CCELODIAZESIS BARBERI 1037 



ture brown with a blue reflection ; setae rather long, especially at tip. Antennae 

 filiform, the joints subequal, rugose, blackish, with long pile; hairs of whorls 

 sparse, black, short; tori subspherical, with a cup-shaped apical excavation, 

 small, blackish. Clypeus small, rounded elliptical, dark brown, nude. Eyes 

 narrowly separated, black. Occiput with a median groove, brown, clothed with 

 erect forked scales, dense and pale brownish yellow posteriorly, more sparse and 

 white anteriorly, a tuft of fine white hairs projecting forward between the eyes ; 

 a row of black setae along margins of eyes. 



Prothoracic lobes lateral, small but prominent, bearing coarse brown bristles. 

 Mesonotum short, rounded, convex, dull brown, gray pruinose on the disk, the 

 margins almost silvery pruinose, two narrow dark impressed bare longitudinal 

 stripes reaching to antescutellar space ; vestiture of rather sparse yellowish short 

 hairs on the disk, scattered long and coarse blackish ones toward the sides and in 

 a denser series over the roots of wings ; antescutellar space strongly depressed. 

 Scutellum collar-like, luteous brown, with a marginal row of long black bristles. 

 Postnotum elliptical, prominent, brown, nude. Pleurae luteous brown with 

 whitish reflections, coxae yellowish, with a few short hairs, the anterior coxae 

 with a row of long yellow-brown bristles. 



Abdomen subcylindrical, somewhat depressed, truncate at tip, brown, the 

 segments with black apical margins; dorsal vestiture of rather numerous and 

 coarse brown bristles, longer ones at the sides. 



Wings (plate 41, fig. 10) moderate, hyaline; petiole of second marginal cell 

 one-third as long as the cell, that of second posterior cell about as long as its cell ; 

 basal cross-vein distant about its own length from anterior cross-vein ; outstand- 

 ing scales of veins narrowly lanceolate to almost linear, evenly distributed, 

 uniformly brownish black, those on the costa with a blue and bronzy reflection. 

 Halteres with pale stems and black knobs. 



Legs long and slender; vestiture brownish black with a blue and bronzy 

 reflection. Claw formula, 0.0-0.0-0.0. 



Length : Body about 3 mm. ; wing 3.5 mm. 

 IHale. — Palpi slightly longer than the proboscis, the last two joints swollen, 

 forming an elongate club, with a few coarse black bristles ; scale vestiture bronzy 

 black. Antennae plumose ; last two joints long and slender, rugose, black, pilose, 

 the others shorter, whitish, with black basal rings ; hairs of whorls long, dense, 

 brown with yellow silky luster. Coloration as in the female. Abdomen elongate, 

 somewhat depressed, broa&ened toward tip, black; lateral ciliation long and 

 rather dense, brown. Wings narrower than in the female, the stems of the fork- 

 cells longer, the vestiture more sparse. Claw formula, 3.0-0.0-0.0^ 



Length : Body about 3.5 mm. ; wing 3.5 mm. 



Genitalia (plate 38, fig. 857) : Side-pieces scarcely longer than wide, rounded, 

 a stout seta on inner margin beyond the middle ; at base two long spines with 

 contiguous bases, a tuft of long fine hairs from a conical base. Clasp-filament 

 slightly longer than the side-piece and slightly enlarged at base and apex, with 

 a short and stoftt articulated terminal spine. Unci columnar, short, with a 

 rounded tip. 



''Larva, Stage IV (see the figure of the entire larva, plate 85). — Head 

 rounded, elongated, longer than wide, tapering before, frontal portion before 

 insertion of antennae broadly and somewhat fiatly arcuate ; hairs all very small, 

 simple. Antennae subcylindrical, short, very slightly tapered, smooth, a single 

 hair at middle ; three long, equal, smooth, articulated terminal processes. Eyes 

 inconspicuous. Mental plate small, with a median tooth and five on each side, 

 perpendicular and rounded, the first small, the rest subequal and rather regularly 

 spaced. Mandible elongate quadrangular, slightly convex without; a minute 

 serration on dorsal aspect; two pairs of flat appendages near tip, basal pair 

 eiliate, distal pair bent and with long brush-shaped tips, a pair similar but with 

 smaller appendages just before collar ; an outer row of cilia ; terminal dentition 

 of seven very large teeth, the third produced, fourth to seventh progressively 

 shorter ; a square process of fine dentition, four small retracted teeth within ; two 



