Figs. 2–9. Hoperius planatus, first instar. 2 in A Description of the First Instar of Hoperius planatus Fall, 1927 (Coleoptera: Dytiscidae: Colymbetinae: Colymbetini), with Phylogenetic Implications

Figs. 2–9. Hoperius planatus, first instar. 2) Cranium, dorsal view; 3) Cranium, ventral view; 4) Right antenna, dorsum; 5) Left antenna, venter; 6) Antennomere 3, distal aspect; 7) Right mandible, dorsum; 8) Maxilla and labium, venter; 9) Prementum, dorsal view. Abbreviations: A3′ = ventrolateral apical process of antennomere 3; EB = egg burster; FR frontoclypeus; LA = labium; LM = labrum; MX = maxilla; PA = parietal; Sp = spinula; TP = posterior tentorial pit. Solid squares refer to additional setae; solid triangles refer to additional pores.