The northernmost record of Eriostethus rufus (Uchida, 1932) (Hymenoptera, Ichneumonidae) with an indication of new host, Trichonephila clavata (Koch, 1878) (Araneae, Araneidae) and its web manipulation
Eriostethus rufus (Uchida, 1932) is a polysphinctine ectoparasitoid of araneid spiders (Neoscona spp.) and is endemic to Japan. An individual was collected in Yamagata Prefecture (38º46' N), northern Japan, the northernmost record of the species and also the genus. Its identification was confir...
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| Format: | Article |
| Language: | English |
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Sociedade Entomológica do Brasil
2021-06-01
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| Series: | Entomological Communications |
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| Online Access: | https://www.entomologicalcommunications.org/index.php/entcom/article/view/132 |
| _version_ | 1818885293377323008 |
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| author | Keizo Takasuka |
| author_facet | Keizo Takasuka |
| author_sort | Keizo Takasuka |
| collection | DOAJ |
| description | Eriostethus rufus (Uchida, 1932) is a polysphinctine ectoparasitoid of araneid spiders (Neoscona spp.) and is endemic to Japan. An individual was collected in Yamagata Prefecture (38º46' N), northern Japan, the northernmost record of the species and also the genus. Its identification was confirmed by morphology and by DNA barcoding. The cocoon was found in a large modified web, which is unique in that the web structure is shaped like an inverted triangle extending to over 50 cm with the cocoon hanging from an ill-defined part of the cocoon web without any organized structure surrounding the cocoon. The host spider of this individual appears to be Trichonephila clavata (Koch, 1878) (Araneidae, Nephilinae) based on several circumstantial evidences. The structure of the modified web suggests that the pre-existing web was partly reused, the orb web was completely removed, and sustaining threads of the barrier web would be newly moored to the substrates. This record means that E. rufus parasitises host spiders of two subfamilies, which is unusual for the group. |
| first_indexed | 2024-12-19T16:03:08Z |
| format | Article |
| id | doaj.art-3c3f34dc548046e9b01f11cf684ba5bd |
| institution | Directory Open Access Journal |
| issn | 2675-1305 |
| language | English |
| last_indexed | 2024-12-19T16:03:08Z |
| publishDate | 2021-06-01 |
| publisher | Sociedade Entomológica do Brasil |
| record_format | Article |
| series | Entomological Communications |
| spelling | doaj.art-3c3f34dc548046e9b01f11cf684ba5bd2022-12-21T20:14:54ZengSociedade Entomológica do BrasilEntomological Communications2675-13052021-06-01310.37486/2675-1305.ec03015The northernmost record of Eriostethus rufus (Uchida, 1932) (Hymenoptera, Ichneumonidae) with an indication of new host, Trichonephila clavata (Koch, 1878) (Araneae, Araneidae) and its web manipulationKeizo Takasuka0Institute for Advanced Biosciences, Keio UniversityEriostethus rufus (Uchida, 1932) is a polysphinctine ectoparasitoid of araneid spiders (Neoscona spp.) and is endemic to Japan. An individual was collected in Yamagata Prefecture (38º46' N), northern Japan, the northernmost record of the species and also the genus. Its identification was confirmed by morphology and by DNA barcoding. The cocoon was found in a large modified web, which is unique in that the web structure is shaped like an inverted triangle extending to over 50 cm with the cocoon hanging from an ill-defined part of the cocoon web without any organized structure surrounding the cocoon. The host spider of this individual appears to be Trichonephila clavata (Koch, 1878) (Araneidae, Nephilinae) based on several circumstantial evidences. The structure of the modified web suggests that the pre-existing web was partly reused, the orb web was completely removed, and sustaining threads of the barrier web would be newly moored to the substrates. This record means that E. rufus parasitises host spiders of two subfamilies, which is unusual for the group.https://www.entomologicalcommunications.org/index.php/entcom/article/view/132Darwin wasphost spiderNephilinaethe Polysphincta group of genera |
| spellingShingle | Keizo Takasuka The northernmost record of Eriostethus rufus (Uchida, 1932) (Hymenoptera, Ichneumonidae) with an indication of new host, Trichonephila clavata (Koch, 1878) (Araneae, Araneidae) and its web manipulation Entomological Communications Darwin wasp host spider Nephilinae the Polysphincta group of genera |
| title | The northernmost record of Eriostethus rufus (Uchida, 1932) (Hymenoptera, Ichneumonidae) with an indication of new host, Trichonephila clavata (Koch, 1878) (Araneae, Araneidae) and its web manipulation |
| title_full | The northernmost record of Eriostethus rufus (Uchida, 1932) (Hymenoptera, Ichneumonidae) with an indication of new host, Trichonephila clavata (Koch, 1878) (Araneae, Araneidae) and its web manipulation |
| title_fullStr | The northernmost record of Eriostethus rufus (Uchida, 1932) (Hymenoptera, Ichneumonidae) with an indication of new host, Trichonephila clavata (Koch, 1878) (Araneae, Araneidae) and its web manipulation |
| title_full_unstemmed | The northernmost record of Eriostethus rufus (Uchida, 1932) (Hymenoptera, Ichneumonidae) with an indication of new host, Trichonephila clavata (Koch, 1878) (Araneae, Araneidae) and its web manipulation |
| title_short | The northernmost record of Eriostethus rufus (Uchida, 1932) (Hymenoptera, Ichneumonidae) with an indication of new host, Trichonephila clavata (Koch, 1878) (Araneae, Araneidae) and its web manipulation |
| title_sort | northernmost record of eriostethus rufus uchida 1932 hymenoptera ichneumonidae with an indication of new host trichonephila clavata koch 1878 araneae araneidae and its web manipulation |
| topic | Darwin wasp host spider Nephilinae the Polysphincta group of genera |
| url | https://www.entomologicalcommunications.org/index.php/entcom/article/view/132 |
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