100 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 115 



Pentaneura (Pentaneura) pilosella (Loew) 



Figure 2g 

 Tanypus pilosellus Loew, Berlin Ent. Zeitschr., vol. 10, p. 5, 1866. 



The description that follows is given to supplement the original 

 description and the one given by Johannsen (1946). It is based on a 

 male specimen in UCLA: Lee's Lake, Chatsworth, Los Angeles Co., 

 July 25, 1950, B. 



Head yellowish-white except antennal pedicels reddish-brown and 

 palpi and antennal flagella infuscate. Postocular bristles in single 

 row; reaching point medial to dorsal extension of eyes. Eye exten- 

 sion angulate posteriorly, rounded anteriorly. About 15 clypeal 

 bristles. Antennal ratio 1.30. 



Thorax yellowish-white except for vittae, postnotum, and sterno- 

 pleuron which are reddish-brown. Meso thoracic vittae with greenish 

 pruinosity. Halteres yellowish-white. Supra-alar bristles 2, prealar 

 bristles 8; dorsomedial bristles in 2 rows, diverging posteriorly; 

 dorsolateral bristles in 2 staggered rows, composed of large and small 

 bristles, rows diverge posteriorly to join dorsomedial bristles; scutellum 

 with 8 large bristles in transverse posterior row, anteriorly with many 

 fine strewn bristles; anterolateral bristles about 8. 



Legs infuscate stramineous; beard 3.6 times fore tarsal diameter. 



Leg proportions: 



F Ti Tai T02 Tas Tat Tat Leg Ratio 



Fore 25 30 19 12 8 5 4 0.63 



Middle 32 27 33 15 4 5 5 1.22 



Hind 29 38 30 14 11 6 4 0.79 



Wing with ratio of arculus to m-cu:m-cu to wing tip 0.37. Ri 

 terminates proximal to Cuj; wing densely haired. Wing length 1.55 

 mm.; venarum ratio 0.75. 



Abdomen with segments I, II, and IV yellowish-white with narrow 

 basal brown band; segments III, V, and VI largely brown, with nar- 

 row apical white fascia; segments VII and VIII mounted with 

 genitalia. 



Males: Wing length, range 1.04-1.52; mean 1.26 mm. (7); fore leg 

 ratio, range 0.56-0.72; mean 0.66 (5); antennal ratio, range 0.64- 

 1.26; mean 0.91 (7); middle leg ratio, range 1.10-1.28; mean 1.18 

 (5); hind leg ratio, range 0.82-1.09; mean 0.89 (4). 



Material studied: In USNM: 4 males, Orosi, Tulare Co., June 5, 

 1947, W. In UCLA: 9 males, Lee's Lake, Chatsworth, Los Angeles 

 Co., July 25, 1950, B; 7 males, same locahty, Aug. 10, 1950. 



Pentaneura {Pentaneura) smithae, new species 



Figure 2h 

 Holotype male: USNM 65511, Saratoga Springs, March 20, 1955, B. 

 Head yellowish, occiput and mouthparts infuscate ; antennal pedicel, 

 thoracic vittae, postnotum, and sternopleuron reddish-brown. Post- 



