Leptalpheus denticulatus Anker & Marin, 2009

Anker, Arthur, Pratama, Idham Sumarto, Firdaus, Muhammad & Rahayu, Dwi Listyo, 2015, On some interesting marine decapod crustaceans (Alpheidae, Laomediidae, Strahlaxiidae) from Lombok, Indonesia, Zootaxa 3911 (3), pp. 301-342 : 320

publication ID

https://doi.org/ 10.11646/zootaxa.3911.3.1

publication LSID

lsid:zoobank.org:pub:071C75F3-4865-4CCE-AACA-21C82739E626

DOI

https://doi.org/10.5281/zenodo.3511621

persistent identifier

https://treatment.plazi.org/id/AD437D0C-F167-AD6A-94CE-1775F45A19F1

treatment provided by

Plazi

scientific name

Leptalpheus denticulatus Anker & Marin, 2009
status

 

Leptalpheus denticulatus Anker & Marin, 2009 View in CoL

( Fig. 14 View FIGURE 14 )

Leptalpheus denticulatus Anker & Marin 2009: 92 View in CoL View Cited Treatment , figs. 1–6, 7a, b, 8; Anker 2010: 38 View Cited Treatment , fig. 10.

Material examined. Indonesia. 1 male, 2 females ( MZB Cru 4048), western Lombok, Teluk Medana, seagrass flat with sand, mud, some rubble-gravel, burrow, suction pump and digging/sieving, 0.2–0.7 m, 12 May 2014 [male: LB-St3-19, females: LB-St3-08, LB-St3-28]; 1 male ( RMNH. CRUS.D.56743), same collection data [LB-St3-21]; 1 ov. female ( OUMNH.ZC. 2014-10-13), same collection data [LB-St3-16]; 1 female ( MZB Cru 4049), same collection data, associated with Glypturus armatus [LB-St3-07]; 1 female ( RMNH. CRUS.D.56744), western Lombok, Sira, seagrass flat with some muddy areas, burrow, suction pump and digging/sieving, 0.2–0.5 m, leg. D.L. Rahayu et al., 13 May 2014 [LB-St4-39]; 1 male ( RMNH. CRUS.D.56745), same collection data [LB-St4-03]; 1 female ( OUMNH.ZC. 2014-10-14), same collection data [LB-St4-33]; 1 female ( OUMNH.ZC. 2014-10-15), same collection data [LB-St4-34]; 1 female ( MZB Cru 4053), same collection data [LB-St4-41A]; 1 female ( OUMNH.ZC. 2014-10-16), southern Lombok, Teluk Sekotong, seagrass flat, burrow, suction pump, 0.2–0.5 m, leg. D.L. Rahayu et al., 14 May 2014 [LB-St6-34]; 1 female ( MZB Cru 4049), same collection data [LB-St6-15].

Comparative material. Australia. Leptalpheus pacificus Banner & Banner, 1974: 1 male, 1 ov. female ( ZRC 2014.0723), Cocos (Keeling) Islands, Tanjong Puji, burrow (possibly associated with Neocallichirus jousseaumei or Eucalliax aequimana ), leg. P.K.L. Ng et al., 20.III.2011 [CK-03].

Taxonomic account. See Anker & Marin (2009); see also Anker (2010) for additional illustrations.

Habitat. Near-shore sand flats with silt-mud component, often near mangroves or seagrass beds; in burrows of the callianassid mud-shrimp, Glypturus armatus . Depth range: intertidal and shallow subtidal (around 0–5 m).

Distribution. Indo-West Pacific: Vietnam, Philippines, Indonesia (new record), Fiji, French Polynesia ( Anker & Marin 2009; Anker 2010; present study).

Remarks. Leptalpheus denticulatus , a relatively widespread infaunal shrimp, is recorded from Indonesia for the first time. This species appears to be the most common infaunal alpheid in shallow bays of Lombok, which are dominated by sand-mud and seagrass (e.g., Teluk Medana, Sira, Teluk Sekotong). In Teluk Medana, one specimen was found together with its presumed burrowing host, the callianassid mud-shrimp, Glypturus armatus , which is also known to host Jengalpheops rufus (see above).

Leptalpheus denticulatus View in CoL is easy to be confused with L. pacificus Banner & Banner, 1974 View in CoL , and in some areas the two species are found in sympatry, for instance, in French Polynesia ( Anker 2010). The only morphological difference between the two species appears to be the shape of the transverse suture (diaeresis) of the uropodal exopod, which has a small mesial tooth in L. denticulatus View in CoL . This tooth is usually acute or subacute, but in some larger individuals, it is blunt and barely recognisable as a tooth. The colouration, usually pale reddish in L. denticulatus View in CoL ( Fig. 14 View FIGURE 14 ) vs. pale yellowish in L. pacificus View in CoL , may provide an additional character to separate these two species ( Anker 2010). Although L. pacificus View in CoL has not yet been found in Indonesia, its presence in Cocos (Keeling) Islands in the eastern Indian Ocean, southwest of Java (present study, see comparative material), French Polynesia, Hawaii, and possibly Madagascar (Banner & Banner 1974; Anker 2010), suggests that it most likely also occurs in the vast Indonesian Archipelago.

MZB

Museum Zoologicum Bogoriense

RMNH

National Museum of Natural History, Naturalis

ZRC

Zoological Reference Collection, National University of Singapore

Kingdom

Animalia

Phylum

Arthropoda

Class

Malacostraca

Order

Decapoda

Family

Alpheidae

Genus

Leptalpheus

Loc

Leptalpheus denticulatus Anker & Marin, 2009

Anker, Arthur, Pratama, Idham Sumarto, Firdaus, Muhammad & Rahayu, Dwi Listyo 2015
2015
Loc

Leptalpheus denticulatus

Anker 2010: 38
Anker 2009: 92
2009
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