brown, towards base yellow, veinlets black; 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, vertical hind margin excised in middle and margin above excision little projecting behind; on both sides of excision with basically compressed triangular process that turns into a long substraight spine. Tenth abdominal tergite in middle and between projections of ninth tergite with a pair of upright projections that are stout at base, spinose at tip and in situ terminating under apical projection of hind margin of ninth tergite ( Fig. 57E ). Epiproct long, furrowed, tip in situ curved proximad; paraproctes forming large plates at internal base of cercus. Subgenital plate with convex lateral margins, apical margin on both sides straight, in middle with bicornute median process; slightly curved styli inserted at lateral areas of apical margin. For phallus sclerite see Gorochov & Woznessenskij (2000).

Female. Seventh abdominal sternite largely membranous with setose subapical area. Subgenital plate triangular with obtuse tip, otherwise membranous; in female at hand tip reverted pointing proximad ( Fig. 59H ). Ovipositor elongate substraight with faintly approaching margins; tip with narrowed margins, subobtuse ( Fig. 59I ).

Measurements (1 male, 1 female).—body w/wings: male 46, female 46; body w/o wings: male 30, female 36; pronotum: male 6.5, female 6.8; tegmen: male 36, female 33; tegmen width: male 12.8, female 12.4; hind femur: male 17.5, female 18; ovipositor: female 30 mm.

Discussion. This species was originally described from Vietnam, TamDao. The male abdominal appendages are similar to the situation in D. annamita , but the medial lobe above the excision of the ninth tergite is narrower and the lateral projections after the basal bend shorter and pointing more posteriorly while the projections of the tenth tergite are less swollen at base. The female seventh abdominal sternite is clearly outlined, provided with two grooves and a faint medial elevation, the subgenital plate is simply triangular with obtuse tip.

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 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.