Capnogryllacris (C.) proxima Gorochov, 2003

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 : 146

Capnogryllacris (C.) proxima Gorochov, 2003

Figs. 46H , 47H , 48M , 49 G–H, 51N–O

Material examined. Vietnam: Prov. Vinhfu, Tam Dao N.P., (21°31'N, 105°33'E), 25–30.vii.2011, leg. J. Constant & J. Bresseel (I.G. 31.933)— 1 female, 1 male (Brussels RBINS) .

Additional Description. Large species. Head: Face ovoid; forehead in middle with fine riffles, laterally nearly smooth; fastigium verticis little wider than scapus; ocelli little distinct; fastigium frontis separated from fastigium verticis by a very fine suture; subocular furrows shallow ( Fig. 48M ).

Wings surpassing middle of stretched hind tibiae ( Fig. 46H ). Tegmen: Radius with two branches, both forked near tip; media anterior arises free from base. In the male at hand, 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; in the female at hand, MA and MP arise with a common base for about one third of tegmen length, afterwards they divide into MA and MP without further branching, in this female the cubitus anterior is single branched and undivided but cubitus posterior divides at end of basal third into two branches; both specimens with four anal veins.

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 9–10 external and 10–12 internal spines on ventral margins (female); 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 black mark at antennal scrobae; pronotum with narrow black margins widened at fore and hind margins, in female only with a pair of triangular black spots from fore margin; legs of general color, genicular areas black; ventral spines on fore and mid tibiae black; hind tibia with black dorsal spines and black flecks around their bases. Face uniformly yellowish brown; antennal scrobae and area around ventral margin of compound eyes, mandibles and ventral part of labrum black. Tegmen semi-transparent yellowish, towards base darker; veins yellow or brown; hind wing semi-transparent white or light grey, main veins brown to nearly black; cross veins dark brown to black.

Male. Eighth abdominal tergite prolonged, blackish brown. Ninth abdominal tergite light yellow but black along basal and lateral margins, deeply furrowed in midline, on both sides with a large globular swelling that has on dark brown ventro-internal angle a black, compressed, elongate-triangular process ( Figs. 49 G–H). Subgenital plate wider than long, lateral margins strongly convex, apical margin bi-lobate; styli inserted at apico-lateral angles.

Female. Subgenital plate with convexly converging lateral margins and slightly bilobate apex; at base with a large and wide oval groove ( Fig. 51N ). Ovipositor substraight, very faintly curved ( Fig. 51O ).

Measurements (1 male, 1 female).—body w/wings: male 60, female 52; body w/o wings: male 40, female 38; pronotum: male 9, female 7.5; tegmen: male 47, female 37; tegmen width: male 19, female 15.7; hind femur: male 24, female 21; antenna: male 125; ovipositor: female 22 mm.

Discussion. There are two or three species of Capnogryllacris from Tam Dao in RBINS, four males and one female, but none of these belongs to C. humberti that Gorochov (2003) recorded from that area. Judging from the appendages of the male ninth abdominal tergite, three of the males belong to C. nigromaculata sp. nov. (see below). The fourth male resembles C. humberti in color pattern of head and pronotum, but has the armature of the ninth tergite as figured by Gorochov (2003) for C. proxima and is also larger than the values given for C. proxima and the female at hand. This female agrees in color pattern of head and pronotum with the images given by Gorochov (2003) for C. proxima while the subgenital plate is similar to his image of C. humberti . Unfortunately, the author does not provide an image of the female subgenital plate for C. proxima nor for the male ninth abdominal tergite of what he identified as C. humberti . Thus there remains some doubt, if the two specimens that I unite here under C. proxima really belong to the same species.

The black coloration of head and pronotum is less extended than in the original description by Gorochov (2003); in the male at hand the pair of triangular black spots at the anterior margin of the pronotum is completely missing. However, the appendages of the male ninth abdominal tergite agree well with the illustration in Gorochov (2003).

Figures

FIGURE 46. Genus Capnogryllacris, Habitus dorsal view: A, C. varifrons sp. nov. male paratype; B, C. e. fuscifrons ssp. nov. holotype; C–D, C. humberti (Griffini, 1914) female (C) and male (D); E, C. nigromaculata sp. nov. male holotype; F, C. e. erythrocephala Gorochov, 2003 male; G, C. e. borealis Gorochov, 2003 female; H, C. proxima Gorochov, 2003 male; I, C. varifrons sp. nov. female paratype.—Scales 10 mm.

FIGURE 47. Genus Capnogryllacris, Habitus dorsal view: A–B, C. p. phaeocephala Gorochov, 2003 male (A) and female (B); C, C. basaliatrata (Griffini, 1909) male Brunner's type of G. atrata in NHMW; D–E, C. khmerica Gorochov, 2003 male (D) and female (E); F, C. elongata (Fritze, 1908) male; G, C. e. erythrocephala Gorochov, 2003 female; H, C. proxima Gorochov, 2003 female; I, C. (D.) f. fasciculata (Pictet & Sauss., 1891) male; J, C. s. sakaerat Dawwrueng et al., 2015 female; K–L, C. s. toxica ssp. nov. male holotype (K) and female paratype (L). Scales 10 mm.

FIGURE 48. Genus Capnogryllacris: A–C, C. varifrons sp. nov.; D, C. e. fuscifrons ssp. nov.; E, C. humberti (Griffini, 1914); F, C. nigromaculata sp. nov.; G, C. p. phaeocephala Gorochov, 2003; H, C. e. erythrocephala Gorochov, 2003; I, C. e. borealis Gorochov, 2003; J, C. s. sakaerat Dawwrueng et al., 2015; K, C. elongata (Fritze, 1908); L, C. f. fasciculata (Pictet & Sauss., 1891); M, C. proxima Gorochov, 2003; N, C. s. toxica ssp. nov.; O, C. khmerica Gor.—Face female (A, E, G, I, J, N, O) and male (B–D, F, H, K–M); not to scale.

FIGURE 49. Genus Capnogryllacris: A–B, C. varifrons sp. nov.; C, C. e. fuscifrons ssp. nov.; D, C. e. erythrocephala Gorochov, 2003; E–F, C. humberti (Griffini, 1914); G–H, C. proxima Gorochov, 2003; I–K, C. nigromaculata sp. nov.—Male abdominal apex in apical or ventro-apical view to show projections of ninth abdominal tergite (in A, D, E, G, and K also subgenital plate).

FIGURE 51. Genus Capnogryllacris: A–B, C. varifrons sp. nov.; C–D, C. humberti (Griffini, 1914); E–F, C. s. toxica ssp. nov.; G–I, C. s. sakaerat Dawwrueng et al., 2015; J–K, C. p. phaeocephala Gorochov, 2003; L–M, C. khmerica Gorochov, 2003; N–O, C. proxima Gorochov, 2003; P–Q, C. e. erythrocephala Gorochov, 2003; R–S, C. e. borealis Gorochov, 2003.— Female end of abdomen with seventh sternite and subgenital plate in ventral view (A, C, E, G, J, L, N, P, R), habitus lateral view (H), ovipositor (B, D, F, I, K, M, O, Q, S). Scales 10 mm.