Journal
ZOOKEYS
Volume -, Issue 568, Pages 87-118Publisher
PENSOFT PUBLISHERS
DOI: 10.3897/zookeys.568.6721
Keywords
Active pollination behavior; Breynia; DNA barcode; Glochidion; Gracillariidae; Japan; obligate pollination mutualism; Phyllanthus
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Funding
- Japan Society for the Promotion of Science [15H04421, 80204494]
- Grants-in-Aid for Scientific Research [15H02420, 26650165] Funding Source: KAKEN
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Epicephala moths are involved in obligate mutualisms with their Phyllanthaceae hosts, in which the female moths assure pollination and, in return, their progeny develop by consuming the seeds. Ecological, molecular and geographical data suggest that the genus includes several hundred species, but the majority remains to be formally described. Here we revise the Japanese species of Epicephala Meyrick, 1880. In addition to two previously named species, seven species are newly described: E. anthophilia sp. n., E. lanceolatella sp. n., E. perplexa sp. n., E. obovatella sp. n., E. corruptrix sp. n., E. parasitica sp. n. and E. nudilingua sp. n. The first four are species involved in obligate pollination mutualism, while the fifth is a pollinating seed parasite and the last two are derived non-pollinating seed parasites of herbaceous Phyllanthus. Each of the nine Japanese Epicephela species is specialized to a single plant species in the genera Glochidion, Breynia or Phyllanthus, except for E. obovatella and E. corruptrix that each utilizes two closely related Glochidion species. Considerable variations are found in pollination and oviposition behaviors among species, which are reflected in their proboscis and ovipositor morphologies, respectively. Molecular phylogeny indicated that there have been repeated transitions in oviposition mode during the diversification of Epicephala, which were accompanied by changes in ovipositor morphology, as suggested by a correlation analysis. Keys to species are provided.
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