Xenochodaeus Paulsen, 2007

Paulsen, M. J., 2007, Nomenclatural changes in the Nearctic Ochodaeinae and description of two new genera (Coleoptera: Scarabaeoidea: Ochodaeidae), Insecta Mundi 2007 (21), pp. 1-13 : 3

Xenochodaeus Paulsen , new genus

( Fig. 3 , 6-14 )

Figures

Figure 1-4. Propygidia of Nearctic Ochodaeinae genera. Scale bars = 0.5 mm. 1) Unmodified propygidium of Cucochodaeus sparsus, with elytral apices evenly rounded. 2) Two tubercles present on apex of propygidium in Parochodaeus duplex, dentate elytral apices also shown. 3) Elongate propygidium with subparallel sulcus in Xenochodaeus simplex. 4) Short propygidium with trapezoidal sulcus in Neochodaeus praesidii, arrow indicates stridulatory peg.

Figure 5-6. Mentum (center) of Neochodaeus sp. and Xenochodaeus sp. Scale bar = 200 m. 5) More or less flat mentum of N. praesidii. 6) Longitudinally impressed mentum of X. americanus.

Figure 7-8. SEM of pronotum behind anterior angle showing surface structure. Scale bar = 100 m. 7) Xenochodaeus americanus, with tubercles present anterior to each setiferous puncture. 8) Xenochodaeus musculus, surface with setiferous punctures only.

Figure 9-10. Dentition of male hindleg in Xenochodaeus spp. formerly treated as O. musculus. Scale bar = 0.5 mm. 9) Xenochodaeus americanus with metafemur lacking tooth at apex and metatibia dilated before apex. 10) Xenochodaeus musculus with metafemur with strong apical tooth, metatibia with strong tooth at middle.

Figure 11-14. Dentition of male hindleg in Xenochodaeus spp. Scale bar = 1 mm. 11) Xenochodaeus simplex, metatibia weakly dentate. 12) Xenochodaeus ulkei, metatibia subdentate. 13) Xenochodaeus luscinus, metatibia dentate. 14) Xenochodaeus planifrons, metatibia dentate, arrow indicates toothed apex of metafemur.