Heteroecus dasydactyli

Females emerged on Mar. 28 from H. dasydactyli galls (Fig. 1 c) collected on Mt. Hamilton in March 1966. They were placed individually on 5 seedlings of Q. chrysolepis. Oviposition was not observed but by May 15 leaf galls were found on 1 of these seedlings; only males emerged from these galls.

The galls of the bisexual generation are monothalamous, round to oval swellings protruding from both surfaces of the leaf. They occur on leaves singly or in pairs and are brown when mature. Adults emerged from either surface. Thirteen galls measured 2.55 mm long by 2.05 mm wide.

[A photograph of the gall appears on page 3 of the pdf, FIgure 1D]

Heteroecus dasydactyli (bisexual generation)

The bisexual-generation galls are monothalamous, integral blister galls that appear in new leaves.

Host:
Quercus chrysolepis