130 BULLETIN 190, UNITED STATES NATIONAL MUSEUM 



seqnoiae. When the two species dwell in one tree their resinous nodules 

 cannot be distinguished until the moths emerge. Adults are rarely cap- 

 tured. The numerous examples in the collection at the United States 

 National Museum, with few exceptions, were obtained by rearing. The 

 collection data for this material are as follows : Ashland and Rogue River, 

 Oreg., on Douglas spruce, Pseudotsuga taxifolia, May -June, 1914 (Miller 

 and Brunner) ; Butte Falls, Oreg., and Riggins, Idaho, on Pinus pon- 

 derosa, May-June 1914 (L. O. Swartz and Brunner) ; Corvallis, Oreg.. 

 on pine and spruce, July 15, 1924 (B. G. Thompson) ; Hoquiam, Wash., 

 on Picea sitchensis (Burke) ; Big Hole County, Mont., on Pinus contorta 

 (Brunner) ; Missoula, Mont., on Pinus ponderosa and Picea engelmannii, 

 May-June 1914 (Brunner) ; and Victoria, British Columbia, on spruce 

 (E. H. Blackmore). 



VESPAMIMA PINI (Kellicott) 



Aegeria pini Kellicott, Can. Ent., vol. 13, pp. 5, 157, 1881. — Packard, Insects in- 

 jurious to forest and shade trees, U. S. Ent. Comm. Bull. No. 7, p. 180, 1881. 



Harmonia pini Hy. Edwards, Papilio, vol. 2, p. 54, 1882. — Packard, 5th Rep. U. S. 

 Ent. Comm., p. 727, 1890. — Comstock, Manual for the study of insects, p. 261, 

 1895. 



Parharmonia pini Beutenmuller, Bull. Amer. Mus. Nat. Hist., vol. 8, p. 124, 1896 ; 

 vol. 9, p. 219, 1897; Mem. Amer. Mus. Nat. Hist., vol. 1, pt. 6, p. 264, pi. 30, 

 fig. 13, 1901. — McDuNNOUGH, Check list of the Lepidoptera of Canada and the 

 United States of America, pt. 2, No. 8763, 1939. 



Male. — Antennae long, nearly filiform, black above, rusty black beneath, 

 pectinations short and fine. Labial palpus with a short brush, black, 

 orange at base. Head black, a brush on top and an encircling posterior 

 fringe, orange. Collar blue-black. Thorax blue-black, slightly touched 

 with orange at wing base beneath. Abdomen blue-black, segment 4 broadly 

 banded with orange, sides and venter wholly orange ; anal tuft long, slen- 

 der, black above, orange at the sides and beneath. Legs wholly blue or 

 violaceous-black. Forewing densely suffused between the veins, nearly 

 opaque, smoky black, Hindwing semitransparent, less densely sufifused 

 between the veins; narrow margins, conspicuous discal mark and veins 

 dull black. 



Expanse : Male 28 to 32 mm,, female 32 to 34 mm. 



Distribution. — Atlantic Coast and New England States ; Midwestern 

 States and eastern Canada ; Appalachian regions southward. 



Type. — Male, In the collection of D, S, Kellicott, 



Remarks. — In general this species follows the distribution of its prin- 

 cipal food plant, white pine, Pinus strobus. Because of the hemispherical 

 masses of resin formed over the larval burrows on tree trunks, the abun- 

 dance or scarcity of the insect can be readily estimated. Heavy infestations 

 resulting in ugly scars no doubt reduce the timber value. Well-grown trees 

 are attacked with preference, and as these usually survive the actual loss 

 is not great. The moths are very poorly represented in most collections. 



