353 



iPterol'lwrus pterodaclylus Walker, List Lep. Ins. B. M. XXX, 938, 1864. 

 Stenoftilia I'Icrodaclyla Fcrnald, Smith's List Lcp. N. A. 87, 1891. 

 Id., Pter. N. A. 58, 1898. 

 Id., Bull. 52 U. S. N. M. 447, 1902. 

 Meyrick, Gen. Ins. C, 19, 1910. 

 Id., Wagner's Lep. Cat. pars 17, 30, 1913. 

 Barnes & McDunnough, Check List 151, 1917. 

 tStcnoptilia fusca Hofmann, Deutsch. Pter. 97, 106, 1895, (biol). 

 Mimacseoptilus ptcrodactyla Tutt, Pter. Brit. 100, 1896, (biol.). 



Head and anterior half of thorax dull brown. A white line over the eye 

 extends along sides of short frontal tuft. Antennae white with a brown line 

 above. Palpi white above; second joint with thick scaly vestiture, obliquely 

 truncate in front, scarcely equalled by the small third joint. Legs white on 

 one side, brown on the other; spurs moderate. Posterior half of thorax bright 

 ochreous brown with whitish dorso-Iateral stripes. Abdomen slightly darker 

 with lateral and paired dorsal dark spots, the lateral scarcely distinguishable, 

 and some white scales in posterior margins of segments. 



Primaries with costal portion dark, inner light, concolorous with adjacent 

 parts of thorax. Costa vaguely checkered with white scales. First lobe with 

 a vague streak of mixed white and black scales. Cleft preceded by two dark 

 dots connected by lines of scattered blackish scales with a dot near middle of 

 cell. A similar line reaches from below this to the base. Fringes dull gray- 

 brown with paler bases and a few vague dark tufts. Secondaries dark brown 

 with concolorous fringes. Expanse about 25 mm. 



The male genitalia are similar to the form which predominates in 

 Platyptilia but have a much different uncus. 



Distribution: Europe. The only North American specimens 

 which we have seen are those in the Fernald collection from West 

 Farms, N. Y. (Angus). 



Tutt quotes a description of the larva and pupa from Porritt. 

 Entomologist X\', 44-5. Since we are not familiar with the original 

 we repeat this quotation in part. 



"Length about five-eighths of an inch, and scarcely so stout as seems usual 

 in the genus. Head small, and narrower than the second segment ; it is polished, 

 rather flat in front, but rounded on the sides. Body cylindrical, of fairly uni- 

 form width, but tapering a little at the extremities, segmental divisions well 

 defined ; the skin, with a soft and half-transparent appearance, is sparingly 

 clothed with short hairs. There are two varieties, which are perhaps about 

 equally numerous. In one of them the ground color is a bright grass-green; 

 in the other, it is equally bright yellow-green ; in both forms the head is pale 

 yellowish-brown, very prettily reticulated with intense black. The dark green, 

 or in some of the yellow specimens dark brown, alimentary canal forms the 

 dorsal stripe; sub-dorsal lines rather indistinct, greyish white; below there is 

 a still more indistinct waved line of the same colour; there is, again, a similarly 



