A New Northern-Most Record for the Family Hydroscaphidae (Coleoptera: Myxophaga), with Description of a New Nearctic Species Author Maier, Crystal A. Author Ivie, Michael A. Author Johnson, James B. Author Maddison, David R. text The Coleopterists Bulletin 2010 2010-12-31 64 4 289 302 http://dx.doi.org/10.1649/0010-065x-64.4.289 journal article 10.1649/0010-065x-64.4.289 1938-4394 10102286 Hydroscapha Sunbeam Population Material Examined. IDAHO : Custer Co. ; Sunbeam Hot Springs ; 1.5 mi. W Sunbeam ; 15 OCT 1987 ; J.B. Johnson (11 WFBM ); 13 AUG 1987 (2 JBJC ); 11 JULY 1999 (3 JBJC ) . Specimens from the Sunbeam Hot Springs population ( Fig. 19F ) can be distinguished from all other populations of Hydroscapha examined by the combination of the narrow (almost triangular) shape of the tentorial bridge, the disc of the mesoventrite with distance between (rounded) lateral points equal to overall length,andthesmallestwingsofallIdaho Hydroscapha . Fig. 20. Sequences of a portion of the COI gene from three specimens of Hydroscapha natans and three of Hydroscapha redfordi . The first sequence is given in full; for later sequences, only those bases that differ from that in the first sequence are shown. If a sequence has the same base as that of the first sequence, a period (“.”) is shown. Gray shaded bases are those with fixed differences between H. natans and H. redfordi ; the three larger, open rectangles show those codons for which H. natans has a different amino acid from H. redfordi . 300 THE COLEOPTERISTS BULLETIN 64(4), 2010