Hydroscapha Sunbeam Population

Maier, Crystal A., Ivie, Michael A., Johnson, James B. & Maddison, David R., 2010, A New Northern-Most Record for the Family Hydroscaphidae (Coleoptera: Myxophaga), with Description of a New Nearctic Species, The Coleopterists Bulletin 64 (4), pp. 289-302 : 297-300

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 .

300 THE COLEOPTERISTS BULLETIN 64(4), 2010

Figures

Fig. 19. Diversity in Hydroscapha populations in the United States: A) H. natans, Arizona, Santa Cruz Co., B) H. natans, California, Arroyo Mocho, C) H. natans, California, Alameda Co., D) Hydroscapha sp., Nevada, Amargosa Hot Springs, E) Hydroscapha sp., Idaho, Hot Creek Falls, F) Hydroscapha sp., Idaho, Sunbeam Hot Springs, G) H. redfordi, Idaho, Jerry Johnson Hot Springs, H) H. redfordi, Idaho, Weir Hot Springs.