Willemsegryllacris, Cadena-Castañeda, 2019

Cadena-Castañeda, Oscar J., 2019, A proposal towards classification of the Raspy Crickets (Orthoptera: Stenopelmatoidea: Gryllacrididae) with zoogeographical comments: An initial contribution to the higher classification of the Gryllacridines, Zootaxa 4605 (1), pp. 1-100 : 25-28

Willemsegryllacris n. gen.

Diagnosis: Size and shape of body more or less similar to those other medium size gryllacridines ( Fig. 84 ) as Ocellarnaca and Eugryllacris . Head with a medium size and with a very prominent median ocellus, occupy much of the frons ( Fig. 85 ); lateral ocelli rounded and small, space between antennal cavities as wide as 1.5 time the wide of scapus; fore coxa with an unarticulated spine, legs moderately short, robust, with five pairs of movable ventral on fore tibiae and four pairs on ventral margin of middle tibiae; wings well developed, long and little surpassing the apex of abdomen; hind wings hyaline. Abdomen without traces of femoro-abdominal apparatus; 9 th tergite of the male with two lobules (as Zalarnaca but more prominent to the new genus) and with a very small pair of hooks, mostly covered by the lobules; paraprocts and cerci simple ( Fig. 86 ), 10 th tergite short and inconspicuous; male subgenital plate moderately small, transverse, with moderately long and simple styles. Female unknown.

Included species: Type species: Willemsegryllacris barnesi ( Chopard, 1937) n. comb. (before Gryllacris barnesi ).

Etymology: Dedicated to Dr. Luc Willemse as acknowledgement for his help, plus typical terminationgryllacris common to genera of this family.

Comparisión: Willemsegryllacris is similar as Ocellarnaca to the very well developed median ocellus, but in the new genus it is more prominent. Willemsegryllacris differs from Ocellarnaca in a not lobate 9 th tergite and hooks very little developed. From the other Gryllacrae genera, the new genus differs in its very well developed median ocellus, hind wings hyaline in contrast to Pardogryllacris , Lyperogryllacris and Xanthogryllacris .

Distribution: India.

Figures

FIGURES 84–86. Willemsegryllacris n. gen. (W. barnesi n. comb.). 84. Habitus. 85. Frons (see the globose head and conspicuos frontal ocellus). 86. Male terminalia.