1. Most known click beetle (Coleoptera: Elateridae) sex pheromones have been identified from economically important European species. We hypothesized that pheromone components might be conserved between New and Old World species, and so tested blends of known pheromones in California and Washington states.
2. Males of the endemic species Idolus californicus and Idolus columbianus (subfamily Elaterinae) were attracted to blends of neryl esters, many of which are known pheromones of related European species. Electroantennogram assays determined that antennae of male beetles responded strongly to two neryl esters, and in field bioassays, males of both species were specifically attracted to neryl hexanoate.
3. Female I. californicus were found to produce both neryl hexanoate and neryl octanoate, and lures that contained neryl hexanoate alone or in blends attracted male beetles. Neryl octanoate was not attractive, and neither synergized nor antagonized attraction to neryl hexanoate.
4. Males of Dalopius spp. also were captured in traps baited with lures containing neryl octanoate.
5. Our results support the hypothesis that the neryl ester pheromone motif is conserved among taxonomically related European and North American elaterids in the tribe Elaterinae, which should aid in the identification of pheromones of pest species within the tribe.

中文翻译：

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美国西部 Idolus Desbrochers des Loges 和 Dalopius Eschscholtz（鞘翅目：Elateridae）属物种的性信息素和性引诱剂

1. 大多数已知的点击甲虫（鞘翅目：Elateridae）性信息素已从具有重要经济意义的欧洲物种中鉴定出来。我们假设信息素成分在新旧世界物种之间可能是保守的，因此在加利福尼亚州和华盛顿州测试了已知信息素的混合物。
2. 地方性物种Idolus californicus和Idolus columbianus（Elaterinae 亚科）的雄性被橙花酯的混合物所吸引，其中许多是欧洲相关物种的已知信息素。触角电图测定确定雄性甲虫的触角对两种橙花酯反应强烈，在野外生物测定中，这两种甲虫的雄性都被己酸橙花酯特别吸引。
3. 女我。发现加利福尼亚州同时生产己酸橙花酯和辛酸橙花酯，单独或混合含有己酸橙花酯的诱饵会吸引雄性甲虫。辛酸橙花酯没有吸引力，对己酸橙花酯的吸引力既不协同也不拮抗。
4. Dalopius spp的雄性 也被用含有辛酸橙花酯的诱饵诱捕。
5. 我们的结果支持这样的假设，即橙花酯信息素基序在 Elaterinae 部落中与分类学相关的欧洲和北美 Elaterids 中是保守的，这将有助于识别部落内害虫物种的信息素。