Regasilus, Curran, 1931

Sánchez, Pável, 2020, Eight new species of Regasilus Curran, 1931 (Diptera: Asilidae: Asilinae) from Peru, Zootaxa 4894 (2), pp. 221-246 : 243-244

publication ID	https://doi.org/ 10.11646/zootaxa.4894.2.3
publication LSID	lsid:zoobank.org:pub:0445D812-2DA7-4BAE-97AC-BD91F74BE4AF
DOI	https://doi.org/10.5281/zenodo.4327251
persistent identifier	https://treatment.plazi.org/id/03AA87F0-2C05-DF00-FF09-811567D5FDE7
treatment provided by	Plazi
scientific name	Regasilus
status

Treatment

Key to the known species of Regasilus View in CoL View at ENA

1. Femora red or brownish, if red then black ventrally.......................................................... 2

‾ Femora wholly black, at most a faint reddish stripe dorsally on hind femora...................................... 5

2. Scutellar disc white setose; hind femora with at most 10–12 anteroventral macrosetae, arranged in a single row.......... 3

‾ Scutellar disc black setose; hind femora with 14–15 anteroventral macrosetae, somewhat arranged in a double row................................................................................................. R. strigarius

3. Katatergal macrosetae black, although some yellowish ones may be present; femora red, black ventrally; tomentum golden cinereous; epandrium broad in lateral view, its apex blunt..................................................... 4

‾ Katatergal macrosetae pale yellowish; femora mainly brown although the base is reddish brown; tomentum predominantly cinereous, almost silvery; epandrium thin in lateral view, its apex pointing downwards ( Fig. 12B View FIGURE 12 )........ R. illapa View in CoL sp. nov.

4. Thorax red, except pronotum and some anterior area of pleura, dark brown; male terminalia reddish; phallus strongly flattened laterally (i.e. wide in lateral view) ( Fig. 16D View FIGURE 16 ).................................................. R. supay View in CoL sp. nov.

‾ Thorax and male terminalia brown; phallus narrow ( Fig. 19D View FIGURE 19 )................................. R. uscovilca View in CoL sp. nov.

5. Ocellar triangle with long macrosetae, although no longer than length of escape and pedicel together; epandrium straight, al- though the apex may have a pointing-down projection; phallus narrow, ejaculatory apodeme short to large.............. 6

‾ Ocellar triangle with quite long macrosetae, about 1.5 times the length of scape and pedicel together. Epandrium apex distinctly angled downwards; phallus strongly flattened laterally, ejaculatory apodeme medium sized.......................... 8

6. Mystacal macrosetae black on the upper face and yellowish bellow; katatergite yellowish setose; epandrium apex blunt; ejaculatory apodeme medium sized to short.................................................................... 7

‾ Mystacal macrosetae wholly black, katatergite as well; epandrium apex with a pointing-down projection ( Fig. 10B View FIGURE 10 ); ejaculatory apodeme large ( Fig. 10D View FIGURE 10 )............................................................ R. huiracocha View in CoL sp. nov.

7. Scutellar disc black setose; macrosetae on antepronotum pale to yellowish; abdomen cinereous tomentose, eighth sternite in males with black macrosetae, phallus quite narrow, ejaculatory apodeme medium sized ( Fig. 6D View FIGURE 6 )......... R. apu View in CoL sp. nov.

‾ Scutellar disc yellowish setose; macrosetae on antepronotum black; abdomen golden tomentose, eighth sternite in males with yellowish macrosetae; phallus narrow and ejaculatory apodeme short ( Fig. 14D View FIGURE 14 ) ......................... R. inti View in CoL sp. nov.

8. One pair of apical scutellar macrosetae; microtrichia in m1 barely present, thus, at first glance the apical third of the wing appears to be not fully darkened; epandrium apex strongly angled, almost at 90° ( Fig. 8B View FIGURE 8 )............ R. chicamac View in CoL sp. nov.

‾ 2 – 3 pairs of apical scutellar macrosetae; apical third of the wing fully darkened, microtrichia also abundant on sides of basal fourth of R 4+5, r–m, and m–cu (i.e. wing seems to have three central dark spots); epandrium apex broad, distinctly angled downwards, though less than 90° ( Fig. 4B View FIGURE 4 )...................................................... R. aiapaec View in CoL sp. nov.