INSECUTOR INSClTLTv MENS'fRUUS 125 



White on mid tarsi on apical half of second, third to fifth 

 joints , megalodora Dyar & Knab 



13. A white spot on vertex of occiput 14 



No white spot on vertex ; wing-scales narrow, ligulate 



homothe Dyar & Knab 



14. Mid and hind tarsi spotted with white in the female 



violescens Dyar & Knab 

 Mid tarsi white-spotted but the hind tarsi all dark 15 



15. Proboscis moderately long; prothoracic lobes violet 16 



Proboscis long ; lobes pale blue ; a blue spot on vertex 



PHiLOPHONE Dyar & Knab 



16. White margm of the eye on less than the lower half; lobes 



with a coppery reflection smithii Coquillett 



The white margin reaching above the lower half of eye, or 

 almost to vertex mataea Dyar & Knab 



(Genitalia) 



1. The three lobes of clasp filament united by membrane, all 



rather broad chrysomus Dyar & Knab 



Lateral lobes free, narrow 2 



2. Three lobes of clasp about equally long; a tuft of hairs from 



the base of the mid lobe 



vanduscei Dyar & Knab, argyrura Dyar & Knab 

 Side lobes of clasp shorter than the mid lobe 3 



3. Apex of mid lobe of clasp pilose only smithii Coquillett 



Apex of mid lobe of clasp capitate with a double tooth 



philophone Dyar & Knab 



Dendromyia chrysomus Dyar & Knab. 



Plioniomyia chrysomus Dyar & Knab, Journ. N. Y. Ent. Soc, xv, 



208, 1907. 

 IVyeomyia chrysomus and matcra Howard, Dyar & Knab, Mosq. 



No. & Cent. Am. & W. I., ii, pi. 3, fig. 14, pi. 4, fig. 17, 1912. 

 IVyeomyia matcea Howard, Dyar & Knab (in part, not Dyar & 



Knab), Mosq. No. & Cent. Am., & W. I., iii, 93, 1915. 



The type of chrysomus is a single male from Panama, the 

 prothoracic lobes of which take a distinct coppery reflection. 

 The types of matcea are two females from Mexico and Sal- 

 vador, the lobes showing little or no coppery tint, being blue. 

 In Mr. Jennings' bred series from Panama, cited in the Mono- 

 graph under matcra, the males have the lobes more coppery 

 tinted than the females, but I think only one species is repre- 

 sented in his series. Certainly Jennings' male is chrysomus, to 



