ART. 10 NORTH AMERICAN TACHINID FLIES WEBBER 21 



Meigenia websteri Townsend, Can. Ent., vol. 23, p. 206, 1891. 

 Phorocera promiscua Townsend, Psyche, vol. 6, p. 84-85, 1891. 

 Ypophaemyia malacosomae Townsend, Ins. Ins. Mens., vol. 4, Nos. 7-9, p. 75, 



1916. 

 Parafrontina apicalis Brauer and Bergenstamm, Zweif. Kais. Mus. Wlen, pt. 6, 



p. 115, 1893. 

 Masicera pauciseta Coquillett, Revision of N. A. Tachinidae, p. 114, 1897. 

 Masiceropsis pauciseta (Coquillett) Townsend, Ent. News, vol. 27, p. 178, 1916. 



Meigenia wehsteri Townsend was considered by Coquillett (Revi- 

 sion of N. A. Tachinidae, p. 107; 1897) as a synonym of frenchii. 

 Aldrich, who has seen the tj^pe specimen at the University of Kansas, 

 believes it to be archippivora and not frenchii. According to Town- 

 send's description, the face and front are nearly one-half the head 

 width in female and about one-third in male, arista thickened for 

 more than one-half its length, claws and pulvilli not elongated, all 

 characters which would tend to corroborate Aldrich 's determination. 

 Townsend " evidently still considers the species distinct and further 

 remarks that his recently erected Ypophaemyia malacosomae may 

 prove to be a subspecies of it. In the United States National 

 Museum there is a female specimen (C. V. Riley Collection), 

 labelled " Ypophaemyia wehsteri Tns.," in Townsend's handwriting 

 which I am unable to distinguish from archippivora. Phorocera 

 promiscua Townsend was likewise considered synonymous with 

 frenchii by Coquillett.^' Aldrich has also seen the type specimen of 

 this species and believes it to be archippivora. While the description 

 of P. promiscua best fits archippivora.^ it will equally well apply to 

 an unnamed variety of frenchii that is frequently bred from Mala- 

 cosoma spp. and which, in some instances, so closely approaches 

 archippivora that the separation of the two forms becomes extremely 

 difficult. Townsend ^^ still believes the species to be distinct from 

 frenchii and datanarum although closely related to the latter. For 

 the time being, at least, the species is best disposed of in the 

 archippivora complex. The type specimens of Ypophaemyia mala- 

 cosomae Townsend and Masiceropsis pauciseta (Coquillett) have 

 been examined by the writer and the two species placed in the 

 archippivora complex. Neither of them is identical with the type of 

 archippivora but their counterparts are to be found in a series of 

 specimens reared from host material collected in New England and 

 which is, in most part, inseparable from archippivora. Parafrontina 

 Brauer and Bergenstamm, type apicalis Brauer and Bergenstamm 

 was considered by its authors as a subgenus of Frontina?-*' 



" Ins. Ins. Mens., vol. 4, Nos. 7-9, p. 76. 1916. 

 " Revision, N. A. Tacliinidae, p. 107, 1897. 

 "Smiths. Misc. Colls., No. 1803, p. 18, 1908. 

 »« Zweif. Kais. Mus. Wien, pt. 6, p. 212, 1893. 



