Decapoda - Brachyura - Xanthidae - Etisus

Etisus odhneri Takeda, 1971

World Distribution
Sakai (CD-2004) - Indo-ouest Pacifique. Afrique orientale (Kenya), Taiwan, Palau. Mayotte premier signalement.

Environnement : Marine - Substrat/Association : Hard bottom (rock and rubbles)

Vertical range : Shallow-waters (0-100 m) - Min-Max observed: 6-30 m

Mayotte data
Etisus odhneri Takeda, 1971
Material examined — Mayotte KUW 2009, st. 4, La Prévoyante Reef, 6-10 m, 1 F 6.6 x 9.4 mm (photo live with label as 7x9.6 mm), 2 MM 5.6 x 7.5 mm and 7.0 x 9.7 mm, MNHN-IU-2009-2623, det. Poupin July 2011; st. 23, Choizil Pass, "Patate à Teddy", 15-30 m, 1 M 7.4 x 10.3 mm, MNHN-IU-2009-2625, det. July 2011; st. 25, south islet M'tzamboro, 15-20 m, 1 M juv. 4.5 x 6.2 mm (photo live), 1 M juv. 5.8 x 7.6 mm, 1 F juv. 6.8 x 9.5 mm (photo live), det. July 2011, first id. as Etisus ?demani, MNHN-IU-2009-2622, det. Poupin July 2011, 1 F ov. 7.3 x 10.1 mm, 1 F 9.7 x 13.3 mm, det. September 2011, MNHN-IU-2009-2622; st. 33, seaside of Longoni Pass, 25 m, 1 M 6.3 x 8.7 mm, MNHN B32292, MNHN-IU-2009-1110, re-det. July 2011, first id. as E. ?demani; st. 35, Surprise Reef, Longoni Pass, 4-25 m, 1 F 7.5 x 10.4 mm, det. September 2011, MNHN-IU-2009-2621.
Remarks — These specimens were first attributed to E. ?demani Odhner, 1925, a very similar species (see remarks under E. demani). They have been re-identified as E. odhneri after careful re-examination and by using Takeda (1971) original description and Serène (1984) key and observations. The following characters seem to be characteristic of E. odhneri: front straight without small lateral lobes, intercalated denticles between anterolateral teeth absent or reduced; male pleopod without a few short distal setae instead of several long distal setae. The opinion of Serène (1984), however, that E. odhneri is perhaps a juvenile form of a E. demani is supported herein by the largest specimen attributed to E. odheneri (1 F 9.7 x 13.3 mm, MNHN-IU-2009-2622) with characters somewhat intermediate between E. odhneri and E. demani (lateral lobes of front and intercalated denticles between anterolateral teeth small but present).
Geographic and depth ranges — IWP, Kenya, Mayotte (this work) to Taiwan, Palau Islands, Australia (Coral Sea); subtidal.

References : PDF list, 214 pp (1.4 Mo)

This species in Worms Database