Mimonecteola

Key to the species of the genus Mimonecteola

1. Pereopods 5–7 simple, dactyl not retractile................................................................. 2

- Pereopod 5 weakly subchelate with dactyl closing against propodus. Pereopod 7 with partly retractile dactyl............. 6

2. Pereopod 5; propodus not narrowing distally with tuft of 3–4 setae near anterodistal corner........................... 3

- Pereopod 5; propodus narrows evenly distally, without tuft of setae as above...................................... 4

3. Pereopods 4 & 5 similar in length; with P6 marginally longer.............................. M. carlsbergi Zeidler, 2009

- Pereopods 5 & 6 (especially P5) distinctly shorter than P4.................................... M. antarctica sp. nov.

4. Pereopod 5 distinctly longer than P4. Telson length about 0.7 x, or more, peduncle of U3........ M. beebei Shoemaker, 1945

- Pereopod 5 distinctly shorter than P4. Telson length about 0.5 x, or less, peduncle of U3............................. 5

5. Pereopods 3–7; dactyl very short, about 0.2 x, or less, length propodus................... M. diomedeae Woltereck, 1909

- Pereopods 3–7; dactyl relatively long, about 0.4–0.5 x length propodus..................... M. macronyx Barnard, 1932

6. Pereopod 5; propodus with long, strong setae along posterior margin, forming weak subchela with dactyl; dactyl length about half propodus. Pereopod 7 with relatively long, almost straight, partly retractile dactyl...... M. subchelata Vinogradov, 1964

- Pereopod 5; propodus with few short setae posteriorly, forming barely perceptible subchela with dactyl; dactyl length much less than half propodus. Pereopod 7 with short, curved, partly retractile dactyl, forming weak subchela with propodus...................................................................................... M. mixta Vinogradov, 1964