Agaporomorphus

Miller, Kelly B., 2005, Two new species of Agaporomorphus Zimmermann (Coleoptera: Dytiscidae) from Peru, Zootaxa 1059, pp. 49-59 : 51-52

Key to the Species of Agaporomorphus (males)

1. Male with antennomere VI conspicuously modified, expanded with distinct posteroventral emargination (Figs. 1, 2).............................................................................. 2

­ Male with antennomere VI not conspicuously modified (Fig. 3).............................. 3

2 (1). Male with antennomere V broadly triangular and flattened, antennomere VI very broad, deeply and broadly emarginate along posteroventral margin (Fig. 1); male with very prominent, carinate process medially along posterior margin of abdominal ventrite V, with corresponding peglike setae along anteroventral margin of metatibia forming apparent stridulatory device ..................................... A. knischi Zimmermann

­ Male with antennomere V moderately broad, but not triangular and flattened, antennomere VI moderately broad, with prominent emargination along posteroventral margin (Fig. 2); male with relatively small triangular process medially along posterior margin of visible abdominal ventrite V, without corresponding peglike setae along anteroventral margin of metatibia ................................ A. tambopatensis , n. sp.

3 (1). Pro­ and mesotarsal claws of male very long, subequal in length to mesotarsomere V ( Miller 2001 a: figs. 23, 24); apex of mesotarsomere V with distinct lobe ( Miller 2001 a: figs. 23–24); median lobe with very long basodorsal process ( Miller 2001 a: figs. 10, 14) ............................................................................................................... 4

­ Pro­ and mesotarsal claws 1 / 2 to 3 / 4 length of mesotarsomere V ( Miller 2001 a: figs. 20–22); apex of mesotarsomere V without lobe ( Miller 2001 a: figs. 20–22); median lobe without long process or with process short ( Miller 2001 a: figs. 1, 5, 7) ........... 5

4 (3). Median lobe in lateral aspect very robust apically ( Miller 2001 a: fig. 10); apical lobe on mesotarsomere V less than ¼length of mesotarsomere V ( Miller 2001 a: fig. 23) ...................................................................................................... A. mecolobus Miller

­ Median lobe in lateral aspect more slender apically ( Miller 2001 a: fig. 14); apical lobe on mesotarsomere V greater than ¼ length of mesotarsomere V ( Miller 2001 a: fig. 24) ................................................................................. A. dolichodactylus Miller

5 (3). Posterior claw of male mesotarsus slightly sinuate in dorsal aspect ( Miller 2001 a: fig. 27); median lobe in lateral aspect with two large dorsal convexities, a larger one medially and a smaller lobe more basally, ventrally without series of setae ( Miller 2001 a: fig. 7) ........................................................................ A. grandisinuatus Miller

­ Posterior claw of male mesotarsus not sinuate in dorsal aspect; median lobe in lateral aspect without convexities .................................................................................. 6

6 (5). Male median lobe elongate, slender, in lateral aspect with prominent, acutely pointed flanges, broad ventral lobe bearing region of ventrally­directed setae ( Miller 2001 a: fig. 5) ............................................................................................. A. pereirai Guignot

­ Male median lobe robust, strongly curved, in lateral aspect without pointed flanges, with small series of dorsally directed setae medially on each side of midline ( Fig. 17 ) .................................................................................................. A. silvaticus n. sp.

Figures

FIGURES 8 – 18. Agaporomorphus spp., male genitalia. 8 – 11 — A. knischi; 8 — right lateral lobe, right lateral aspect; 9 — median lobe, right lateral aspect; 10 — median lobe, ventral aspect; 11 — right lateral lobe, left lateral aspect. 12 – 15 — A. tambopatensis; 12 — right lateral lobe, right lateral aspect; 13 — median lobe, right lateral aspect; 14 — median lobe, ventral aspect; 15 — right lateral lobe, left lateral aspect. 16 – 18 — A. silvaticus; 16 — right lateral lobe, right lateral aspect; 17 — median lobe, right lateral aspect; 18 — median lobe, ventral aspect.