Common, a spring gall, on both Apocarya and Eucarya hickories; found singly or in groups on lower leaf surface between veins; 3.5-5.0 mmin height, elongate-conical, narrowing gradually from base to pointed apex; surface whitish green, eventually turning brown, obscured except at apex by white hairs longer than gall diameter; gall base shallowly concave; wall uniformly thin, becoming brittle; larval chamber rough with weak longitudinal ridges. This gall differs from that of C. striolata only in having a thick covering of long, white hair.
In central Maryland this species is one of two spring galls with larvae developing between late April and early June. A series of adults emerged from caged previous year's galls on 16-18 April when hickory leaves were unfurling. A specimen of Lestodiplosis, a predaceous cecidomyiid, was reared with this series of adults. Very small, unidentifiable galls were evident on May 17, 2005. Circled with a marker, these traces were full-grown galls of C. albipilosa with full- grown larvae on May 24. Galls still on the leaves after mid-June are parasitized or contain dead lar- vae. See under C. striolata for more details on timing of galls.
Carya | aquatica, cordiformis, floridana, glabra, illinoiensis, laciniosa, myristiciformis, ovata, pallida, palmeri, texana, tomentosa |
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Texture | hairy |
Alignment | erect, leaning |
Detachable | yes |
Location | between veins, lower leaf |
Walls | thin |