218 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 112 



Paratypes: Eight males, 1 female, collected with holotype and 

 allotype, in USNM. 



Males: Wing length, range 2.11-2.41; mean 2.22 mm. (5); leg ratio, 

 range 1.07-1.13; mean 1.11 (5); antennal ratio, range 1.8-2.0; mean 

 1.88. 



Female: Wing length, 2.29 mm.; leg ratio, 1.19. 



This species most closely resembles T. fuscicornis (Malloch) from 

 which it may be distinguished by its black knobbed halteres and 

 hairs of the anterior wing veins which are pale and of normal length. 



Subgenus Tribelos Townes, previously under the genus Tanytarsus 

 (i.e., Phaenopsectra) , is here considered to be a unit of Tendipes 

 (vide Dendy and Sublette, 1959). 



Tendipes (Dicrotendipes) californicus (Johannsen) 



Chironomus californicus Johannsen, Bull. New York State Mus., vol. 86, p. 217, 

 1905. 



Males: Wing length, range 2.04-3.6; mean 2.61 mm. (25); leg ratio, 

 range 1.39-1.75; mean 1.57 (23); antennal ratio, range 2.29-2.83; 

 mean 2.57 (19). 



Females: Wing length, range 2.52-3.81; mean 3.07 mm. (11); 

 leg ratio, range 1.5-1.77; mean 1.62 (10). 



Material examined: In Darby: 1 male, 4 females, Carmichael, 

 Dec. 8, 18, 1957, D; 4 males, 6 females, Rio Linda, Aug. 2, 6, 1957, D. 

 In UCLA: 1 female, Saratoga Springs, May 28, 1955; Huntington 

 Beach, 3 males, Feb. 21, 1950, 7 males, Apr. 6, 1949; 4 males, Resting 

 Springs, May 29, 30, 1955; 12 males, Lee's Ranch, Chatworth, Los 

 Angeles, July 25, 1950; 4 males, 1000 Islands, Madera Co., Aug. 5, 

 1952, W. A. McDonald; 1 female, Indian Wells, Riverside Co., May 9, 

 1952. In USNM: 6 males, Clear Lake, Lake Co., Oct. 11, 1947, W; 

 1 male, Wheeler's Springs, Ventura Co., June 16, 1948, W; 2 females, 

 Shafter, Kern Co., June 8, B. Brookman. In UC, Davis: 1 male, 

 Davis, June 3, 1949, R. C. Bechtel. 



This species was highly variable as to size and ratios and, at first 

 glance, was made of several populations that approached subspecific 

 level. However, a plot of measurements indicated sufficient overlap 

 so as to show lack of population isolation necessary for subspecific 

 identity. 



Previous California records: Pasadena, Johannsen, 1905, p. 217; 

 Los Angeles, Townes, 1945, p. 105. 



Tendipes (Dicrotendipes) modestus (Say) 



Chironomus modestus Say, Journ. Acad. Nat. Sci. Philadelphia, vol. 3, p. 13, 1823. 



Male: Wing length 2.29 mm.; leg ratio 1.57; antennal ratio 2.27. 

 Material examined: In Darby: One male, Rio Linda, July 21, 

 1957, D. 



