AMERICAN MOTHS OF THE SUBFAMILY PHTCITINAE 



155 



317. Dioryctria zimmermani (Grote) 

 FiGUKEs 389, 875, 878 



Nephopieryx (Dioryctria) zimmermani Grote, Canadian Ent., 



vol. 9, p. 163, 1877. 

 Nephopieryx (Pinipestis) zimmermani (Grote), Canadian Ent., 



vol. 10, p. 19, 1878.— Packard, U. S. Dep. Agr. Fifth Rep. 



Ent. Comm., p. 73, 1890. 

 Pinipestis zimmermani (Grote), Bull. U. S. Geol. Geogr. Surv. 



Terr., vol. 4, p. 699, 1878; op. cit., vol. 6, p. 589, 1882; N. 



Amer. Ent., vol. 1, p. 11, pi. 2, fig. 10, 1879. 

 Nephopieryx zimmermani (Grote) Kellicott, Canadian Ent., vol. 



11, p. 114, 1879; Ent. Amer., vol. 1, p. 173, 1885. 

 Dioryctria zimmermanni (Grote) Ragonot, Ent. Amer., vol. 6, 



p. 114, 1889; Monograph, pt. 1, p. 190, 1893 (emended 



spelling of specific name). — Forbes, Cornell Mem. 68, p. 620, 



1923. 

 Pinipestis zimmermanni (Grote) Hulst, Phycitidae of N. Amer., 



p. 137, 1890.— McDunnough, Check list, No. 6133, 1939. 

 Salebria delectella Hulst, Canadian Ent., vol. 27, p. 57, 1895. — 



Ragonot, Monograph, pt. 2, p. 550, 1901. (New synonymy.) 

 Dioryctria delectella (Hulst) Dyar, Proc. Ent. Soc. Washington, 



vol. 6, p. 227, 1904. 

 Retinia austriana Cosens, Canadian Ent., vol. 38, p. 362, 1906. — 



Busck, Journ. New York Ent. Soc, vol. 15, p. 236, 1907. 

 Pinipestis delectella (Hulst) Barnes and McDunnough, Check 



list of the Lepidoptera of Boreal America, No. 5570, 1916. — 



McDunnough, Check list. No. 6134, 1939. 

 Dioryctria ponderosae Heinrich (not Dyar), in Keen, U. S. Dep. 



Agr. Misc. Pub. 273, p. 38, 1938. 

 Dioryctria zimmermani (Grote) Craighead, U. S. Dep. Agr. 



Misc. Publ. 657, p. 452, 1950. 



Maxillary palpus of male squamous. 



Forewing with a ridge of raised (roughened) scales 

 preceding and one following the antemedial line, some 

 rough scaling of the disca] spots and on some specimens 

 in the outer median area above inner margin and im- 

 mediately before subterminal line, the raised scaling 

 somewhat variable and nowhere reaching to costa, 

 easily and frequently flattened in the spreading and 

 setting of specimens; color variable, blacMsh gray with 

 a rather broad, but faint, whitish dusting before the 

 subterminal line and, on some specimens but to a lesser 

 extent, immediately following the antemedial line and 

 narrowly and faintly along the inner margin of the 

 subbasal scale ridge; basal and terminal areas normally 

 shaded with red, the extent and tint of the shading 

 extremely variable and on some specimens almost 

 obliterated or confined to dull patches of an oblivace- 

 ous hue; when strongly accented, extended over base 

 and onto the coUar of the prothorax, usually most dis- 

 tinct between subbasal scale ridge and antemedial line; 

 the raised-scale ridges themselves, black; transverse 

 lines dull white, always distinguishable but sometimes 

 faint, bordered inwardly and outwardly by black lines 

 which broaden into dark wedges on costa; white discal 

 spot usually distinct; a black Une along terminal margin. 

 Hind wing white more or less shaded with smoky fuscous 

 along costa and termen, less so on male than female; a 

 fine dark line along termen; veins only faintly darkened. 

 Alar expanse, 25-33 mm. 



Male genitaUa with uncus but slightly longer than 

 broad, the lateral margins slightly concave; terminal 

 margin rounded; when flattened in preparation, as in 

 figure 390a of cambiicola. Harpe with costa broadly 



sclerotized and terminating at apex in a long curved 

 pointed hook, a short spine from its lower outer angle; 

 clasper digitate; cucullus narrow, pointed at apex. 

 Penis with posterior spine, long, strong, straight, evenly 

 tapering to a sharp point. Vinculum stout, consider- 

 ably longer than broad, evenly tapering to roundly 

 angulate terminal margin. 



In the female genitalia the variation in the spining 

 of bursa shown in the figures is merely individual and 

 is equaled or exceeded in any series of eastern or western 

 specimens. Ductus biursae much longer than bursa, 

 sclerotized for its entire length except for a short dis- 

 tance from genital opening, the sclerotization ribbon- 

 like, broadening and bent towards bursa, longitudinally 

 ribbed on caudal half and terminating caudally in a 

 produced, bluntly pointed or acutely roimded central 

 projection. Bursa proportionally small; the spine 

 clusters closely grouped at its posterior half; the en- 

 larged lobe giving off the ductus seminaUs appreciably 

 thickened. 



Type localities: Buffalo, N. Y. (zimmermani, in 

 BM; paratype, cf , in USNM); Colorado (delectella, in 

 AMNH, ex Kutgers) ; Toronto, Ontario, Canada (aus- 

 triana, in Royal Ontario Mus.). 



Food plant: Pinus spp. Most if not all species of 

 pine in this country are attacked. The spruce records 

 given by Packard (1895) have never been verified. 

 They were probably based upon misidentified larvae. 

 I doubt very much that zimmermani feeds on anything 

 but pine. The larvae bore into the cambium of the 

 trunk, branches, and twigs, causing considerable dam- 

 age to the new growth of older trees and sometimes even 

 killing younger trees (8 inches or less in diameter) by 

 completely girdling their boles. The place of attack is 

 usually indicated by a resinous mass of exuded pitch 

 mixed with frass and larval exuviae. 



Distribution: United States: New York, Buffalo, 

 Coram (Long Island, Aug.), Warrensburg (Aug.); Con- 

 necticut, Woodstock (Aug.); Rhode Island, Washington 

 County (June); Massachusetts, Dover (Aug.), Martha's 

 Vineyard (Aug.); New Hampshire, Hampton (Sept.); 

 North Carolina, Tryon (Aug.) ; Ohio, Akron (July, Aug.), 

 Lake County (July, Aug.), Mentor (June), Scioto 

 County (July) ; Illinois, Oregon (July, Aug.) ; Nebraska, 

 Ainsworth (Aug.), Halsey (May, June, July, Aug.), 

 Meadville (Aug.), Norden (Aug.), Wyoming, Wyoming 

 National Forest (June, July) ; Montana, Banner (July) , 

 Missoula (July); Colorado, only the state locality (fe- 

 male cotypes of delectella, Bruce, collector) ; New Mexico, 

 Taos Junction (July); Arizona, Santa Catalina Mts. 

 (Bear Canyon, July), White Mts. (Aug.); Calijomia, 

 Placerville, San Mateo (June), Ventura; Oregon, Butte 

 Falls, Coletin; Washington, Friday Harbor (Aug.), 

 Rock Lake (July). Canada: Ontario, Toronto. 



The foregoing records are from specimens before me, 

 most of them reared. The range of the species probably 

 extends over the entire northern areas of the United 

 States wherever its hosts occur and presumably over 

 a considerable area in southern Canada. 



Hulst's delectella was described from Colorado females 



