Dineutus (Cyclous) spinosus Fabricius, 1781

Deepa, Jaiswal, Shankar, Shiva, Kumar, Devadoss, Madasamy, Karuthapandi, Jadhav, Shrikant & Sulthana, Rehanuma, 2023, Molecular and Morphological identification of the genus Dineutus MacLeay, 1825 (Coleoptera, Gyrinidae) from Eastern Ghats, India, Journal of Insect Biodiversity and Systematics 9 (3), pp. 499-512 : 503-505

Dineutus (Cyclous) spinosus Fabricius, 1781 ( Figs 2B, 2E, 2H)

Gyrinus spinosus Fabricius, 1781 , 1:298; Dineutus (Spinosodineutus) spinosus Vanirani, 1984:17–20 .

Material examined. India, Odisha, 1♀, Pharuasahi (19°10'31.08''N, 84°22'22.8''E), 21.i.2022, Reg. No. FBRC /ZSI/INS/3342 ; 2♂♂, 1♀, Yellow Dam (18°50'5.28''N, 82°34'57''E), 18.i.2022, Leg.: J. Deepa & S. Shankar, Reg. No. FBRC /ZSI/INS/3343 ; Andhra Pradesh, 2♂♂, 1♀, Kandeleru reservoir (14°38'33.72''N, 80°1'4.8''E), 14.x.2018, Reg. No. FBRC /ZSI/INS/1549 ; 1♂, 5♀♀, Jonnavada (14°27'13.32''N, 79°51'34.92''E), 17.xii.2018, Reg. No. FBRC /ZSI/INS/2137 ; 1♀, Relli lake (17°48'35.28''N, 83°19'45.84''E), 21.xii.2020, Reg. No. FBRC /ZSI/INS/2230 ; 5♂♂, 4♀♀, Thatipudi reservoir (18°10'42.96''N, 83°12'15.48''E), 26.xii.2019, Reg. No. FBRC /ZSI/INS/2272 ; 1♂, Rollapadu Wildlife Sanctuary (15°27'3.6''N, 78°7'17.4''E), 18.xi.2021, Leg.: J. Deepa & S. Shankar, Reg. No. FBRC /ZSI/INS/2780 ; Telangana, 4♀♀, Marredmadine (16°10'1.56''N, 78°26'57.84''E), 27.xii.2018 Reg. No. FBRC /ZSI/INS/2407 ; 1♂, 1♀, Billakal (16°15'51.84''N, 78°38'11.76''E), 17.ix.2019, Leg.: J. Deepa & S. Shankar, Reg. No. FBRC /ZSI/INS/1599 ; Tamil Nadu, 2♂♂, 5♀♀, Kottachedu Kari (11°49'9.84''N, 78°16'9.12''E), 7.i.2019, Leg.: J. Deepa & S. Shankar, Reg. No. FBRC /ZSI/INS/2699 .

Diagnostic characters ( Figs 2B, 2E, 2H). Body size 6.5–8.5 mm, body oval, slender, elongate, depressed posteriorly, head black, bronze sides, clypeus reflecting pale, densely punctated, reticulated, antennae six segmented, pronotum black or bronze, margins yellow, scutellum small, elytra black or bronze, variable, 7 striae discernible, punctures clear, apexs with acute double truncature and parasutural spines present, Sutural angle obtuse, straight, ventral side of body testaceous to ferruginous, legs brownish, metacoxal process truncate, median lobe shorter then parameres, somewhat narrowed to apex. Paramere with dense setetion.

Distribution. Oriental ( Bangladesh, India [Andhra Pradesh, Assam, Bihar, Manipur, Meghalaya, Odisha, Tamil Nadu, Telangana, Utter Pradesh, West Bengal], Malaysia, Myanmar, Thailand, Vietnam); Palaearctic ( Pakistan [Sindh]) ( Vazirani, 1984; Mustafa & Zubair, 2015; Deepa et al., 2022).