Fig. 5 in A general theory of genital homologies for the Hexapoda (Pancrustacea) derived from skeletomuscular correspondences, with emphasis on the Endopterygota

Fig. 5. Genital skeletomusculature of Sialis nevadensis (Megaloptera: Sialidae). AeD, genitalia and postgenital segments: A, dorsal; B, lateral; C, ventral; D, lateral oblique, genitalia rotated. E, penial sclerite, lateropenites, and cerci, lateral oblique. F, sternum, mesal. G, penial sclerite and lateropenites. H, I, genitalia and tergum IX with parts of second coxites and left stylus removed,mesal oblique.Abbreviations: An ¼ anus; Cace ¼ callus cercus; Ce ¼ cercus; Cxa ¼ gonocoxa (fused with tergum IX); Cxt ¼ gonocoxite (fused with stylus); Cxt þ Sty ¼ coxostylar composite sclerite; Lpe ¼ lateropenite; Pen ¼ penial sclerite; Phtr ¼ phallotreme; Prct ¼ proctiger; Sacd ¼ dorsal genital sac; Sacm ¼ median genital sac; Sacv ¼ ventral genital sac; StIX ¼ sternum IX; Sty ¼ gonostylus (fused with gonocoxite); TgIX ¼ tergum IX (fused with gonocoxae) TgIX þ Cxa ¼ tergocoxal composite sclerite; Vcl ¼ ventral coxital lobe. Muscle abbreviations indicated in Table 1.