N0.18G2. ALE YRODIDS OF CALIFORNIA— BEMIS. 531 



silly more ^-ellow; from the lirst there can l)e seen a large, roundish, 

 vellow body within the ><hell. This is at Hrst pale in color, but also 

 o-rows darker until near time of liatehino-. when it is orange. The 

 pedicel is at center of l)ase of shell and is dixidcd atdistal end into two 

 or more prongs. The shell is densely covei'ed with the wax granules, 

 which are found upon the leaf. 



Adult female. — Length of body, 1.5 mm.; fore wing, 1.0 by U.83 

 nun.: hhid wing. 1.08 by 0.68 mm.: hind femur, 0.83 mm.; hind 

 til)ia, 0.53 mm.; hind tarsus, 0.8 nun.; })roxinial segment, 0.18 mm. 

 Antennie: Segment 1, cup-shaped, about one-half the length of seg- 

 ment '1\ segment 2, subpyriform, one-half as long as third segment; 

 segment 3, 0.166 mm. long; segments 1, 6, and 7 equal 0,066 mm.; 

 segment 5, slightly longer than segment 1; segments 8 to T, inclusive, 

 closely ringed with miiuite hairs. Fore wings with two dusky spots, 

 one at the flexure of main vein, which is here curved toward the anal 

 margin; hind wings with only the more distal spot. Basal veinlet of 

 fore wings arises independently of main vein and at some distance 

 from base of wing; between the veinlet and anal margin there is a 

 heavv oblique fold, which is about one -half the length of wing and 

 which curves nearly to the anal margin; main veins of })oth wings 

 about seven-eighths length of wing; mentum dusky brown, the apex 

 dark brown, median segment ])rown; ocelli conspicuously large; CA'es 

 red-black, divided; vasiform orifice subcircular; operculum brown, 

 \'ery convex dorsally, and about one-half length of orifice; lingula 

 brown, very long, subcylindrical, with distal part somewhat enlarged 

 and l)ilobed, densely covered with minute hairs; genitalia acute, con- 

 ical, ordinary-. 



2fale. — Length of bod}-, 1.5 mm.: fore wing, 1.63 by 0.7 mm.: hind 

 femur, 0.3 mm.; hind tibiu, 0.15 mm.; hind tarsus, 0.26 mm.; proxi- 

 mal segment, 0.17 nuu. Antenna?: Segment 2, 0.07 mm.; segment 3, 

 0.186 mm. ; segments 1, 5, and 7 equal, 0.07 mm. ; segment 6, 0.01 mm. 

 (lenitalia usual. Brow^n line on venter of abdomen, 0.3 mm. long. 



For detail of body coloration, etc., see drawing of adults of ^1. i>rn- 

 hio.^uH^ which agrees closely with the markings of this species. 



This species is very plentiful in all parts of California where the 

 author has collected or from which specimens have l)een received. 

 There are some minor variations in external characters, but these do 

 not differ more from Quaintance's species than they do from one 

 another. It is onmivorous, the number of host i)lants being greater 

 than that of any other Aleyrodes known to the author. The exact 

 number of broods has not been ascertained, but females were seen 

 laying on February 22, I'JOl, again during May, October, anil Novem- 

 ber of the same year on the campus of Leland Stanford Junior l^niver- 

 sity; in 1902 the spring was cold and wet, and the first i^gg laying 

 observed in the same locality was on March 2l>; the females are still 



