335 

 Acidalia insulsaria Guene"e. Plate 10, fig. 52; plate 13, fig. 32, pupa. 



Aeidalia insulsaria Guen. ! ! !, Phal., i, 469, 1857. 



Walk., Lep. Het. Br. Mus.,xxii,718, lHfil. 

 Acidalia persimilata Grote!!!, Proc. Eut. Soc. Phila., i, 347, pi. 3, fig. 5, 1863. 



8 <$ and 8 9. — A delicate species, with very triangular wings, especially 

 the hind wings, which are less curved on the outer edge than usual, being 

 nearly straight (but slightly bent), and as long as the inner edge; outer edge 

 scalloped with fine points. Antenna? and space between silvery-white; in 

 the male, pectinated on the basal half; front of a peculiar greenish tawny hue; 

 palpi pale, upcurved, and passing beyond the front, slender. Both wings 

 alike, with a peculiar luteous tinge, and a very dull, slightly greenish, tinge, 

 without any distinct lines, but flecked irregularly with darker scales, with a 

 submarginal waved, white, obscure line, dotted with black on the venules. 

 Discal dot represented by raised scales. Edge of both wings dark, slightly 

 scalloped; fringe very long, slender, a little unequal ; on the edge, a slight row 

 of dark points. Beneath paler, with the submarginal row of minute black 

 points present. 



Length of body, S , 30, 9 , 0.28 ; of fore wing, $ , 0. 12, 9,038; expanse 

 of wings, 0.75-0.85 inch. 



Maine (Packard, Mus. Peab. Acad. Sc); Chelsea, Mass, September 

 (Sanborn) ; Andover, Mass. (Sanborn) ; Salem, Mass., July 18, at light (Cas- 

 sino) ; West Farms, N. Y. (Angus) ; Buffalo, N. Y. (Grote) ; Albany, N.Y., 

 August 20, September 4 (Lintner and Meske) ; New Jersey (Sachs) ; Waco, 

 Texas, October 21-28, November 13 (Belfrage) ; Dallas, Texas, May 4-12 

 (Boll, Mus. Peab. Acad. Sc). 



This very delicate luteous species, with an almost imperceptible greenish 

 tinge, is, on both wings, flecked irregularly with darker scales, with no lines, 

 except a submarginal, waved, fine, white line, with black points, on the 

 venules. It may also be recognized by the short hind wings, with the outer 

 edge much less convex than usual. Its range is wide, as it was one season 

 common in Maine, and appears to be frequently taken in Texas. This com- 

 mon species is M. Guenee's insulsaria, as I learned by examination of his 

 type-specimens; it is also Mr. Grote's persimilata, as I have received, through 

 his kindness, several type-specimens. The larva I have reared on Celastrus 

 scandens at Brunswick, Me., but, unfortunately, preserved no description of 

 the caterpillar. Mr. Belfrage has also reared it in Texas, and sent me the 

 pupae. 



