Agriculture Canada Research Station, T1J 4B1, Lethbridge, Alberta, Canada.
J Chem Ecol. 1990 Oct;16(10):2969-80. doi: 10.1007/BF00979488.
The dingy cutworm is one of the more common and widely distributed of North American noctuids. Determination of the antennal responses of field-collected male moths to a standard test blend of pheromone components shows that two pheromonal phenotypes of the dingy cutworm occur throughout the prairie region of western Canada and at least two others occur in eastern Canada. The pheromone types are morphologically indistinguishable and, so far as is known, have similar life histories and biology. The two prairie types are broadly sympatric with partially overlapping seasonal flight periods. Although hybrids can be easily produced in the laboratory, there is no evidence of hybridization in the field. The pheromone system of the dingy cutworm is apparently rather plastic, resulting in a mosaic of pheromone types (sibling species) that appear to be reproductively isolated but have not differentiated morphologically.
污灯蛾是北美夜蛾科中较为常见且分布广泛的一种。对野外采集的雄性蛾触角对标准信息素混合物的反应的测定表明，污灯蛾在加拿大西部草原地区存在两种信息素表型，至少在加拿大东部还存在另外两种信息素表型。这些信息素类型在形态上无法区分，据目前所知，它们具有相似的生活史和生物学特性。这两种草原类型广泛共存，季节性飞行期部分重叠。尽管在实验室中可以很容易地产生杂交种，但在野外没有杂交的证据。污灯蛾的信息素系统显然相当具有可塑性，导致信息素类型（姊妹种）形成马赛克，这些信息素类型似乎在繁殖上是隔离的，但在形态上没有分化。
