Therates batesii, Thomson, 1857

Matalin, Andrey V. & Wiesner, Jürgen, 2023, Revision of the Therates fruhstorferi complex (Coleoptera, Cicindelidae), Zootaxa 5256 (5), pp. 401-433 : 402-403

batesii -species group sensu Wiesner, 2020

Distinguishing diagnosis of Therates fruhstorferi complex

Head glabrous and smooth; clypeus glabrous, with slightly sinuate anterior margin; orbital plates with a single seta in anterior third; frons relatively broad, semi-circular, occiput separated from frons by shallow transverse impression. Antennae short, not or barely extending posteriorly to shoulders; scape with a single long apical seta; antennomeres 2–5 dark-brown or black with yellow-red or brown anterior margins or apices, glabrous except thin apical setae, antennomere 3 the longest, antennomeres 6–11 black, covered by short yellowish hairs along inner side and on dorsal half of outer side, antennomeres 8–11 slightly or clearly flattened. Labrum trapezoid, throughout covered by isodiametric microsculpture, with five–eight apical teeth (two long thin marginal teeth with curved inside apices and three–six short rounded central teeth) and four–seven short apical setae between them, as well as with two lateral and two basal teeth and associated with it setae.

Pronotum glabrous and smooth, rarely finely short-striated, with semi-circular apical lobe, sinuous margined basal lobe, deep anterior and posterior grooves, distinct rear angles and thin shallow midline; thorax glabrous and smooth.

Fore and middle coxae pale, often with light brown posterior surface, hind coxae black with blue or blue-violet tinge and pale central portion; trochanters pale; tibial spurs and claws brown; underside of fore tarsomeres 1–4 densely covered by whitish short hairs.

Elytra with distinct basal, central and apical humps; shoulders glabrous and smooth; apical margin with small sutural spine; epipleura dark-brown or black with indistinct blue-green, blue or violet tinge.

Abdomen black or black-brown, sternites 1–4 with light blue or blue-violet tinge; sometimes sternites 5 and 6 brown.

Aedeagus with rounded apex; internal sack with a short expansion in the base flagellum and relatively long spring.