Leucothoe Leach 1814
Key for Antarctic and sub-Antarctic Leucothoe -species: 1. Cx 2 and Cx 4 anterodistally with acute angle [eyes yellowish]. L. merletta sp. nov. (2.5 mm, depth range unknown) – Coxae anterodistally never acutely pointed. 2 2. P 5-7 basis ratio l:w clearly> 2, proximally widest. L. longimembris sp....
| Main Authors: | , |
|---|---|
| Format: | Other/Unknown Material |
| Language: | unknown |
| Published: |
2014
|
| Subjects: | |
| Online Access: | https://zenodo.org/record/3861073 https://doi.org/10.5281/zenodo.3861073 |
| Summary: | Key for Antarctic and sub-Antarctic Leucothoe -species: 1. Cx 2 and Cx 4 anterodistally with acute angle [eyes yellowish]. L. merletta sp. nov. (2.5 mm, depth range unknown) – Coxae anterodistally never acutely pointed. 2 2. P 5-7 basis ratio l:w clearly> 2, proximally widest. L. longimembris sp. nov. (15 mm, depth: 1030 m) – Basis P 5-7 ratio l:w <2, medially widest. 3 3. Gn 1 propodus and carpus distally very narrow and elongate, propodus ratio l:w> 5, dactylus ≤ 1/3 of propodus length; Gn 2 propodus with palmar corner; peraeopod dactyli> 1/2 length of propodus; Ep 2 posterodistally acutely lengthened [eyes small, compact and dark red]. L. orkneyi Holman & Watling, 1983 (4-9 mm, depth-range 11-1584 m) – Gn 1 propodus ratio l:w ≤ 5, dactylus ≥ 1/3 of propodus-length, Gn 2 propodus without palmar corner; peraeopod dactyli ≤ 1/2 length of propodus. 4 4. Gn 1 propodus robust, ratio l:w = 3.0-3.5. [Cx 3 narrow with nearly parallel margins; P 5-7 basis ovoid, hind margin in P 7 scarcely serrate, Ep 3 posterodistal corner minutely lengthened, posterior margin excavate]. L. macquariae sp. nov. (6-10 mm, depth-range 5-111 m) – Gn 1 propodus ratio l:w more than 3.5. 5 5. Gn 2 dactylus very long, reaching up to about 2/3 of propodus length; Gn 1 propodus ratio l:w = 5; Ep 3 posterodistal corner rectangular. L. campbelli sp. nov. (5-7 mm, depth-range 10-25 m) – Gn 2 dactylus about half length of propodus or little more. 6 6. P 7 basis regularly rounded, ratio length to width about 1.3. Eyes large, ommatidia separated. L antarctica Pfeffer, 1888 (4-9 mm, depth-range 24-335 m, doubtful material from 1584 m) – P 7 basis ratio length to width about 1.7. Eyes large, ommatidia fused. L. weddellensis sp. nov. (10-24 mm, depth range 9-602 m) Published as part of Krapp-Schickel, Traudl & Broyer, Claude De, 2014, Revision of Leucothoe (Amphipoda, Crustacea) from the Southern Ocean: a cosmopolitanism concept is vanishing, pp. 1-55 in European Journal of Taxonomy 80 on page 4, DOI:10.5852/ejt.2014.80, ... |
|---|