Parabetaeus hummelincki Schmitt 1936

• Main Author: Anker, Arthur
• Format: Text
• Language: unknown
• Published: Zenodo 2007
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Malacostraca; Decapoda; Alpheidae; Parabetaeus; Parabetaeus hummelincki; Galapagos; Indian; Rodriguez; Rocas; McArthur; South Atlantic Ocean
• Online Access: https://dx.doi.org/10.5281/zenodo.6245994; https://zenodo.org/record/6245994

Parabetaeus hummelincki (Schmitt, 1936) Fig. 7, 8 b, c Alpheopsis hummelincki Schmitt, 1936: 364. Neoalpheopsis euryone – Manning & Chace, 1990: 17. Neoalpheopsis hummelincki – Chace, 1972: 78; Rodríguez, 1980: 137. Neoalpheopsis sp. – Rodríguez, 1986: 176. Material examined : 1 ovig. female, MNRJ 20217, Brazil, Atol das Rocas, near Barretão, in tide pools and nodules of calcareous algae, coll. P.S. Young, P.C. Paiva and A.A. Aguiar, 27 Aug 2000 [specimen dissected]; 1 ovig. female (with missing chelipeds), USNM 310832, Brazil, off Vitória, Trindade, between Baixa do Sueste and Parcel das Tartarugas, 20 ° 30 ’S, 29 ° 20 ’W, in tide pool, rotenone, depth 1–2 m, collector unknown, 16 Jan 1976; 1 male, holotype of Alpheopsis hummelincki , USNM 67395, Bonaire, Kralendijk, under sandy coral debris, coll. P. Hummelinck, 6 Nov 1930; 1 female, MNHN-Na 16391, Dominican Republic, Bayahibe, from coral rocks, depth 1–2 m, coll. A. Anker, 2–3 Jan 2005; 1 male, USNM 256789, Ascension Island, McArthur Point, poisoned isolated tide pool, coll. R.B. Manning et al., 15 Jul 1976. Comparative material: Parabetaeus cf. euryone (De Man, 1910): 1 female, USNM 216068, Galapagos, Isla Isabela, Bahía Cartago, R/V Velero III, 13 Feb 1933. Parabetaeus euryone : 1 female, MNHN-Na 13633, parasitized by rhizocephalan ( Thompsonia sp.?), Japan, Ryukyu Archipelago, Kerama group, Yakabi-jima, depth 10 m, coll. K. Nomura, 24 Apr 1994; 1 female, QM W- 21828, Hawaii, Oahu, coll. R. Holcom, no further data, det. A. J. Bruce, 26 Oct 1996. Description : See Schmitt (1936, as Alpheopsis hummelincki ). Colour : The young female from the DR (Fig. 8 b) had pale red bands across the abdomen and was generally very similar to the ovigerous female from Bermuda (Fig. 8 c). The obviously larger ovigerous female photographed in situ off St. Vincent had a more intense red banding and bright yellow eggs (Fig. 8 d). Size : The largest western Atlantic specimen examined is the ovigerous female from AR, with CL 6.9 mm, TL 22.0 mm. Ecology : Coarse sand, sand/rubble and reef bottoms, from the lower intertidal to probably at least 10 m, under rubble and rocks, occasionally also in empty Strombus shells (Rodríguez, 1986). The AR specimen was found in a tide pool, among nodules of calcareous algae, whereas the DR specimen was extracted from a crevice of a coral rock collected at about 1– 2 m. Behaviour : Parabetaeus species may carry chelipeds either extended forward (Fig. 8 c), like species of the presumably related genus Alpheopsis Coutière, 1896, or folded beneath the body (Fig. 8 d). Type locality : Bonaire, Netherlands Antilles. Distribution : Western Atlantic: Bermuda (present study), southern Caribbean: Netherlands Antilles (Schmitt, 1936), Venezuela: Los Roques (Rodríguez, 1986); St. Vincent; Dominican Republic (present study); Brazil: Atol das Rocas and Trindade (present study). Central Atlantic: Ascension Island (Manning & Chace, 1990). Remarks : Banner and Banner (1985) placed the western Atlantic Alpheopsis hummelincki Schmitt, 1936 (now Parabetaeus hummelincki ) and the Hawaiian Neoalpheopsis hiatti Banner, 1953 (now Parabetaeus hiatti ) in synonymy of the presumably pantropical Neoalpheopsis euryone De Man, 1910 (now Parabetaeus euryone ), originally described from Indonesia. Nomura & Anker (2001) pointed out that the taxonomic status and synonymy of these two nominal species remain questionable. There appears to be some variation in the shape of the frontal margin (orbital spines, rostrum); the proportions of the telson and pereiopods; the development of the posteromedian triangular piece on the telson; the degree of asymmetry of the chelipeds; the dentition on the cheliped fingers; and some other features, all suggesting that there may be more than one variable pantropical species. Therefore, P. hummelincki and P. hiatti should be treated as valid species, awaiting a combined morphological/molecular revision of the entire P. e u r y o n e complex. : Published as part of Anker, Arthur, 2007, New species and records of alpheid shrimps, genera Salmoneus Holthuis and Parabetaeus Coutière, from the tropical western Atlantic (Decapoda, Caridea), pp. 21-39 in Zootaxa 1653 on pages 34-35, DOI: 10.5281/zenodo.179791 : {"references": ["Schmitt, W. L. (1936) Macruran and anomuran Crustacea from Bonaire, Curacao and Aruba. Zoologische Ergebnisse einer Reise nach Bonaire, Curacao und Aruba im Jahre 1930. Number 16. Zoologische Jahrbucher, Abteilung fur Systematik, Oekologie und Geographie der Tiere, 67, 363 - 378, pls. 11 - 13.", "Manning, R. B. & Chace, F. A. Jr. (1990) Decapod and stomatopod Crustacea from Ascension Island, South Atlantic Ocean. Smithsonian Contributions to Zoology, 503, i - v, 1 - 91.", "Chace, F. A. Jr. (1972) The shrimps of the Smithsonian-Bredin Caribbean expeditions with a summary of the West Indian shallow-water species (Crustacea Decapoda: Natantia). Smithsonian Contributions to Zoology, 98, i - x + 1 - 179.", "Rodriguez, G. (1980) Crustaceos decapodos de Venezuela. Instituto Venezolano de Investigaciones Cientificas, Caracas, 494 pp.", "Rodriguez, B. (1986) Los camarones (Crustacea; Decapoda; Natantia) del Parque Nacional Archipielago de los Roques. Trabajo especial de grado para optar al titulo de Licenciado en Biologia, Universidad Central de Venezuela, Caracas, 350 pp.", "Banner, D. M. & Banner, A. H. (1985) The alpheid shrimp of Indonesia, based upon J. G. de Man's \" The Decapoda of the Siboga Expedition, Part II: Family Alpheidae \" (1911). Marine Research in Indonesia, 25, 1 - 79.", "Nomura, K. & Anker, A. (2001) Redescription of Parabetaeus culliereti Coutiere and status of the genus Neoalpheopsis Banner (Decapoda: Caridea: Alpheidae). Crustacean Research, 30, 43 - 54."]}