. Bulletin - New York State Museum. Science. 122 NEW YORK STATE MUSEUM subglobular and the 3d to i8th inclusive, pedicellate, 19th simple. Each segment consists of a broadly expanded basal two thirds, the remainder forming a simple, narrow pedicel. The enlarged part bears a basal whorl of short, nearly straight setae followed by irregularly placed, long, curved setae arising from conspicuous tubercular elevations. Most of the segments appear to have a dis- tinct though nearly invisible ridge with whitish, oval spots along its length at the basal third of the enlargement. Male genitalia with th
. Bulletin - New York State Museum. Science. 122 NEW YORK STATE MUSEUM subglobular and the 3d to i8th inclusive, pedicellate, 19th simple. Each segment consists of a broadly expanded basal two thirds, the remainder forming a simple, narrow pedicel. The enlarged part bears a basal whorl of short, nearly straight setae followed by irregularly placed, long, curved setae arising from conspicuous tubercular elevations. Most of the segments appear to have a dis- tinct though nearly invisible ridge with whitish, oval spots along its length at the basal third of the enlargement. Male genitalia with the clasp segment rather slender, strongly curved exteriorly, nearly straight interiorly, the apical segment strongly curved and ^vij ^^,^ tapering gradually to an acute, dark apical tooth. Dorsal la- mella greatly dilated, broadly rounded laterally, nearly di- vided and widely separated posteriorly; ventral lamellae slender, nearly parallel, taper- ing gradually to a rather acutely rounded apex. Stylet rather prominent, stout, tip broadly rounded. Described from alcoholic specimens. Willow beak gall (R h a b- dophaga rigidae n. sp.). The galls of this species are comparatively common on the small willows (Salix rigidae and S. 1 u c i d a) in the vicinity of Albany and may be instantly recognized by their terminal or subter- minal location and fusiform shape. They are about an inch long and are tipped with a rather characteristic, slender, curved beak. The gall of this species was early described by Dr Fitch under the name of Cecidomyia salicis, and on account of its specific name being preoccupied, it was changed by Baron Osten Sacken to C. rigidae. Female, Antennae dark brown, moniliform, composed of 24 or 25 and extending to the base of the wings; basal segment much enlarged, subglobular, the second short, thick, the third some- what elongate and with a very short pedicel, the fifth and following. Fig. 29 Rhabdophaga rigidae, gall en larged (Original). Please note th
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectscience, bookyear1887
