Minigryllacris perpusilla Ingrisch 2018, sp. nov.
Creators: name: Ingrisch, Sigfrid
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Orthoptera
Gryllacrididae
Minigryllacris

description: Minigryllacris perpusilla sp. nov.
Figs. 78 H–L, 79N–M
Material examined. Holotype (female): East Malaysia: Sabah, Kinabalu area, plantation, 23.i.2001, leg. A. Floren by fogging (tree no. 4)—(Bonn ZFMK).
Other specimens: same data as holotype, leg. A. Floren (tree nos. 1 + 2)— 1 female (paratype, Bonn ZFMK).
Diagnosis. The new species is characterized by its minute size combined with the strongly upcurved ovipositor that is nearly straight behind the basal curvature, the membranous female subgenital plate with a large transverse groove in basal area, and the tegminal venation with the media branching from the common M+CuA base. The absence of a pre-apical ventral spine on the hind tibia is probably due to the strong reduction of size. Differences to other taxa are already discussed under genus.
Description. Small species. Head: Face ovoid; forehead with very fine sculpturing and scattered impressed dots, depressed above and below clypeo-frontal suture that is interrupted in middle; fastigium verticis distinctly wider than scapus, separated by a very fine suture from fastigium frontis; ocelli indistinct; subocular furrows weak (Fig. 79N). Abdominal tergites two and three each with two rows of stridulatory pegs (7–9, 13; 11–12, 13; n = 2; Fig. 78J).
Wings covering about abdomen (Fig. 78 H–I). Tegmen with reduced venation. Radius with radius sector branching in about apical quarter; media fused at base with cubitus anterior, divides at about end of basal third and divides before tip into MA and MP; fused M+CuA single branched at base, divides in about basal quarter into M+CuA1 and CuA2, the first branch then divides again at end of basal third into M and CuA1; cubitus posterior free and single branched throughout; with three anal veins. In the second female (paratype), M divides from CuA1 at beginning of apical third and does not divide further.
Legs: Fore coxa with spine at fore margin; fore and mid femora unarmed; fore and mid tibiae with 4 pairs of rather short ventral spines and 1 pair of smaller ventral spurs; hind femur very thick in basal half, in basal area almost half as high as long (Fig. 78I), with 5–7 external and 7 internal spines on ventral margins; hind tibia with spaced spines on both dorsal margins, ventral margins without pre-apical spine; with 3 apical spurs on both sides.
Coloration. Rather uniformly light brown; pronotum with a pair of indistinct dark brown lateral bands on disc. Tegmen yellowish semi-transparent; hind wing whitish semitransparent, little darker towards tip.
Female. Seventh abdominal sternite wider than long, weakly sclerotised. Subgenital plate membranous and thus not clearly separated from preceding membranous zone, in basal area wide and provided with a large transverse groove, then with approaching lateral margins; apical margin subtruncate or faintly convex (Fig. 78K). Ovipositor strongly upcurved in subbasal area, then nearly straight with faintly approaching margins, in subapical area faintly curved again; tip subacute (Fig. 78L).
Measurements (2 females).—body w/wings: 14.5–15.0; body w/o wings: 14.5–15.0; pronotum: 3.5–3.7; tegmen: 9.5–14.5; tegmen width: 3.2; hind femur length: 7.0–7.5; hind femur greatest height: 3.0; antenna: 130; ovipositor: 6.0– 6.5 mm.
Etymology. The new species is named for its minute size, from Latin perpusillus (minuscule).
description: Published as part of Ingrisch, Sigfrid, 2018, New taxa and records of Gryllacrididae (Orthoptera, Stenopelmatoidea) from South East Asia and New Guinea with a key to the genera, pp. 1-278 in Zootaxa 4510 (1) on pages 221-222, DOI: 10.11646/zootaxa.4510.1.1, http://zenodo.org/record/10072806