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

publication ID 10.11646/zootaxa.4510.1.1

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Papuogryllacris diluta baiteta

subsp. nov.

Papuogryllacris diluta baiteta View in CoL ssp. nov .

Figs. 94 View FIGURE 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). GoogleMaps

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 View FIGURE 96 ). 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 View FIGURE 94 ). Abdominal tergites two and three each with two rows of stridulatory pegs (4, 9; 11, 15; n = 1).

Wings surpassing hind knees ( Fig. 94A View FIGURE 94 ). 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 View FIGURE 96 B–C). Ovipositor long, faintly curved, nearly substraight; tip subacute ( Fig. 96A View FIGURE 96 ).

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) View in CoL

Figs. 2D View FIGURE 2 , 94E View FIGURE 94 , 95H View FIGURE 95

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 GoogleMaps 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 View FIGURE 94 ). 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 View FIGURE 95 ).


Royal Belgian Institute of Natural Sciences


Naturhistorisches Museum, Wien

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