A DESCRIPTION OF CINYGMULA UNICOLORATA TSHERNOVA 1979 AND CINYGMULA MALAISEI (ULMER 1927) (EPHEMEROPTERA, HEPTAGENIIDAE) LARVAE FROM THE RUSSIAN FAR EAST

摘要

Larvae of Cinygmula malaisei (Ulmer 1927) and Cinygmula unicolorata Tshemova 1979 from the Russian Far East are described and illustrated. Cinygmula unicolorata larva is similar to those of Cinygmula putoranica Kluge 1980 and Cinygmula uyka Gorovaya et Tiunova 2013, but differs from a C. uyka larva in the absence of gill filaments and from C. unicolorata larva by the form of the first gill (tergalii). In C. unicolorata larva, the upper outer margin of the first gill is rounded, in C. putoranica larva, it is almost straight; gills of C. unicolorata are matte, trachea is poorly expressed, unlike C. putoranica larva having a distinctly brown trachea. The larvae of Cinygmula malaisei are similar to C. irina and C. autumnalis ones, but differ from C. autumnalis larvae in the presence of gill filaments. The C. malaise larva differed from that of C. irina in the rounded outer margin of the first gill, the form of gills VI and VII, and in the size of leg segments.