Druon alexandri Melika, Nicholls & Stone, sp. nov.

Gall (Fig. 12). Reddish-yellow furry gall mass (gregarious, multilocular) on underside of leaf, to 20 mm long, projecting from leaf by up to 15 mm. Extremely hard to distinguish externally from the asexual generation galls of D. protagion, D. receptum or Andricus tecturnarum Kinsey, 1920.

Biology. Only the asexual generation is known, which induces furry leaf galls on Q. turbinella (Section Quercus, Series Leucomexicanae). Galls mature in October–November; adults start to emerge in January, peak emergence in in March.

Distribution. USA: Arizona.

Andricus sp D
Woolly-bear-gall wasp
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Hosts: Quercus turbinella, oblongifolia

Unlike all other woolly galls, they are tricolor or banded, usually with crimson red at both ends and a band of white hairs in the middle.