. Bulletin - New York State Museum. Science. tapered to an acute point and are three fourths as long as the width of the pupa. Larva. The fuU grown larva is about mm long, pale yellow- ish, with the segmentation distinctly marked. Head rather prominent, narrow, tapering anteriorly, an- tennae consistmg of a very broad, retracted basal segment and a rather large, spindle-shaped, terminal segment. Chitinous fork or '* breastbone " Y-shaped, the anterior arms broad, well separated, each slightly emarginate anteriorly, distal extremity somewhat en- larged. Antepenultimate abdominal segmen
. Bulletin - New York State Museum. Science. tapered to an acute point and are three fourths as long as the width of the pupa. Larva. The fuU grown larva is about mm long, pale yellow- ish, with the segmentation distinctly marked. Head rather prominent, narrow, tapering anteriorly, an- tennae consistmg of a very broad, retracted basal segment and a rather large, spindle-shaped, terminal segment. Chitinous fork or '* breastbone " Y-shaped, the anterior arms broad, well separated, each slightly emarginate anteriorly, distal extremity somewhat en- larged. Antepenultimate abdominal segment with a pair of sublateral, chitinous, dark brown tubercles ventrally, while on the dorsum there appears to be a median, subcorneal, slightly curved, chitinous tubercle, the last segment with two pairs of sublateral minor protuberances. Chokecherry gall fly(Cecidomyia Virgin- ia n i a e n. sp.). The peculiar enlarged, galled fruit ^fcoSia^yfaTval of the chokcchcrry, Prunus virginianus, has enlarged"^* (Origi- bccH known for somc time and was noticed by the late Dr Lintner in his 12th report for 1896, p. 313. He there states that cherries apparently galled by this insect have been very abundant in Keene Valley, and adds that Prof. George F. Atkinson of Cornell University named and described a fungus, Exoascus cecidomophilus, which was usually associated with these insects. Repeated though unsuccessful efforts have been made to obtain the adult, and, lacking this, we '^ ^ have deemed it advisable to describe and ' :. illustrate the larva under the above name. : % Larva. The full grown larva is mm long, yellowish or yellowish red in color and rather stout. Head rather prominent, nar- row, tapering very slightly anteriorly and with short, rather conspicuous two seg- -mented antennae. The first joint of the latter is very short, about twice as broad as long, the second subconical and twice as long as broad. Chitinous fork or "breast- bone " rather long, slender,
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectscience, bookyear1887
