152 



UNITED STATES NATIONAL MUSEUM BULLETIN 207 



habits. However, renicvlella is primarily a spruce 

 feeder, while abietella shows a marked preference for 

 the pines. Both species are borers, as are all the 

 Dioryctria species. It is unfortunate that Miss Mac- 

 Kay in her otherwise excellent paper (1943) should refer 

 to renicvlella as "The spruce foliage worm." It does 

 feed to some extent upon the foliage of terminal shoots; 

 but likewise, and more frequently within the terminals 

 themselves and in the cones, and in economic literature 

 is quite properly referred to as "the spruce cone moth." 

 It is a strictly American species limited in distribution, 

 apparently, to the northern United States and Canada. 



310. Dioryctria ponderosae Dyar 

 FiGtJBEs 384, 868 



Dioryctria ponderosae Dyar, Ins. Insc. Menstr., vol. 2, p. 2, 

 1914.— McDunnough, Check list, No. 6130, 1939. 



Maxillary palpus of male squamous. 



Forewing smooth; like that of abietella except: Black- 

 ish markings more strongly contrasted; a broad black 

 band inwardly bordering the antemedial line, a similar 

 band on some specimens of abietella but not so broad 

 nor so well contrasted; subterminal line outwardly 

 angled at middle; the white transverse lines and discal 

 spot well contrasted. Hind wing white, clouded with 

 smoky fuscous towards outer margin; the veins slightly 

 darkened. Alar expanse, 27-30 mm. 



Male genitalia with uncus considerably shorter and 

 broader than that of either abietella or renicvlella; its 

 terminal margin broadly rounded; lateral margins in- 

 ciu-ved near its base. Harpe with apex of sclerotized 

 costa produced into a blunt, curved hook, no spine from 

 lower outer angle of the sclerotized costal area ; clasper 

 reduced. Female genitalia distinguished by its short 

 ductus bursae. 



Type localitt: Lamedeer, Mont, (type in USNM). 



Food plant: Pinus ponderosa. Larva a borer in the 

 cambium of the bark. 



Distribution: Montana, Lamedeer (Jvme), Colorado, 

 Glenwood Springs (June, July, Aug.); California, 

 American River (May) . 



A distinct species known only from a half-dozen 

 specimens from the above localities. It belongs defi- 

 nitely with the smooth-winged Dioryctria, although a 

 few roughened scales can be distinguished in the black 

 inner borders of the antemedial line on a couple of the 

 specimens. Its genitalia separate it easily from all 

 other smooth-winged species. The name has been 

 misappKed to a color variety of zimmermani. This 

 misidentification is discussed under the latter name. 

 The Missoula, Mont., female (Hopkins U. S. No. 11508) 

 mentioned by Dyar in his description of ponderosae 

 belongs to this variety of zimmermani. 



311. Dioryctria majorella Dyar 

 FiQUBES 385, 871 



Dioryctria majorella Dyar, Ins. Insc. Menstr., vol. 7, p. 43, 1919. 

 Dioryctria muellerana Dyar, Ins. Insc. Menstr., vol. 7, p. 85, 1919 

 (new synonymy). 



Maxillary palpus of male squamous. 



Forewing smooth, similar in color and markings to 

 that of sysstratiotes except: Somewhat more suffused; 

 the whitish markings fainter and a duller, more sordid 

 white; the pale discal spot obscure; the blackish inner 

 border of the subterminal line and the blackish band 

 preceding the antemedial line broader. Hind wing 

 smoky white, the veins faintly darkened. Alar expanse, 

 28-33 mm. 



Male genitalia distinguished by greatly increased 

 width of the sclerotized costal area of harpe; a short 

 spur projects from the outer margin of this sclerotized 

 area just below its apex. D. erythropasa has a similar 

 harpe; but differs markedly in other details of the geni- 

 talia — differently shaped uncus, narrower clasper, and 

 different spining of penis. 



Female genitalia differ from those of sysstratiotes only 

 in insignificant details. The female genitalia of both 

 species differ from those of abietella chiefly in the greater 

 broadening and thickening of the membrane of ductus 

 bursae near its junction with bursa copulatrix. 



Type localities: Jalapa, Mexico (majorella, 9, in 

 USNM) ; Zacualpdn, Mexico {muellerana, &, in USNM). 



Food plant: Pine. 



Ejiown only from Dyar's two types and a pair (cf and 

 9) from British Honduras. The Honduran specimens 

 are smaller than the Mexican types and in wretched 

 condition, but their genitalia are a perfect match in all 

 details. In his description of muellerana Dyar sug- 

 gested that it might be the male of majorella. This 

 synonymy is proven by the Honduran examples. They 

 were reared from cones of Pinus caribaea. 



312. Dioryctria disclusa Heinrich 

 FiGUBB 872 



Dioryctria disclusa Heinrich, in Farrier and Tauber, Iowa State 

 CoU. Journ. Sci, vol. 27, p. 495, 1953. 



MaxiUary palpus of male squamous. 



Forewing smooth; basal area to antemedial line 

 orange yellow; area beyond brownish red, more or less 

 shaded or suffused with yellowish orange (on some 

 specimens the groimd color of the entire wing yellowish 

 orange), usually the red shade most conspicuous in the 

 area between subterminal line and termen; transverse 

 lines narrow, white; a white streak along lower margin 

 of cell between the transverse lines; antemedial line 

 faint, oblique, nearly straight; subterminal line stronger, 

 set well out, rather near terminal margin, outwardly 

 angulate between veins 6 and lb; discal mark (when dis- 

 tinguishable) a white line along discoceUular vein; some 

 very short white dashes on terminal margin; cUia smoky 

 white. Hind wing smoky white to pale smoky gray, the 

 paler examples showing a very faint ocherous tint; 

 veins slightly darkened; cilia whitish. Alar expanse, 

 24-29 mm. 



Male genitalia like those of auranticella. Female 

 genitalia essentially like those of auranticella. The 

 differences shown in the figures for the two species 

 are the extremes and represent, at most, individual 

 variations. 



