Singapuriola Gorochov et Tan

Gorochov, Andrej V. & Tan, Ming Kai, 2012, New crickets of the subfamilies Phaloriinae and Pteroplistinae (Orthoptera: Gryllidae) from Singapore, Zootaxa 3525, pp. 18-34 : 26

Genus Singapuriola Gorochov et Tan , new genus

Type species Singapuriola separata sp. n.

Diagnosis. The new genus is somewhat similar to Tembelingiola Gorochov and Changiola Gorochov (Gorochov, 2004b) by the structure of male genitalia, but distinguished from them by the absence of ectoparameres, presence of a pair of large ventral projections on guiding rod sclerites, and rami short; as well as by the absence of distinct endoparameres (only from Tembelingiola ) or position of additional plates of male genitalia which are situated very near guiding rod sclerites (only from Changiola ). From all the other genera of Pteroplistinae , the new genus differs in the same characters in combination with absence of distinct tubercles or spines on anal and genital plates of male, male genitalia symmetrical, epiphallus undivided into two lateral parts, absence of hooks and of additional lobules on posterolateral lobes of epiphallus, guiding rod short and lacking hook-like or spine-like structures, and mold of spermatophore attachment plate rather small and clearly separated from all the other sclerites.

Description. Head with rostrum rounded in profile; this rostrum between antennal cavities approximately as wide as scape; ocelli present, rather large. Inner tympanum large, oval (opened) and not immersed ( Fig. 13 ); outer tympanum undeveloped; hind tibiae with only numerous small dorsal denticles and 3 pairs of short apical spurs; hind basitarsus with 2 rows of dorsal spines (each row with 6 spines); apical spurs of hind basitarsus long but not reaching middle of third tarsomere. Tegmina barely reaching abdominal apex; male tegmina with rather long diagonal vein in dorsal field ( Fig. 46 ) and very short apical area; hind wings not exposed. Anal plate simple and with distal part truncate and flattened dorsally; subgenital plate without spines, without median groove, and with distal part having rather small angular apical notch and a pair of widely rounded lobes near it ( Fig. 14 ).

Genitalia symmetrical, with epiphallus undivided into two lateral parts by membranous area and with a pair of rather simple posterolateral lobes lacking additional subapical lobules; rami very short; guiding rod with a pair of strong sclerites having large projection (directed downwards) on ventral surface; endoparameres undeveloped (possibly fused with sclerites of guiding rod or with a pair of additional plates near this rod); ectoparameres also undeveloped; mold of spermatophore attachment plate small and clearly separated from all other sclerites ( Figs 21–23 , 47–49 ).

Etymology. The genus is named after Singapore.

Species included. The genus comprises of only type species.

Figures

FIGURES 7 – 16. Phaloriinae and Pteroplistinae (schematically): 7, 8, Trellius neesoon sp. n. (7, holotype; 8, paratype); 9, 10, Tremellia timah sp. n. (9, paratype; 10, holotype); 11, 12, Phaloria? jerelynae sp. n., holotype; 13 – 16, Singapuriola separata sp. n., paratypes. Inner side of fore tibia (7, 9, 11, 13); male subgenital plate from below (8, 10, 12, 14); female subgenital plate with base of ovipositor from below (15); ovipositor from side (16). Scale bars 1 mm.

FIGURES 44 – 49. Singapuriola separata gen. et sp. n. (Pteroplistinae): 44, holotype; 45 – 49, paratypes. General view of male from above (44), and of female in living condition (45); right male tegmen (46); male genitalia from side (47), from above (48), and from below (49). Scale bars 5 mm for Fig 44; 1 mm for Fig. 46.

FIGURES 17 – 24. Phaloriinae and Pteroplistinae, male (schematically): 17, 18, Trellius neesoon sp. n., holotype; 19, 20, Phaloria? jerelynae sp. n., paratype; 21 – 23, Singapuriola separata sp. n., paratype; 24, Tremellia timah sp. n., holotype. Genitalia from above (17, 19, 21) and from below (18, 20, 22); mold of spermatophore attachment plate from behind and slightly above (23); ectoparamere from below (24).