Review of the Cincticostella insolta (Allen, 1971) complex (Ephemeroptera: Ephemerellidae), with description of three new species from northern India and Nepal Author Martynov, Alexander V. Author Selvakumar, C. Author Subramanian, K. A. Author Sivaramakrishnan, K. G. Author Chandra, Kailash Author Palatov, Dmitry M. Author Sinha, Bikramjit Author Jacobus, Luke M. text Zootaxa 2019 2019-01-31 4551 2 147 179 journal article 27608 10.11646/zootaxa.4551.2.2 709324d2-fa93-49df-8dec-4cfe5bbff810 1175-5326 2622700 86ECBAEA-4053-4226-9ED3-B241EF6BF2A9 Cincticostella bifurcata Xie, Jia, Chen, Jacobus & Zhou, 2009 ( Fig. 112 ) Diagnosis . Larvae of C. bifurcata are similar to C. braaschi (see above) and C. femorata because of their significantly flattened bodies, legs and large projections on the pronotum and mesonotum. Cincticostella bifurcata can be distinguished from C. femorata , C. braaschi and other representatives of the insolta complex by the following combination of characters: (i) genae are moderately developed; (ii) anterolateral angles of pronotum with projections directed forward and laterally; (iii) projections of mesothorax not notched; (iv) forefemur without distinct serration along inner and outer margins (only few short marginal protuberances or chalazae can be seen); (v) dorsal surface of forefemur usually with few protuberances or chalazae; (vi) middle and hind femora distinctly flattened; (vii) outer margin of middle femur with a well-developed apical projection; (viii) outer margins of mid- and hindfemora with shallow serration; (ix) inner margins of mid- and hindfemora without serration; (x) abdominal terga V–VIII with distinctly bifurcate projections; (xi) tarsal claw with 2 denticles, basal one larger than distal one. Distribution . Reported from three widespread localities in mainland China ( Xie et al. 2009 ) and India (new data) ( Fig. 153 ). Habitat. Cold, fast-flowing streams with cobble and gravel. Remarks. The larva was adequately described from China by Xie et al. (2009) , and our records represent the first report from India . Adult stages remain unknown. Material examined. INDIA : 3 larvae , Arunachal Pradesh , Lower Subansiri District , Talle Valley , 27.537201 N , 93.959883 E , h ~ 2370 m a.s.l. , 14.iv.2015 , K.A. Subramanian— Reg. No. 5578/H13 .