SPHAEROCERA IN CENTRAL AND SOUTH AMERICA — RICHARDS 233 



sternum with a very transverse obtusely triangular plate attached to 

 the mesosternum, anterior extension short and narrow but not really 

 linear except in one specimen from Higuito. Legs slightly thickened, 

 hindtibiae with a very small anteroventral spur. Pale spots on ab- 

 domen about the same. Sternites 1+2 (fig. 20) represented by a 

 very small circular black sclerotized dot; sternite 3 normally repre- 

 sented by pale membrane only, but by a small elongate dot in speci- 

 men from Albrook Field; sternite 4 rather elongate, considerably 

 narrowed at each end, widest at three-quarters of length from anterior 

 margin, about three times as long as broad or, in the Panama speci- 

 mens, somewhat less; shape of posterior end varying in Costa Rica 

 specimens from rounded truncate to rounded pointed; in Panama 

 specimens the sternite is considerably wider posteriorly and more 

 narrowed anteriorly; sternite 5 rounded crescentic, not very strongly 

 transverse; cerci each with two rather short, straight bristles. 



Costa Rica: San Mateo, Higuito, holotype and paratype 9, Pablo 

 Schild. Paratypes: Costa Rica, 9, Schild (determined to be S. 

 bimaculata Wilhston by Malloch). Panama Canal Zone: Albrook 

 Field, June 19, 1952, 9, F. S. Blanton. Panama: Darien Province, 

 Patino Point, July 12, 1952, 9, F. S. Blanton, USNM type no. 66595. 



This set of five females is somewhat variable but perhaps aU may 

 belong to one species. The female from Albrook Field has a large 

 mite attached to the underside of the mouth parts. 



Sphaerocera (Parasphaerocera) musiphila, new species 



Male. Resembles S. ecuadoria, new species, very closely but differs 

 as follows: Legs yellowish white, apical third of femora and all tibiae 

 slightly darker, femora strongly thickened, anteroventral spur of 

 hindtibia very small. Prosternum with a transverse triangular plate 

 attached to the mesosternum, anterior extension of moderate length, 

 almost Unear. Sternites 1+2 (fig. 21) represented by a strongly 

 transverse central dot and lateral dots that also are transverse; 

 sternite 3 trapeziform, almost as broad as long, anterior margin 

 straight, sides converging posteriorly, slightly concave, posterior 

 margin also slightly concave; sternite 4 transverse, more than twice as 

 wide as long, trapeziform with posterior margin shallowly emarginate, 

 sides straight, diverging posteriorly; sternite 5 almost rectangular, 

 much larger than 4, about fom' times as wide as long; genitalia with 

 ninth tergite somewhat hollowed out on each side, emarginate to 

 receive the cerci, which are separated by a wide V-shaped 

 emargination. 



Panama: bananas, Sept. 8, 1932, holotype cf, CAS. 



