Defensive Nymphs of the Woolly Aphid Thoracaphis kashifolia (Hemiptera) on the Oak Quercus glauca
Aphid nymphs with enlarged fore- and mid-legs were found from woolly colonies of Thoracaphis kashifolia (Hormaphidinae, Nipponaphidini) on leaves of the evergreen Quercus glauca in Japan. It was shown that they grasped an introduced moth larva with their legs and some inserted their stylets deep int...
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| Format: | Article |
| Language: | English |
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Wiley
2016-01-01
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| Series: | Psyche: A Journal of Entomology |
| Online Access: | http://dx.doi.org/10.1155/2016/4036571 |
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| author | Utako Kurosu Shigeyuki Aoki Keigo Uematsu Mayako Kutsukake Takema Fukatsu |
| author_facet | Utako Kurosu Shigeyuki Aoki Keigo Uematsu Mayako Kutsukake Takema Fukatsu |
| author_sort | Utako Kurosu |
| collection | DOAJ |
| description | Aphid nymphs with enlarged fore- and mid-legs were found from woolly colonies of Thoracaphis kashifolia (Hormaphidinae, Nipponaphidini) on leaves of the evergreen Quercus glauca in Japan. It was shown that they grasped an introduced moth larva with their legs and some inserted their stylets deep into the body. These defenders were first-instar nymphs of the alate generation and were produced by aleyrodiform apterae from early September onward. There was a large variation in the size of their forelegs. First-instar nymphs (to be alates) produced early in the season had fore-femorotrochanters shorter than those produced later. The molting rate (the percentage of pharate individuals) of the latter was very low (less than 5% to zero), suggesting their semisterility. Although first-instar nymphs with various lengths of forelegs joined to attack moth larvae, these facts indicate that an incipient caste differentiation occurs within the first-instar nymphs of the alate generation. |
| format | Article |
| id | doaj-art-644eb4922fc5443e81e7d070ffaf1ecd |
| institution | Kabale University |
| issn | 0033-2615 1687-7438 |
| language | English |
| publishDate | 2016-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Psyche: A Journal of Entomology |
| spelling | doaj-art-644eb4922fc5443e81e7d070ffaf1ecd2025-02-03T05:47:45ZengWileyPsyche: A Journal of Entomology0033-26151687-74382016-01-01201610.1155/2016/40365714036571Defensive Nymphs of the Woolly Aphid Thoracaphis kashifolia (Hemiptera) on the Oak Quercus glaucaUtako Kurosu0Shigeyuki Aoki1Keigo Uematsu2Mayako Kutsukake3Takema Fukatsu4Faculty of Economics, Chuo University, 742-1 Higashinakano, Hachioji, Tokyo 192-0393, JapanFaculty of Economics, Rissho University, Osaki 4-2-16, Tokyo 141-8602, JapanBioproduction Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba 305-8566, JapanBioproduction Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba 305-8566, JapanBioproduction Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba 305-8566, JapanAphid nymphs with enlarged fore- and mid-legs were found from woolly colonies of Thoracaphis kashifolia (Hormaphidinae, Nipponaphidini) on leaves of the evergreen Quercus glauca in Japan. It was shown that they grasped an introduced moth larva with their legs and some inserted their stylets deep into the body. These defenders were first-instar nymphs of the alate generation and were produced by aleyrodiform apterae from early September onward. There was a large variation in the size of their forelegs. First-instar nymphs (to be alates) produced early in the season had fore-femorotrochanters shorter than those produced later. The molting rate (the percentage of pharate individuals) of the latter was very low (less than 5% to zero), suggesting their semisterility. Although first-instar nymphs with various lengths of forelegs joined to attack moth larvae, these facts indicate that an incipient caste differentiation occurs within the first-instar nymphs of the alate generation.http://dx.doi.org/10.1155/2016/4036571 |
| spellingShingle | Utako Kurosu Shigeyuki Aoki Keigo Uematsu Mayako Kutsukake Takema Fukatsu Defensive Nymphs of the Woolly Aphid Thoracaphis kashifolia (Hemiptera) on the Oak Quercus glauca Psyche: A Journal of Entomology |
| title | Defensive Nymphs of the Woolly Aphid Thoracaphis kashifolia (Hemiptera) on the Oak Quercus glauca |
| title_full | Defensive Nymphs of the Woolly Aphid Thoracaphis kashifolia (Hemiptera) on the Oak Quercus glauca |
| title_fullStr | Defensive Nymphs of the Woolly Aphid Thoracaphis kashifolia (Hemiptera) on the Oak Quercus glauca |
| title_full_unstemmed | Defensive Nymphs of the Woolly Aphid Thoracaphis kashifolia (Hemiptera) on the Oak Quercus glauca |
| title_short | Defensive Nymphs of the Woolly Aphid Thoracaphis kashifolia (Hemiptera) on the Oak Quercus glauca |
| title_sort | defensive nymphs of the woolly aphid thoracaphis kashifolia hemiptera on the oak quercus glauca |
| url | http://dx.doi.org/10.1155/2016/4036571 |
| work_keys_str_mv | AT utakokurosu defensivenymphsofthewoollyaphidthoracaphiskashifoliahemipteraontheoakquercusglauca AT shigeyukiaoki defensivenymphsofthewoollyaphidthoracaphiskashifoliahemipteraontheoakquercusglauca AT keigouematsu defensivenymphsofthewoollyaphidthoracaphiskashifoliahemipteraontheoakquercusglauca AT mayakokutsukake defensivenymphsofthewoollyaphidthoracaphiskashifoliahemipteraontheoakquercusglauca AT takemafukatsu defensivenymphsofthewoollyaphidthoracaphiskashifoliahemipteraontheoakquercusglauca |