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We review the genera of Phanacidini and provide updated diagnoses for each genus and a new key to the four genera. We also redescribe the enigmatic herb gall wasp Diakontschukia saussureae Diakontschuk, 2001 (Hymenoptera: Cynipidae: Phanacidini), based on a specimen collected in Haopingsi Nature Reserve, China. This is the first record of the tribe Phanacidini in China. Lastly, we provide extensive commentary on the validity of diagnostic characters that have been used for Phanacidini relative to other herb gall wasp tribes. We carried out a survey of Aulacideini, Aylacini, and Phanacidini to identify whether the length of F1 relative to F2 was of diagnostic value at the tribal level, finding that F1 was always conspicuously longer than F2 in Phanacidini and Aylacini but at most subequal to F2 in Aulacideini, suggesting that this is indeed a valuable character for diagnosing herb gall wasp tribes. Other characters discussed are the closure of the marginal cell and the dimensions of the mesopectus.
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Key innovations and the diversification of Hymenoptera
Abstract The order Hymenoptera (wasps, ants, sawflies, and bees) represents one of the most diverse animal lineages, but whether specific key innovations have contributed to its diversification is still unknown. We assembled the largest time-calibrated phylogeny of Hymenoptera to date and investigated the origin and possible correlation of particular morphological and behavioral innovations with diversification in the order: the wasp waist of Apocrita; the stinger of Aculeata; parasitoidism, a specialized form of carnivory; and secondary phytophagy, a reversal to plant-feeding. Here, we show that parasitoidism has been the dominant strategy since the Late Triassic in Hymenoptera, but was not an immediate driver of diversification. Instead, transitions to secondary phytophagy (from parasitoidism) had a major influence on diversification rate in Hymenoptera. Support for the stinger and the wasp waist as key innovations remains equivocal, but these traits may have laid the anatomical and behavioral foundations for adaptations more directly associated with diversification.
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- PAR ID:
- 10400071
- Publisher / Repository:
- Nature Publishing Group
- Date Published:
- Journal Name:
- Nature Communications
- Volume:
- 14
- Issue:
- 1
- ISSN:
- 2041-1723
- Format(s):
- Medium: X
- Sponsoring Org:
- National Science Foundation
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