Dulichiella Stout, 1912

Choi, Jae-Hong, Kim, Kyung-Won & Kim, Young-Hyo, 2025, A new species of the genus Dulichiella (Crustacea, Amphipoda, Melitidae) from the continental shelf of the Southern Sea, Korea, with comparison to the previously recorded D. appendiculata, Zootaxa 5696 (1), pp. 102-112 : 103-111

Genus Dulichiella Stout, 1912

(Korean name: Jjag-son-mel-li-ta-yeop-sae-u-sok, new)

Key to the species of Dulichiella group with three teeth on the distolateral crown of the propodus of gnathopod 2 (modified from Cummings et al. 2021)

1. Gnathopod 1, anterior margin of coxa straight.............................................................. 2

- Gnathopod 1, anterior margin of coxa convex or concave...................................................... 6

2. Cephalic lobe with apicoventral seta; epimeral plate 3, posterior margin smooth................................... 3

- Cephalic lobe without seta; epimeral plate 3, posterior margin serrate ·........ · D. terminus Lowry & Springthorpe, 2007

3. Cephalic lobe with one apicoventral seta................................................................... 4

- Cephalic lobe with two apicoventral setae................................................................. 5

4. Antenna 1, accessory flagellum 5-articulate; antenna 2, gland cone reaching the end of peduncular article 3; gnathopod 2, palmar corner upturned; pleonite 1 – urosomite 3 with 7-7-7-5-6-2 dorsal tooth formula........... D. beluu Mayers, 2016

- Antenna 1, accessory flagellum 6-articulate; antenna 2, gland cone not reaching the end of peduncular article 3; gnathopod 2, palmar corner straight; pleonite 1 – urosomite 3 with 9-9-9-5-4-2 dorsal tooth formula............ D. spinosa Stout, 1912

5. Antenna 1, peduncular article 1 with two ventral robust setae; gnathopod 2, palmar corner straight; pereopods 3–7, dactyli with two accessory teeth ·................................................... D. ohau Lowry & Springthorpe, 2007

- Antenna 1, peduncular article 1 with four ventral robust setae; gnathopod 2, palmar corner upturned; pereopods 3–7, dactyli with one accessory tooth............................................. D. australis Lowry & Springthorpe, 2007

6. Cephalic lobe with apicoventral seta; gnathopod 1, coxa anterior margin concave; gnathopod 2, palmar corner upturned.... 7

- Cephalic lobe without seta; gnathopod 1, coxa anterior margin convex; gnathopod 2, palmar corner straight................................................................................. D. tulear Lowry & Springthorpe, 2007

7. Cephalic lobe with one apicoventral seta; antenna 1, peduncular article 1 with three ventral robust setae; antenna 2, gland cone not reaching the end of peduncular article 3; pleonite 1 – urosomite 3 with 9-9-9-5-6-2 dorsal tooth formula........................................................................................... D. anisochir (Krøyer, 1845)

- Cephalic lobe with two apicoventral setae; antenna 1, peduncular article 1 with two ventral robust setae; antenna 2, gland cone reaching the end of peduncular article 3; pleonite 1 – urosomite 3 with 7-7-7-5-4-2 dorsal tooth formula D. tridentata sp. nov.