Aulonogyrus (Aulonogyrus) obliquus (Walker)

Gupta, Devanshu, Sonali, Shipra, Wani, Irtiza, Ghosh, Priyanka, Ghosh, Asim Kumar & Ghosh, Sujit Kumar, 2025, A comprehensive taxonomic review of Indian Gyrinidae (Coleoptera): new combinations, geographic distribution, and annotated species checklist, Journal of Natural History 59 (17 - 20), pp. 1267-1338 : 1294-1296

Aulonogyrus (Aulonogyrus) obliquus (Walker)

( Figures 6 (d), 14(d))

Gyrinus obliquus Walker, 1858, p. 205 ; Motschulsky 1861: 109. Aulonogyrus obliquus : Régimbart, 1883: 137; Regimbart 1893: 104; Régimbart 1902: 470; Régimbart 1903: 334; Zimmermann 1917: 142; Ochs 1930: 3; Vazirani 1958: 16; Ochs 1966b: 179; Mukherjee 1966: 64; Vazirani 1984: 26; Mukhopadhyay et al. 2000: 81; Mukhopadhyay and Ghosh 2007: 443.

Type locality

Ceylon ( Walker 1858).

Material examined

INDIA: Andhra Pradesh: Prakasam, Eastern Ghats , 15.41835°N, 78.788956°E, 15 June 1929, 6 exs ., leg . H .S . Pruthi [9456–9461/H4] . Tamil Nadu: Nilgiri, Ooty , 11.41030°N, 76.695032°E ,

11 October 1919, 1 ex., leg . C . Paiva [985/H4]; Kodaikanal, Lake area, Madurai, Alt . 2135 m, 9 December 1975, 14 exs., leg . S .K . Gupta [30490/H4A]; Aravan Kada – around cordite factory, Nilgiri , 26 December 1975, 11 exs ., leg . S .K. Gupta [30491/H4A]; Dindigul, Sirumalai, 10.19424°N, 77.996704°E, 12 January 2019, 3 exs., leg . Sewtapadma Das [25989/H4A] . West Bengal: Kolkata, 22.56386°N, 88.346952°E, 7 January 1926, 1 ex . [1000/H4] .

Distribution in India ( Figure 14 (d))

Andhra Pradesh (Prakasam), Kerala ( Silent Valley National Park , Kochi ‘Cochin’), Madhya Pradesh (Rewa), Meghalaya (Garo Hills), Puducherry (Karaikal), and Tamil Nadu (Chennai ‘Madras’, Palni Hills: Kukha, Kodaikanal; Nilgiris Hills: Ootacamund, Coonor, Neduvattam, Salem, Shevaroys, Yercaud; Annamalai Hills: Cinchona, Kadamparai; Madura; Kodaikanal: Shenbaganur) .

Figures

Figure 6. Habitus (in dorsal view): (a) Dineutus (Cyclous) indicus indicus Aubé; (b) D. (C.) spinosus spinosus (Fabricius); (c) D. (C.) unidentatus (Aubé); (d) Aulonogyrus (Aulonogyrus) obliquus (Walker).

Figure 14. Map of India showing the distribution of Indian species of Gyrinidae: (a) Dineutus (Cyclous) indicus himalayensis, D. (Cyclous) unidentatus; (b) D. (Cyclous) indicus indicus; (c) D. (Cyclous) spinosus spinosus; (d) Aulonogyrus (Aulonogyrus) obliquus.