The sting apparatus of aculeate Hymenoptera is derived from the ovipositor and is their most prominent apomorphy. In contrast to the frequently analysed sclerites of the sting apparatus, the associated musculature has largely been neglected. In this study, we use micro-computed tomography to present a detailed description of the musculature of the sting apparatus of Ampulex compressa (Ampulicidae) and Sceliphron destillatorium (Sphecidae). We found that 12 of 15 muscles corresponding to the sting apparatus are homologous between both species examined and 13 muscles in comparison with Hymenoptera described in the literature. All muscles identified as critical for the act of stinging were found in both species. Moreover, we found the ventral tergum 8-tergum 9 muscle and the tergum 8-tergum 8 muscles in A. compressa and the second valvifer-second valvifer muscle in S. destillatorium. For the first time, we describe the ventral tergum 8-tergum 9 muscle and the second valvifer-second valvifer muscle that interconnects both body sides, in Hymenoptera.

中文翻译：

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pu虫（膜翅目，Am科）和Sc骨still（膜翅目，S科）的the具的肌肉组织的比较形态

针形膜翅目的st刺设备来自产卵器，是它们最显着的阿朴形。与经常分析的ing具相比，相关的肌肉组织在很大程度上被忽略了。在这项研究中，我们使用微型计算机断层摄影术来详细描述安瓿（Ampulex compressa）（Sc科）和ing骨the（Sphecidae）的ing具的肌肉组织。与文献中描述的膜翅目昆虫相比，我们发现对应于刺痛装置的15条肌肉中有12条与被检查物种之间的同源性与13条肌肉相同。在这两个物种中都发现了所有被认为对刺激行为至关重要的肌肉。此外，我们在A中发现了腹侧8端9肌肉和8端8端肌肉。压缩链球菌和第二瓣膜-第二瓣膜肌 第一次，我们在膜翅目中描述了腹侧8端9精子肌和第二个valvifer-second valvifer肌，它们将身体两侧相互连接。