ALEURODICUS COCOIS. 



51 





Two ocelli, large and conspicuous. Wings large, subopaque, median vein 

 divided at two-thirds wing length. Costa of fore-wing Onely crenulate to tip, 

 furnished with sparse bristles arising below edge of wing. Costa of hind wing 

 with 8 or 9 rather long bristles or hairs near base. Legs slender, moderately 

 long, hind tibia with an internal row of bristles, tarsi 2-jointed, two large tarsal 

 hooks, with a median basal hook-like appendage much smaller than the lateral 

 hooks. Abdomen with six plain tergites, but five visible urites. Sixth tergite 

 bearing a pronounced median curved papilla; ovipositor acute. 



Adult male (fig. 39, k) [fig. 7, A- ].— Resembles the female except in being 

 more slender and longer by virtue of the 

 two large forficular claspers, nearly as 

 long as the entire abdomen and which 

 gave the average specimen a total length 

 of 2.8 uim., as against 2.1 mm. for the 

 female. Between the two claspers is a 

 short curved style rather more than one- 

 third the length of the clasi)er.s. Sixth 

 tergite bears a median papilla and the 

 fourth urite a similar one. Color of 

 abdomen much darker than in female, 

 particularly at hind border of segments; 

 claspers still darker. 



COCKERELL'S DESCRIPTION OF ALEU- 

 RODICUS IRIDESCENS. 



Agrees with A. asarumi.<i in having 

 some blackish coloration at the forking 

 of the wing-vein, but differs in having 

 the body and legs a deep chrome yellow, 

 and the eyes not divided. Length of an- 

 terior wing 2 mm. ; wings noticeably 

 iridescent; a blackish line on the costa. 

 Pupie along the mid-rib of the leaf, as 

 in Aleuroilicus pulviruUa (Maskell as 

 AJeurodes) . surrounded by abundant cot- 

 tony secretion. Pupje dark grey or 

 plumbeous, varying to brownish, struc- 

 tural characters as usual in the genus. 

 Vasiform orifice semicircular; operculum 

 very bi'oad, broadly truncated at end. 

 Four large round orifices on each side of 

 the abdomen, some distance from the 

 margin, but not nearly so large as Maskell 

 figures for iiuUiimta ; four very much 

 smaller orifices in the caudal region, laterad of the vasiform orifice, the two 

 hindmost nearer to each other than are the anterior ones; two of the large 

 orifices at the cephalic end, and also four small ones as in puh-inata, but they 

 are very minute. 



Ilab. — Ocean beach between El Faro and San Pedro, Tabasco, Mex.. June 12, 

 1S97, on " Jicaco," a bush with large leaves growing on the .sand flats (Town- 

 send) Dlv. Ent. 7824. 



In the original description there is little given by means of which 

 this species could be distinguished from others in the same genus. 



.v---\'^ 



^X^'y:^ji'rM. 



Fig. 9. — Aleurodicus cocois: a, Skiu of 

 full-grown larva from below ; b, skin of 

 full-grown larva from above. (From 

 Riley and Howard.) 



