Druon pattoni (Basset, 1881), comb. nov.

Cynips pattoni Bassett, 1881: 98, female, gall.
Andricus pattoni (Bassett): Weld (1952a).

Gall (Fig. 124). Fluffy, orange-brown woolly leaf galls on the underside of the leaf midrib, containing clusters of larval cells oriented perpendicularly to the leaf surface. The cells are completely hidden by short, dense pubescence. The largest clusters often extend for more than half the length of the midrib. Found on young trees, most often on leaves near the apex of strongly growing shoots. The galls resemble in their woolly covering those of D. quercusflocci (Walsh), but the latter are round rather than often elongate, with longer woolly hairs, and that species is only found on Q. alba.

Biology. Only the asexual generation is known, which induces galls on Q. chapmanii and Q. stellata (= Q. obtusiloba) (Section Quercus, Series Stellatae). Galls mature in October–November; adults emerge shortly afterwards under laboratory conditions or in February of the following year in the field.

Distribution. USA: Connecticut to Florida, Oklahoma, Texas (Burks 1979).

Andricus pattoni

Quercus chapmani, margaretta, stellata
Leaf galls, detachable
Woolly midrib cluster in fall similar to Andricus flocci, like Fig 208.

[Photo caption (no photo)]
A similar midrib woolly cluster [to Andricus flocci] on Q stellata and Q margaretta and Q breviloba. Adults the next April 10-16.

[Presumed synonym]

Quercus breviloba
Leaf galls, detachable
Woolly midrib cluster on under side of leaf in fall. Fig 213 Boerne TX. Contained adults in late fall.

[Photo caption]
Never reared. On Q breviloba. Collected at Boerne TX in October.

Galls, clusters of larval cells along the midvein of the leaves of Quercus obtusiloba [stellata], on the under side, and standing perpendicular to its surface. The cells are completely hidden in a short, dense brownish wool. The largest clusters often extend along the midvein more than half the length of the leaf. They are found on young trees, and usually on the leaves near the top of the stronger growing shoots. The insects live over winter in the galls. My specimens gathered in October were kept in a warm room and the insects came out in the February following. The galls resemble in their woolly covering those of C. flocci [Andricus quercusflocci] of Walsh, but the latter are round and the woolly hairs are longer, and the species is only found on Quercus alba.

Andricus pattoni (Bassett 1881)

Hosts: Quercus chapmanii

[Asexual generation detachable leaf gall found in the fall]