Forest entomology . er. I found it very common in DelamereForest, Cheshire, but have not hatched- the fly. 8a. Andricus inflator (Htg.) This gall (fig. 143), which is the alternating species of A. globuli, isoriginally formed from a bud. In general appearance it is somewhatlike the thickened portion of that part of a turnip immediately abovethe bulb which is finallysurmounted by the gall proper is reallywithin the woody portion,and during the year inwhich eggs are depositedgrowth is not perceptiblyinterfered with, but thenext year the portionaffected by the insectagency swells, and
Forest entomology . er. I found it very common in DelamereForest, Cheshire, but have not hatched- the fly. 8a. Andricus inflator (Htg.) This gall (fig. 143), which is the alternating species of A. globuli, isoriginally formed from a bud. In general appearance it is somewhatlike the thickened portion of that part of a turnip immediately abovethe bulb which is finallysurmounted by the gall proper is reallywithin the woody portion,and during the year inwhich eggs are depositedgrowth is not perceptiblyinterfered with, but thenext year the portionaffected by the insectagency swells, and theadventitious buds formedthereon give rise to thetuft of leaves referred galls are not very com-mon, but may be lookedfor in June, and the fliesemerge only in July. Fly—size 2 to 4 and thorax black, slightly shining; abdomen in the female black above, red or orangebeneath,—in the male entirely black ; legs orange, but the posteriortibiae and coxa? dark ; antennas dark, pale at the base.— 143.—Gall of Andricus inflator. The next gall to be considered is very common in the sexual form,but not so general in the agamic stage. The latter is, according toAdlers classification, Aphilothrix collaris (Htg.), and the former,Andricus curvator (Htg.), or the leaf-twisting gall. The gall of (9) Aphilothrix collaris is formed upon a bud, and,being concealed, may easily be overlooked. Adler says : In Sept- 150 FOREST ENTOMOLOGY. ember and October the gall becomes loosened and falls to the ground,and a few may remain, but only inquilines and parasites are rearedfrom those adherent galls. The flies are said to be difficult to rearfrom the galls, as after the galls are mature a year and a half passesbefore the appearance of the flies. 9a. Andricus curvator (Htg.)1 This alternating generation with Aphilotlirix collaris is a verycommon gall, and may be found about the beginning or middle of
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