AMERICAN MOTHS OF THE SUBFAMILY PHYCITINAE 



151 



on the cambium of smooth bark on the trunks and 

 branches; and also feed in the galls on any part of the 

 tree. 



Distribution: Apparently throughout the range of 

 the genus Pinus in the Northern Hemisphere. Ameri- 

 can records from specimens (moths) before me as 

 follows: United States: Maine, Orono (Aug.); Massa- 

 chusetts, Amherst, Framingham (Oct.), Martha's Vine- 

 yard (Sept.), Pepperell (Aug.); Connecticut, Bradford, 

 Lyme (Aug.), New Haven (June); New York, Long 

 Island (Garden City, Oct., Great Neck, July), Warrens- 

 burg (Sept.); New Jersey, Lakehurst (May); District 

 oj Columbia, Washington (July, Aug.); Florida, Alton 

 (June), Eustis (June, July), Gainesville (June), Orlando 

 (June), "So. Florida" (June, July, Aug.); Illinois, Dim- 

 dee; Nebraska, Halsey (Apr., June, Aug.); Montana, 

 Dillon (July), EUiston, Evaro (Mar.); Colorado, Glen- 

 wood Springs; Arizona, Prescott (July) ; California, 

 Berkeley, Patrick's Creek (Sept.), Sacramento, Shasta 

 Retreat (July); Oregon, Ashland (July, Aug., Sept., 

 Oct.), Salem (Aug.), Colestin (June), Silver Lake (Aug.), 

 Sprague River (Jidy) ; Washington, Hoquiam, Pullman, 

 Rock Lake (Whitman County, Sept.); Seattle. Can- 

 ada: Labrador, Dublin Shore (Jjunenburg County); 

 Quebec, Montreal (June); Saskatchewan, Lutherland 

 (June, Aug., Sept.); British Columbia, Kaslo (June). 

 Guatemala: A series of males and females in the U. S. 

 National Museum, reared from pine cones. May 1927, 

 by J. G. Salas and labeled simply "Guatemala, C. A." 



The species is of considerable economic importance, 

 especially to young pine trees in our Western States, 

 and particularly in reforestation areas. It has an 

 extensive literature in the Old World. I have listed 

 here only the more important references and have 

 omitted purely European synonyms. For additional 

 references the reader is referred to Ragonot (Mono- 

 graph, p. 198), Hulst (Phycitidae of N. Amer., 1890), 

 the Journal of Economic Entomology, and the Review 

 of Applied Entomology. The most satisfactory infor- 

 mation on life history and larval habits will be found in 

 the MacKay (1943) and Craighead (1950) papers. 



308. Dioryctria sysstratiotes Dyar 

 Figure 866 



Dioryctria sysstratiotes Dyar, Ins. Inso. Menstr., vol. 7, p. 43, 

 1919. 



Forewing smooth, similar to that of abietella except: 

 A pale brownish suflFusion in median area forming a 

 rather large patch below discal spot; a similar brownish 

 shade outwardly bordering subterminal line; the patch 

 preceding antemedial line on inner margin, more dis- 

 tinct, larger, pale olivaceous brown. Hind wing some- 

 what darker, translucent smoky white with a very faint 

 brownish tint towards outer margin. 



Alar expanse, 23-28 mm. 



Female genitaha as in abietella except no (or only a 

 faint trace of) median ventral cleft in ductus bm-sae. 



Type locality: Cayuga, Guatemala (type in 

 USNM). 



Food plant : presumably Pinus. No rearing records. 



Distribution: Guatemala: Cayuga (June), Chejel 

 (June), Purulhd (July). 



Known only from females. Doubtfully distinct from 

 abietella except as a race or color form. Its exact status 

 will have to await discovery of a male. 



309. Dioryctria reniculella (Grote) 

 Figures 383, 867 



Pinipestis reniculella Grote, North Amer. Ent., vol. 1, p. 67, 

 1880. 



Dioryctria reniculella (Grote), Ragonot, Monograph, pt. 1, p. 200 

 1893.— Forbes, Cornell Mem. 68, p. 620, 1923.— McDun" 

 nough, Check list. No. 6131, 1939.— Brown, Canada Dep- 

 Agr. Publ. 712. Techn. Bull. 31, p. 13, 1941.— MacKay, Cana- 

 dian Ent., vol. 75, p. 94, 1943.— Craighead, U. S. Dep. 

 Agr. Misc. Publ. 657, p. 451, 1950. 



Maxillary palpus of male squamous. 



Forewing smooth; in color and maculation similar to 

 that of abietella except: Ground color pale brownish 

 gray; the transverse lines and discal spot more sharply 

 contrasted, more distinctly white; usually a rather large 

 ohvaceous patch on inner margin preceding the ante- 

 medial line; hind wing darker, pale smoky fuscous. 

 Alar expanse, 22-26 mm. 



Male genitalia with uncus tonguelike; more elongate 

 and narrower than that of any other American species; 

 its terminal margin very narrowly rounded; no incur- 

 vation of the lateral margins (its shape not appreciably 

 altered by flattening in slide preparations). A very 

 slight spur from the lower outer angle of the sclerotized 

 costal area of harpe, but no other spines from below 

 apex of costa. Penis armed only with anterior spine 

 cluster; no single stout spine on penis behind the an- 

 terior cluster. 



Female genitalia with only one strong spine cluster, 

 that at junction of bursa and ductus bursae; girdle of 

 spines in biu"sa before junction with ductus, weak, 

 broken, and the spines themselves greatly reduced. 



Type locality: New York (type in BM). 



Food plants: Various spruces; rarely in balsam fir 

 and tamarack. Reported as occasional in jack pine, 

 but such records are doubtful. The larvae feed in 

 terminals and cones and to a lesser extent upon the 

 foliage of the terminals. 



Distribution: United States: Maine, Blue HUl 

 (July), Sebec Lake (July); Connecticut, East River 

 (July), New Haven (June, Jidy); New York; Illinois, 

 Putnam County (July) ; Michigan, East Lansing (Aug.) ; 

 Colorado, Estes Park (July); California, Fallen Leaf 

 Lake (Aug.), Moimt Lowe (July) ; Washington, Belling- 

 ham (Aug.), Hoquiam, Kamiack Butte (Aug.), Pullman 

 (July, Aug.). Canada: Nova Scotia, Cape Breton 

 (Aug.); Quebec, St. Therese Isl. (St. John's County, 

 July) ; Ontario, Westree ; Saskatchewan (June) ; British 

 Columbia, Seton Lake (June, July), Victoria (July)- 



The species is easily distinguished by its genitalia. 

 In the past it has been frequently confused with 

 abietella and until 1893 was treated by Hulst and 

 Ragonot as a synonym of the latter. The larvae of the 

 two species often occur together in spruce cones, so 

 there is no safe way to separate them on their larval 



