494 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 103 



distally from inner surface; two halves of tenth sternite almost strip- 

 like for a little more than half of width, then turning internally and 

 broadening considerably ventrally, covered with coarse toothlike 

 papillae-bearing setae; parameres with blunt flap projecting antero- 

 dorsally from median plate, posterior hooks bipartite, v/ith smaller 

 process medially, inner arms curved slightly anteromedially. 



Female genitalia (fig. 21,e) : Eighth tergite narrowing considerably 

 just before ventral margin, darkest brown ventrally, lighter around 

 spu'acle, anterior and posterior margins irregular; ninth tergite with 

 each lateroventral half large, moderately elongate, anterior margin 

 about two-thirds of length, irregular, dorsal margin slightly concave, 

 ventral margin rounded. 



Holotype: a male from Clear Lake, Lake County, Calif., May 19, 

 1949, elevation 1,318 feet (H. P. Chandler); CAS. 



Allotype: A female with same data; CAS. 



Paeatypes: 27 mounted specimens (16 males, 11 females) plus 

 several in alcohol; CAS, USNM, MCZ, California Insect Survey, and 

 Harley P, Brown collections. 



The paratypes in the USNM differ in the number of branches of 

 Cul in the forewing (three or four), and in the hindwing (two or three). 

 One paratype has 3d r and 2d m missing in the forewing, and r-m 

 basad instead of distad of s in the hindwing. 



This species has also been taken in Oregon (Deschutes Piver, near 

 Redmond, July 28, 1939, Schuh and Gray; Triangle Lake, Lane I 

 Count}^, June 16, 1952, B. Malkin). Carpenter's (1942, p. 50) 

 record of areolaris from the Deschutes River, near ''Richmond," 

 Oreg., applies to calif ornica. The differences noted in the paratypes 

 were also noted in the specimens from Oregon. Those from near 

 Redmond tended to show the vertex and thorax a lighter brown in 

 color. 



This species resembles areolaris, striata, and tenebra most closely. 

 The forewing of calijornica is similar to tenebra, but differs from areo- 

 laris and striata in the closeness of 2d r to 3d r, which is basad of the 

 point of coalescence of Sc and Rl. The forewing of areolaris differs] 

 from all three species in the longer sinuous 3d m between MA and 

 MPl+2 (usually in vicinity of angular first fork of MPl-1-2); the] 

 longer pale area in the pterostigma; and the usually greater number] 

 of branches to Cul (may reach seven). The hindwing of areolaris. 

 differs in the longer pale portion of the pterostigma, the absence of 

 a definite radiomedial streak, and usually greater number of branches] 

 to Cul. Although the female genitalia of calijornica and tenebra are 

 somewhat alike, the halves of the ninth tergite of calijornica are slightly 

 shorter in comparison with the width, and the anterior margins differ; ■■ 

 the eighth tergite is broader in tenebra. The genitalia of areolaris andj 

 californica are distinct. 



