SCENOPINIDAE OF THE WORLD 275 



184. Belosta albipilosa D. E. Hardy 



Figure 178 

 Belosta albipilosa D. E. Hardy, 1944a, p. 38. 



This species, an active predator of wood boring insects, is adequately 

 described by Hardy. Sclerotized portion of female accessory gland 

 seven times as long as wide. 



Length: Male body 4-5.5 mm., wing 3-3.8 mm.; female body 

 5-6 mm., wing 3.5-4 mm. 



Type-locality: Riggins, Idaho; 18 May 1940 (T. Terrell) taken on 

 Finns ponder osa. 



Type: 9 (USNM). 



I have seen all of the type-series in the (USNM), as well as material 

 from the following localities: 1 9, Wawona, California, on Thuja; 1 cf , 

 Whitaker Forest, Sequoia Nat. Forest, California, 21 October 1940 

 (D. DeLeon) on Quercus kelloggi; 1 9, Stanislaus Nat. Forest, Califor- 

 nia, 27 May 1935 (W. H. Lange) on Pinus ponderosa; 1 9, Sierra Nat. 

 Forest, California (J. W. Bonberg) on Pinus ponderosa; 2 cfcf, 

 Bandelier, New Mexico, 1957; 1 9, Krassel, Idaho, 18 September 1957 

 (M. M. Furniss) on Pseudotsuga menziesii; all in (USNM); 1 cf, 

 Junipero Sierra Pk., Santa Lucia Mts., Monterey Co., California, 3 

 July 1957 (H. B. Leech) on peak ca. 5800 ft. emerged from dead 

 branches Pinus coulteri in (CAS); 4 6^ cf, 19, Krassel, Idaho, emerged 

 January and 16 and 27 June 1960 (M. M. Furniss) ex Pseudotsuga 

 menziesii where they were found to be predaceous on the larvae of 

 Dendroctonus pseudotsugae, Hopk., U.S. Forest Serv. Res. Lab., 

 Boise, Idaho. 



185. Belosta pilosa (Coquillett) 



Figure 179 



Pseudatrichia pilosa Coquillett, 1902, p. 102. 



Psexidatrichia flaviceps Coquillett, 1902, p. 102. New synonymy. 



After a good deal of study on the paratypes of these two species as 

 well as considering where and when captured, I have concluded that 

 B. flaviceps is the female of B. pilosa. The wing venation corresponds 

 as closely as in most si^ecies; the presence of short but rather dense 

 pile on the female, the comparable size, etc., make it seem improbable 

 for them to be separate species. I did not observe the black hairs on 

 the male mentioned by Coquillett in liis description. A beautiful male 

 was received, from Dr. Timberlake, which had the entire thorax and 

 much of the abdomen covered with long white hairs, giving it a truly 

 snowy appearance. Accessory gland of female has a flaring base, 

 sclerotized portion only as long as broad. 



Length: Male body 4-5.5 mm., wing 3.6-4.5 mm.; female body 

 6 mm., wing 4.6 mm. 



