Fig. 1

The external body structure of Srokalarva berthei. a and b are the part of specimen MCP-322; (c) and (d) are the counterpart to MCP-322, representing approximate mirror images of each other. a and d, Red–cyan stereo anaglyphs imaged under cross-polarized light. (For best visual results, use red–cyan glasses for viewing.) (b) and (c), Interpretative versions of (a) and (d), respectively. Colors delimit regions of the head, tergites, thoracic membranous regions, and appendages such as mouthparts, thoracic legs and abdominal prolegs. Arrows indicate abbreviated appendages on abdominal segment 9. Note that the proximal regions of the appendages are concealed under the body, and are not clearly marked. Abbreviations: aa, abdominal appendages; a1–a9, abdominal segments 1 to 9; hc, head capsule; ta, thoracic appendages; tt, trunk tergites