Revision of Myiocephalus Marshall (Hymenoptera: Braconidae: Euphorinae), with description of one new species

Abstract

The Palaearctic species of Myiocephalus Marshall, 1898 (Braconidae, Euphorinae) are revised and a new species (M. zwakhalsi sp. n.) from Austria is described and illustrated. A key to the Palaearctic species is provided. Myiocephalus niger Fischer, 1957, is a new record for China and the Nearctic Myiocephalus laticeps (Provancher, 1886) is re-instated as valid species. A lectotype is designated for Aphidius hedini Fahringer, 1929.

A new species of Myiocephalus Marshall (Hymenoptera, Braconidae, Euphorinae) from China

“…Remarks. The new species runs in the key by Tan et al (2019) to M. zwakhalsi, but differs from it as follows: 1) vein cu-a of fore wing distinctly longer than 1-CU1 and vertical (ca. as long as 1-CU1 and oblique in M. zwakhalsi); 2) prepectal carina present medio-ventrally (absent medio-ventrally); 3) scapus yellow dorsally (dark brown); 4) first metasomal tergite of ♀ slender in lateral view (robust); 5) hind coxa rugulose-striate (finely striate); 6) setose part of ovipositor sheath ca.…”

“…The first author examined the collections applying the key of Tan et al (2019) and discovered a new species than it was confirmed by second author and is described below.…”

“…Four species of the genus Myiocephalus are currently known: M. boops (Wesmael, 1835); M. niger Fischer, 1957;M. laticeps (Provancher, 1886); and M. zwakhalsi van Achterberg, 2019 (Tan et al 2019).…”

“…Diagnosis. Laterope large, deep and submedially situated in slender first tergite; head in dorsal view strongly transverse and usually slightly concave anteriorly; eyes enlarged and protruding; clypeus rather narrow; scapus slightly or not enlarged and subequal to or shorter than third antennal segment; maxillary palpi with five segments, labial palpi with three segments; vein 1-SR+M of fore wing absent; vein 1-R1 longer than pterostigma; vein M+CU1 largely unsclerotized; middle and hind legs elongated; metasoma of ♀ strongly compressed with fifth sternite of ♀ finger-like protruding posteriorly; hypopygium of ♀ with long setae apically or hypopygium medially membranous (Tan et al 2019)…”

“…12 ♀, paratype 13 ♂, paratype. Myiocephalus niger Fischer, ♀ 14 first metasomal tergites, dorsal aspect 15 head, lateral aspect 16, 17 Myiocephalus boops (Wesmael), ♂ 16 head, dorsal aspect 17 head, anterior aspect 18 Myiocephalus laticeps (Provancher), ♂, head, anterior aspect 19 Myiocephalus zwakhalsi van Achterberg, ♀, head, dorsal aspect (figures 14-19 fromTan et al 2019). zwakhalsi van Achterberg, ♀.…”