Angustogryllacris, 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 : 111

Angustogryllacris gen. nov.

Typus generis: Angustogryllacris bibulbata sp. nov.

Diagnosis. In general habitus the new genus resembles Aphanogryllacris but has strikingly narrow tegmina that do not overlap in midline ( Figs. 37 A–C). Also venation of tegmen resembles that genus but is more strongly reduced due to the narrower wings. It differs from that genus by the specific armature of the male and female abdominal apices. The male eighth abdominal tergite is only little prolonged, the ninth abdominal tergite has the dorsal area flattened, unfurrowed and is gradually sloping posteriorly instead of strongly bent down after basal area and with deep medial furrow, and the apical appendages of the ninth tergite arise from lateral bumps instead of from the area on both sides of a medial furrow ( Fig. 37K ). The male subgenital plate does not project between bases of styli ( Fig. 37J ). The female is unique for the shape of the rather narrow seventh abdominal sternite that has a constriction in midline and a large pit on the anterior side on both sides of the apical widening ( Figs. 37 E–G).

Etymology. The name of the new genus refers to the narrow wings. It is built from the Latin prefix angusto, angustus (narrow) and the stem Gryllacris .

Figures

FIGURE 37. Angustogryllacris bibulbata gen. nov. & sp. nov.: A, Habitus female dorsal view; B, tegmen female, C, tegmen male; D, face; E–G, ventral view on female abdomen with seventh sternite and subgenital plate from specimens in alcohol (E– F) and after drying (G); H–K, male holotype, abdominal apex in apical (H), ventral (I), and oblique lateral view view (J), sickle-shaped process of ninth tergite greater enlarged (K); L, stridulatory pegs on 2nd and third abdominal tergites (front is left); M, ovipositor.