Collettea
Creators: name: Drumm, David T.
name: Bird, Graham J.
Publisher: name: Zenodo
Year: 2016
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Malacostraca
Tanaidacea
Colletteidae
Collettea

description: Key to species of the genus Collettea
(modified after Larsen 2000, Błażewicz-Paszkowycz & Larsen 2005, and Wi et al., 2015).
1. Pereonites 1–3 subequal in length or only slightly increasing in length posteriorly................................... 2
- Pereonites 2 and 3 (or pereonite 3 only) distinctly longer than pereonite 1......................................... 5
2. Cheliped fixed finger with one ventral seta................................................................. 3
- Cheliped fixed finger with two ventral setae................................................................4
3. Pleotelson longer than three pleonites combined. Antenna article-4 with fusion line. Maxilliped endite lacking setae. Cheliped fixed finger cutting edge denticulate along entire margin.............................................. .. C. wilsoni
- Pleotelson as long as or longer than four pleonites combined. Antenna article-4 without fusion line. Maxilliped endite with two pairs of setae. Cheliped fixed finger cutting edge denticulate distally................................ C. bamberi n. sp.
4. Antenna article-4 without fusion line. Maxilliped endite with two pairs of setae............................. C. alicjae
- Antenna article-4 with distal fusion line. Maxilliped endite lacking setae............................. C. cylindratoides
5. Cheliped fixed finger with one ventral seta.................................................................6
- Cheliped fixed finger with two ventral setae...............................................................13
6. Uropod endopod one-articled................................................................ C. longipleona
- Uropod endopod two-articled............................................................................ 7
7. Uropods short (<0.3 times length of pleotelson).............................................................. 8
- Uropods long (> 0.3 times length of pleotelson)............................................................. 10
8. Cephalothorax bearing fine setules on mid-lateral margins. Antenna article-4 with fusion line................. .. C. eminula
- Cephalothorax lacking fine setules on mid-lateral margins. Antenna article-4 without fusion line....................... 9
9. Pleotelson shorter than pleonites 3–5........................................................... C. prominentia
- Pleotelson longer than pleonites 3–5................................................................ C. subtilis
10. Antenna article-4 with fusion line............................................................... C. longipedia
- Antenna article-4 without fusion line..................................................................... 11
11. Maxillipedal endite with pair of setae.............................................................. C. lilliputa
- Maxillipedal endite without setae........................................................................12
12. Pereonites 4 and 5 longer than wide............................................................ C. longisetosa
- Pereonites 4 and 5 wider than long................................................................ C. minima
13. Pleon shorter than last three pereonites............................................................ C. humbolti
- Pleon longer than last three pereonites.................................................................... 14
14. Uropod endopod one-articled.................................................................. .. C. pegmata
- Uropod endopod two-articled...........................................................................15
15. Pleotelson as long as pleonites combined length................................................. C. rotundicauda
- Pleotelson shorter or longer than pleonites combined length...................................................16
16. Uropods long (> 0.3 times length of pleotelson).............................................................17
- Uropods short (<0.3 times length of pleotelson)........................................................... 18
17. Antenna article-4 with fusion line............................................................. C. vermiformis
- Antenna article-4 without fusion line............................................................ .. C. elongata
18. Antenna article-4 with fusion line........................................................................ 19
- Antenna article-4 without fusion line..................................................................... 20
19. Pleotelson longer than combined length of all five pleonites......................................... C. larviformis
- Pleotelson shorter than combined length of all five pleonites......................................... C. cylindrata
20. Pereonites 4 and 5 longer than wide......................................................................21
- Pereonites 4 and 5 wider than long.......................................................................22
21. Cephalothorax bearing fine setules on mid-lateral margins. Pereon as long as pleon......................... .. C. aspera
- Cephalothorax lacking fine setules on mid-lateral margins. Pereon longer than pleon........... C. sp. A sensu Larsen, 2005
22. Antennule article-1 longer than last three segments combined........................................... C. arnaudi
- Antennule article-1 shorter than last three segments combined........................................ C. antarctica
description: Published as part of Drumm, David T. & Bird, Graham J., 2016, New deep-sea Paratanaoidea (Crustacea: Peracarida: Tanaidacea) from the northeastern Gulf of Mexico, pp. 389-414 in Zootaxa 4154 (4) on pages 397-398, DOI: 10.11646/zootaxa.4154.4.2, http://zenodo.org/record/260424