116 



sentecl, coutraclicts at once Mous. Bigot's assertion; this is not the 

 venation of LesJcki. Moreover, the figures of the imago show a very- 

 stout form of the body, so that it can not i)ossibly be united with LesMa* 



This is all that is known to me from the literature regarding the at- 

 tempts to fix the systematic position of Ugimyia. Having subsequently 

 seen the imago I was enabled to properly interpret this parasite of the 

 silkworm (cf. Verh. Zool. Bot. Ges., Wien, 1889, Sitz. Ber., p. 51) and ar- 

 rived at the following conclusion : 



Ugimyia sericaricv has all the essential characters of the genus 

 Sturmia Kob. Desv.t and could very well be referred to this genus. It 

 differs, however, from Sturmia by the pubescence of the abdomen, 

 Sturmia having on the dorsum of the first and second abdominal seg- 

 ments marginal macrochetae which are entirely wanting in Ugimyia 

 sericaria\ At the present state of the classification of Tachinida', this 

 difference may be sufficient to consider Ugimyia sericariw as the type of 

 a new genus for which I j)ropose the name Crossocosmia mihi. The 

 characters of this genus are as follows : 



Crossocosmia n. g. — First and second abdominal segments on the dor- 

 sum without marginal and discal macrochetae, the first two joints of the 

 antennal seta very short and almost absent. Everything else as in the 

 genus Sturmia R. Desv. 



The synonymy of the species is as follows: 

 Sturmia (Crossocosmia J sericarice Corn. 



. Ugimyia sericarice Cornalia, 1870 ( Ugimyia serricarice Eond. 1870). 

 Tachina oudji Gu6rin, 1870. (?) Tachina castellanii Guer. (i. litt?). 



In order to distinguish Crossocosmia from other allied genera it suf- 

 fices to point out the following characters which, at the same time, 

 plainly show the close relationship with Sturmia. Front in the $ wide, 

 still wider in the 9 ; in the former the frontal orbits are hairy and 

 furnished with erect bristles which, arranged in a row, descend to the 

 base of the third antennal joint, where they are more approached to 

 the internal margin of the eyes than to the frontal stripe. Besides 

 these there are in the female two anteriorly curved and stronger ex- 

 ternal bristles (orbital bristles). The antennae are inserted above the 

 middle of the eyes, joint 3 being at least twice as long as joint 2. The 

 .eyes are naked,| the palpi well developed, facial ridges nearly parallel, 



* LesMa aurea in the caterpillars of Sesiids (cf. Wachtl., Wien. Ent. Zeit., 1882, p. 

 278; and Brisclike, Schiift. d. Naturf. Ges., Danzig, 1884, Sep., p. 2). 



tThe name Sturmia E. Desv. was cliauged by Eondani to Blepliaripa (Prodrom., 

 1856, I, J). 71); byKowarz to Ctenocnemis (Verh. Zool. Bot. Ges., 1875, p. 460); and by 

 Braner to lilcpharipoda (Denkschr. Akad. Wiss., Wien, 1889, p. 96). All these changes 

 are superfluous) cf. Wien. Ent. Zeit., 1890, ji. 155). In his Fauna, Schiuer united the 

 genus Sturmia with Masicera, but this is no longer admissible in the light of our 

 recent knowledge of the family Tachinid;e. 



t Under strong magnifying power the eyes in Crossocosmia appear to be beset with 

 extremely scattered, short, rod-like, but fine, yellowish hairs, but even under a good 

 lens they appear to be naked, so that the genus can well be placed among those with 

 naked eyes. 



