Copelatus Erichson, 1832 from Maharashtra, India, with description of three new species and notes on other taxa of the genus (Coleoptera: Dytiscidae: Copelatinae) Author Sheth, Sayali D. Author Ghate, Hemant V. Author Hájek, Jiří text Zootaxa 2018 2018-08-15 4459 2 235 260 journal article 29024 10.11646/zootaxa.4459.2.2 634e23da-84c4-46a4-8bb8-94fcf1637160 1175-5326 1458548 73510C3B-6482-4760-8173-B6E701839940 Key to Copelatus species of Maharashtra 1. Body elongate oval; elytra with more than six dorsal striae..................................................... 2 - Body broadly oval; elytra with six dorsal striae.............................................................. 4 2. Elytra with 11–12 dorsal striae ( C. nigrolineatus group)....................................................... 3 - Elytra with 9 dorsal striae ( C. consors group). Base of pronotum distinctly wider than width of elytra; elytra completely striolate ( Fig. 4 )................................................................... Copelatus maushomi sp. nov. 3. Bigger species (TL: 5.3–6.9 mm ), elytra ochre unicolorous; elytral striae well impressed complete ( Figs 1–2 ). Median lobe in lateral aspect broad in basal three fourths, then narrowing to pointed apex; almost evenly curved except at base ( Fig. 17 )................................................................................ Copelatus deccanensis sp. nov. - Smaller species (TL: 4.0– 4.5 mm ), elytra bicolorous with broad pale transverse basal band; elytral striae shallowly impressed, absent from apical fourth of elytral length ( Fig. 3 ). Median lobe in lateral aspect broad from base to apex, broader in apical half, apex abruptly pointed; not evenly curved ( Fig. 19 )............................ C. schuhi Hendrich & Balke, 1998 4. Elytra with submarginal stria ( C. irinus group).............................................................. 5 - Elytra without submarginal stria ( C. duodecimstriatus group)................................................... 8 5. Median lobe in lateral view with two distinct 'teeth' on ventral side ( Figs 23, 29 ).................................... 6 - Median lobe simply sickle-shaped, without any 'teeth' on ventral side ( Figs 25, 27 ).................................. 7 6. Median lobe in apical third almost straight on dorsal side with distinctly dorsally bent apex ( Fig. 23 ); parameres smooth on inner side ( Fig. 24 )............................................................... Copelatus bezdeki sp. nov. - Median lobe in apical third almost regularly sinuous with shallow emargination before apex on ventral side ( Fig. 29 ); parameres with distinct serration on inner side ( Fig. 30 ).................................. C. schereri Wewalka, 1981 7. Slender species with dorsal coloration uniformly dark except for lateral margin ( Figs 7–8 ). Elytral stria 1 starts at base. Median lobe in apical third gradually narrowing to pointed apex ( Fig. 25 )............................... C. indicus Sharp, 1882 - Broader species with variable, but distinct yellow-black elytral coloration ( Figs 9–11 ). Elytral stria 1 starts subbasally. Median lobe in apical third broad with dorsally bent obtusely pointed apex ( Fig. 27 ).................. C. neelumae Vazirani, 1973 8. Smaller species (TL: 3.7–4.2 mm ). Median lobe almost evenly curved throughout, except basal fourth; apex narrowly pointed ( Fig. 31 ).................................................................. C. cryptarchoides Régimbart, 1899 - Bigger species (TL: 4.9–5.6 mm ). Median lobe broad in basal two thirds, almost straight and narrowing to pointed apex in apical fourth ( Fig. 33 ).............................................................. C. mysorensis Vazirani, 1970