Patrus similis ( Ochs, 1929a ), 2025

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 : 1325

Patrus similis ( Ochs, 1929a) comb. n.

( Figures 13 (c), 18(b))

Orectochilus similis Ochs, 1929a, p. 251 .

Orectochilus (Patrus) similis : Ochs 1930: 34; Vazirani 1984: 49, figs. 18 F, 35 F, 45A; Biswas et al. 1995: 129; Ghosh and Mitra 2014: 67.

Orectochilus sublineatus Régimbart, 1891: 605 .

Orectochilus (Patrus) sublineatus : Mazzoldi 1995: 165.

Type locality

Assam, Shillong ( Ochs 1929a).

Type material

‘ Assam / Shillong / 4,500 –5,000 ft . // Typus // 222 h4 // Orectochilus similis Ochs’ [ NZSI]. Another specimen with the same locality and label data [923H4] [ NZSI] .

Distribution in India ( Figure 18 (b))

Meghalaya (Shillong) and West Bengal (‘Calcutta’ Kolkata, Sunderban Biosphere Reserve, South 24 Parganas, Brahmani River ) .

Global distribution

China, India, and Laos.

Figures

Figure 13. Habitus of type specimens (in dorsal view) with attached label data:(a) Orectochilus orissaensis Vazirani, holotype [current name: P. orissaensis (Vazirani)]; (b) O. ribeiroi (Vazirani), holotype [current name: P. ribeiroi (Vazirani)]; (c) O. similis Ochs, type [current name: P. similis (Ochs)]; (d) O. volubilis (Ochs) [current name: P. volubilis (Ochs)].

Figure 18. Map of India showing the distribution of Indian species of Gyrinidae. (a) P. neglectus, P. cribratellus cribratellus, P. cribratellus metallescens; (b) P. similis, P. ritsemai; (c) P. limbatus; (d) P. ribeiroi, P. marginipennis angustilimbus, P. marginipennis marginipennis, P. nathani, P. metallicus, P. uttarpradeshensis.