Williams Kirstin A, Villet Martin H
Entomology Department, Durban Natural Science Museum, Durban, South Africa.
Southern African Forensic Entomology Research Laboratory, Department of Zoology and Entomology, Rhodes University, Grahamstown, 6140 South Africa.
Zookeys. 2014 Jun 25(420):69-85. doi: 10.3897/zookeys.420.7645. eCollection 2014.
Hybrids of Lucilia sericata and Lucilia cuprina have been shown to exist in previous studies using molecular methods, but no study has shown explicitly that these hybrids can be identified morphologically. Published morphological characters used to identify L. sericata and L. cuprina were reviewed, and then scored and tested using specimens of both species and known hybrids. Ordination by multi-dimensional scaling indicated that the species were separable, and that hybrids resembled L. cuprina, whatever their origin. Discriminant function analysis of the characters successfully separated the specimens into three unambiguous groups - L. sericata, L. cuprina and hybrids. The hybrids were morphologically similar irrespective of whether they were from an ancient introgressed lineage or more modern. This is the first evidence that hybrids of these two species can be identified from their morphology. The usefulness of the morphological characters is also discussed and photographs of several characters are included to facilitate their assessment.
在之前使用分子方法的研究中已表明丝光绿蝇（Lucilia sericata）和铜绿蝇（Lucilia cuprina）之间存在杂交种，但尚无研究明确表明这些杂交种可通过形态学方法识别。对用于识别丝光绿蝇和铜绿蝇的已发表形态特征进行了综述，然后使用这两个物种以及已知杂交种的标本进行评分和测试。多维标度排序表明这两个物种是可区分的，并且无论杂交种的来源如何，它们都与铜绿蝇相似。对这些特征进行判别函数分析成功地将标本分为三个明确的组——丝光绿蝇、铜绿蝇和杂交种。无论杂交种来自古老的渐渗谱系还是更现代的谱系，它们在形态上都相似。这是首次有证据表明这两个物种的杂交种可通过形态学识别。还讨论了形态特征的实用性，并包含了几个特征的照片以方便评估。
