Bassettia pallida
(agamic)agamic:The agamic (AKA unisexual) generation of an oak gall wasp (cynipini) species consists of only female wasps, which do not mate before laying the eggs which become the male and females of the sexual generation (sexgen).
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The gall's range is computed from the range of all hosts that the gall occurs on. In some cases we have evidence that the gall does not occur across the full range of the hosts and we will remove these places from the range. For undescribed species we will show the expected range based on hosts plus where the galls have been observed.
Created Feb 4, 2026 1:47 PM UTC
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Last updated Feb 4, 2026 1:47 PM UTC
Pairing of sexual and asexual generations of Nearctic oak gallwasps, with new synonyms and new species names (Hymenoptera: Cynipidae, Cynipini)
James Nicholls, George Melika, Scott Digweed, Graham Stone
(2022)
Bassettia pallida Ashmead, 1896, sexual generation
Gall. Asexual galls (Fig. 112) are in twigs, larval cells develop as cryptic elliptical chambers 3.2 mm long by 1.2 mm in diameter under the bark of small twigs.
Biology. Bassettia pallida, previously known only from asexual females, is now also known from its sexual generation. The asexual galls develop under the bark of twigs on Q. virginiana and Q. geminata. Galls mature in late September-October; adults emerge in November. Both sexual females and males were reared from galls within the same twig with enlarged and distorted buds on it, collected at the Archbold Biological Station (Florida) from Q. geminata in October. See Weinersmith et al. (2020) for the community ecology and natural enemy assemblage associated with galls.