136 INSECUTOR INSCITL^J MENSTRUUS 



Wyeomyia cacodcla Dyar & Knab, Smith. Misc. Colls., Quart, iss., 



Hi, 265, 1909. 

 Wyeomyia onidus, pantoia and cacodela Howard, Dyar & Knab, 



Mosq. No. & Cent. Am. & W. I., ii, pi. 5, figs. 33, 34, pi. 6, 



fig. 35, 1912. 



In this species the white margin to the eyes is normally dis- 

 tinct and continuous, though narrow ; there is a faint median 

 pale bronzy shade on the occiput ; the hind tarsi have the last 

 two joints white below, the black area widening at the tip of 

 the fourth joint and, in certain lights, appearing to interrupt 

 /the white there ; but it does not really do so, even in the type 

 of onidus. The fore and mid tarsi are dark in the female ; in 

 the male, the mid legs have a white luster beneath throughout, 

 but the last two tarsal joints are contrastingly black below. In 

 the table of the monograph, we place cacodela first "without 

 a median pale stripe on occiput ;" but in the male type I can 

 see this quite distinctly even with a hand lens. It is less plain 

 in the female type, though traces are visible. Again we say : 

 "Tarsi all dark in the female." This is clearly an error of 

 observation, for the female type shows the usual white mark- 

 ing, although, as the tarsi are rubbed, it is obscure and only 

 visible in the right light. Again we place pantoia also in the 

 section "eyes without a white border ;" but this seems unnec- 

 essary as far as the type series is concerned. On the other 

 hand, specimens reared by Mr. A. H. Jennings from Heliconia 

 at San Pablo, Canal Zone, Panama, the genitalia of which 

 agree perfectly, have all the white markings reduced to obso- 

 ilescence, both the eye-margin and the hind tarsal marking 

 being distinguishable only as traces after prolonged search in 

 special lights. This occurs in both sexes, four specimens. The 

 larval diflferences given in the monograph for cacodcla I think 

 are without specific value. 



The larvas occur in the flower-cups of Heliconia of the types 

 of champneiana, luteofusca, and acuminata in Trinidad and 

 Panama. 

 Decamyia pseudopecten Dyar & Knab. 



Wyeomyia pseudopecten Dyar & Knab, Proc. Biol. Soc. Wash., 

 xix, 139, 1906. 



