Tropical reef lobsters of the genus Enoplometopus
(Astacidea, Enoplometopidae)

Joseph POUPIN

Character List

REFERENCES

#2. <References>/

LOCATION OF TYPES SPECIMENS

#3. <Location of types specimens>/

MATERIAL EXAMINED

#4. <Material examined>/

CARAPACE

#5. Lateral edge of rostrum with/
1. two spines/
2. three spines/
3. four spines/
4. five spines/

#6. Carapace armed with <a) median spines>/
1. four median spines/
2. five median spines/
3. six median spines/

#7. <Carapace armed with, b) postcervical spines>/
1. no postcervical spine or an indistinct one/
2. one postcervical spine/
3. two postcervical spines/

#8. <Carapace armed with, c) lateral spine>/
1. two lateral spines/
2. three lateral spines/
3. four lateral spines/

#9. <Carapace armed with, d) intermediate spine>/
1. one intermediate spine/
2. two intermediate spines/

#10. <Carapace armed with: e) supra-ocular spine>/
1. one supra-ocular spine/
2. two supra-ocular spines/

CHELIPEDS (P1) & AMBULATORY LEGS (P2 to P5)

#11. Chela/
1. long and slender, 4–7 times as long as wide/
2. broad and compressed, about 3 times as long as wide/

#12. Dactyl of cheliped/
1. without spines on outer margin/
2. with spines and tubercles on outer margin/

#13. <Arrangement of spines on outer margin of movable finger of cheliped>/
1. spines disposed over the full length/
2. 2 or 3 distal spines, behind which the margin is smooth or with low blunt tubercules/

Character used by Bouvier (1915) and Holthuis (1983: 282, key). It could be size related, as observed for example in E. callistus: state 1 obvious for holotype male cl 42 mm, but state 2 applies for two larger specimens, a male 45 mm and a female 53.5 mm. Also in E. occidentalis, state 2 is valid for small specimens but for larger specimens the tubercules or spiny scales that are usually disposed on proximal 2/3 are developped as real spines and state 1 could be applied.

#14. Upper and lower faces of chela/
1. smooth, without tubercles/
2. with tubercles/

For species that have tubercles on upper and lower faces of chela, such as E. crosnieri and E. occidentalis, it has been observed that they can be sometimes greatly reduced on juveniles specimens, chela appearing then almost smooth.

#15. Dactyl of second pereiopod/
1. short less than 0.3 times as long as propodus/
2. long, about 0.3 times as long as propodus/

Character first used by Bouvier (1915) to separate type specimen of Enoplometopus pictus (dactyl short) from a specimen of E. occidentalis (dactyl long). It is not a very good one because, due to the curvature of the dactyl, measure of its length can vary from one operator to another. Measurements made for that study show that dactyl of P2 is usually 0.3 times as long as propodus. It is slightly shorter (dactyl/propodus about 0.2) only in E. chacei, E. gracilipes, E. holthuisi and, according to Bouvier (1915), in E. pictus (in E. voigtmanni dactyl/propodus length is not known).

#16. Carpus <of second pereiopod>/
1. with a distoventral spine/
2. without distoventral spine/

Character used by Bouvier (1915) to separate the type specimen of Enoplometopus pictus and a specimen of E. occidentalis. Observations made during that study show that it is not very good because the distoventral spine of carpus can be occasionally missing in species where it is usually present.

ABDOMEN & TELSON

#17. Pleurae of abdominal somites II to V/
1. rounded or bluntly pointed/
2. with a sharp, posteriorly curved median tooth/

#18. Anteroventral margins of pleurae II to V/
1. finely denticulated/
2. smooth/

Denticulate aspect of margin of pleurae II-V is first recognized as a diagnositic character within the genus. In adults it is verified only in E. callistus. It has also been observed in a juvenile of E. holthuisi (♂ cl 22.5 MNHN As 271), which has tiny denticles on pleurae II-III only, and is also illustrated for a juvenile of E. antillensis in Manning (1989: 415, Fig. 4D). Therefore, it seems to be a juvenile character, retained in adult stages of E. callistus only.

#19. Posterior margin of sixth abdominal tergite/
1. with 2 short spines/
2. smooth or tuberculated, but without true spines/

#20. Male first pleopod/
1. without distal or subdistal indentation/
2. with distal or subdistal indentation/

#21. Telson with <lateral spines>/
1. one lateral spine/
2. two lateral spines/

#22. And <telson with distolateral spines>/
1. two distolateral spines/
2. three distolateral spines/

COLORATION

#23. Ground color of body/
1. whitish or very pale purple/
2. orange red/
3. very pale brownish or purplish/
4. purplish/

#24. Lateral face of carapace with <coloration>/
1. color spots only on lower part/
2. a large white circle/
3. numerous non-ocellated spots or patches/
4. one or two ocellated spot/
5. streaks/
6. large rounded patch on gastric area/

#25. Ambulatory legs <color pattern>/
1. orange red with narrow white bands/
2. almost uniformely colored/

#26. Abdomen with <coloration>/
1. white patch on pleuron of abdominal somite 2/
2. non-ocellated spots or patches/
3. several ocellated spots/
4. some scattered red blotches and white spots/

DISTRIBUTION

#27. <Geographic Distribution>/

#28. Deep distribution:/
meters/

#29. <Gross Geographic Distribution>/
1. Atlantic/
2. West Atlantic/
3. Central Atlantic/
4. East Atlantic/
5. Indian Ocean/
6. West Indian Ocean/
7. East Indian Ocean/
8. Indonesia-Philippines region (Indonesia, Malaysia, China Sea, northern Australia, New Guinea, Philippines)/
9. Pacific/
10. West Pacific/
11. Central Pacific/
12. East Pacific/

REMARKS

#30. <Remarks>/

Cite this publication as: Joseph POUPIN (2002 onwards).Tropical reef lobsters of the genus Enoplometopus: Descriptions, Illustrations, Identification, and Information Retrieval, using the DELTA format. Version: 30 May 2002. At http://biomar.free.fr/enoplometopus/.

Index