176 BULLETIN 190, UNITED STATES NATIONAL MUSEUM 



Nat. Hist, vol. 6, p. 366, 1894; vol. 8, p. 118, 1896; vol. 9, p. 218, 1897; vol. 12, 



p. 159, 1899. 

 Melittia? flavitibia Walker, List of the specimens of lepidopterous insects in the 



collection of the British Museum, pt. 8, p. 67, 1856. 

 Aegeria tibialis Beutenmuller, Mem. Amer. Mus. Nat. Hist., vol. 1, pt. 6, p. 259, 



pi. 29, fig. 11 (male), fig. 12 (female), pi. Z2>, fig. 13 (female, variety), 1901.— 



McDuNNOUGH, Check list of the Lepidoptera of Canada and the United States 



of America, pt. 2, No. 8690, 1939. 



Male (description based on an example from Monterey, Mass., 

 selected as agreeing with the type from New Hampshire in the Boston 

 Society of Natural History). — Antennae black, bipectinations strong, 

 dark ferruginous. Labial palpus yellow, black at base and mixed with 

 black at the sides. Head black on top and face ; orbits yellow ; occipital 

 fringe black above, yellow at the sides. Collar black, touched with yellow 

 at the sides. Thorax brownish black ; a thin yellow line along inner 

 side of tegula and a broader yellow, lateral line on prothorax, joining 

 a yellow spot at inner wing base and anteriorly meeting the thin line 

 on tegula in an acute angle ; a yellow spot at wing base above ; metathorax 

 tufted with black, and with two separate yellow patches laterally. Ab- 

 domen with segments 1 and 2 brown-black ; segment 3 yellow, narrowly 

 edged with brown-black posteriorly; segment 4 brown-black sprinkled 

 with yellow; segments 5, 6, and 7 yellow, with the narrow posterior 

 margins brown-black and pale yellow and a row of brown-black spots 

 at the sides ; beneath same as above ; anal tuft very short, blunt, brownish 

 yellow. Legs yellow, shaded with brown. Forewing transparent with 

 costa, veins, discal mark and margins orange-brown, darker on costa, 

 wing base and fringes ; same beneath. Hind wing transparent, very nar- 

 row margins and veins orange-brown. 



Female. — Larger and more robust, marked more contrastingly on 

 thorax and abdomen, yellow and black ; old or faded specimens usually 

 rusty brown or sordid yellow. 



Original description by Harris: "Brownish; wings transparent; first 

 pair with a narrow border and an abbreviated band beyond the middle 

 pale brown ; hind wings with a narrow brownish fringe ; antennae black ; 

 orbits, two lines on the thorax, edges of the abdominal seginents, and 

 tibiae yellow ; hindmost tibiae thickly covered with yellow hairs. Expands 

 one inch and a half. 



"Found in New Hampshire (Dublin) on the Poptdus candicans, and 

 presented to me by the Rev. L. W. Leonard." 



A female, Michigan, July 24, 1931, in the United States National 

 Museum collection, matches this description. 



Expanse: Male 30 to 32 mm., female 34 to 38 mm. 



Distribution. — New York to Nova Scotia ; Midwestern States ; British 

 Columbia; Pacific coast and intermountain regions from Washington 

 to California; Rocky Mountain States. 



