Platorchestiinae Lowry & Myers 2022
Creators: name: Lowry, J. K.
name: Myers, A. A.
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Malacostraca
Amphipoda
Talitridae

description: Key to genera of Platorchestiinae (Adult Males)
1. Gnathopod 1 dactylus cuspidactylate...................................................................... 2
- Gnathopod 1 dactylus simplidactylate..................................................................... 3
2. Uropod 1 peduncle with distolateral robust seta absent.............................................. Platorchestia
- Uropod 1 peduncle with distolateral robust seta present............................................. Tethorchestia
3. Antenna 2 distinctly incrassate........................................................................... 4
- Antenna 2 slender or only slightly incrassate................................................................ 7
4. Uropod 1 endopod with marginal setae in one row........................................................... 5
- Uropod 1 endopod with marginal setae in two rows.......................................................... 6
5. Gnathopod 1, 2 propodus palm transverse................................................. Cocorchestia gen. nov.
- Gnathopod 1, 2 propodus palm acute......................................................... Mauritiorchestia
6. Gnathopod 2 propodus palm rounded distally or sigmoidal................................. Demaorchestia gen.nov.
- Gnathopod 2 propodus palm evenly rounded............................................. Insularorchestia gen. nov.
7. Pereopod 4 dactylus thickened proximally, with notch midway along posterior margin................................8
- Pereopod 4 dactylus not thickened proximally nor with notch on posterior margin.................................. 10
8. Pereopod 7 propodus without distal tuft of setae............................................................. 9
- Pereopod 7 propodus with distal tuft of setae..................................................... Mexorchestia
9 Uropod 1 endopod with marginal robust setae in two rows............................................ Miyamotoia
- Uropod 1 endopod with marginal robust setae in one row............................................... Chroestia
10. Gnathopod 2 dactylus blunt distally...................................................................... 11
- Gnathopod 2 dactylus attenuated or acute distally........................................................... 12
11. Gnathopod 2 propodus palm transverse......................................................... Cariborchestia
- Gnathopod 2 propodus palm acute.............................................................. Pickorchestia
12 Uropod 1 peduncle, distolateral robust seta present.......................................................... 13
- Uropod 1 peduncle, distolateral robust seta absent.......................................................... 14
13. Pereopod 6 incrassate......................................................................... Vallorchestia
- Pereopod 6 not incrassate.................................................................... Yamatorchestia
14 Telson rounded distally, maxillipedal palp slender................................................ Laniporchestia
- Telson tapering distally, maxillipedal palp broad....................................................... Morinoia
description: Published as part of Lowry, J. K. & Myers, A. A., 2022, Platorchestiinae subfam. nov. (Amphipoda, Senticaudata, Talitridae) with the description of three new genera and four new species, pp. 1-53 in Zootaxa 5100 (1) on page 47, DOI: 10.11646/zootaxa.5100.1.1, http://zenodo.org/record/6127681