CLEAR-WING MOTHS OF FAMILY AEGERITDAE 159 



Gaea Beutenmuixer, Bull. Amer. Mus. Nat. Hist., vol. 8, p. 115, 1896; Mem. Amer. 

 Mus. Nat. Hist., vol. 1, pt. 6, p. 236, fig. 9, 1901. 



Pterogostic and genitalic characters as in Paranthrene. Hindwing sub- 

 triangular, inner margin very long and oblique. Labial palpus more por- 

 rect, with a long, stiff brush. Tongue aborted, nonfunctional. Anal tuft 

 short, spatulate. Harpe rounded at apex. 



KEY TO NORTH AMERICAN SPECIES OF GAEA 



Wings light brown and yellow solituda (Hy. Edwards) 



Wings brown-black, streaked with orange and red emphytiformis (Walker) 



GAfiA SOLITUDA (Hy. Edwards) 



Plate 2, Figure 19; Plate 10, Figures 50, 50a; Plate 16, Figure 81 



Larunda solituda Hy. Edwards, Papilio, vol. 1, p. 182, 1881. — Beutenmuller, Bull. 



Amer. Mus. Nat. Hist., vol. 4. p. 171, 1892. 

 Gaea solituda Beutenmijller, Bull. Amer. Mus. Nat. Hist., vol. 8, pt. 115, 1896; 



Mem. Amer. Mus. Nat. Hist., vol. 1, pt. 6, p. 238, pi. 29, fig. 6 (male), 1901. 



— McDuNNOUGH, Check Hst of the Lepidoptera of Canada and the United States 



of America, pt. 2, No. 8772, 1939. 



Male. — Antennae reddish brown shaded with black scales, bipectina- 

 tions long, somewhat appressed. Labial palpus with a long, stiff brush, 

 orange and yellow mixed with black at the sides on basal and middle joint ; 

 third joint bare, yellow. Head with vertex black; face pale yellow; oc- 

 cipital fringe rough, yellow. Collar bluish black and reddish brown above, 

 yellow beneath. Thorax brown-black, hairy ; tegulae chestnut-red on 

 anterior half and yellow on posterior half ; shoulders chestnut-red and 

 yellow at wing bases, above and beneath ; metathorax broadly marked with 

 yellow transversely. Abdomen with all segments banded with yellow, the 

 bands touched with chestnut-red on upper edge and narrowly ringed with 

 blue-black on lower edge ; beneath the shading with chestnut-red more 

 noticeable, except on segment 3, which is entirely yellow above and be- 

 neath; anal tuft short, compressed at the sides, black, red, and yellow 

 mixed. Legs yellow; tibiae rough, chestnut-red on posterior half. Fore- 

 wing opaque, brown, yellow, and red ; costa, cubitus, and outer veins 

 sordid black ; between costa and outer veins sordid black ; between costa 

 and cubitus and inner margin to the red discal mark, pale yellow ; pale 

 yellow rays between the veins from discal mark to almost the outer red- 

 dish-brown margin ; fringes broad, brown-black ; underside with a heavy 

 shading of yellow and orange, discal mark red. Hindwing transparent 

 basally to discal mark from costa to vein Ic ; beyond the discal mark to the 

 outer margin a heavy suffusion of reddish brown between black veins, the 

 inner margin broadly shaded with red basally ; fringes brown black ; 

 underside yellow and orange, streaked with black veins. 



Female. — Antennae simple, orange-red. Labial palpi orange. Head 

 with a deep yellow brush on vertex, face shiny white. Thorax and ab- 



