PSOROPHORA JAMAICENSIS 583 



about one-fourth as long as proboscis; vestiture black, broadly white at tip; 

 setae moderate, black. Antenna slender ; joints subequal, black, rugose, pilose, 

 basal joints shorter than distal ones ; second joint pale at base ; tori subspherical, 

 with a cup-shaped apical excavation, dark brown, slightly pruiuose, with nar- 

 row whitish scales ; hairs of whorls rather short, sparse, black. Clypeus promi- 

 nent, conically rounded, brown, nude. Eyes black. Occiput narrow, deep 

 brown, clothed with very narrow, curved, shining pale scales and rather numer- 

 ous upright, very slender, short black forked scales, dense and broader and with 

 a brown luster on the nape ; bristles along margin of eyes mostly black, a few 

 pale ones at vertex. 



Prothoracic lobes moderate, narrow, remote dorsally, sparsely clothed with 

 very narrow, curved pale-golden scales and black bristles. Mesonotum black- 

 ish brown, the impressed bare dorsal stripes apparent at anterior margin, 

 obsolete behind; vestiture of fine, narrow, curved reddish-brown scales inter- 

 mixed with pale golden ones, the pale scales form three ill-defined bars on ante- 

 rior margin and on the disk a pair of rounded spots which are on the edges of 

 the lateral depressions ; pale scales also in front of the aute-scutellar bare space 

 and marginally, particularly above roots of wings; bristles rather short, numer- 

 ous, black. Scutellum trilobate, middle lobe prominent, grayish luteous, vesti- 

 ture of narrow, curved pale-golden scales, each lobe with about ten black bristles. 

 Postnotum elliptical, prominent, brown with a slight pale pruinosity, nude. 

 Pleurfe and coxs brown, clothed with narrow, elliptical, flat white scales and a 

 few dark setas. 



Abdomen subcylindrical, tapering posteriorly, the cerci exserted ; dorsal vesti- 

 ture of black and white scales, the white ones tending to form transverse apical 

 bands, more distinct on basal segments, triangular on second and third, more 

 confused on succeeding ones and forming irregular submedian patches as well 

 as apical lateral spots and medianly divided apical bands ; venter clothed mostly 

 with pale ochraceous scales, the dark ones forming a double row of subapical 

 segmentary spots. 



Wings rather broad, hyaline; petiole of second marginal cell about half as 

 long as its cell or even shorter, that of second posterior cell about the same pro- 

 portion ; basal cross- vein distant more than its own length from anterior cross- 

 vein; veins brown; scales rather broadly triangular with blunt tips, black and 

 white intermixed, the black predominating; at base of third vein is a small, 

 dense patch of black scales; outstanding scales on outer half of wing broadly 

 linear, mostly blackish; fringe brown, appearing paler in patches by reflection. 

 Halteres pale whitish. 



Legs rather long and slender with long coarse setae, especially on tips of 

 femora ; femora black scaled, peppered with white, narrowly white at base and 

 tip and with a subapical white ring; knees white ; tibiae black, with many little 

 round patches of white scales ; tarsi black, each joint with a small white basal 

 ring, first tarsal joint of middle and hind legs wdth a small median ring in addi- 

 tion ; front tarsi with the last two joints and mid tarsi with the last joint en- 

 tirely black. Claw formula, 0.0-0.0-0.0. 



Length : Body about 4.5 mm. ; wing 4 mm. 



Male. Proboscis straight, rather long and slender, uniform, dark scaled 

 throughout. Palpi exceeding the proboscis by nearly the length of the last two 

 joints, which are long, slightly thickened and upturned ; vestiture black, mem- 

 brane showing in a whitish ring before middle of long joint, patches of white 

 scales at bases of last two joints; apex of long joint and last two joints with 

 dense, long black hairs. Antennae plumose ; last two joints long, pilose, the 

 others shortened, the annular incrassations at origins of whorls black, terminal 

 parts of joints pale ; hairs of whorls numerous, long, brown. Coloration similar 

 to the female. Abdomen long, strongly depressed, with long and abundant pale 



