Zanclotus dioktes, Wilder, 1982

Wahlberg, Emma, 2019, Revision and morphological analysis of the Ragadidae (Insecta, Diptera), European Journal of Taxonomy 521, pp. 1-19 : 14

Material examined of Zanclotus dioktes

Holotype USA • ♂; Washington, Mt. Rainer Nat. Park, Edith Cr. at Paradise Park ; 1650 m a.s.l.; 11 Oct. 1979; D. Wilder leg.; USNM.

Allotype

USA • 1 ♀; same data as for holotype; USNM.

Description

Eyes pubescent ( Fig. 7C ); males dichoptic. Scape with setae, postpedicel tapering; stylus tapering. Epipharyngal blades and ventroapical comb present. Postgena with stout spine like setae ( Fig. 7C ). Prosternum separated from proepisternum forming an isolated sclerite; laterotergite bare. Stout spine like setae on anterior face of fore coxa and on inner ventral margin of fore trochanter present; tubercle on fore coxa present ( Fig. 7G ); male fore tarsal claws present. In wings, costal bristle absent; subcosta reaching costa; R 4+5 branched; CuA recurved ( Fig. 9D ). Female: tergite 10 absent. Male: postgonites articulated to hypandrium; ventral surstylus position apical; apex of phallus membranous.

Distribution

Only two species are known, both from Washington State, USA.

Figures

Fig. 7. A–C. Eye and postgena. A. Dipsomyia spinifera Bezzi, 1909 (MTD). B. Hydropeza longipennae (Miller, 1923) (NZAC 04021412). C. Zanclotus dioktes Wilder, 1982 (USNM). D. Dipsomyia spinifera, prosternum and fore coxa (MTD). E. Hydropeza longipennae, prosternum (NZAC 04021412). F–G. Fore coxa and trochanter. F. Hydropeza longipennae (NZAC 04021412). G. Zanclotus dioktes (USNM).

Fig. 9. Right wing. A. Ragas unica Walker, 1837, drawing with terminology on characters (left) and photo (right) (NHRS). B. Dipsomyia spinifera Bezzi, 1909 (MTD). C. Hydropeza longipennae (Miller, 1923) (dark colour is from underlying board to which the wing is glued) (NZAC 04021412). D. Zanclotus dioktes Wilder, 1982 (USNM). E. Iteaphila macquarti Zetterstedt, 1838 (NHRS). F. Anthepiscopus oedalinus (Zetterstedt, 1838) (NHRS-GULI000058764). G. Hormopeza obliterata Zetterstedt, 1838 (NHRS-000061621).