Key to species of erectiloba group

Males (updated from Savchenko 1960)

1. Antenna 13–segmented. Wing fully developed. Prescutum with longitudinal stripes................................. 2

- Antenna 15–segmented. Wing reduced. Prescutum without distinct longitudinal stripes................................................................................................. Tipula (Vestiplex) aptera Savchenko, 1955

2. Head and thorax with average setae (as in Figs 1, 9, 18, 28). Rostrum twice as long as wide. Flagellomeres cylindrical or slightly swollen at base. Abdomen proximally reddish-brown or brownish-yellow......................................... 3

- Head and thorax provided with long black setae. Rostrum lightly longer than wider. Flagellomeres swollen at base. Abdomen black, gray pruinose................................................. Tipula (Vestiplex) setigera Savchenko, 1960

3. Antenna short, reaching before root of the wing if bent backward. Body 14–17 mm long.............................................................................................. Tipula (Vestiplex) erectiloba Alexander, 1940

- Antenna very long, reaching from halfway to the end of the abdomen if bent backward. Body 9.5–11.9 mm long.......... 4

4. Antenna if bent backward, reaching half of the abdomen. Palpus yellowish-brown. Pedicel yellow. Lateral corner of tergite 9 rounded........................................................... Tipula (Vestiplex) pauxilla Savchenko, 1960

- Antenna, reaching the end of the abdomen if bent backward. Palpus black. Pedicel brown. Lateral corner of tergite 9 obtuse (Fig. 4).................................................................... Tipula (Vestiplex) borthi sp. nov.