ZEXILLIA AXD ALLIED GENERA SELLERS 29 



19. ZENILLIA DAVVSONI, new species 



Zenillia margmata Axdeich and Webbek (partim), Proe. U. S. Nat. Mus., vol. 63, 

 art. 17, p. 17, 1924. 



Male (type). — Head with front at narrowest 0.27 head width; 

 frontal row of seven bristles on one side and six on the other, extending 

 from on a level with base of third antemial segment to the two recli- 

 nate preverticals ; no outer vertical bristle ; facial ridge bristly on low- 

 est one-fifth ; gena one-sixth eye height, grayish pruinose with a yellow 

 tinge ; frontal orbit and face dull brown, golden-pollinose, face slightly 

 less so; antenna black, third segment five times length of second; 

 arista thickened on basal one-third, penultimate segment short; pal- 

 pus yellow. 



Thorax black, dull golden-pollinose, marked with four mesonotal 

 vittae ; scutellum black, heavily covered with golden pollen ; three pairs 

 of marginal scutellars and one shorter apical pair erect or proclinate, 

 one pair of discal scutellars; legs reddish brown; midtibia with one 

 median anterolateral bristle, inner ventral bristle lacking; hind tibia 

 filiate. 



Abdomen black covered with dull-brownish-gold pollen; first seg- 

 ment shining black, narrow apical margins of segments 2 and 3 shining 

 black, not distinct, tending to blend with pollen; first and second 

 segments with a pair and third and fourth with a row of marginal 

 macrochaetae ; second and third segments with a pair and fourth with 

 a row of discal macrochaetae. 



Length 8.5 mm. 



Female (allotype). — Front at narrowest 0.28 head width; four 

 frontal bristles; with outer vertical bristle; third segment of antenna 

 four times the second. Midtibia with inner ventral bristle. Otherwise 

 the description is much the same as for the male. 



There is one female paratype. It has five frontal bristles. 



Type and allotype locality. — Dawson Camp, Ariz. 



Distribution. — Arizona 1 ; New Mexico 2; Georgia 1. 



Type.— Male, U.S.N.M. No. 54139. 



Hosts. — Ellopia lactea (Hulst) 1; under Carpocapsa pomonell-a 

 (Linnaeus) band 1. 



Remarks. — The material examined consisted of the type and allotype 

 collected at Dawson Camp on September 7, 1917 (Townsend) ; one 

 female paratype collected September 12, 1916, at Hell Canyon, N. Mex., 

 elevation 7,200 feet (Townsend) ; one female is from Cornelia, Ga., 

 under codling-moth band, August 30, 1921 (Van Leeuwen), the abdo- 

 men a little less golden ; one female reared from E. lactea September 

 15, 1923, Lincoln National Forest, N. Mex. (Eldridge). 



