106 CLASSIFICATION OF THE ALEYRODID^. 



Genus ALEUROTITHIUS n. gen. 

 (PI. XLIII, figs. 1-lti, PI; XLVIII.) 



Pupa case of medium size, elbptic in outline, yellowish to darker 

 in color; margin toothed, the wax tubes but little developed; sub- 

 marginal area separated from dorsal disk by an irregular row of small 

 papilla) and marked by many suture-like lines; dorsal disk covered 

 with patches of large mammiform pai)illaD; tracheal folds not dis- 

 cernible, wax secretion copious, of wool-hkc threads from the dorsal 

 papillae. Vasiform orifice broadly subcordate, the operculum about 

 half filUng it; caudal extremity of lingula exposed, lobed, and bear- 

 ing a pair of spines. 



Adult with one flexure in radial sector of forewdng and no trace of 

 media; antennas of seven segments, of wliich the third is the longest, 

 the four distal segments subequal. Ovipositor and labium extremely 

 long. 



Type, timberlakei Quaintance and Baker. 



Species of the Genus Aleurotithius. 

 Aleurotithius timberlakei n. sp. 

 (PI. XLIII, figs. 1-16; PL XLVIII.) 



This species is represented in the collection by three lots of material. 

 The first, Quaintance No. 8732, was collected by Mr. P. II. Timber- 

 lake, July 14, 1912, in the upper Sonoran Zonc,San Jacinto Mountains, 

 CaUfornia. The second, Quaintance No. 8818, was forwarded by 

 H. S. Smith and represents specimens collected by Mr. R. K. Bishop 

 at Santa Ana, Cal. The third lot was sent by Mr. Bishop from 

 Santa Ana, May, 1913. All specimens were collected on Eriodiclyon 

 tomentosum, commonly known as Yerha santa. 



Pupa case (PI. XLIII, fig. 1 ) . — Size 1 .008 by 0.72 mm. ; shape elliptic ; 

 color pale yellowish. Submarginal area separated from dorsal disk by :., 

 series of small more or less conical papilla; (PI. XLIII, fig. 4). Margin, 

 with the wax tubes as irregular teeth (PI. XLIII, fig. 2) from which 

 suturc-hke markings extend mesad across the submarginal area* 

 Dorsum with the segments distinctly marked and possessing large 

 numbers of prominent mamrniform papiUte (PI. XLIII, fig. 3). These 

 are situated in groups on the subdorsal portions of the segments. 

 Vasiform orifice (PI. XLIII, fig. 5) broadly subcordate, with the 

 anterior margin straight. Operculum similar in shape to the orifice 

 and filling about one-third of it; distal extremity of the lingula 

 exposed, and setose. 



As seen on the leaf, there is a pronfinent rim of waxy secretion wluch 

 elevates the case extremely fi-om the leaf and there is an abundant 

 dorsal secretion composed of more or less fused waxen rods from the 

 mammiform papilla. 



