REVISION OF STREPSIPTERA— PIEECE. 99 



10. STYLOPS CALIFORNICA, new species. 



Host. — Andrena subtilis Smith; Southern California. Described 

 from two females and their triungulinids from one bee in the collec- 

 tion of the University of Nebraska. 



Female. — Length of cephalothorax 0.89 mm., breadth at spiracles 

 0.96 mm., breadth at base of head 0.61 mm., distance between mandi- 

 bles at base 0.14 mm. Cephalothorax light brownish, with narrow 

 darker transverse band at base; slightly broader than long, broadly 

 rounded truncated at apex; truncation about two-ninths the breadth 

 at spiracles. Mandibles veiy broadly rounded, armed at apex with 

 outwardly curved acute tooth. Mouth large, round. Spiracles lat- 

 erally prominent. 



Type.-— Cat. No. 10085, U.S.N.M. 



Triungulinid: Length of body 0.15-0.18 mm., length including 

 stylets 0.21-0.23 mm., breadth of head 0.04 mm., greatest breadth 

 0.06 mm., breadth of ninth abdominal segment 0.02 mm. Color, 

 yellow to brown. The head is transverse, subreniform, with the red- 

 dish brown eye patches occupying a considerable space at each side. 

 The antennas are very minute, only visible under the highest powers. 

 The mouth parts are very indistinct. The legs consist of coxa, femur, 

 tibia, and tarsus. The femur is short and armed with a long spine; 

 the tibia is twice the length of the femur; the acute, transparent, 

 one-jointed tarsus is about equal to the tibia. The abdominal seg- 

 ments are freely bordered with transparent spines of two sizes, alter- 

 nating regularly. The tenth abdominal segment is cloven into two 

 tubercles each bearing a single stylet, which is almost equal to half 

 the length of the body. 



ii. STYLOPS CLAYTONIiE, new species. 



Host. — Andrena (Trachandrena) claytonise Robertson (det. H. L. 

 Viereck) ; Thomasville, Georgia, March 21, 1904; M. Hebard, col- 

 lector (pi. 3, fig. 3). 



Female. — Length of cephalothorax 0.84 mm., breadth at spiracles 

 0.81 mm., breadth at base of head 0.47 mm., distance between mandi- 

 bles at base 0.13 mm. Cephalothorax light yellowish brown with 

 dark brown transverse band at base; as long as broad, wedge shaped, 

 narrowly rounded truncate at apex, apical margin shallowly emar- 

 ginate, truncation less than one-third breadth at spiracles. Lateral 

 margin slightly constricted at base of mandibles and at base of head. 

 Mandibles oblique, broad, with outwardly curved tooth at apex and 

 blunt tooth about middle of outer edge. Mouth elliptical. Spira- 

 cles only slightly prominent. 



Type r ^-C&t. No. 10086, U.S.N.M. 



