Papuogryllacris diluta baiteta, Ingrisch, 2018

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 : 260-262

Papuogryllacris diluta baiteta ssp. nov .

Figs. 94 A–B, 96A–C

Material examined. Holotype female: Papua New Guinea: Madang, Baiteta , elev. 57 m (5°1'S, 145°45'0''E), 13.vii.1995, leg. Olivier Missa (FOG AR 29)—(Brussels RBINS).

Diagnosis. The new subspecies differs from all other subspecies of Papuogryllacris diluta Griffini, 1909f by the rather long female subgenital plate that is, although somewhat bent in about midline, only slightly narrowing posteriorly and terminates into a broad truncate apical margin ( Fig. 96C ). It also differs by the possession of a pair of small stiffened tubercles in the intersegmental membrane just before base of subgenital plate.

Description. Medium large species. Head: Face ovoid; forehead with impressed dots and very fine transverse riffles (formerly conserved in alcohol); fastigium verticis about as wide as scapus, separated by a distinct transverse suture from fastigium frontis; lateral ocelli small, of light color; median ocellus roughly triangular, orange; subantennal furrows and subocular furrows distinct ( Fig. 94B ). Abdominal tergites two and three each with two rows of stridulatory pegs (4, 9; 11, 15; n = 1).

Wings surpassing hind knees ( Fig. 94A ). Tegmen: Radius with two branches, both forked in apical area; on right tegmen media anterior free from base, single-branched but with a short connecting branch to CuA1; 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, shortly after it 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. Left tegmen with somewhat deformed veins from basal quarter to middle of tegmen probably due to problems during final moult; on this tegmen MP branches from MA that runs zig zag in that point; CuA1 arises from CuA stem at a point where the curvature of the vein had ended, it then closely approaches MP and afterwards the three veins run in equal distance.

Legs: Fore coxa with a spine at fore margin; fore and mid femora unarmed; fore and mid tibiae with 3 pairs (on mid tibia 2 or 3 pairs) of large ventral spines and 1 pair of smaller ventral spurs; hind femur with 8–11 external and 13–14 internal spines on ventral margins (basal spines very small); hind tibia with spaced spines on both dorsal margins, ventral margins without pre-apical spine; with 3 apical spurs on both sides.

Coloration. General color light brownish with indistinct marks on pronotum. Face maroon; fastigium frontis, lower part of clypeus, upper area of labrum and bordering areas of mandibles of lighter color. Tegmen yellowish semi-transparent; veins and veinlets yellow, darker towards base; hind wing semi-transparent white; veins yellow, towards base brown; cross-veins greyish.

Male unknown.

Female. Seventh abdominal sternite distinctly shorter than preceding sternites, with a medial furrow. In the intersegmental membrane before subgenital plate with a small oval pit with stiffened tubercle at both sides. Subgenital plate large, in about proximal two thirds ventrally swollen and with convex lateral margins, in about apical third flat with straight converging lateral margins; apical margin wide, truncate with rounded lateral angles ( Figs. 96 B–C). Ovipositor long, faintly curved, nearly substraight; tip subacute ( Fig. 96A ).

Measurements (1 female).—body w/wings: 35; body w/o wings: 27; pronotum: 7.0; tegmen: 28.0; tegmen width: 8.5; hind femur: 18.0; ovipositor: 23 mm.

Etymology. The new subspecies is named after the type locality; noun in apposition.

Papuogryllacris leeuweni ( Karny, 1930b)

Figs. 2D , 94E , 95H

Material examined. Indonesia: Papua, North New Guinea, Mamberamo, Albatros Bivak, (2°17'S, 138°1'E), 1– 31.v.1926, coll. W. Docters v. Leeuwen, North New Guinea Exped.— 1 male (allotype det. Karny) (Wien NHMW) .

Diagnosis. P. leeuweni differs from other species of the genus by the shape of the tegmen that does not have the apical area simply rounded or oval but at anterior margin angularly rounded and at hind margin rounded ( Fig. 94E ). The male apical tergite is provided with a pair of black teeth. The male subgenital plate has the medio-apical projection rather wide with concave lateral margins and terminates into two rounded deviating lobes not fully reaching tip of styli ( Fig. 95H ).

Figures

FIGURE 2. A, Melaneremus sikkimensis sp. nov. male holotype; B, Papuogryllacris ligata bundi ssp. nov. male holotype; C, Gryllacris signifera signifera (Stoll, 1813); D, Papuogryllacris leeuweni (Karny, 1930) male; E, Eugryllacris serricauda sp. nov. female; F, Capnogryllacris (C.) e. erythrocephala Gorochov, 2003; G, Asarcogryllacris (A.) parapat sp. nov. female holotype; H, Asarcogryllacris (A.) macilenta macilenta (Pictet & Sauss., 1891) female lectotype; I, Zalarnaca (Zalarnaca) maninjau sp. nov. male holotype.—A–B, body and legs ventral view showing the ventral tibial spines (arrows); C–D, habitus lateral view with the ventral tibial spines (black arrow) and the presence (C, also F) or absence (D) of ventral pre-apical spines on hind tibia (blue arrow); E–F, abdominal apex with ovipositor in lateral view, red arrows mark the widened (E) or simple (F) ovipositor apical area, the green arrow marks the lateral furrow of the ovipositor with widened apical area; G, venation of left tegmen; H, venation of right tegmen; I, apical area of right hind tibia and tarsus. Abbreviations of veins as in Fig. 1.

FIGURE 94. Genus Papuogryllacris: A–B, P. diluta baiteta ssp. nov. female holotype; C–D, P. rugifrons sp. nov. female holotype; E, P. leeuweni (Karny, 1930) male "allotype"; F–G, P. diluta huoniana (Griffini, 1909) female; H–I, P. ligata bundi ssp. nov. male holotype. The arrow in H marks the point where a branch from MA and CuA touch each other but do not fuse (insert image).—Habitus dorsal view (A, C, E, F, H), face (B, D, G, I). Scales 10 mm (body) or 5 mm (face).

FIGURE 95. Genus Papuogryllacris: A–D, P. ligata bundi ssp. nov. holotype; E–F, P. diluta huoniana (Griffini, 1909); G, P. t. trianguligera (Griffini, 1911); H, P. leeuweni (Karny, 1930); I, P. rugifrons sp. nov. holotype.—Male abdominal apex in about ventral or oblique ventral view (A–C, E, G–H; C in higher magnification), stridulatory pegs on second and third abdominal tergites, front is left (D, F, I).

FIGURE 96. Genus Papuogryllacris: A–C, P. diluta baiteta ssp. nov. holotype; D–F, P. rugifrons sp. nov. holotype; G–I, P. diluta huoniana (Griffini, 1909); J, P. diluta diluta (Griffini, 1909) paratype.—Female habitus lateral view (A, D), female end of abdomen with seventh sternite, subgenital plate and base of ovipositor in lateral (B, E, H) and in ventral view (C, F, I–J), ovipositor (G). Scales 10 mm.