Heteroecus fragilis (agamic)

Heteroecus lyoni (agamic)

Andricus burnetti (agamic)

Loxaulus boharti (agamic)

Heteroecus fragilis

Detachable, monothalamous stem gall with a thick wall formed from many small, fragile, sponge-like chambers. Yellow, spherical, 5-8 mm in diameter.
(Fig. 4)

Host:
Quercus palmeri (syn. Quercus dunnii)

Heteroecus lyoni

Detachable, monothalamous, hard, brown stem gall about as wide as tall with flaring sides and flat top 5-11 mm in diameter with an elevated central spot (Fig. 5, see also Weld, 1957, Fig. 164).

Host:
Quercus palmeri (syn. Quercus dunnii)

Trichoteras burnetti Dailey and Sprenger, NEW SPECIES
(Fig. 2)

Host. —Quercus dunnii
Gall. —Yellow, highly pubescent aborted axillary bud or leaf petiole gall; polythalamous with angular basal larval cells; diameter 1.0-3.0 cm.

Loxaulus boharti Dailey and Sprenger, New Species

Host: Quercus dunnii [palmeri]

Integral stem gall, larval cells 2 mm in diameter, develop in wood under bark, stems slightly lumpy though lumps barely noticeable until insects emerge. Similar to gall of [Loxaulus brunneus](https://www.gallformers.org/gall/887) ...  Insects emerge in late March and early April from 2-year-old twigs and only the basal half of prior year twigs.

Galls similar to the above were collected on . . . Quercus cedrosensis. No insects were reared.

Distribution: Baja California, CA

Gall-inducing cynipid wasps from Quercus dunnii Kellogg (Hymenoptera)