PROC. ENT. SOC. WASH., VOL. 21, NO. 9, DEC., 1919 201 



8 left 2 + 2 + 2 + 2 + 2 + 2 + 2 + 1 



(a) 9 right 2+0 2 + 2 + 2 + 2+0 2 + 2 + 1 



(a) 9 left 2 + 2 + 2+0 2 + 2 + 2+0 2 + 1 



10 right 2+0 2 + 2 + 2 + 2 + 2 + 2 + 1 



10 left 2+0 2+0 2+0 2+0 2+0 2+0 2 + 1 



anal lobes not at all produced, without chitinization other than that sur- 

 rounding the cerarius, ventrally with one small hair about 71 u long and 

 raesad and cephalad of this with another still smaller, about 30 ;c long; ventral 

 body margins of the other abdominal segments with a similar arrangement, but 

 the hairs much less differentiated in size; anal ring circular or broad oval, 

 stout, with 6 setae, the longest about 107^, placed on a ridge-like thickening 

 of the center of each half of the ring, with an inner and outer row of pores, 

 and with the posterior chitinized portion of the intestine showing in the 

 center of the ring; in addition to the ducts surrounding the cerarii, dorsally 

 and ventrally with fairly numerous scattered circular disk-shaped gland 

 ducts, submarginally with some of the short tubular type, smaller than 

 those surrounding the cerarii, and in the thoracic, and to some extent in 

 the abdominal regions with a few scattered trilocular pores similar to those 

 found in the cerarii; with an occasional long, very slender hair on the body 

 both dorsally and ventrally; with a medium-sized, irregularly circular to 

 oval cicatrix placed medially a little behind the posterior legs on the ventral 

 surface of the abdomen. 



Young Larva. -No specimens definitely recognizable as first stage larvae 

 have been examined. Embryonic larvae are present in the bodies of some of 

 the mounted adults, but it has not been possible to make out details of 

 structure satisfactorily from them. 



Male Larva. About 1 mm. or a little less long, elongate, rather slender, 

 sides of abdomen nearly parallel, but tapering and rounded posteriorly, 

 broadest at the meso- and metathoracic segments, which distinctly bulge 

 outward on each side, the body anterior to this tapering to a rounded 

 point at the head; very pale, slightly greenish yellow, with a tinge of reddish 

 or brownish on the anterior half; antennae and legs whitish, the former about 

 three-fifths the length of the body; body, at least dorsally, with a slight 

 coating of very delicate more or less matted glassy secretion threads. (Notes 

 from living specimen.) 



Male Pupa. Broader and somewhat smaller than larva, bright pinkish 

 in color. 



Adult Male. -About 0.82 mm. long, wing about 0.84 mm. long; antennae 

 10-segmented, the measurements as follows: I, about 43/t; II, 46^:111, 57 /u; 

 IV, 75/z; V, "OM, VI, 96/i; VII, 107^; VIII, 9(> M ; IX, 84^; X, 46 M ; with some 

 hairs on the segments, but with numerous stout peg-like spines, with bluntly 

 rounded tips; with four hemispherical ocelli; legs long and slender, claw and 

 digitules as in the female, the other segments with fairly numerous short 



