Key to Jodis species of the Baikal region

1. Wings rather transparent, whitish green, with turquoise tinge (in fresh samples); transverse lines of both wings more or less straight, not jagged. Setae of sternite A3 (in males) long. In male genitalia (Figs. 33J–33L) saccus rather long, anterior part of juxta wider than posterior one; posterior projections of sternite A8 tapered, strongly spinulose. In female genitalia (Fig. 38A) ostial area with lateral sclerotization; sclerotized ductus bursae comparatively long; signum relatively large, with pair of short dents........................................................................ J. lactearia (Linnaeus, 1758)

- Wings less transparent, more yellowish green (in fresh samples); transverse lines of both wings strongly jagged. Setae of sternite A3 shorter than in J. lactearia . In male genitalia (Figs. 33M–33O) saccus shorter than in J. lactearia, anterior part of juxta almost as wide as posterior one; posterior projections of sternite A8 rounded, slightly spinulose. Female genitalia (Fig. 38B): ostial area without lateral sclerotization; antrum and ductus bursae often shorter than in J. lactearia; signum slightly smaller than in J. lactearia, with more long dents than in J. lactearia ....................... J. putata (Linnaeus, 1758)