Megatoma (Pseudohadrotoma)

Háva, Jiří & Brown, Robert, 2015, A New Record ofMegatoma (Pseudohadrotoma) Graeseri (Reitter, 1887) (Coleoptera: Dermestidae: Megatominae) from Wisconsin, USA, The Coleopterists Bulletin 69 (4), pp. 828-829 : 828-829

KEY TO THE SPECIES OF PSEUDOHADROTOMA

KALÍK IN THE USA

A. Antennal club consisting of three antennomeres .................. subgenus Megatoma s. str. B. Antennal club consisting of two antennomeres ................subgenus Pseudohadrotoma

1. Median ocellus absent or present, integument unicolorous, pubescence of dorsal surface subrecumbent, bicolorous .............................. .................................. M. kaliki (Beal, 1967)

1′. Median ocellus present ................................ 2

2. Pubescence of terminal antennomere of male long.............. M. trichorhopalum Beal, 1967

2′. Pubescence of terminal antennomere of male short.....................................................3

3. Integument bicolorous, each elytron with 2 r e d d i s h o r a n g e s p o t s; p u b e s c e n c e bicolorous ....... M. graeseri (Reitter, 1887)

3′. Integument unicolorous................................ 4

4. Pubescence on dorsal surface unicolorous, dark brown ........... M. perversa (Fall, 1926)

4′. Pubescence on dorsal surface consisting of dark setation and light golden brown and white setation ...............................................5

5. Light-colored setation of elytron forming a thin, sometimes interrupted circle or loop at basal margin, a narrow interrupted submedian band, and a narrow subapical band; pubescence of basal circle not forming dense cluster of whitish setation on posterior part.............. ..................... M. trogodermoides Beal, 1967

5′. Light-colored setation of elytron forming circle or loop at basal margin but with posterior half of loop consisting of dense patches of pale setation with prominent patch of white setation near median line; subapical band moderately broad and consisting of dense patches of golden brown and white setation; submedian band very broad and diffuse.................. .................................. M. falsa (Horn, 1875)