Zhang Gan-Yu, Ji Ying-Chao, Gao Peng, Wen Jun-Bao
Beijing Key Laboratory for Forest Pest Control, Beijing Forestry University, Beijing 100083, China.
College of Plant Protection, Shandong Agricultural University, Tai'an 271708, China.
Insects. 2019 Sep 4;10(9):284. doi: 10.3390/insects10090284.
(1) Motschulsky (Coleoptera: Curculionidae: Cryptorrhychinae) is a major quarantine forest pest in China. It often co-occurs with (Coleoptera: Curculionidae: Cryptorrhychinae) on a single host (Mill.) Swingle (tree of heaven). (2) In this study, to explain the coexistence of the two weevils on a single host, we investigated the oviposition behavior of and oviposition sites of and under afield and laboratory conditions. (3) The characteristic behaviors of females prior to oviposition included searching, locating, excavation, turning, locating the oviposition cavity, egg deposition, and hiding. (4) The oviposition sites used by and differed. females laid eggs in the soil near and compound leaf petioles, while females laid eggs in trunks. The eggs in compound leaf petioles did not hatch in the field. (5) and utilized different oviposition sites and these differences in habitat use may reduce the competition for resources between species during the larval period, thus facilitating their coexistence on .
（1）锈色粒肩天牛（鞘翅目：天牛科：沟胫天牛亚科）是中国一种主要的检疫性森林害虫。它常与光肩星天牛（鞘翅目：天牛科：沟胫天牛亚科）在同一寄主臭椿（樗树）上共同出现。（2）在本研究中，为了解释这两种天牛在同一寄主上的共存现象，我们在野外和实验室条件下研究了锈色粒肩天牛的产卵行为以及锈色粒肩天牛和光肩星天牛的产卵部位。（3）锈色粒肩天牛雌虫产卵前的特征行为包括搜寻、定位、挖掘、转身、定位产卵腔、产卵和隐藏。（4）锈色粒肩天牛和光肩星天牛使用的产卵部位不同。锈色粒肩天牛雌虫在臭椿根部和复叶叶柄附近的土壤中产卵，而光肩星天牛雌虫在臭椿树干中产卵。复叶叶柄中的卵在野外未孵化。（5）锈色粒肩天牛和光肩星天牛利用不同的产卵部位，这些栖息地利用上的差异可能会减少幼虫期物种间对资源的竞争，从而促进它们在臭椿上的共存。
