Munida galalala, McCallum & Ahyong & Andreakis, 2021

McCallum, Anna W., Ahyong, Shane T. & Andreakis, Nikos, 2021, New species of squat lobsters of the genus Munida from Australia, Memoirs of Museum Victoria 80, pp. 113-152 : 119-121

publication ID

https://doi.org/ 10.24199/j.mmv.2021.80.06

publication LSID

urn:lsid:zoobank.org:pub:EA21667A-77A5-411D-9C1A-23ECFFF3D505

persistent identifier

https://treatment.plazi.org/id/03D85A12-FFED-3178-FF6C-FCB76A1B2B47

treatment provided by

Felipe

scientific name

Munida galalala
status

sp. nov.

Munida galalala View in CoL sp. nov.

http://zoobank.org/urn:lsid:zoobank.org:act:83168BC4-60EA-

4710-A32B-42AAFFF985CA

Figures 4, 5 View Figure 5

Type material. Holotype. WAM C78558 About WAM , male (cl 17.8 mm, pcl 11.5 mm), Western Australia, Leveque L 27 transect, 14° 33.432' S, 121° 20.388' E to 14° 2.772' S, 121° 19.644' E, 924–1101 m, SS05/2007/156, 3 July 2007 to 4 July 2007. GoogleMaps

Description. Carapace. Length 1.1 × greatest width, widest at midlength. Dorsal surface with main transverse ridges mostly uninterrupted and some short secondary transverse striae between main ridges on anterior half; ridges and striae lined with short, non-iridescent setae. Gastric region slighly elevated, with 2 pairs of epigastric spines, longest pair behind supraocular spines. Hepatic region granular; parahepatic spine absent. Anterior part of branchial region between cervical groove and postcervical groove with few short scale-like ridges and tubercles; postcervical spine absent; posterior part of branchial region with 5 main transverse ridges (excluding posterodorsal ridge) and few short secondary striae laterally between main ridges. Cardiac region with 4 main transverse ridges. Intestinal region with short median stria; posterodorsal ridge distinct, slightly convex medially, without secondary stria. Frontal margin inclined posteriorly at 110° from midline. Lateral margins slightly convex; anterolateral spines parallel, horizontal, reaching sinus between rostrum and supraocular spine; marginal hepatic spine anterior to cervical groove also strong, although distinctly shorter than anterolateral spine; branchial margin with 5 spines. Rostrum spiniform, gentle curving upwards, length 0.7 pcl; supraocular spine 0.45 × length of rostrum. Epistomial ridge curved ending anterior to antennal gland; mesial protuberance distinct.

Thoracic sternum. Surface smooth, without striae. Sternite 3 0.4 width of sternite 4; median length of sternal plastron (sternites 4–7) 0.6 width of sternite 7. Sternite 4 anterior margin subtrapezoid, broadly contiguous with sternite 3.

Abdomen. Somite 2 with 7 prominent spines along anterior transverse ridge. Somites 2–4 each with 1 uninterrupted stria behind anterior ridge, without striae at lateral margins. Somite 6 posteromedian margin almost straight. Telson with numerous transverse squamae; greatest width 1.5 × median length; anterolateral margin concave.

Eye. Maximum corneal diameter 0.15 × distance between anterolateral spines.

Antennule. Basal article (distal spines excluded) overreaching corneae; well-developed distolateral spine much longer than short distomesial spine; 2 lateral spines, proximal smaller, not exceeding distal spines.

Antenna. Article 1 with strong distomesial spine not reaching distal margin of article 2. Article 2 distomesial spine not overreaching distal margin of article 3; distolateral spine reaching distal margin of article 3. Article 3 distomesial spine almost reaching distal margin of article 4. Article 4 unarmed.

Maxilliped 3. Ischium 1.3 × merus length, with small flexor distal spine. Merus with 2 large spines on flexor margin and 1 small spine; extensor margin unarmed.

P1. 3.0 × pcl, covered in plumose setae, without iridescent setae, merus 1.2 × pcl, with row of 6 dorsal spines and 2 rows of spines on mesial margin; distal spines strong, distomesial spine not reaching midlength of carpus. Carpus 0.6 × merus length, length 2.6 × width, with spines along mesial and dorsal margins. Propodus 1.2 × merus length, fingers slightly shorter than palm, 0.5 × total propodus length; pollex with small subdistal spine, margin unarmed; dactylusouter margin unarmed.

P2–4. Moderately long, slender, with numerous scales on lateral surfaces of meri; extensor margin with row of plumose setae. P2 length 2.1 × pcl; merus as long as pcl, length 7× height, 3.5 × carpus length and 1.4 × propodus length, with well-developed spines on extensor margin, increasing in size distally, flexor margin with row of small spines and well-developed distal spine; carpus with large spine and distal spine on extensor margin, distal spine on flexor margin; propodus length 6.5 × height, with 5 small movable flexor spines; dactylus compressed, slightly curved, 0.6 × propodus length, length 5.5 × width, with 9 movable spines evenly spaced along flexor margin including spine at base of unguis. End of P2 carpus reaching end of P1 merus. P3 missing. P4 length 0.8 × P2 length; merus 0.7 × pcl; merocarpal articulation almost reaching hepatic marginal spine of carapace.

Genetic data. COI and 16S; see Table 1.

Etymology. Named galalala , meaning lobster in Dambimangari language, used as a noun in apposition.

Remarks. Munida galalala sp. nov. belongs to the group of species having five spines on the lateral branchial margins of the carapace, smooth thoracic sternites, small eyes, and spines on the anterior ridge of abdominal somite 2. The antennal peduncle is most similar to Munida parvioculata Baba, 1982 , both species having a distinct distomesial spine on antennal peduncle article 3. The new species differs in:

- the generally smooth surface of the carapace with widely spaced transverse striae, compared to rugose with interrupted transverse ridges in M. parvioculata

- the unarmed lateral margin of the cheliped pollex (with 2 spines in M. parvioculata )

- a row of 7 spines on abdominal somite 2 versus a single pair in M. parvioculata .

Munida galalala View in CoL can be distinguished from all other species in this group (i.e. M. clevai Macpherson, 2009 View in CoL , M. ampliantennulata Komai, 2011 View in CoL , M. profunda Macpherson and de Saint Laurent, 1991 View in CoL , M. endeavourae Ahyong and Poore, 2004 View in CoL , M. pollioculus Komai and Higashiji, 2016 View in CoL , and M. typhle Macpherson, 1994 View in CoL ) by the presence of a spine on antennal peduncle article 3.

Distribution. Presently known only from off north-western Australia, 924–1101 m.

WAM

Western Australian Museum

Kingdom

Animalia

Phylum

Arthropoda

Class

Malacostraca

Order

Decapoda

Family

Munididae

Genus

Munida

Loc

Munida galalala

McCallum, Anna W., Ahyong, Shane T. & Andreakis, Nikos 2021
2021
Loc

Munida galalala

McCallum & Ahyong & Andreakis 2021
2021
Loc

M. pollioculus

Komai and Higashiji 2016
2016
Loc

M. ampliantennulata

Komai 2011
2011
Loc

M. clevai

Macpherson 2009
2009
Loc

M. endeavourae

Ahyong and Poore 2004
2004
Loc

M. typhle

Macpherson 1994
1994
Loc

M. profunda

Macpherson and de Saint Laurent 1991
1991
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