NO. 2136. REVISION OF THE GENUS APHYCUS—TIMBERLAKE. 607 



most of the club lemon yellow. Legs concolorous with the under- 

 parts, the tarsi more browiiish yellow with the tip of the last joint 

 blackish; middle tibiae with two brond, interrupted, blackish brown 

 annuli, hind tibiae with annuli wider but paler, and on the front 

 pair the annuli are reduced to dusky markings. Wings hyaline, 

 the veins pale yellowish brown. 



Females vary in the intensity of the tibial markings, the extent 

 of the iiifuscation on the venter, and in some the yellow streak on 

 the sides of the dorsum of abdomen is wider and extends anteriorly 

 even to the base of abdomen. 



Male. — Front and vertex about one-half longer again than wide, 

 ocelli in an equilateral triangle. Antennae as in the female, but 

 the scape is much narrower and the club is barely wider than the 

 last funicle joint. Length: 0.8 to 1.0 mm. 



Coloration similar to the female, but the black on abdomen is 

 often more intense and the yellow on the sides is reduced and some- 

 times obsolete; venter may lack the dusky markings, and the meso- 

 notum is sometimes tinted with brownish, especially on the middle 

 of the scutum and on the scutellum. 



Described from fourteen females, four males (type, allotype, and 

 paratypes a to p) reared from Pliysokerm.es insignicola (Craw), Santa 

 Maria, California, April 22-26, 1911, 1912, and November 28 to De- 

 cember 11, 1911 (R. C. Wyhe). Many additional specimens in 

 the author's collection reared with the above may be considered 

 metatypes. 



Type.—Q^i. No. 18369, U.S.N.M. 



13. APHYCUS COQUILLETTI Howard. 

 Fig. 12. 



Aphycus coquilletti Howard, Proc. U.S.Nat.Mus., vol. 21, 1898, pp. 241, 244. 



Female. — Front and vertex tmce as long as wide; ocelli in an 

 acute-angled triangle, the posterior pair about one-fourth their own 

 diameter from the eye margin; antennal scrobes rather deep and 

 narrow and the facial prominence larger and more elevated than 

 usually; eyes not pubescent. Antennal scape about one-third as 

 wide as long, widest across the middle, the lower margin evenly 

 rounded; pedicel a little longer than the first three funicle joints 

 combined; first four funicle joints equal in length, the first two 

 hardly wider than long, last two joints noticeably longer and wider 

 than the preceding, wider than long, the sixth nearly twice as wide 

 as the first joint; club oval, more rounded at apex than at base, 

 about one- third wider than the preceding joint and as long as the 

 last five funicle joints combined. Wings narrow, uniformly ciliated; 



