304 BEUTENMULLER, MONOGRAPH OF THE SESIIDiE. 



Sesia tacoma Bettten. 



Plate XXXII, Fig. 28, Male, and Fig. 29, Female. 



Sesia tacoma Beutenmuller, Journ. N. Y. Ent. Soc. Vol. VI, 1898, p. 240. 



Male. — Head deep black, palpi yellow above and clothed with long black hairs beneath. Col- 

 lar narrowly yellow in front. Thorax deep black, with a narrow yellow stripe on the patagia and a 

 narrow yellow transverse mark at the posterior end ; underside with a yellow patch on each side. 

 Abdomen deep black, with a narrow yellow band at the end of the second, fourth, and last two 

 segments, on the last three extending around the body. Anal tuft black, yellow in the middle be- 

 neath. Femora black ; tibiae black, banded with yellow at the middle ; tarsi yellow ; anterior coxae 

 with a yellow line. Fore wings transparent, borders rather broad, brown black, edged within with 

 orange red. Discal mark prominent, edged with orange red. Transparent basal area triangular, 

 outer one rounded. Underside with borders and discal mark almost entirely orange. Hind wings 

 transparent, margin and fringes brown black ; underside with an orange line before the dark mar- 

 gin, and the veins orange. 



Female. — Head and thorax as in the male. Abdomen with three yellow bands, one on each of 

 the second, fourth, and last segments. Palpi wholly yellow. Fore wings with very narrow brown 

 black borders, and the orange red parts much broader than in the male, giving the wings a very red 

 appearance. Underside with the orange very bright, the borders very narrow, and the fringes 

 brown black ; discal mark sometimes with a small black centre. Hind wings with the veins and 

 narrow line before the brown black margin orange red ; underside with bright orange red borders, 

 fringes brown black. 



Expanse: Male, 20-21 mm.; female, 20-22 mm. 



Habitat. — Big Horn Mts., Wyoming. Mt. Ranier, 6300 feet, Washington. 



Types : One male. Coll. U. S. Nat. Mus. Two males and four females. Coll. Am. Mus. 

 Nat. Hist. 



Allied to Sesia chrysidiformis of Europe. The palpi are clothed with long 

 hairs, differing in this respect from all its congeners. In general appearance the 

 insect looks somewhat like one of the varieties of Albuna pyrarnidalis> with which 

 it may be confused at first sight. 



Sesia texana (Hy. Edw.). 



Plate XXXI, Fig. 4, Male. 



Pyrrhotamia texana Hy. Edwards, Papilio, Vol. I, 1881, p. 204 ; Grote, New Check List N. Am. 



Moths, 1882, p. 12 ; Beutenmuller, Bull. Am. Mus. Nat. Hist. Vol. V, 1893, p. 26 ; ibid. 



Vol. VIII, 1896, p. 145. 

 Pyrrhotamia wittfeldii Hy. Edwards, Papilio, Vol. Ill, 1883, p. 156 ; Ent. Amer. Vol. Ill, 1888, p. 



224; Beutenmuller, Bull. Am. Mus. Nat. Hist. Vol. IV, 1892, p. 175. 



Male. — Head brown black, palpi and collar orange, antennae black, ferruginous beneath. 

 Thorax black with a narrow orange stripe on each side, and a transverse orange mark posteriorly. 

 Abdomen brown black with an orange ring on the second, fourth, and last two segments, the last 

 three rings extending around the body, fifth segment orange beneath. Anal tuft brown black, 

 orange on each side beneath. Legs blue black, spurs and tufts orange. Fore wings with very small 

 transparent areas, the outer one sometimes covered with orange scales, borders and discal mark blue 

 or purple black. Underside with the costa and inner margin orange. Hind wings transparent with 

 very narrow blue or purple black margin, above and below. 



