Leuseriola, Gorochov, 2022

Gorochov, Andrei V., 2022, New taxa of the cricket subfamily Pteroplistinae (Orthoptera: Gryllidae) from Indo-Malayan Region, Amurian Zoological Journal XIV (3), pp. 445-456 : 452-454

Genus Leuseriola Gorochov, gen. nov.

Type species Leuseriola bohoroki sp. nov.

https://zoobank.org/NomenclaturalActs/EF- C387BD-0F8B-4BBB-9148-9F27ED0AB912

Diagnosis. Body (Fig. 1: F, I) rather small for Pteroplistinae , most similar to Changiola in structure but with some characteristic features. Ocelli small, distinct (practically indistinct in Changiola ); male tegmina with chords and mirror slightly shorter (mirror clearly but not strongly transverse in new genus and almost round in Changiola ); outer tympanum moderately small, somewhat smaller than inner one (vs. outer tympanum sometimes almost obliterated); male anal plate simple (Fig. 1: G, J), but male genital plate with rather small posteromedian notch smaller than in Eupteroplistes subgen. nov. and Malaysiola gen. nov. (see Figs. 1: E, H, K–M), in Changiola this notch distinctly shorter than in new genus or almost absent. Male genitalia (Fig. 3: A–J): epiphallus with short (narrow) median part and a pair of posterolateral lobes (as in Changiola ); a pair of semisclerotised anterior plates, also slightly similar to those of Changiola in shape, partly but distinctly fused with formula (in Changiola (Fig. 3: K–M), these plates not fused or almost not fused with formula; compare Figs. 3: A, F and 3: K); ectoparameres basally fused with endoparameres (vs. ectoparameres not fused with endoparameres or articulated with them; compare Figs. 3: B, G and 3: K, L); rachis isolated from endoparameres or articulated with them (vs. rachis clearly fused with endoparameres; compare Figs. 3: B, G and 3: K, L).

Included species. Type species and L. alasi sp. nov.

Comparison. The new genus differs from the most related genus Changiola in the characters listed above, but I cannot exclude the possibility that this taxon may be only a subgenus of the latter genus. From Tembelingiola and Pangrangiola , which also have male genitalia with distinct ectoparameres, it is distinguished by ectoparameres fused with endoparameres and distinctly protruding beyond the epiphallic posterolateral lobes (from Tembelingiola ) or by both clearly longer epiphallic posterolateral lobes and ectoparameres (from Pangrangiola ) (in Tembelingiola ectoparameres do not protrude beyond epiphallic lobes, and in Pangrangiola they barely protrude beyond short epiphallic lobes; see Fig. 3: A–C, F–H, N–S). From all other Pteroplistinae genera Leuseriola gen. nov. differs in the presence of distinct ectoparameres.

Etymology. The new genus is named after the Gunung Leuser National Park which extends near the type localities of both its species.