Kemponia Bruce, 2004, gen. nov.
Creators: name: Bruce, A. J.
Publisher: name: Zenodo
Year: 2004
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Malacostraca
Decapoda
Palaemonidae
Kemponia

description: Key to the species of Kemponia gen. nov.
1. Merus of second pereiopod with distoventral tooth ...................................................... 2
­ Merus of second pereiopod unarmed .......................................................................... 15
2. Supraorbital spines present............................................................................................ 3
­ Supraorbital spines absent........................................................................................... 11
3. Distal tooth of scaphocerite distinctly exceeding lamella ............................................. 4
­ Distal tooth of scaphocerite not, or scarcely, exceeding lamella; R. 1+6­8/1­3.............. ........................................................................................................... K. demani (Kemp)
4. Rostrum shallow, ambulatory pereiopods long and slender, fifth exceeding scaphocerite ....................................................................................................................................... 5
­ Rostrum moderately deep, ambulatory pereiopods relatively stout, fifth not exceeding scaphocerite.................................................................................................................8
5. Carpus of second pereiopod with conspicuous tooth on inner side .............................. 6
­ Carpus of second pereiopod without conspicuous tooth on inner margin .................... 7
6. Carpus of male second pereiopod subequal to or shorter than merus, carpus with dis­ tomedial tooth; R. 1+6­8/2­4................................................ K. andamanensis (Kemp)
­ Carpus of male second pereiopod conspicuously longer than merus, carpus without distomedial tooth; R. 1+5­6/2 ........................................ K. suvadivensis (Borradaile)
7. Carpus of first pereiopod at least 1.75 times chela length; male second pereiopod with chela not more than 1.25 of carpal length; in females subequal to chela or slightly shorter; R.1+6­8/2­3............................................................................ K. agag (Kemp)
­ First pereiopod carpus less than 1.5 of chela length; chela of second pereiopod more than 1.3 times carpus length in both sexes; R. 1+5­6/2­3. K. longirostris (Borradaile)
8. Distal margin of second pereiopod carpus with 1–2 acute teeth ................................... 9
­ Distal margin of second pereiopod carpus without acute teeth; R. 7­8/3........................ ...................................................................................................... K. ensifrons (Dana)
9. Carpus of second pereiopod with two acute distal teeth ............................................. 10
­ Carpus of second pereiopod with single distomedial tooth only; R. 1+5­9/2­5.............. .................................................................................................... K. grandis (Stimpson)
10. Ambulatory pereiopods with propods strongly spinulate; chela of second pereiopod (male only?) finely tuberculate; R. 1+5­7/2­3.............................. K. elegans (Paulson)
­ Ambulatory pereiopods with propods with small distoventral spine only; chelae of second pereiopods not tuberculate; R. 1+ 6­7/3...................... K. amymone (De Man)
11. Rostrum greatly exceeding scaphocerite..................................................................... 12
­ Rostrum subequal to scaphocerite............................................................................... 13
12. Second pereiopods with ischium distoventrally unarmed, rostrum sinuous, upcurved, ambulator y propods segmented, non­spinulate; R. 1­8­11 /6­9 ........................................ ............................................................................................... K. tenuipes (Borradaile)
­ Second pereiopods with strong distoventral ischial tooth, rostrum straight, horizontal, ambulatory propods not segmented, spinulate; R.1+10/6 .............. K. lacertae (Bruce)
13. Second to fourth dorsal rostral teeth enlarged and grouped over orbital region; ambula­ tory propods with distoventral spines only; R. 1+6­7/3­4......... K. kororensis (Bruce)
­ Dorsal rostral teeth evenly distributed, similar ........................................................... 14
14. Inferior orbital angle rounded; second pereiopod carpus with two strong distal teeth, dactylus with proximal lateral flange; R. 1+6/5­6 ................ K. platycheles (Holthuis)
­ Inferior orbital angle acute; second pereiopod carpus without strong teeth; dactylus without lateral flange; R. 1+6­7/2 .......................................... K. darwiniensis (Bruce)
15. Supraorbital spines present.......................................................................................... 16
­ Supraorbital spines lacking ......................................................................................... 19
16. Second pereiopod carpus much longer than palm; R. 1+6­9/2­3.................................... ................................................................................................ K. anacanthus (Bruce)
­ Second pereiopod carpus not longer than palm .......................................................... 17
17. Inferior orbital angle obsolete; R. 1+5/3 ...................................... K. paulsoni (Bruce)
­ Inferior orbital angle distinct....................................................................................... 18
18. Rostral lamina slender; second pereiopod carpus distinctly shorter than merus; R. 1+7­ 8/3­4 ................................................................................ K. nilandensis (Borradaile)
­ Rostral lamina deep; second pereiopod carpus subequal to merus; R. 1+7/3 ................ ................................................................................................ K. edwardsii (Paulson)
19. Robustly built species, with two teeth situated on carapace posterior orbital margin 20
­ Slenderly built species, with one tooth situated on carapace posterior to orbital margin ..................................................................................................................................... 21
20. Eyestalk with conspicuous dorsal tubercle; carpus of second pereiopod distinctly shorter than chela; R. 2+6­8/2­5.................................... K. seychellensis (Borradaile)
­ Eyestalks without dorsal tubercles, carpus of second pereiopod about 0.8 of chela length; ambulatory dactyl about 0.25 of propod length; R. 2+5/3 .................................. .................................................................................................. K. ungujaensis (Bruce)
21. Two postorbital teeth present, first tooth epigastric; carpus and fingers of second pereiopod subequal to palm; ambulatory dactyl about 0.35 of propod length; R. 2+6­7/ 3–4 ................................................................................................ K. akiensis (Kubo)
­ One postorbital tooth only........................................................................................... 23
22. Postorbital tooth epigastric; distolateral angle of basal antennular segment multidentate; second pereiopods weakly developed, chelae about 0.6 of carapace length, fingers without diastemal notches; R. 1+ 9­8/4­5............................. K. johnsoni (Bruce)
­ Postorbital tooth not epigastric; distolateral angle of basal antennular segment with distolateral tooth only; second pereiopods well developed, chelae about 0.9–1.1 of carapace length, fingers with distinct diastemal notches ................................................. 22
23. Second pereiopod carpus about 0.5 of palm length; ambulatory dactyl about 0.5 of propod length; R. 1+6­9/2­3 .............................................. K. americanus (Kingsley)
­ Second pereiopod carpus subequal or longer than palm length; ambulatory dactyl about 0.35 of propod length; R. 1+7­8/4­5 ............................ K. calmani (Tattersall)
description: Published as part of Bruce, A. J., 2004, A partial revision of the genus Periclimenes Costa, 1884 (Crustacea: Decapoda: Palaemonidae), pp. 1-26 in Zootaxa 582 on pages 8-10, DOI: 10.5281/zenodo.157391