Desdimelita Jarrett &Bousfield, 1996

Labay, Vjacheslav S., 2022, Desdimelita spicatimanus a new species of Melitidae Bousfield, 1973 (Crustacea: Amphipoda: Hadziida) from the Sea of Okhotsk, Zootaxa 5169 (4), pp. 347-358 : 357-358

Key to species of genus Desdimelita Jarrett &Bousfield, 1996

1. Eyes small, 1/10 or smaller of head height Desdimelita microphthalma Jarrett & Bousfield, 1996

- Eyes medium, 1/3–1/6 of head height..................................................................... 2

2. Urosome 1 without postero-dorsal tooth (teeth).............................................................. 3

- Urosome 1 with postero-dorsal tooth (teeth)................................................................ 4

3. Uropod 3, article 2 of outer ramus very short (nearly 1/20 of article 1 length), margins of article 1 with 6–7 groups of robust setae.......................................................... Desdimelita barnardi Jarrett & Bousfield, 1996

- Uropod 3, article 2 of outer ramus relatively long (1/7–1/9 of article 1 length), margins of article 1 with 3–4 groups of robust setae........................................................ Desdimelita transmelita Jarrett & Bousfield, 1996

4. Urosome 1 with 3 or 5 postero-dorsal teeth.................................................................................................................................... Desdimelita californica ( Alderman, 1936)

- Urosome 1 with single postero-dorsal tooth................................................................. 5

5. Telson lobes with 0–1 long apical robust setae; pereopods 3–7, dactylus short (<¼ of segment 6 length)............................................................................ Desdimelita microdentata Jarrett & Bousfield, 1996

- Telson lobes with 2 long apical robust setae; pereopods 3–7 dactylus medium or long (>¼ of segment 6 length).......... 6

6. Pereopod 2 (gnathopod 2) palm of propodus long, with a row of 5–6 rare long strong robust setae; dactylus of pereopods 3–7 long (0.4–0.7 of article 6 length)............................................ Desdimelita (?) spicatimanus sp. nov.

- Pereopod 2 (gnathopod 2), palm of propodus short, without a row of long strong robust setae; dactylus of pereopods 3–7 medium (1/4–1/3 of segment 6 length).................................... Desdimelita desdichada (J.L. Barnard, 1962)