200 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 112 



Paratendipes fuscitibia, new species 



Figure \,a 



Holotype male: USNM 64709, Whitewater Canyon, Riverside Co., 

 April 7, 1949, W. 



Head dark brown; mouth parts and antennae infuscate. Thorax 

 dark brown, shining; vittae blackish brown, not strongly contracting; 

 scutellum somewhat lighter brown; halteres white. Fork of Cu distal 

 to r-m; R 4+5 terminates proximal to the point of termination of M. 

 Squama well fringed. Femora, except bases, which are stramineous, 

 and tibiae mostly concolorous brown. Basal two-thirds of proximal 

 tarsal joint white; apical one-third brown, strongly contrasting; 

 remaining tarsal joints brown. 



Wing length 2.59 mm.; leg ratio 0.94; antennal ratio 1.53 (slide). 



Abdomen blackish-brown, incisures somewhat lighter. 



Genitalia scarcely distinguishable from P. albimanus (Meigen). 



Paratype : One male collected with type (USNM) . 



Wing length 2.59 mm.; fore tarsi missing; antennal ratio 1.59. 



Female: Unknown. 



This species may be distinguished from the closely related P. 

 albimanus (Meigen) by the darkened tibiae, the slightly larger size, 

 and the smaller leg ratio. 



Paratendipes albimanus (Meigen) 



Chironomus albimanus Meigen, S3^stematische Beschreibung der Europaischen 

 zweifliigeligen Insekten, vol. 1, p. 40, 1818. 



Males: Wing length, range 1.74-2.07; mean 1.94 mm. (6) ; leg ratio, 

 range 1.24-1.35; mean 1.3 (3); antennal ratio, range 1.44-1.51; mean 

 1.49 (4). 



Material examined: In USNM: 2 males, Springville, Aug. 10, 

 1947, W; 3 males, 6 miles east of Orosi, July 8, 1947, W; 1 male, 

 Visalia, July 4, 1947, W. 



Previous California records : Clio, Plumas Co., Lake Tahoe, Townes, 

 1945, p. 29. 



Paratendipes subaequalis (Malloch) 



Chironomus subaequalis Malloch, Bull. Illinois State Lab. Nat. Hist., vol. 10, p. 

 440, 1915. 



Thorax dark brown instead of black as described (Malloch, 1915; 

 Townes, 1945). However, the distinctive superior appendage of the 

 male genitalia is diagnostic. 



Males: Wing length, range 1.48-1.52; mean 1.49 mm. (4); leg 

 ratio 1.33, 1.2 (2); antennal ratio 0.81 (1). 



Material examined: In UCLA: 5 males, 1000 Palm Canyon, River- 

 side Co., Mar. 20, 1954, B. 



