CLADOENDESIS OF EPHEMEROPTERA
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Fig. 229–235. Ceylonula femoralis, larva. 229 – left mandible; 230–235 – apices of left and right mandibles, compressed; 232 – anterior margin of labrum; 233 – margin of labrum, anterior view; 234 – proximal-lateral margin of labrum; 235 – cuticle of head of female larva. Abbreviations: anter.r – anterior transverse setal row; c.md.a and c.md.p – anterior and posterior mandibular condyles visible on ventral side of head through cuticle; cd – kinetodontium; dent – denticles; d.t – distal tuft of setae; in – incision laterad of posterior mandibular condyle; in-a and in-p – convexities anteriad and posteriad of incision; inc – incisor; m.t – middle tuft of setae; poster.r – posterior transverse setal row; prs – prostheca; v-a.s – ventro-anterior strip of setae.