60 BULLETIN 190, UNITED STATES NATIONAL MUSEUM 



GARMENT A GILIAE form VITRINA (Neumoegen) 



Albuna vitrina Neumoegen, Ent. News, vol. 2, p. 109, 1891. 



Aegeria deceptiva Beutenmijller, Bull. Amer. Mus. Nat. Hist., vol. 6, p. 93, 1894. 

 Synanthedon giliae McDunnough, Check list of the Lepidoptera of Canada and 

 the United States of America, pt. 2, No. 8695, 1939. 



Male. — Antennae black. Labial palpus rough, yellow, heavily mixed 

 with black on first and second joints, third joint black. Head black, buff 

 or pale yellow between the eyes. Collar with long hair, which is mixed 

 with black, although mostly pale yellow. Thorax lustrous blue-black, on 

 fresh specimens densely clothed with yellowish hair above and beneath. 

 Abdomen shiny black, segments 2, 4, 6, and 7 always with encircling yel- 

 low bands ; segments 3 and 5 with traces of bands on some specimens ; anal 

 tuft narrowly fan-shaped, pale yellow in middle above and beneath and 

 broadly edged with black at the sides. Legs hairy in a mixture of black 

 and yellow; posterior tibiae mostly black between the spurs; tarsi black, 

 dusted with yellow. Forewing transparent, costa and outer margin black 

 with a slight mixture of orange scales, which are most pronounced between 

 the veins at the margin ; inner margin shaded with yellow toward wing 

 base ; discal mark black, spotted with red ; underside pale yellow, discal 

 mark red and black. Hindwings transparent, narrowly margined with 

 metallic black ; fringes broad, rusty black. 



Female. — Similar to male. Outer margin of forewing with lustrous 

 brownish scales between the veins and discal mark black and red or red 

 edged with black inwardly; abdomen with seginents 2, 4, and 6 broadly 

 banded with yellow ; sometimes a faint indication of yellow bands on seg- 

 ments 1, 3, and 5 ; beneath, the bands broadening or uniting; the short anal 

 tuft bluntly pointed, black and yellow mixed, mostly black in the middle. 

 Posterior tibiae more evenly mixed with black and yellow than in the male. 



Expanse : Male 20 to 24 mm., female 24 to 28 mm. 



Distribution. — Rocky Mountains, Arizona to Alberta, Canada. 



Type. — Male. Collected at Fort Calgary, Alberta. In the United 

 States National Museum. 



Remarks. — For this form, prevailing in Rocky Mountain regions at alti- 

 tudes from 8,000 to 10,000 feet (less in the northern limits of its range), 

 the name vitrina Neumoegen, considered by Beutenmuller a synonym of 

 giliae, has been resurrected. From typical giliae this form differs strikingly 

 in its darker coloration, in the fewer abdominal bands, and in the average 

 smaller size. The eft'ect of higher altitudes is registered by greater 

 hairiness. 



United States National Museum records : Four males, Paradise Creek, 

 White Mountains, Ariz., 9,000 feet, July 15, 1932 (A. Duncan) ; three 

 males, two females. Little Tesugue Canyon, Santa Fe, N. Mex., 9,200 feet, 

 July 27-August 10, 1932 (A. B. Klotz) ; one male, Beulah, N. Mex., July 

 21 (Cockerell) ; three males, one female, San Juan Mountains, San Miguel 

 County, Colo.. 10,000 feet, July 1937 (Engelhardt) ; one female. Rock 



