Capnogryllacris (C.) erythrocephala borealis 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 : 142

Capnogryllacris (C.) erythrocephala borealis Gorochov, 2003

Figs. 46G , 48I , 51 R–S

Material examined. Vietnam: Hoa Binh Prov., Ngo Luong Nat. Res., (20°26'16''N, 105°20'15''E), 25–30.vii.2016, leg. J. Constant & J. Bresseel (I.G.: 33.282 GTI project)— 1 female (Brussels RBINS) ; Hoa Binh Prov., Cuc Phuong National Park , (20°19'N, 105°36'30''E), 19–23.vii.2011, leg. J. Constant & J. Bresseel (I.G. 31.933)—1 nymph male (Brussels RBINS) ; 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 nymph male (Brussels RBINS) .

Discussion. C. erythrocephala borealis is close to C. martha ( Griffini, 1914a) . Gorochov et al. (2015) selected a lectotype (male) for the latter species since Griffini's original type is lost. They supposed that Griffini's type (type locality Annam) must have been from Laos rather than Vietnam. The neotype is from Banday, Laos, and the authors do not expect that species to occur in Vietnam. The specimen from North Vietnam at hand is similar to the neotype of C. martha , it has some distinct differences of color pattern of head and pronotum, the black pattern being more extended in C. martha than in C. borealis , and shape of tegmen (length to greatest width index 2.3 in C. martha , 3.0 in C. borealis ) that makes it unlikely that both specimens belong to the same species. From C. erythrocephala Gorochov, 2003 described from South Vietnam C. borealis differs apart from distinctly larger size by the shape of the female subgenital plate that has the central area elevated especially in posterior area and the lateral areas in basal half depressed and flattened instead of with transverse furrow (or elevation) in C. erythrocephala , the apical margin is straight to little convex instead of faintly notched in middle, and the groove at very base is very small instead of large.

Additional Description. Large species. Head: Face ovoid; forehead in middle with fine transverse riffles and scattered impressed dots, laterally nearly smooth; fastigium verticis little wider than scapus; ocelli distinct; fastigium frontis separated from fastigium verticis by a fine suture; subocular furrows indistinct ( Fig. 48I ). Abdominal tergites two and three without stridulatory pegs.

Wings surpassing hind knees ( Fig. 46G ). Tegmen: Radius and RS both forked near tip; RS on left tegmen only with a second unforked branch; media anterior arises free from base; 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; as individual variation the anterior branch remains undivided as MP+CuA1; cubitus posterior undivided, free throughout; with 4 anal veins, the last two with common base.

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.

Coloration. General color light brown; pronotum with a broad, curved, black band that not completely reaches the anterior margin and that includes four light dots; rhombic area in front of that band brown, posterior area yellowish brown, rim blackish. Face light brown; genae, mandibles and ventral area of labrum black. Tegmen semi-transparent yellowish, towards base darker; veins yellow or brown, in middle and especially towards base cross-veins bordered by very narrow black bands on both sides; hind wing semi-transparent light brown, towards margin ochre; main veins yellow to brown; cross veins brown near margin, but mostly black and bordered on both sides by brown bands.

Male unknown.

Female. Seventh abdominal sternite of normal size but in contrast to preceding sternites not setose but surface granular with only few scattered setae. Subgenital plate in middle of anterior margin with a small pit; at base broad with lateral marginal areas angularly upcurved, afterwards with convexly converging margins, apex rounded; surface rugose ( Fig. 51R ). Ovipositor elongate, very slightly curved with little converging margins; before tip margins more strongly narrowing, tip subobtuse ( Fig. 51S ).

Measurements (1 female).—body w/wings: 60; body w/o wings: 38; pronotum: 9.5; tegmen: 45; tegmen width: 15; hind femur: 26.5; antenna: 150; ovipositor: 27.5 mm.

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 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 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.