Revision of the genus Georissus (Coleoptera, Hydrophiloidea, Georissidae) of Japan Author Yasuda, Kohei C660A24E-D4D7-4985-951F-A4093FFBEE57 Entomological Laboratory, Faculty of Agriculture, Ehime University, Tarumi 3 - 5 - 7, Matsuyama, 790 - 8566 Japan. koheizari303@gmail.com Author Yoshitomi, Hiroyuki 744FA6FC-2D84-41B7-8A6C-C1611CC68EE1 Entomological Laboratory, Faculty of Agriculture, Ehime University, Tarumi 3 - 5 - 7, Matsuyama, 790 - 8566 Japan. hymushi@agr.ehime-u.ac.jp text European Journal of Taxonomy 2022 2022-05-03 817 1 111 142 http://dx.doi.org/10.5852/ejt.2022.817.1767 journal article 55730 10.5852/ejt.2022.817.1767 529dc516-47b9-424e-93ac-3787e407e100 2118-9773 6517928 FFB05CE7-3712-4FD0-91B4-FD84863CF9D7

Table 1. Measurements of Georissus (G.) spp. and G. (Nipponogeorissus) granulosus Satô, 1972.

	G. (G.) canalifer (N = 53)	G. (G.) babai (N = 20)	G. (Ni.) granulosus (N = 5)
TL (mm)	1.46–2.30 (1.91)	1.34–1.90 (1.91)	1.28–1.54 (1.38)
EL (mm)	0.86–1.62 (1.27)	0.82–1.26 (1.09)	0.86–1.02 (0.92)
EW (mm)	0.90–1.38 (1.17)	0.82–1.16 (1.05)	0.70–0.88 (0.79)
PL (mm)	0.52–0.78 (0.64)	0.52–0.66 (0.60)	0.40–0.52 (0.46)
PW (mm)	0.70–1.04 (0.85)	0.68–0.88 (0.79)	0.52–0.62 (0.58)
PW/PL	1.08–1.66 (1.33)	1.15–1.41 (1.32)	1.15–1.35 (1.26)
EL/EW	0.86–1.23 (1.08)	0.83–1.24 (1.03)	1.05–1.26 (1.16)
EL/PL	1.43–2.48 (1.98)	1.58–2.07 (1.82)	1.87–2.20 (2.00)
EW/PW	1.10–1.56 (1.38)	1.21–1.53 (1.33)	1.28–1.47 (1.37)
TL/EW	1.45–1.84 (1.64)	1.34–1.86 (1.60)	1.57–1.83 (1.74)