Hellman Warren E, Fierke Melissa K
Washington State Department of Agriculture, 1111 Washington Ave, Olympia, WA 98501
State University of New York College of Environmental Science and Forestry, 1 Forestry Drive, Syracuse, NY 13210
J Insect Sci. 2014 Jan 8;14:4. doi: 10.1093/jis/14.1.4.
In-ground colonies of the native digger wasp, Cerceris fumipennis Say (Hymenoptera: Crabronidae), were sampled over two years in four New York State counties to characterize prey range, primarily their preying on beetles in the metallic wood-boring family, Buprestidae. These records were also used to evaluate beetle sampling efficiency by comparing collected beetles to historic county records and to identify limitations of wasp-mediated sampling in study areas. Overall, 1,530 beetles representing three families and 44 beetle species were collected from C. fumipennis. Five of these species (Agrilus cuprescens (Ménétriés) (Coleoptera: Buprestidae), A. pensus Horn, Buprestis nutalli Kirby, Chrysobothris scabripennis Gory and Laporte, Dicerca pugionata (Germar)) were new prey records for C. fumipennis. The wasps exhibited a strong preference for larger beetle genera (e.g., Dicerca, Buprestis), which accounted for 68% of beetles caught. Agrilus and Chrysobothris were the next dominant genera, accounting for 16% and 11%, respectively. A 4-19 mm prey size range is proposed, as all beetles collected were within this range despite the availability of prey outside of this range. Cerceris fumipennis caught 43% of the 42 buprestids species present in museum records from the four census counties as well as an additional 23 buprestid species that were not represented in museum records. Of the 22 buprestid species identified in museum collections that were not caught by C. fumipennis in the census counties, only one was within the proposed size range and active during the C. fumipennis flight season (late June through August). Overall, sampling C. fumipennis colonies over two summers at five sites resulted in 32% of the recorded buprestid species in New York State being caught, indicating that monitoring colonies is an efficient and viable means of quantifying buprestid assemblages.
在纽约州的四个县，对本土掘土黄蜂（Cerceris fumipennis Say，膜翅目：蛛蜂科）的地下巢穴进行了为期两年的采样，以确定其猎物范围，主要是它们捕食金属蛀木甲虫科（吉丁虫科）的甲虫情况。这些记录还用于通过将收集到的甲虫与历史上的县记录进行比较，来评估甲虫采样效率，并确定研究区域内黄蜂介导采样的局限性。总体而言，从烟色掘土黄蜂处收集到了代表三个科和44种甲虫的1530只甲虫。其中五个物种（铜绿吉丁虫（Agrilus cuprescens (Ménétriés)，鞘翅目：吉丁虫科）、彭氏吉丁虫（A. pensus Horn）、纳氏吉丁虫（Buprestis nutalli Kirby）、粗糙吉丁虫（Chrysobothris scabripennis Gory and Laporte）、 Pugionata吉丁虫（Dicerca pugionata (Germar)））是烟色掘土黄蜂新的猎物记录。黄蜂对较大的甲虫属（如Dicerca属、Buprestis属）表现出强烈偏好，这些属的甲虫占捕获甲虫的68%。Agrilus属和Chrysobothris属是接下来的优势属，分别占16%和11%。提出了4 - 19毫米的猎物大小范围，因为尽管该范围之外有猎物，但所有收集到的甲虫都在这个范围内。烟色掘土黄蜂捕获了来自四个普查县博物馆记录中的42种吉丁虫中的43%，以及博物馆记录中未出现的另外23种吉丁虫。在博物馆收藏中鉴定出的22种吉丁虫中，在普查县未被烟色掘土黄蜂捕获的，只有一种在提议的大小范围内且在烟色掘土黄蜂飞行季节（6月下旬至8月）活跃。总体而言，在五个地点对烟色掘土黄蜂巢穴进行两个夏天的采样，捕获了纽约州记录的吉丁虫物种的32%，这表明监测巢穴是量化吉丁虫群落的一种有效且可行的方法。
