Mycterus, OF

Pollock, Darren A., 2012, Mycterus youngi Pollock (Coleoptera: Mycteridae), a New Species from the Great Lakes Region, with a Revised Key to Species of North America, The Coleopterists Bulletin 66 (1), pp. 23-26 : 26

KEY TO THE SPECIES OF MYCTERUS OF NORTH

AMERICA (ADULTS) (revised from Pollock (1993); includes only first three couplets)

1. Specimens from eastern North America, east of 100 th meridian..........................................2

1′. Specimens from western North America, west of 100 th meridian..........................................4

2. Dorsal body surface grey-black; male antennomeres 4–10 markedly produced laterally [ Fig. 5 ]; parameres [Fig. 11] acute apically; male sex patch conspicuously setose; Atlantic states and eastern Canada.................................. ....................................... M. scaber Haldeman

2′. Dorsal surface brown, with or without contrasting silver patches; male antennomeres 4–10 only slightly produced laterally ( Fig. 3 ); parameres rounded apically ( Fig. 5 ); male sex patch lacking setae ( Fig. 4 ); Wisconsin and Florida ..................................................3

3. Dorsal surface uniformly brown, elytral vestiture without contrasting patches of silver setae; lateral pronotal margins only slightly sinuate, width across hind angles distinctly greater than width at midlength ( Fig. 1 ); known only from Wisconsin (Iowa and Wood Counties) .............. ....................... M. youngi Pollock , new species

3′. Dorsal surface brown, with contrasting patches of silver setae; lateral pronotal margins distinctly sinuate, width across hind angles only slightly greater than width at midlength ( Fig. 2 ); known only from Florida (Highlands County) ............................... M. marmoratus Pollock

Figures

Figs. 1–5. Mycterus spp. 1) M. youngi, male paratype, dorsal habitus, TL = 8.6 mm; 2) M. marmoratus, male holotype, dorsal habitus, TL = 6.5 mm; 3) M. youngi, male holotype, lateral habitus; 4) M. youngi, detail of male sex patch; 5) M. youngi, male genitalia, scale bar = 0.25 mm.