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Notes on the green lacewing subgenus Ankylopteryx Brauer, 1864 (s. str.) (Neuroptera, Chrysopidae) from China, with description of a new species.

ABSTRACT: A taxonomic study of the green lacewing subgenus Ankylopteryx Brauer, 1864, from China is presented. Eight species of this subgenus are recorded from China. A new species, namely Ankylopteryx (A.) yangisp. nov., is described. Ankylopteryx (A.) delicatula Banks, 1937, and Ankylopteryx (A.) ferruginea Tsukaguchi, 1995 are recorded from China for the first time. Four new junior synonyms are proposed for Ankylopteryx (A.) octopunctata candida Fabricius, 1798: i.e. Ankylopteryx (A.) fraterna Banks, 1939, Ankylopteryx (A.) laticosta Banks, 1939, Ankylopteryx (A.) lii Yang, 1987, and Ankylopteryx (A.) tibetana Yang, 1987. A revised key to the Chinese species of the subgenus Ankylopteryx is provided.

SUBMITTER: Ma Y

PROVIDER: S-EPMC6989621 | biostudies-literature | 2020

REPOSITORIES: biostudies-literature

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Notes on the green lacewing subgenus Ankylopteryx Brauer, 1864 (<i>s. str.</i>) (Neuroptera, Chrysopidae) from China, with description of a new species.

Ma Yunlong Y Yang Xingke X Liu Xingyue X

ZooKeys 20200122

A taxonomic study of the green lacewing subgenus Ankylopteryx Brauer, 1864, from China is presented. Eight species of this subgenus are recorded from China. A new species, namely Ankylopteryx (A.) yangi<b>sp. nov.</b>, is described. Ankylopteryx (A.) delicatula Banks, 1937, and Ankylopteryx (A.) ferruginea Tsukaguchi, 1995 are recorded from China for the first time. Four new junior synonyms are proposed for Ankylopteryx (A.) octopunctata candida Fabricius, 1798: i.e. Ankylopteryx (A.) fraterna B ...[more]

PMID: 32021556

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Project description:Green lacewings (Neuroptera: Chrysopidae) are voracious predators of aphids and other small, soft-bodied insects and mites. Earlier, we identified (1R,2S,5R,8R)-iridodial from wild males of the goldeneyed lacewing, Chrysopa oculata Say, which is released from thousands of microscopic dermal glands on the abdominal sterna. Iridodial-baited traps attract C. oculata and other Chrysopa spp. males into traps, while females come to the vicinity of, but do not usually enter traps. Despite their healthy appearance and normal fertility, laboratory-reared C. oculata males do not produce iridodial. Surprisingly, goldeneyed lacewing males caught alive in iridodial-baited traps attempt to eat the lure and, in Asia, males of other Chrysopa species reportedly eat the native plant, Actinidia polygama (Siebold & Zucc.) Maxim. (Actinidiaceae) to obtain the monoterpenoid, neomatatabiol. These observations suggest that Chrysopa males must sequester exogenous natural iridoids in order to produce iridodial; we investigated this phenomenon in laboratory feeding studies. Lacewing adult males fed various monoterpenes reduced carbonyls to alcohols and saturated double bonds, but did not convert these compounds to iridodial. Only males fed the common aphid sex pheromone component, (1R,4aS,7S,7aR)-nepetalactol, produced (1R,2S,5R,8R)-iridodial. Furthermore, although C. oculata males fed the second common aphid sex pheromone component, (4aS,7S,7aR)-nepetalactone, did not produce iridodial, they did convert ∼75% of this compound to the corresponding dihydronepetalactone, and wild C. oculata males collected in early spring contained traces of this dihydronepetalactone. These findings are consistent with the hypothesis that Chrysopa males feed on oviparae (the late-season pheromone producing stage of aphids) to obtain nepetalactol as a precursor to iridodial. In the spring, however, wild C. oculata males produce less iridodial than do males collected later in the season. Therefore, we further hypothesize that Asian Chrysopa eat A. polygama to obtain iridoid precursors in order to make their pheromone, and that other iridoid-producing plants elsewhere in the world must be similarly usurped by male Chrysopa species to sequester pheromone precursors.

Dataset Information

Notes on the green lacewing subgenus Ankylopteryx Brauer, 1864 (s. str.) (Neuroptera, Chrysopidae) from China, with description of a new species.

Publications

Notes on the green lacewing subgenus Ankylopteryx Brauer, 1864 (<i>s. str.</i>) (Neuroptera, Chrysopidae) from China, with description of a new species.

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