Stenocalisius, Heiss & Eckelt, 2025

Heiss, Ernst & Eckelt, Andreas, 2025, Review of the subfamily Calisiinae from Borneo, with description of two new genera and seven new species (Hemiptera: Heteroptera: Aradidae), Linzer biologische Beiträge 57 (1), pp. 47-63 : 50-52

Genus Stenocalisius gen.nov.

T y p e s p e c i e s Stenocalisius temburongensis nov.sp.

E t y m o l o g y Refers to its elongate habitus, stenos (Greek prefix) = narrow, slender.

D i a g n o s i s: Easily recognized and differing from the other known SE-Asian Calisiinae genera e.g. Aradacanthia, by lack of finger-like expansions of the pronotum; from Aradosyrtis and Nipponocalsisus by the elongate habitus and lateral margins of deltg II-VII and its ventral counterpart vltg with each four tubercles (vs. three!).

D e s c r i p t i o n: Habitus elongate oval, about twice as long as wide; colouration yellowish brown with darker markings; scutellum with two ill defined whitish oval spots.

H e a d. Longer than wide; clypeus globular beset with rows of tubercles, antenniferous lobes small, triangular; antennae about as long as width of head, segments I-III shorter and of equal length, IV longer and cylindrical with plaques; eyes oval, inserted in head; vertex with two rows and postocular lobes with a cluster of tubercles; rostrum short, not reaching base of head.

P r o n o t u m. Trapezoidal, lateral margins dentate; anterior part with two, posterior part with four rows of tuberculate carinae and carinate humeri; surface granulate.

Scutellum. Basal elevation with four larger and two smaller tubercles, surface granulate; median carina and lateral margins of scutellum along corium densely beset with tubercles, the posterior margin granulate; exposed rim of corium granulate; disk deeply punctured with irregular sparse larger tubercles.

A b d o m e n. Deltg II-VII reflexed, their lateral margins with two rows of four tubercles on deltg and vltg, the anterior three are darker, the posterior one of lighter colour.; tergal disk covered by scutellum, its lateral margin delimited laterally by a granulate carina¸ spiracles II-VI ventral, VII lateral on deltg VII and visible from above.

F e m a l e. Habitus and colouration basically as male; transverse tergite VIII posteriorly exposed, bearing spiracles VIII.