FIGURES 20–21 in Notation of primary setae and pores on larvae of Dytiscinae (Coleoptera: Dytiscidae), with phylogenetic considerations

FIGURES 20–21. Distribution of ancestral setae and pores on ventral surface of head capsule of first instar of selected species of Dytiscinae; (20) Dytiscus harrisii; (21) Hyderodes shuckardi; PA, parietale; TP, tentorial pits; numbers and lowercase letters refer to primary setae and pores, respectively (see Table 2 for list of setae and pores).