REVISION MALACOSOMA HUBNER IN NORTH AMERICA 93 



Malacosoma constrictum constrictum (Henry Edwards) 



Suggested common name: PACIFIC TENT CATERPILLARo 



Clisiocampa constricta Henry Edwards, 1874, p. 368. 



Clisiocampa constricta Stretch, 1881, pp. 65-66. — Packard, 1881, pp. 41-42. — 

 Edwards, 1889, p. 78.— Packard, 1890, p. 121.— Dyar, 1892a, p. 326.— 

 Dyar, 1893, pp. 39-40.— Packard, 1893, pp. 177-178.— Neumoegen and 

 Dyar, 1894, p. 157. Type: Lectotype, male, here designated, Napa 

 County, Calif., May. American Museum of Natural History, 



Clisiocampa strigosa Stretch, 1881, p. 67. Type: Lectotype, male, here desig- 

 nated, Yosemite Valley, Calif., July. American Museum of Natural 

 History. 



Malacosoma constricta (Stretch), Dyar, 1898, p. 6.— Dyar, 1903, p. 262.— Essig, 

 1926, p. 697 (in part, California and Oregon populations). — Dyar, 1928, 

 p. 623, pi. 86d.— Collier, 1936, p. 1 1 1 .— McDunnough, 1938, p. 138.— 

 Keen, 1952, p. 95 (in part, California and Oregon populations). 



Malacosoma constricta strigosa (Stretch), Dyar, 1903, p. 262. — McDunnough, 

 1938, p. 138. 



Malacosoma constrictum (Stretch), Langston, 1957, pp. 9-10 (in part, California 

 and Oregon populations). 



ADULT MALES (males in figs. 140-151).— Color usually light straw- 

 yellow, occasionally somewhat brownish. Wings Ughtly dusted with 

 brown scales; lines on forewings brown, varying from quite distinct 

 to \drtually absent, but usually distinct; outer line usually sharply 

 curved toward base of wing at costal margin so it meets it at nearly 

 a right angle as in figure 140; median area same color as inner and 

 outer areas in most specimens. Hindwing same color as forewing, 

 sometimes crossed with a faint brownish line. Lower surface of wings 

 same color as upper, usually with a single brown line crossing forewing, 

 and sometimes with a brown line crossing hindwing. Epiphysis small, 

 usually about the length of second segment of foretarsus. 



MALE TERMINALIA. — Posterior edge of seventh sternite straight 

 to slighdy concave, often with three points (fig. 58) . Genitalia (fig. 34) 

 intermediate in size compared with M. americanum (fig. 31) and M. 

 disstria (fig. 33); shape of eighth sternite distinctive (fig. 38), with the 

 "arms" extending to or slightly past the parameres and distinctly con- 

 verging (the distance between the points of the "arms" is approxi- 

 mately half the basal width of the eighth sternite). Parameres longer and 

 thinner than in other species, tending to converge or touch at the tips. 

 Accessory claspers usually as in figure 13. 



ADULT FEMALES (females in figs. 140-151).— Color fairly dark 

 reddish-brown. Forewings dusted with whitish-yellow scales which are 



6 See Appendix III (page 289). 



