Opiliosina Desutter-Grandcolas

Desutter-Grandcolas, Laure & Jaiswara, Ranjana, 2012, Phalangopsidae crickets from the Indian Region (Orthoptera, Grylloidea), with the descriptions of new taxa, diagnoses for genera, and a key to Indian genera, Zootaxa 3444, pp. 1-39 : 27-28

Opiliosina Desutter-Grandcolas n. gen.

Type species. Opiliosina meridionalis n. sp.

Other species included. Phalangopsina squamifera Gorochov, 2003a (according to male genitalia, see Fig. 5.13–15 in Gorochov 2003a).

Etymology. Named after the names Opilionacris Sjöstedt , synonymized with Phaeophilacris Walker, 1870 by Kaltenbach (1983), and Phalangopsina Chopard, 1933a .

Distribution. South India.

Diagnosis. Size small. Fastigium wider than scape and rounded; eyes protruding ( Fig. 10 E). Maxillary palpi not very elongate, but thin; joint 5 greatly widened in apical third, truncated ( Fig. 11 B). Pronotum transverse ( Fig. 10 E). TI without tympanum. Legs I and II very thin; TI and TII with two long apical spurs. FIII with a short apical part. TIII inner apical spurs: median and dorsal spurs greatly longer than the ventral one and subequal, the dorsal the longest; TIII outer apical spurs short; dorsal spur clearly longer than the median. TIII with four pairs of subapical spurs, the outer twice as long as the inner, and set more basally on TIII. Metanotum and tergite 1 welldeveloped, clearly larger than abdominal tergites ( Fig. 10 E). Cerci slightly longer than the body. Male. FWs present and lobiform ( O. squamifera : see Gorochov 2003a, Fig. 5.10), or absent ( O. meridionalis Desutter- Grandcolas n. sp.). Metanotum ( O. squamifera : see Fig. 5.10 in Gorochov 2003a) or tergite 1 ( O. meridionalis Desutter-Grandcolas n. sp.) glandular; supra anal plate with elongate lateral parts. Male genitalia: Resembling those of Phalangopsina , but small, rounded and compact ( Fig. 12 ); pseudepiphallic sclerite median lobe flat ( Fig. 12 D); no rami; pseudepiphallic parameres having the shape of acute hooks ( Fig. 12 B, C); epi-ectophallic invagination short dorsally; ectophallic apodemes short, divergent and high ( Fig. 12 A, D); ectophallic fold very close to the pseudepiphallic sclerite, largely membranous, and deeply subdivided apically ( Fig. 12 B); dorsal cavity lacking. Female. Apterous. Subgenital plate emarginate distally. Ovipositor short. Female genitalia: Copulatory papilla flat, concave, sclerotized only distally ( Fig. 11 H–J).

Relationships. Morphologically, this genus is very similar to Phalangopsina Chopard, 1933a (size, transverse pronotum, no tympanum, wide fastigium, FIII shape, TIII apical and subapical spurs). Male genitalia are also similar to those of Phalangopsina , by the pseudepiphallic sclerite separate in a dorsal median lobe and two lateral parts, and the general location of pseudepiphallic parameres. Opiliosina n. gen. differs however by its short and flat pseudepiphallic median lobe (raised dorsally in Phalangopsina ), the lack of an invagination between the pseudepiphallus and the epi-ectophallic invagination (present in Phalangopsina ), the size and shape of pseudepiphallic parameres, the shape of ectophallic fold (long and thin in Phalangopsina ), and the shape of epiectophallic invagination, ectophallic apodemes, endophallic sclerite and endophallic apodeme.

Habitat. Unknown.

Description. Small species with thin legs and a short body ( Fig. 10 D). Head. Fastigium wider than the scape; ocelli settled as a wide triangle, the distance between median ocellus and one lateral ocellus slightly longer than the distance between the lateral ocelli. Eyes protruding ( Fig. 10 E). Maxillary palpi not particularly elongate, but thin; joint 5 greatly widened in apical third ( Fig. 11 B), well longer than joint 3. Scape longer than wide ( Fig. 11 A). Pronotum. Transverse, the anterior angles of lateral lobes only slightly raised dorsally ( Fig. 10 E). Mesonotum mostly hidden under pronotum. Metanotum and tergite 1 elongate. Legs. All very thin. TI without tympanum; two long and thin apical spurs, the inner the longest. TII with two long and thin apical spurs, the inner the longest. FIII filiform on a various apical length. TIII with four pairs of subapical spurs, the outers longer and located higher on tibia, than the inners; outer subapical spur 1 the shortest; three pairs of apical spurs, the dorsal spur the longest on both sides ( Fig. 11 C, D); inner median and dorsal spurs very long; outer dorsal spur about twice as long as the median; TIII serrulated on both inner and outer margins, but with few spines. Basitarsomeres all very long; basitarsomeres III with two rows of dorsal spines, the inner row reduced or lacking.

Male. Metanotum ( O. squamifera , see Fig. 5.10 in Gorochov 2003a) or tergite 1 ( O. meridionalis Desutter- Grandcolas n. sp.) glandular. FWs short and not overlapping ( O. squamifera ) or lacking. Supra anal plate wider than long; lateral sides more or less elongate ( Fig. 11 E). Subgenital plate not very short; a shallow longitudinal distal furrow ( Fig. 11 F).

Male genitalia. Small, rounded and compact. Pseudepiphallic sclerite with a short, rounded and flat median part, almost transverse in O. squamifera , and two short and wide lateral sclerites; rami lacking; pseudepiphallic parameres having the shape of acute, curved hooks ( Fig. 12 ). Epi-ectophallic invagination very short. Ectophallic apodemes short and divergent. Ectophallic fold very close to the pseudepiphallic sclerite, membranous, except laterally close to its base. Endophallic sclerite U-shaped and endophallic sclerite crest-like (in O. meridionalis Desutter-Grandcolas n. sp. only?). Dorsal cavity lacking.

Female. Apterous. Ovipositor very slightly widened at apex; valves without ornementation apically. Female genitalia. Copulatory papilla more or less flat and sclerotized ( Fig. 11 I–J).

Figures

FIGURE 10. Speluncasina annandalei (Chopard, 1928), n. comb. (A – C) and Opiliosina meridionalis Desutter-Grandcolas n. sp. (D – G). A, D, E, Head, pronotum and body shape; B, F, face; C, G, hind femur. Scales 1 mm.

FIGURE 11. Opiliosina meridionalis Desutter-Grandcolas n. sp. A, scape, anterior side; B, maxillary palpus; C, D, apical spurs of hind tibia, inner (C), outer (D); E, male supra anal plate; F, male subgenital plate, lateral; G, female subgenital plate; H – J, female copulatory papilla, dorsal (H), ventral (I), lateral (J). Abbreviations, see text p. ***. Scales 1 mm.

FIGURE 12. Opiliosina meridionalis Desutter-Grandcolas n. sp. male genitalia, dorsal (A), ventral (B), dorso apical (C), lateral (D). Abbreviations, see text p. **. Scale 0, 5 mm.