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New faunal data on lacewings (Insecta, Neuroptera) collected from Saudi Arabia.

ABSTRACT: This study presents new data on the lacewing fauna of Saudi Arabia based on field work performed between 2014 and 2019. Sixty-one lacewing species from 37 genera and seven Neuroptera families were documented. Additionally, two species belonging to Dielocroce and Pseudomallada were identified only to genus level. Three of the identified species are new records to Saudi Arabia (Aspoeckiella gallagheri Hölzel, 2004, Bankisus maculosus Hölzel, 1983, and Nemoleon secundus Hölzel, 2002). Another three species are new to the fauna of the Arabian Peninsula (Mantispa aphavexelte Aspöck & Aspöck, 1994, Omoleon jeanneli Navás, 1936, and Stylascalaphus krueperi van der Weele, 1909). The first reports of eight species are provided after their original description from Saudi Arabia; namely, Creoleon ultimus Hölzel, 983, Cueta amseli Hölzel, 1982, Cu. asirica Hölzel, 1982, Distoleon asiricus Hölzel, 1983, Geyria pallida Hölzel, 1983, Neuroleon delicatus Hölzel, 1983, N. virgineus Hölzel, 1983 and Solter buettikeri Hölzel, 1982 Zoogeographically, most lacewing species documented in the Arabian Peninsula are endemic (26.2%), followed by Afro-syroeremic (23.0%), Afrotropical (18.0%), and Afro-syro-iranoeremic (14.8%) species. Palaearctic species (4.9%) had the lowest contribution.

SUBMITTER: Letardi A

PROVIDER: S-EPMC7272473 | biostudies-literature | 2020

REPOSITORIES: biostudies-literature

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New faunal data on lacewings (Insecta, Neuroptera) collected from Saudi Arabia.

Letardi Agostino A Abdel-Dayem Mahmoud S MS Al Dhafer Hathal M HM

ZooKeys 20200528

This study presents new data on the lacewing fauna of Saudi Arabia based on field work performed between 2014 and 2019. Sixty-one lacewing species from 37 genera and seven Neuroptera families were documented. Additionally, two species belonging to Dielocroce and Pseudomallada were identified only to genus level. Three of the identified species are new records to Saudi Arabia (Aspoeckiella gallagheri Hölzel, 2004, Bankisus maculosus Hölzel, 1983, and Nemoleon secund ...[more]

PMID: 32547295

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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

New faunal data on lacewings (Insecta, Neuroptera) collected from Saudi Arabia.

Publications

New faunal data on lacewings (Insecta, Neuroptera) collected from Saudi Arabia.

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