Maier Chris T
Department of Entomology, Connecticut Agricultural Experiment Station, P.O. Box 1106, New Haven, CT 06504-1106, USA.
J Econ Entomol. 2007 Aug;100(4):1291-7. doi: 10.1603/0022-0493(2007)100[1291:dahocr]2.0.co;2.
The distribution and hosts of the exotic cedar-boring beetle, Callidiellum rufipenne (Motschulsky) (Coleoptera: Cerambycidae), were determined in five northeastern U.S. states by capturing adults on cedar trap logs and by rearing adults from various conifers. This beetle was detected in the coastal states of Massachusetts, Rhode Island, Connecticut, New York, and New Jersey. In these states, adults emerged from the live or dead wood of four genera and eight species of Cupressaceae; species of Pinaceae were not hosts. Through its entire range, C. rufipenne is reported to infest at least 14 species of Cupressaceae, four species of Pinaceae, and one species of Taxaceae; but, records of Pinaceae and possibly Taxaceae are suspect. Based on the number of adults that emerged from coniferous poles in a five-way choice test in the field, the infestation level was significantly greater in Chamaecyparis thyoides (L.) Britton, Sterns, and Poggenburg and Juniperus virginiana L. than in Pinus rigida Miller, Pinus strobus L., and Tsuga canadensis (L.) Carribre (last three species uninfested). In a second test of host preference in the wild, beetles infested four cupressaceous species, but not Abies balsamea (L.) Miller, Picea rubens Sargent, Pinus rigida, P. strobus, and Ts. canadensis in the Pinaceae. Infestation level was highest in Ch. thyoides, followed in decreasing order by Juniperus communis L., Thuja occidentalis L., and J. virginiana. In a comparison of live and dead J. virginiana, beetles developed to adults only in dead trees (36 beetles per tree). When trunk sections of Th. occidentalis with and without bark were offered to females in cages, beetles of the next generation emerged exclusively from wood with bark. In the Northeast, only species of Cupressaceae apparently are suitable hosts for C. rufipenne. Infestation of these species may be prevented or reduced by proper care of live plants and by debarking trees after harvesting.
通过在雪松诱捕原木上捕获成虫以及从各种针叶树中饲养成虫，确定了外来的雪松蛀甲虫——红翅材小蠹（Callidiellum rufipenne (Motschulsky)，鞘翅目：天牛科）在美国东北部五个州的分布情况及其寄主。在马萨诸塞州、罗德岛州、康涅狄格州、纽约州和新泽西州这些沿海州发现了这种甲虫。在这些州，成虫从柏科四个属八个种的活木或死木中羽化；松科的物种不是寄主。据报道，在其整个分布范围内，红翅材小蠹至少侵害14种柏科植物、4种松科植物和1种红豆杉科植物；但是，松科以及可能的红豆杉科的记录存疑。根据野外五项选择试验中从针叶树杆中羽化出的成虫数量，大西洋白珠树（Chamaecyparis thyoides (L.) Britton, Sterns, and Poggenburg）和维吉尼亚桧（Juniperus virginiana L.）的侵染水平显著高于刚松（Pinus rigida Miller）、北美乔松（Pinus strobus L.）和加拿大铁杉（Tsuga canadensis (L.) Carribre）（后三种未受侵染）。在野外进行的第二项寄主偏好试验中，甲虫侵害了四种柏科植物，但未侵害松科中的香脂冷杉（Abies balsamea (L.) Miller）、红云杉（Picea rubens Sargent）、刚松、北美乔松和加拿大铁杉。侵染水平在大西洋白珠树中最高，其次依次为欧洲刺柏（Juniperus communis L.）、北美香柏（Thuja occidentalis L.）和维吉尼亚桧。在对活的和死的维吉尼亚桧进行比较时，甲虫仅在死树中发育为成虫（每棵树36只甲虫）。当将有无树皮的北美香柏树干段置于笼中供雌虫选择时，下一代甲虫仅从有树皮的木材中羽化。在东北部，显然只有柏科的物种是红翅材小蠹合适的寄主。对活植物进行妥善养护以及在采伐后剥去树木的树皮，可以预防或减少这些物种受到侵染。
