Trichopalpus, RONDANI, 1856

Ozerov, A. L., 2019, A review of the genus Trichopalpus Rondani, 1856 (Diptera: Scathophagidae) of Russia, Russian Entomological Journal 28 (4), pp. 470-484 : 483-484

KEY TO THE SPECIES OF TRICHOPALPUS RONDANI OF RUSSIA

1. Fore coxa yellow. Katepisternum with 1 strong seta in upper posterior corner and 1 moderate or small seta in upper anterior corner. Male sternite 4 and 5, epandrium, cerci and surstyli as in Figs 12, 18, 24, 30 .................... .................................................... T. punctipes (Meigen)

– Fore coxa black. Katepisternum with 1 strong seta in upper posterior corner only .......................................... 2

2. Femora of legs yellow completely .................................. 3

– Femora of legs black completely or partly ...................... 4

3. Palpus yellow completely. Postpedicel reddish inside at base. Face black (yellow as exception). Male sternite 4 and 5, epandrium, cerci and surstyli as in Figs 7, 13, 19, 25 ................................................. T. fraternus (Meigen)

– Palpus yellow in apical part and black basally, sometimes blackish completely. Postpedicel black completely. Face yellow. Male sternite 4 and 5, epandrium, cerci and surstyli as in Figs 10, 16, 22, 28 .................................... ..................................................... T. nigribasis (Curran)

4. Katepisternum greyish dusted completely ..................... 5

– Katepisternum with shining spot anteriorly .................... 6

5. Femora of legs always black completely. Postpedicel black completely. Face white or yellowish. Male sternite 4 and 5, epandrium, cerci and surstyli as in Figs 11, 17, 23, 29 ............................................ T. obscurellus (Zetterstedt)

– Femora of legs usually black in central part and yellow apically and basally, rarely blackish completely. Postpedicel reddish inside at base. Face black (yellow as exception). Male sternite 4 and 5, epandrium, cerci and surstyli as in Figs 7, 13, 19, 25 ...................................... ..................................................... T. fraternus (Meigen)

6. Fore tibia with one strong posterior seta. Male sternite 4 and 5, epandrium, cerci and surstyli as in Figs 9, 15, 21, 27 .......................................... T. nearcticus (Vockeroth)

– Fore tibia without strong posterior seta. Male sternite 4 and 5, epandrium, cerci and surstyli as in Figs 8, 14, 20, 26 .......................................... T. lacteipennis (Ringdahl)

Acknowledgements. The work was conducted within the state project No AAAA-A16-116021660077-3. I am very grateful to Dr. Olga Ovchinnikova (ZISP) and Mrs. Galina Suleymanova (ZISP) for the loan of the material of Scathophagidae for study. I am also thankful to Dmitry Gavryushin (Moscow) for the photos of adults of T. fraternus and T. punctipes .