190 Journal Xew York Entomological Society, t^'o'- ^^^' 



THREE NEW GALL MIDGES (DIPT.). 



By E. p. Pelt, 



Alhanv. X. Y. 



The three species of Itonids described below were reared from 

 a section of a dead, partly decayed wild fig branch collected at 

 Paraiso, Panama, by Air. E. A. Schwarz, in connection with the bio- 

 logical survey of the isthmus under the auspices of the Smithsonian 

 Institution. Many of the specimens were reared by Mr. H. S. Barber 

 at Washington, while a few issued from material sent the writer. 

 The types will be deposited in the National Muscuul 

 Holoneurus occidentalis, new species. 



Larva. — Length 3 mm., slender, reddish orange, with distinct and widely 

 separated pseudopods. Head moderately large and with long antenna, the 

 latter with a length four times the diameter. The dorsal part of the head 

 appears- to be chitinized and attached thereto are submedian, strongly curved, 

 stout, hooked, chitinous processes. The head is ornamented with a numljer 

 of long, slender setae. Skin coarsely shagreened : breastbone distinct, ex- 

 panded anteriorly, bidentate posteriorly, tapering to a rudimentary extremity ; 

 each segment with a transverse series of six long setK dorsally near the pos- 

 terior margin, and laterally with one or two setse near the anterior third ; the 

 I)osterior extremity broadly rounded and on each side three submedian tubercles, 

 each bearing a long seta. 



Male. — Length i mm. Antenn.T a little longer than the body, sparsely 

 haired, yellowish brown; 16 segments, the fifth having a stem one-fourth 

 longer than the cylindric basal enlargement, which latter has a length over 

 twice its diameter, a sparse basal whorl of short setw and a rather thick sub- 

 apical whorl of much longer, stout seta; ; terminal segment reduced. Palpi ; 

 first segment quadrate, with a length over twice its diameter, the second 

 stouter, one-half longer than the first, the third one-half longer than the 

 second, more slender, the fourth a little longer and more slender than the 

 third. Mesonotum fuscous yellowish, Scutellum yellowish red, postscutelluni 

 yellowish. Abdomen mostly fuscous yellowish. Wings hyaline, costa pale 

 straw, the third vein uniting therewith at the apex of the wing, the fifth 

 simple. Halteres j-ellowish transparent. Coxae and legs pale straw, the distal 

 tarsal segments somewhat darker. Genitalia ; basal clasp segment short, 

 stout, truncate ; terminal clasp segment short, stout, broadly rounded and 

 spinose apically ; dorsal plate rather long, deeply and roundly emarginate, the 

 lobes obliquely rounded distally ; ventral plate bilobed. Harpes linear, 

 chitinous ; style short, stout, narrowly rounded apically. 



