REVISION MALACOSOMA HUBNER IN NORTH AMERICA 151 



present-day town named Siskyou or Siskiyou in Siskiyou County, have 

 not found one in old atlases, and such a town is not listed in Gudde 

 (1960) Place Names of California, a Geographical Dictionary. The printed 

 label on the lectotype saying "Siskiyou Co., Cal." must be regarded as 

 accurate, so the type locality must be restricted to some place in 

 Siskiyou County. 



Larvae collected near McCloud, Siskiyou County, Calif. (Coll, Nos. 

 163 and 164) were quite uniform in coloration and were typical of 

 what is regarded as c. recenseo. In addition, pinned adult males from 

 this area are mostly dark reddish-brown. Therefore, the type locality 

 is restricted to McCloud, Siskiyou County, Calif., which is near the 

 southern boundary of Siskiyou County, and about as close to the center 

 of the range of c. recenseo as it is possible to be and still remain in Siskiyou 

 County. 



PARALECTOTYPES.— One female in the USNM. 



DISTRIBUTION (fig. 3). — As herein restricted, c. recenseo includes 

 the populations of calif ornicum found west of the divide of the southern 

 Sierra Nevada, and extending as far north as southern Siskiyou County. 

 Its westward distribution is limited by the Central Valley of California, 

 but it is more likely to be found there now, following the planting of 

 numerous fruit trees. To the east, north, and northeast it intergrades 

 with adjoining populations of M. californicum and it is difficult to set a 

 definite boundary. The southern limit of its distribution is not known, 

 but it is possible that it could intergrade with M. californicum fragile at 

 the southern end of the Sierra Nevada. This also could be the case 

 near the crest of the Sierras. 



COMMENTS. — If c. recenseo were surrounded on all sides by inter- 

 grading populations such as those which are present at the northern 

 end of its distribution it would probably not be given subspecific 

 status, but since it appears to be eff"ectively separated from nearby 

 populations on the west, south, and east by physical and ecological 

 barriers, and since many of the larvae and males are distinctively 

 colored, it is recognized as a subspecies. 



Specimens Examined. — 707 (Museum specimens — 95 males, 87 females, 

 351 larvae; reared specimens — 1 10 males, 64 females, plus numerous larvae 

 and egg masses). See Appendix I for data on collections made during this 

 study (page 273). 



California. — Baxter (Placer Co.); Baxter's Camp; Blue Canyon (Placer 

 Co.); Boca Lake (Nevada Co.); 1 mi. N. Brockway (Placer Co.); Bumey 

 Mountain (Shasta Co.); Burney Springs Plantation (Lassen Co.); Chester; 

 junction of Cal. 32 and Cal. 36, 8 mi. E. Childs Meadow (Tehama Co.); 

 Cisco (Placer Co.); Dardanelles; Donner State Park (Placer Co.); Dunsmuir 

 (Siskiyou Co.); Echo Laike (Shasta Co.); Echo Summit (El Dorado Co.); 

 Emigrant Gap (Placer Co.); 1 mi. VV. Fish Camp (Mariposa Co.); Goodyear 



