Noi^^G^- ALEYRODIDS OF CALIFORNIA— BEMIS. 479 



Genus ALEYRODES Latreille. 



" With the cluiructers of the famil\'. Adults, with but u single 

 basal l)rancli to vein of forewings; hindwino-s. with but a single 

 vein." 



The author has not attempted to separate the genus into subgenera 

 as proposed by Cockerell;" this work can be done more satisfactorily 

 when students have become better acquainted with more species. 



TABLE OF ALL AMERICAN SPECIES.'' 



I. Pupa-case usually Init little hidden by secretion; with lateral fringe— that is, 

 any secretion from marginal wax tubes. 

 II. Pupa-case usually hidden by a mass of liairy, waxy, or Hocculent secretion. 

 III. Pupa-case evident and without lateral fringe. 



I. Pupa-case usually but little hidden by secretion; with lateral fringe— that is, 

 any secretion from marginal wax tubes. 

 Pupa-case uniformly brown or black. 



With dorsal secretion of wax. Dorsal secretion t-ottony or mealy in 

 appearance. 



Pupa-case dark brown to black, elliptical, slightly convex, about 

 0.85 mm. long. Dorsum covered with white meal, frequently 

 becoming quite solid. Lateral fringe, all around, agglomer- 

 ated almost into a solid plate, of unecjual length, giving a 

 star shape of about 8 rays. Operculum sulicircular, covering 

 about one-half of orifice; lingula obsolete Mellatas (37). 



Pupa-case black, elliptical, convex, L8 mm. long. Margin thick 

 with conspicuous groove on dorsal surface, and short fringe of 

 wax on ventral surface. Around vasiform orifice, a large, 

 nearly transparent, hemispherical area, but dusted with white 

 secretion. Around lateral margin, a row of about 32 sharp 

 sword-like hairs. Adult with basal half and portions of rest 

 of wing smoky .fam ipennis ( 18) . 



Pupa-case shiny black; size, about 0.92 by 0.()1 mm.; subellip- 

 tical, moderately convex; lateral fringe rather short, trun- 

 cate; dorsal secretion of 3 longitudinal stripes of cottony or 

 mealy wax acacUc (47). 



Pupa-case shining black, elliptical, 0.9 by 0.7 mm. Lateral 

 fringe of transparent rods as wide as the case; dorsal secretion 

 a narrow elliptical band mesad of the lateral wax tubes, and 

 also a longitudiiml stripe of mealy white wax..m«<7ro«/ (25). 



Pupa-case shiny iTaik, oval, convex, 0.9 by 0.6 mm. Lateral 

 wax tubes detiexed to form the marginal rim, which is sharply 

 demarked from dorsum by a ridge. Lateral fringe copious, 

 at least as wide as case; dorsal secretion forming a second 

 fringe, which rises perpendicularly above tlie dorsum and 

 then curves downward and outward splendens (2). 



«Proe. Acad. Nat. Sci. Phila., 1902, p. 282. 



^.1. j)]ial;vnoides (No. 30) is not included in this table, as it was not included in 

 Quaintance's key, and the writer has not had access to the original descrrjition. In 

 Quaintance's list it is not described, simply listed with a reference to the original 

 description. 



