Diaphanogryllacris translucens translucens ( Serville, 1838 )

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 : 174

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https://doi.org/ 10.11646/zootaxa.4510.1.1

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Diaphanogryllacris translucens translucens ( Serville, 1838 )


Diaphanogryllacris translucens translucens ( Serville, 1838) View in CoL

Figs. 54C View FIGURE 54 , 57G View FIGURE 57

Material re-examined. Indonesia: North Sumatra, Medan , leg. L. Fulmek— 1 male (ex coll. Ebner, Wien NHMW) ; South Sumatra, Lampongs, Wai Lima , 1.xi.–31.xii.1921, leg. Karny & Siebers (no. 153)— 1 female (Wien NHMW) ; West Sumatra, Fort de Kock [Bukittinggi], elev. 920 m (0°15'47.36''S, 100°23'1.05''E), 1–31.x.1931, leg. E. Jacobson— 1 female (Wien NHMW) GoogleMaps .

Description. Medium sized to large species. Head: Face ovoid; forehead nearly smooth with scattered impressed dots; fastigium verticis wider than scapus; ocelli distinct; fastigium frontis separated from fastigium verticis by a fine suture; subocular furrows distinct.

Wings nearly reaching tip of stretched hind tibia ( Fig. 54C View FIGURE 54 ). Tegmen: Radius with two branches, both forked near tip; media anterior free from base but leans on radius in subbasal area, occasionally fused for a short distance in subbasal area; cubitus anterior at base with a single branch that forks into two veins, the anterior branch makes a curvature and receives a connection branch from MA, shortly after it divides 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.

Coloration. General color brown with dark marbleization. Face yellow brown, little darker along subocular furrows. Tegmen semi-transparent, suffused with brown, but areas along fore and hind margins clear; hind wing semi-transparent light, along fore margin little suffused; main veins dark brown to black; cross veins yellow to brown.

Male. Eighth abdominal tergite only little prolonged. Ninth abdominal tergite with apical area sloping down; apical margin subtruncate, faintly produced on both sides of middle, margin in between concave and with a pair of short, basically membranous, apically stiff conical projections pointing laterad. Tenth abdominal tergite narrow, band-shaped, in middle with a pair of short, straight, acute projections standing on a little swollen base, pointing dorso-apically and little laterally (Fig, 57G). Epiproct triangular. Subgenital plate little vaulted, apical margin in middle with a pair of compressed lobate projections; styli inserted at apico-lateral angles of subgenital plate.

Female. Seventh abdominal sternite largely membranous; anterior sclerotised area rather short, followed by a transverse groove. Subgenital plate long semi-ovoid, simple. Ovipositor elongate, little curved; tip subacute.

Discussion. The type species of the genus, Diaphanogryllacris translucens , has the male ninth abdominal tergite with the apical margin in middle little projecting as in other species of the genus but apical projections terminating into a spine are completely missing, which is in contrast to most other species assigned to the genus so far. The tenth abdominal tergite is narrow band-shaped, split in midline and provided on both sides of midline with a projection as in other species of the genus that is however simply conical with subacute tip and pointing posteriorly.


Naturhistorisches Museum, Wien

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