Galathea consobrina De Man , 1902

Macpherson, Enrique & Robainas-Barcia, Aymee, 2015, Species of the genus Galathea Fabricius, 1793 (Crustacea, Decapoda, Galatheidae) from the Indian and Pacific Oceans, with descriptions of 92 new species, Zootaxa 3913 (1), pp. 1-335: 88-91

publication ID

http://dx.doi.org/10.11646/zootaxa.3913.1.1

publication LSID

lsid:zoobank.org:pub:18D06EC6-A61D-4C45-9B5E-52435903556D

DOI

http://doi.org/10.5281/zenodo.3511641

persistent identifier

http://treatment.plazi.org/id/03B3F979-FFA4-427C-FF6D-FD57001EEBA2

treatment provided by

Plazi

scientific name

Galathea consobrina De Man , 1902
status

 

Galathea consobrina De Man, 1902 

( Figs 27View FIGURE 27, 116View FIGURE 116 D)

Galathea consobrina De Man, 1902: 720  , pl. 23, figs 41 a – 41 f ( Ternate, Indonesia, Moluccas).— Baba, 1988: 73, fig. 30 (Sulu Archipelago, Davao Gulf off southeastern Mindanao, Sibuyan Sea, 37–68 m).—Baba et al., 2008: 67 (compilation).—Poore et al., 2008: 19 (SW Australia, 95–100 m).— Dong & Li, 2010: 7 View Cited Treatment , fig. 4 (South China Sea, 7–100 m).

Material examined. Holotype: Indonesia. Moluccas, Ternate: M 2.5 mm ( SMF 4556).

Philippines. MUSORSTOM 1, Stn 57, 13° 53 'N, 120 ° 13 'S, 96–107 m, 26 March 1976: 1 ov. F 3.0 mm (MNHN-IU- 2013-13992). MUSORSTOM 2, Stn CP8, 13° 55 'N, 120 ° 20 'E, 85–90 m, 21 November 1980: 1 M 4.3 mm, 1 F 3.5 mm (MNHN-IU- 2013-8384).— Stn CP28, 13° 41 'N, 120 ° 50 'E, 90–110 m, 23 November 1980: 1 ov. F 3.5 mm, 1 F 2.6 mm (MNHN-IU- 2013-8389).— Stn CP47, 13° 33 'N, 122 ° 10 'E, 81–84 m, 26 November 1980: 1 F 4.4 mm (MNHN-IU- 2013-13984). MUSORSTOM 3, Stn DR117, 12° 31 'N, 120 ° 39 'E, 92–97 m, 3 June 1985: 2 M 2.3–3.6 mm (MNHN-IU- 2013-8399), 1 M 2.7 mm (MNHN-IU- 2013-8398), 1 ov. F 2.7 mm (MNHN-IU- 2013- 8397).—Stn DR137, 12°03'N, 122 °06'E, 56 m, 6 June 1985: 1 M 4.0 mm (MNHN-IU- 2013-8385).

Indonesia. Makassar Strait. CORINDON, Stn DR258, 01° 56.8 'S, 119 ° 17.3 'E, 30 m, 6 November 1980: 1 ov. F 2.8 mm (MNHN-IU- 2013-8396). Kei Islands. KARUBAR, Stn DW22, 05° 22 'S, 133 °01'E, 85–124 m, 25 October 1991: 1 F 2.8 mm (MNHN-IU- 2013-13954).

Vanuatu. SANTO, Stn EP10, 15°38.0'S, 167 ° 13.6 'E, 45–101 m, 15 September 2006: 1 M 2.6 mm, 1 ov. F 2.8 mm (MNHN-IU- 2013-8387).—Stn AT56, 15° 36.1 'S, 167 °01.3'E, 98–105 m, 2 October 2006: 2 M 2.4–3.3 mm, 1 ov. F 3.4 mm (MNHN-IU- 2013-8395).—Stn AT65, 15° 40.3 'S, 167 ° 15.9 'E, 160–167 m, 5 October 2006: 1 F 3.2 mm (MNHN-IU- 2013-8386).— Stn AT75, 15°37.0– 37.3 'S, 167 °09.2–09.6'E, 52–66 m, 10 October 2006: 1 ov. F 3.5 mm (MNHN-IU- 2013-8390).—Stn AT80, 15° 31.7 'S, 167 ° 10.8 'E, 36–43 m, 12 October 2006: 1 ov. F 3.4 mm (MNHN-IU- 2013-8400).— Stn AT84, 15° 32.4 'S, 167 ° 14.3 'E, 71–104 m, 12 October 2006: 1 M 2.4 mm (MNHN-IU- 2013-8394).— Stn EP41, 15° 37.7 'S, 167 °05.1'E, 112 m, 19 October 2006: 1 F 3.0 mm (MNHN- IU- 2013-8391).

Australia. Western Australia. 34 ° 53.10 'S, 115 ° 30.25 'E, 95–100 m, 21 November 2005: 1 ov. F 2.8 mm ( J 55124View Materials).

New Caledonia. Lagon East. Stn 656, 21° 49.1 'S, 166 ° 32.5 'E, 30–40 m, August 1986: 1 M 3.5 mm (MNHN- IU- 2013-8392).— Stn 732, 21° 18.9 'S, 165 ° 50.9 'E, 43–50 m, August 1986: 1 M 4.3 mm (MNHN-IU- 2013- 8388). Touho. 20 ° 47 'S, 165 ° 13 'E, September 1993: 1 M 2.7 mm (MNHN-IU- 2013-8394), 1 ov. F 3.6 mm (MNHN-IU- 2013-8383).

Description. Carapace: as long as broad; transverse ridges with dense short setae, and a few scattered long non-plumose setae; cervical groove distinct, laterally bifurcated. Gastric region with 6 transverse ridges: 1 epigastric ridge with 2 epigastric spines, medially interrupted; 2 protogastric ridges, anterior uninterrupted, convex medially, with 1 parahepatic spine on each side, posterior ridge short and median, sometimes with a few long setae; 1 mesogastric ridge uninterrupted but not extending laterally to anteriormost of branchial marginal spines; 2 metagastric ridges, anterior ridge usually uninterrupted extending laterally to anterior branchial ridges, posterior ridge short or absent. Anterior branchial region with distinct ridges. Mid-transverse ridge uninterrupted, preceded by shallow cervical groove, followed by 5 ridges. One small hepatic spine on each side, near first (anterolateral) marginal spine. Lateral margins well convex medially, with 7 spines: 2 spines in front of, and 5 spines behind, anterior cervical groove; first anterolateral, well-developed, at same level of lateral limit of orbit, second, small, at midlength between anterolateral spine and anteriormost spine of branchial margin, accompanying another spine ventral to between first and second; 2 spines on anterior branchial region, and 3 spines on posterior branchial margin, last small. Small spine on lateral limit of orbit; infraorbital margin with strong spine. Rostrum 1.5 as long as broad, length 0.6 postorbital carapace length and breadth 0.4 that of carapace; distance between distalmost lateral incisions 0.25 distance between proximalmost lateral incisions; dorsal surface nearly horizontal in lateral view, with some setose scales; lateral margin with 4 deeply incised sharp teeth.

Pterygostomian flap rugose, unarmed, ridges with short setae, anterior margin blunt.

Sternum: As long as broad, lateral extremities gently divergent posteriorly.

Abdomen: Somites 2–4 each with 2 uninterrupted transverse ridges on tergite, posterior ridge sometimes medially interrupted; somites 5 and 6 each with 2 medially interrupted ridges, sometimes absent. Males with G 1 and G 2.

Eyes: Ocular peduncles 1.3 times longer than broad, maximum corneal diameter 0.6 rostrum width.

Antennule: Article 1 with 3 well-developed distal spines, distodorsal larger, distomesial spine slightly smaller than others. Ultimate article with a few short fine setae not in tuft on distodorsal margin.

Antenna: Article 1 with ventral distomesial spine exceeding distal margin of article 2. Article 2 wider than or as wide as long, with 2 well-developed subequal distal spines, reaching midlength of article 3. Articles 3 and 4 unarmed.

Mxp 3: Ischium with small spine on flexor and extensor distal margins; crista dentata with 23 or 24 denticles. Merus as long as ischium; flexor margin with 2 subequal spines; extensor margin with small distal spine. Carpus unarmed.

P 1: 2.5 times carapace length, covered with finely setiferous scales, with scattered long setae. Merus as long as carapace, 4 times as long as carpus, with spines arranged roughly in rows, dorsomesial spines stronger; distal spines prominent. Carpus 0.4 length of palm, 2.1 times as long as broad; dorsal and lateral surfaces with some spines; mesial margin with 3 or 4 spines (distal second strong). Palm twice longer than broad, lateral and mesial margins slightly convex; spines arranged roughly in dorsolateral and dorsomesial rows, some small spines scattered on dorsal side. Fingers slightly shorter than palm, unarmed; each finger distally with two rows of teeth, spooned.

P 2–4: moderately slender, with setose striae and sparse long plumose setae. P 2 1.9 times carapace length. Meri successively shorter posteriorly (P 3 merus 0.9 length of P 3 merus, P 4 merus 0.8 length of P 3 merus); P 2 merus 0.7 carapace length, 4.5 times as long as broad, 1.5 times longer than P 2 propodus. Extensor margin with row of 7–9 proximally diminishing spines on P 2 –3, 6 spines on P 4; ventral margins distally ending in strong spine followed proximally by 0 or 1 spines and several eminences, lateral sides unarmed. Carpi with 2 or 3 spines on extensor margin on P 2 –3, 1 spine on P 4; lateral surface with 2 or 3 acute granules sub-paralleling extensor margin; flexor distal margin acute. Propodi 3.5 –4.0 times as long as broad; extensor margin unarmed; flexor margin with 4–6 movable spines. Dactyli distally ending in well-curved strong spine, length 0.7–0.8 that of propodi; flexor margin with 5 or 6 proximally diminishing teeth, terminal one prominent.

Epipods absent on pereiopods.

Coloration. Translucent reddish brown or light brown overall. Long setae on carapace and abdomen reddish. P 1 fingers distally whitish. P 2–4 with brownish and whitish stripes.

Remarks. Galathea consobrina  belongs to the group of species with non-scale-like gastric ridges, including a laterall interrupted mesogastric ridge carapace lateral margin with one small but distinct spine between anterolateral spine and anteriormost branchial marginal spine, antennular basal article with 3 well-developed terminal spines, two epigastric spines, P 1 are distally spooned and pereiopods without epipods. The closest species are G. argus  n. sp. from Western Australia, and G. t a g a ro n. sp. from Vanuatu and Solomon Islands. The species can be distinguished by the following aspects:

Galathea argus  resembles G. tagaro  and G. consobrina  from which it can be differentiated by having the carapace dorsal surface without scale-like median ridge behind the protogastric transverse ridge, whereas this median ridge is always present in G. consobrina  and G. tagaro  .

Galathea consobrina  is also very similar to G. tagaro  n. sp. The two species can be distinguished by the length of the P 2–4 propodi, being 3.5 –4.0 times longer than broad in G. consobrina  , whereas they are 4.5–4.8 times in G. tagaro  . Furthermore, the ground color of G. consobrina  is light brown, instead of green in G. t a g a ro.

No genetic data are available for G. a rg u s and G. tagaro  .

Distribution. Philippines, Indonesia, Vanuatu, New Caledonia and Western Australia, 30– 167 m.

SMF

Forschungsinstitut und Natur-Museum Senckenberg

Kingdom

Animalia

Phylum

Arthropoda

Class

Malacostraca

Order

Decapoda

Family

Galatheidae

Genus

Galathea

Loc

Galathea consobrina De Man , 1902

Macpherson, Enrique & Robainas-Barcia, Aymee 2015
2015
Loc

Galathea consobrina De Man , 1902 : 720

Dong 2010: 7
Baba 1988: 73
Man 1902: 720
1988