NO. 1362. ALEYHODIDS OF CALIFOHNIA—BEMm. 493 



lu'urly llicir width, these are not contimious on inediiiii line; seonicnts 

 5 and 7 have transverse hands as wide as the sei;nients; from seo- 

 nients 8 to 7, inohisive, the transverse ])ands ])econie oradually h)n<^"or; 

 from segment 7 to genitalia, and surrounding the vasiform orifice, is 

 a suhcircular, l)road band which is narrow cephalad of the orifice and 

 nuu'h wider caudad of it; on tlie venter or lat(M-o-venter, there is a 

 k)ngitudinal stripe on segments 4 and 5, which are here curved con- 

 spicuously botl) cephalad and caudad, making the lateral ends of the 

 segments very nmch wider tlian in central dorsum. On \enter there 

 is a broad subcircular band which surrounds the latero-ventral parts 

 of base of genitalia; at the caudal end cephalad of this are two trans- 

 verse dashes of ])rown. Thorax with transverse bands on each seg- 

 ment. Head also strongly marked. Legs, antennae, and nientum 

 dusk}' and marked. Operculum and lingula brown, densely setose. 

 The eyes are red and divided, the lobes subrectangular and separated 

 by a wedge-shaped space, which in the live insects is covered with 

 white granules of wax; ocelli conspicuous. Fore- wing with two dusky 

 spots; one. a narrow ])and on the anal side at flexure, the other larger 

 at and including the apex of vein which is here curved toward the 

 anal margin; Imsal veinlet arises near the base of main vein and is 

 short; there is a long, oblique anal fold which reaches nearly to the 

 margin; hindwing with but one dusky^ patch, this at and including 

 the apex of vein. Antennte about 0.5 mm. long; segment 1, cup- 

 shaped; segment 2, pyriform; segments 3 to 7, inclusive, subc^dindri- 

 cal, closeh' ringed with minute hairs; segment 7, with finger-like 

 process and hair at tip. Mentum with apex dark l)rown, median 

 segment the shortest. Genitalia ordinary. 



Male. — Length of body, 1.7 mm.; foi'e-wing, 1.7 hy <».7 mm.; hind 

 wing, 1.6 by O.G mm.; the latero-ventral, longitudinal stripe of brow^n 

 extends from the middle of the second segment partly through the 

 seventh segment, from it toward venter the segments are outlined by 

 dark stripes. Genitalia ordinary. In other respects as in the feiuale. 



C(>ttjpe,^.—^o. 70S6, U.S.N.M. 



Collected on Ileteromeles arbutifolia by Mr. Edward Ehrhorn, at 

 Avalon, Catalina Islands, Southern California; and ])y the auther on 

 campus, Leland Stanford Junior L^niversity. The specimens were 

 found on the under side of the leaves massed in large numbers, and 

 together with the leaves were very thickh" coated with granules of 

 white wax, which readily dissolved in ah'ohol. The pupa-cases were 

 conspicuously purplish in color when in situ. From April 10 to May 

 1«), 1002, the adults were seen emerging from the pupa-cases in great 

 numbers and depositing their eggs. Many of the leaves were incrusted 

 with the immature forms and tis a consequence were bent and dry. 



