Ombrotrella Gorochov, 2006

Gorochov, A. V., 2025, Taxonomy of Podoscirtinae (Orthoptera: Gryllidae). Part 17: some Madagascan genera and Varitrella, Russian Entomological Journal 34 (1), pp. 19-36 : 20

Genus Ombrotrella Gorochov, 2006

NOTE. This genus was established for only type species ( O. beccalonii Gorochov, 2006 ) described from a single male [ Gorochov, 2006]. But the new material, considered here, shows that the male genitalia of this male were mixed with those of Allotrella analogica Gorochov, 2006 which is also a unique species of the genus Allotrella with a single known specimen. Thus, the descriptions of all these taxa contain erroneous data on their male genitalia and must be corrected.

The external morphology of Ombrotrella type species as well as of a new species from this genus, considered below, is in accordance to the original description of Ombrotrella : the body is rather small and depressed dorsolaterally; head and pronotum are short and low, with large eyes and a more or less angular (in profile) rostrum (this rostrum is approximately equal to the scape in width) as well as distinct ocelli situated more or less transversally ( Figs 1, 3, 6 ); metanotal gland in male is absent; legs are rather short and stout, with the outer and inner tympana open and rather large (elongate); tegmina are long, in male with normal or almost normal stridulatory apparatus having elongate but not large or even partly reduced mirrors ( Figs 2, 4, 5, 7 ); hind wings are clearly longer than the tegmina; proximal part of male anal plate is short and apically looking slightly notched or truncate ( Fig. 18 ), but its distal part is roundly lobule-like and sharply curved downwards or downwards/forwards ( Fig. 19 ); male genital plate is moderately elongate, having the apical part narrow and almost acute ( Fig. 20 ). However, the male genitalia are different from those described in this description: they are long and rather narrow; epiphallus is also long, with an unpaired dorsal (subapical) projection directed upwards, and with a pair of short apical lobes directed backwards; rachis and endoparameres (including endoparameral apodemes) are comparatively short; ectoparameres are long and rather thin; formula has moderately short posterior tongues ( Figs 8, 9, 11, 12, 13, 14, 16, 17 ). All these genital characters as well as some features of the spermatophore ( Figs 10, 15 ) were originally (erroneously) ascribed to the genus Allotrella [ Gorochov, 2006: figs IX, 6–9].

Figures

Figs 1–7. Ombrotrella, male: 1, 2 — O. beccalonii; 3–7 — O. reducta sp.n., holotype (3–5) and paratype (6, 7). Head with pronotum and fore legs from above (1, 3, 6); right (2, 5) and left (4) tegmina; dorsal field of right tegmen (7). Рис. 1–7. Ombrotrella, самец: 1, 2 — O. beccalonii; 3–7 — O. reducta sp.n., голотип (3–5) и паратип (6, 7). Голова с переднеспинкой и передними ногами сверху (1, 3, 6); правое (2, 5) и левое (4) надкрыльЯ; дорсальное поле правого надкрыльЯ (7).

Figs 8–20. Ombrotrella, male: 8–12 — O. beccalonii, holotype (11, 12); 13–20 — O. reducta sp.n., holotype (13–15, 18–20) and paratype (16, 17). Genitalia from below (8, 11, 13, 16) and from side (9, 12, 14, 17); spermatophore from side (10, 15); anal plate from above/behind (18) and from behind/below (19); genital plate from below (20). Рис. 8–20. Ombrotrella, самец: 8–12 — O. beccalonii, голотип (11, 12); 13–20 — O. reducta sp.n., голотип (13–15, 18–20) и паратип (16, 17). Гениталии сниЗу (8, 11, 13, 16) и сбоку (9, 12, 14, 17); сперматофор сбоку (10, 15); анальнаЯ пластинка сверху/сЗади (18) и сЗади/ сниЗу (19); генитальнаЯ пластинка сниЗу (20).