Sorokina Vera S, Ovtshinnikova Olga G
Institute of Systematics and Ecology of Animals, Siberian Branch of the Russian Academy of Sciences, 630091 Novosibirsk, Russia.
Department of Invertebrate Zoology, Biological Institute, Tomsk State University, 634050 Tomsk, Russia.
Insects. 2022 Feb 18;13(2):210. doi: 10.3390/insects13020210.
The abdominal and pregenital segments and the genitalia were studied in males of (Zetterstedt, 1845), (Linnaeus, 1761) and (Zetterstedt, 1838). In comparison with the remaining members of the muscoid grade, in addition to the symmetry of the pregenital segments, significant reductions of the sclerites and musculature of the male terminalia have been observed in Fanniidae. The muscular structure of pregenital segments confirms that the fused pregenital ring is syntergosternite VI + VII + VIII. Symmetry and fusion, as well as the lower number of the sclerites and muscles of the pregenital segments and male genitalia of the Fanniidae, can be considered apomorphic character states. The presence of the lateral bacilliform sclerite, as well as the presence and position of the epandrial muscles M 26, three pairs of muscles M 19 and paired muscles M 18, can be considered as a plesiomorphic character state of the Fanniidae. The structure of the sclerites and muscles of the male abdominal segments and terminalia place the Fanniidae at the base of the muscoid grade and Oestroidea, as has been confirmed by recent molecular studies.
对（泽特施泰特，1845年）、（林奈，1761年）和（泽特施泰特，1838年）雄性的腹部、生殖器前节段和生殖器进行了研究。与蝇类等级的其他成员相比，除了生殖器前节段的对称性外，在厕蝇科中还观察到雄性外生殖器的骨片和肌肉组织有显著减少。生殖器前节段的肌肉结构证实，融合的生殖器前环是腹板间骨片VI + VII + VIII。厕蝇科生殖器前节段和雄性生殖器的对称性、融合以及骨片和肌肉数量较少，可以被认为是近裔性状状态。侧杆状骨片的存在，以及尾上叶肌肉M 26的存在和位置、三对肌肉M 19和成对肌肉M 18，可以被认为是厕蝇科的祖征性状状态。雄性腹部节段和外生殖器的骨片和肌肉结构将厕蝇科置于蝇类等级和狂蝇总科的基部，这一点已得到最近分子研究的证实。
