Ephemera species

Key to Korean Ephemera species

Mature larvae

1. Abdominal terga VII- IX with paired multi-striped markings ( Fig. 4A, 4B View Fig )················································ 2

- Abdominal terga VII- IX with paired single-striped markings ( Fig. 4C, 4D View Fig ) ················································ 3

2. Mesonotum yellowish pale with a continuous pair of dark stripes ( Fig. 2A, 2C, 2E). Segments I- II of tergum with a dark pigment covering all or most of the segment ( Fig. 3A View Fig ). Fore claw pointed and elongated; posterior margin of tergum X trapezoid-shaped and pronounced ( Fig. 3E View Fig ) ··················································· E. orientalis View in CoL

- Mesonotum pale with narrow discontinued pair of stripes becoming narrower at base ( Fig. 3B View Fig ). Segments I- II of tergum without dark pigment ( Fig. 3B View Fig ). Fore claws not elongated ( Fig. 4J View Fig ); posterior margin of tergum X almost square and not pronounced ( Fig. 4F View Fig ) ····· E. sachalinensis View in CoL

3. Lateral dark bars of terga VII- IX narrow and only at borders, not reaching the median area of segments ( Fig. 4C View Fig ). Posterior margin of tergum X rounded ( Fig. 4G View Fig ) ··· ································································· E. separigata

- Lateral dark bars of terga VII- IX thick and reaching median area of segments terminally ( Fig. 4D View Fig ). Posterior margin of tergum X angled ( Fig. 4H View Fig )············ E. strigata