. Annual report. New York State Museum; Science; Science. 262 NEW YORK STATE MUSEUM Rhopalomyia gnaphalodis Felt 1911 Felt, E. P. Econ. Ent. Jour., 4: 484 This form was reared April 25-29, 1910 by Prof. T. D. A. Cock- erell, Boulder, Col., from a woolly polythalamous gall on Arte- misia gnaphalodes. Gall. An irregular, lobulate, polythalamous swelling 1 cm in diameter and cm long. The surface is irregularly wrinkled and thickly clothed with short, white pubescence. Exuviae, protruding from a circular exit hole, whitish trans- parent. Rhopalomyia pedicellata Felt 1908 Felt, E. P. N. Y. Stat
. Annual report. New York State Museum; Science; Science. 262 NEW YORK STATE MUSEUM Rhopalomyia gnaphalodis Felt 1911 Felt, E. P. Econ. Ent. Jour., 4: 484 This form was reared April 25-29, 1910 by Prof. T. D. A. Cock- erell, Boulder, Col., from a woolly polythalamous gall on Arte- misia gnaphalodes. Gall. An irregular, lobulate, polythalamous swelling 1 cm in diameter and cm long. The surface is irregularly wrinkled and thickly clothed with short, white pubescence. Exuviae, protruding from a circular exit hole, whitish trans- parent. Rhopalomyia pedicellata Felt 1908 Felt, E. P. N. Y. State Mus. Bui. 124, p. 365, 366 1909 Ottawa Nat., 22: 248, 249 1910 Stebbins, F. A. Springf. Mus. Nat, Hist. Bui. 2, p. 53 (Cecidomyia euthamiae Stebbins) This species resembles R. fusiformis both in the form of the gall and the general appearance of the adult. The gall, how- ever, is easily distinguished by the long stem or pedicel which is about one-half the length of the deformity. The galls occur on the narrow-leaved solidago, Solidago graminifolia, the ear- lier ones become fully developed about the middle of July and others may be found from that date to the end of the summer. This species is rather common in the vicinity of Albany. Gall. The gall is about 2 cm long, the stem being .6 or .7 cm in length, while the slender, enlarged, fusiform portion is to cm long. The latter is strongly ribbed, deep purplish green at the tip. It frequently arises from the edge of the leaf, occasionally from the flat surface of either the leaf or stem. The interior walls are suc- culent when fresh, becoming mealy after drying. A single whitish larva some 3 mm long occurs in each gall. See New York Museum Bulletin 175, Plate 1, figure 6, for a colored Pig. 71 R hopalomyia pedicellal a; fifth antenna! segment of male, enlarged (original). Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration
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