Decapoda - Anomura - Munididae - Iridonida

Iridonida pusilla (Benedict, 1902)

8 Illustration(s)

World Distribution
Felder et al. (2009) - Western Atlantic, 18-159 m. North Carolina, Florida Strait, Gulf Mexico, Bahamas, Carribean.
Melo (1999: 198) - Including Brazil.

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

Vertical range : Shallow to deep-waters (e.g. 10-190 m) - Min-Max observed: 18-159 m

Lesser Antilles data
Distribution: North Carolina, Florida Strait, Bahamas, Gulf of Mexico, Caribbean Sea. Lesser Antilles, ICA (St Eustatius, Guadeloupe, Trinidad). 18-159 m (to ?242 m if Guadeloupe Karubenthos 2015 record is confirmed). WA.
Munida pusilla - Williams, 1984: 236, Trinidad. - Faasse, 2016: 52, St Eustatius [Photo of a specimen (fig. 5)].
Guadeloupe - Karubenthos 2012 (det. E. Macpherson, workshop Besse 2013), st. GB12, 14 May 2012, 16°25.61'N, 61°32.57'W, 14 m, MNHN-IU-2013-4215 (JL756); st. GD01, 04 May 2012, 16°22.57'N, 61°34.12'W, 80 m, MNHN-IU-2013-4192, 4227; st. GD02, 04 May 2012, 16°22.57'N, 61°34.12'W, 80 m, MNHN-IU-2013-4190 (JL219); st. GD31, 16 May 2012, 16°24.97'N, 61°32.8'W, 85 m, MNHN-IU-2013-4220 (JL900); st. GD34, 17 May 2012, 16°25.72'N, 61°33.79'W, 80 m, MNHN-IU-2013-4124 (JL968), 4176 (JL944-photo), 4200 (JL993-photo); st. GD35, 17 May 2012, 16°22.77'N, 61°34.19'W, 66 m, MNHN-IU-2013-4184 (JL972), 4201 (JL980); st. GD37, 18 May 2012, 16°22.8'N, 61°33.44'W, 60 m, MNHN-IU-2013-4133 (JL1081), 5209; st. GD55, 24 May 2012, 16°22.48'N, 61°35.46'W, 85 m, MNHN-IU-2013-4132 (JL1331); st. GD58, 25 May 2012, 16°22.68'N, 61°34.95'W, 95 m, MNHN-IU-2013-4177 (JL1386), 4206 (JL1431); st. GD59, 25 May 2012, 16°22.55'N, 61°35.38'W, 88 m, MNHN-IU-2013-4194 (JL1381); st. GD61, 26 May 2012, 16°11.97'N, 61°03.96'W, 80 m, MNHN-IU-2013-4990 (JL1433); st. GD69, 28 May 2012, 16°15.97'N, 61°10.18'W, 60 m, MNHN-IU-2013-5065; st. GD70, 28 May 2012, 16°16.42'N, 61°10.22'W, 100 m, MNHN-IU-2013-4988; st. GN03, 03 May 2012, 16°23'N, 61°36'W, 117 m, MNHN-IU-2013-4138 (JL60-photo); st. GN11, 06 May 2012, 16°23'N, 61°36'W, 140 m, MNHN-IU-2013-4134 (JL312-photo); st. GN12, 06 May 2012, 16°23'N, 61°37'W, 146 m, MNHN-IU-2013-4214 (JL320); st. GN26, 18 May 2012, 16°24'N, 61°33'W, 130 m, MNHN-IU-2013-4221 (det. C. Carmona-Suarez).
Munida aff. pusilla/spinifrons - Guadeloupe (first record?), Karubenthos II 2015, field det. J. Poupin, st. CP4624, 26 June 2015, 15°56.23'N, 61°30.67'W, 242-243 m, MNHN-IU-2013-19114.
Comment: Karubenthos specimen is affiliated to Munida pusilla Benedict, 1902 and Munida spinifrons Henderson, 1885 two species that are very close (Baba & Camp, 1998; Melo-Filhlo & Melo, 1992a). The specimen must be examined for positive identification. Munida pusilla have been already recognized around Guadeloupe between 14-146 m during Karubenthos I 2012 (unpublished det. E. Macpherson).

French Guiana and surroundings areas: Guiana, Suriname, Brazil (Amapà)
Munida pusilla – Melo-Filho, 1998: 395, Brazil Amapá [From Melo-Filho (1994), not seen]. — Melo, 1999: 198, Brazil Amapá. — Melo-Filho & Coelho-Filho, 2004: 61, Brazil Amapá [In distribution; 38-122 m]. — Coelho et al., 2007: tab. 4, Brazil Amapá. – Corbari et al., 2015: 165–167, unnumbered tab., French Guiana [R/V Hermano Gines, July–October 2014, 30–800 m; Guyane 2014 Expedition, 16 lots in MNHN, det. E. Macpherson].
Munida brasiliae Coelho, 1973c: 344, Brazil Amapá. In part M. pusilla, following Melo-Filho & Coelho-Filho (2004: 61), Baba et al. (2008: 115). In WoRMS (2023) M. brasiliae is listed as an uncertain species (nomen dubium), not included in the present checklist.
Iridonida pusilla – Records transmitted by E. Macpherson (August 2023): French Guiana, Proteus-Guyane 2017 Expedition, st. DW5061, 6°17.7' N, 52°14.2'W, 30/11/2017, 90 m , MNHN-IU-2017-1896, 1898, MNHN-IU-2018-4409.
Distribution/Habitat – WA; Marine; 18–159 m.

Comment(s) on data
[Ressembles M. spinifrons with 7-8 small spines on rostrum and long rostrum (1.1 rostrocervical distance). First attributed to M. spinifrons when using Chace (1942, key; spines on rostrum). Baba & Camp (1988) have redescribed M. spinifrons and do not mention spines on posterior cervical groove, present on sp. photographed; they indicate that M. spinifrons is very close to M. pusilla and that, in the later, a vague spination can be discerned on rostrum (Rostral spine not distinctly spinose on the margins in Chace, 1942), spines on posterior cervical groove are not indicated but Benedict (1902) mentions '1 spine on branchial region behind the fork of the suture'; Melo-Filhlo & Melo (1990: 765) indicate that M. spinifrons is distinguished from M. pusilla by having the rostrum relatively longer and with more accentuated lateral spinulation, the post-cervical spines absent … i.e. present in M. pusilla],

New Munididae genera in 2022 are from: Macpherson & Baba in Machordom, Ahyong, Andreakis, Baba, Buckley, Garcia-Jimenez, McCallum, Rodriguez-Flores & Macpherson, 2022, Invertebrate Systematics 36(10) 926-970 https://doi.org/10.1071/IS22013

References : PDF list, 214 pp (1.4 Mo)

This species in Worms Database