SOME AMERICAN GEOMETRID MOTHS CAPPS 127 



J. J. de Gryse 4 studied larvae of somniaria from Vancouver Island, 

 British Columbia, and compared them with larvae of the "Eastern 

 Hemlock Looper" from the Muskoka Lakes region in the Province 

 of Ontario. He noted slight differences in the mandibular structure 

 but stated that owing to the scarcity of material the constancy of the 

 differences could not be adequately checked. I have made numerous 

 dissections of the specimens available, examining the parts in situ 

 and mounted on slides. The mandibles not only exhibit considerable 

 variation individually, but also vary in the different instars. No 

 differences were observed that persisted with sufficient constancy to 

 enable accurate separation of the various forms. 



For the present the name lugubrosa should be applied to the northern 

 and rather dark, heavily dusted with fuscous, variety of fiscellaria on 

 Abies and Tsuga. 



5. LAMBDINA FISCELLARIA PULTARIA (Guenge) 



Ellopia puUarki Guenee, Histoire naturelle des insectes h'pidopteres, vol. 9, p. 

 131, 1857. — Barnes and McDtjnnoitgh, Check list of the Lepidoptera of 

 Boreal America, No. 4556, 1917. — McDunnough, Check list of the Lepidop- 

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

 No. 5150, 1938. 



Ellopia scitata Walker, List of the lepidopterous insects in the collection of 

 the British Museum, vol. 26, p. 1510, 1862. 



Elliopia invexata Walker, List of the lepidopterous injects in the collection of 

 the British Museum, vol. 26, p. 1512, 1862. 



Therina fiscellaria (Guen£e) Dyar, Psyche, vol. 10, p. 13, 1903. 



Male. — Pale ocherous, fresh specimens with a slight testaceous tinge ; 

 surface of the wings smooth, sheeny, with the dusting of pale fuscous 

 scales weak or obsolete; transverse lines evenly curved, less sinuate 

 than usually present in typical fiscellaria. 



Alar expanse 35-40 mm. 



Genitalia like those of typical fiscellaria. 



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



Alar expanse, 30-38 mm. 



Genitalia like those of typical fiscellaria. 



Types. — In United States National Museum (pultaria, No. 55722) ; 

 British Museum (scitata, invexata). 



Type localities. — "Amerique Septentrionale" (pultaria) ; east Flor- 

 ida (scitata) ; no locality given for invexata. 



Food plant. — Quercus. 



Distribution. — Uxited States: Florida (Apr., May). 



Twenty-nine specimens examined. 



Remarks. — The series is rather uniform in color and habitus, and 

 for reasons similar to those regarding the retention of names to desig- 



* Scientific Agriculture, vol. 14, No. 10, 1934. 



