SOME AMERICAN GEOMETRID MOTHS — CAPPS 131 



Remarks.— Resembling typical fiscellaria, especially the pale forms, 

 which are probably Quercus feeders ; and without differences in gen- 

 italic structure of sufficient constancy for accurate separation. How- 

 ever, in view of differences in biology and rather constant habitus 

 athasaria is regarded as a distinct species. The transverse lines of 

 fiscellaria are usually more clearly defined and more sinuate than 

 those of athasaria which usually has the lines evenly curved and dif- 

 fuse, often accentuated on the veins. L. fiscellaria passes the winter 

 in the egg stage and athasaria in the pupal stage. 



As with fiscellaria, several names are retained to designate sub- 

 specific segregates and typical athasaria is restricted to the eastern 

 oak and hemlock- feeding variety. 



10. LAMBDINA ATHASARIA PELLUCIDARIA (Grote and Robinson) 



Ellopm pellucid a Ha Grote and Robinson, Ann. Lye. Nat. Hist. New York, vol. 

 8, p. 456, 1867— Babnes and McDunnough, Check list of the Lepidoptera 

 of Boreal America, No. 4651, 1917.— McDunnough, Check list of the Lepidop- 

 tera of Canada and the United States of America (Part 1, Macrolepidoptera), 

 No. 5142, 1938. 



Therina pellucidaHa (Grote and Robinson) Dyak, Psyche, vol. 9, p. 21, 1900 — 

 Hulst, U. S. Nat. Mus. Bull. 52, p. 334, 1903. 



Male. — Closely resembling typical athasaria, somewhat darker 

 smoky fuscous with the upper surface of the wings appearing rather 

 smooth and uniform with the irrorations weak or obsolete. 



Alar expanse, 29-40 mm. 



Genitalia like those of typical athasaria. 



Female. — Similar to the male in color and markings. 



Alar expanse, 28-38 mm. 



Genitalia like those of typical athasaria. 



Type. — In Academy of Natural Sciences of Philadelphia. 



Type locality— -"Atlantic District (Penn. !)" 



Food plants. — Pinus. 



Distribution. — United States: Arkansas, Florida, Georgia (Apr.), 

 Maryland (Mar.), Massachusetts (May, June), New Jersey (May), 

 New York (June), North Carolina (Apr.), Ohio (June), Rhode 

 Island, Virginia, Washington Territory (possibly mislabeled; one 

 specimen from the Edward Graef collection). 



Eighty-eight specimens examined. 



Remarks.— The name should be restricted to the eastern pine-feeding 

 variety. 



11. LAMBDINA ATHASARIA VITRARIA (Grote) 



Ellopia vitraria Grote, Trans., Kansas Acad. Sci., vol. 8, p. 51, 1882.— Babnes 

 and McDunnough, Check list of the Lepidoptera of Boreal America, No. 



480078 — 43 3 



