Gorochov, 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 : 447-450

Subgenus Eupteroplistes Gorochov , subgen. nov.

Type species Pteroplistes (Eupteroplistes) tarbinskyi sp. nov.

https://zoobank.org/NomenclaturalActs/F7F62B- CD-D175-49A2-8445-EA6116EE6270

Diagnosis. Body very similar to that of nominotypical subgenus of this genus in external morphology (Fig. 1: A, B); however, male anal plate with large and rather high dorsomedian convexity almost vertically truncated posteriorly (Fig. 1: C, D) (vs. this plate with a pair of small dorsal hooks or denticles and usually with concavity between them). Male genitalia also somewhat similar to those of nominotypical subgenus but with some characteristic features: epiphallus more or less Hshaped and fused with rami having narrow posterior halves and subapical lamellar widenings in anterior halves (as in Pteroplistes s. str.; compare Figs. 2: A, D and 2: E, F, H), but anteromedian part of epiphallus distinctly sclerotised, curved downwards and separated from rest of epiphallus by membranous area (this part looking like isolated plate between epiphallus and rachis in caudal view; Figs. 2: C, D) (vs. this part not isolated from rest of epiphallus but sometimes semisclerotised or membranous; compare Figs. 2: A and 2: F); ectoparameres absent as well as in Pteroplistes s. str. (but in some species of nominotypical subgenus, posterolateral lobes of epiphallus partly separated from rest of epiphallus and looking almost like ectoparameres; Fig. 2: F); rachis consisting of two isolated sclerotised parts (dorsal and ventral ones) (vs. these parts fused with each other at base; compare Figs. 2: D and 2: E, H); dorsal part of rachis short, wide and almost horizontally lamellar but with not long spine-like posteromedian process (vs. this part clearly narrower and/or with a pair of apical hooks; compare Figs. 2: A, B and 2: F, G); ventral part of rachis similar to its dorsal part in shape but less lamellar and with semitubular posteromedian process (vs. this part much longer and more gradually widening to base; compare Figs. 2: B, D and 2: E, G, H); endoparameres looking like a pair of elongate sclerites clearly not contacting each other and widely separated from both pairs of anterior arcuate plates (vs. endoparameres almost contacting each other in short distance and articulated or fused with upper (first) of these arcuate plates; compare Figs. 2: A, B and 2: F, G).

Included species. Type species only.

Comparison. The new subgenus differs from the nominotypical subgenus in the characters listed above. From all the other genera of Pteroplistinae , it is distinguished by the body larger, tegmina longer, male anal plate with the morphological specialisation mentioned in the diagnosis (vs. this plate simple, i.e. without any distinct specialisation), and by the following important features of the male genitalia and male genital plate: from Kerinciola and Tramlapiola , by the rachis distinctly wider and with its dorsal and ventral parts isolated from each other; from Tembelingiola , Changiola and Pangrangiola , by the absence of ectoparameres and less simple structure of the rachis; from Crockeriola , by the same rachial structure and less complex shape of the posterolateral epiphallic lobes; from Singapuriola , by the rami much longer and rachis undivid- ed into a pair of lateral sclerites; from Asymmetriola , in the male genitalia completely

Рис. 1. Pteroplistes Br. -W., Leuseriola gen. nov. и Malaysiola gen. nov., самец: A–E — P. (Eupteroplistes) tarbinskyi subgen. et sp. nov.; F–H — L. bohoroki sp. nov.; I–K — L. alasi sp. nov.; L — M. tabulophila tabulophila (Gor.) ; M — M. t. insularis subsp. nov. ГоΛова спереÃи (A); наÃкрыΛья с бΛижайшими участками Ãругих частей теΛа (B) и также со всеми переÃними частями теΛа (F, I) сверху; вершина брюшка сзаÃи (C); анаΛьная пΛастинка с бΛижайшими участками Ãругих частей теΛа (D, G, J); генитаΛьная пΛастинка снизу (E, H, K–M)

Fig. 1. Pteroplistes Br. -W., Leuseriola gen. nov. and Malaysiola gen. nov., male: A–E — P. (Eupteroplistes) tarbinskyi subgen. et sp. nov.; F–H — L. bohoroki sp. nov.; I–K — L. alasi sp. nov.; L — M. tabulophila tabulophila (Gor.) ; M — M. t. insularis subsp. nov. Head in front (A); tegmina with nearest portions of other body parts (B) and also with all anterior parts of body (F, I) from above; abdominal apex from behind (C); anal plate with nearest portions of other body parts from above (D, G, J); genital plate from below (E, H, K–M)

Рис. 2. Pteroplistes Br. -W., Malaysiola gen. nov. и Kerinciola Gor. , самец: A–D — P. (Eupteroplistes) tarbinskyi subgen. et sp. nov.; E — P. (Pteroplistes) borneoensis borneoensis Gor. ; F–H — P. (P.) lagrecai Gor. ; I–L — M. tabulophila tabulophila (Gor.) ; M, N — M. t. insularis subsp. nov.; O–Q — K. sonora Gor. ГенитаΛии сверху (A, F, I, O), снизу (B, G, J, P), сзаÃи (C) и сбоку (D, E, H, K, Q); заÃняя часть эпифаΛΛуса сверху (M); рахис сзаÃи и сΛегка сбоку (L, N). Сокращения: 1, 2 — первая и вторая переÃние ÃуговиÃные пΛастинки; d — ÃорсаΛьная часть рахиса; e — эпифаΛΛус; en — энÃопарамер; f — формуΛа; m — вентраΛьная мембранозная ваΛьва; p — заÃнесреÃинная часть эпифаΛΛуса; r — рамус; ra — рахис; v — вентраΛьная часть рахиса

Fig. 2. Pteroplistes Br. -W., Malaysiola gen. nov. and Kerinciola Gor. , male: A–D — P. (Eupteroplistes) tarbinskyi subgen. et sp. nov.; E — P. (P.) borneoensis borneoensis Gor. ; F–H — P. (Pteroplistes) lagrecai Gor. ; I–L — M. tabulophila tabulophila (Gor.) ; M, N — M. t. insularis subsp. nov.; O–Q — K. sonora Gor. Genitalia from above (A, F, I, O), from below (B, G, J, P), from behind (C) and from side (D, E, H, K, Q); posterior part of epiphallus from above (M); rachis from behind and slightly from side (L, N). Abbreviations: 1, 2 — first and second anterior arcuate plates; d — dorsal part of rachis; e — epiphallus; en — endoparamere; f — formula; m — ventral membranous valve; p — posteromedian part of epiphallus; r — ramus; ra — rachis; v — ventral part of rachis symmetrical and male genital plate without spines.

Etymology. The new subgeneric name consists of the generic name Pteroplistes and the Latinised Greek prefix “eu-” (true), because the general appearance of this subgenus is very similar to that of Pteroplistes s. str.