Caridina piokerai, Mazancourt & Boseto & Marquet & Keith, 2020

Mazancourt, Valentin de, Boseto, David, Marquet, Gerard & Keith, Philippe, 2020, Solomon’s Gold Mine: Description or redescription of 24 species of Caridina (Crustacea: Decapoda: Atyidae) freshwater shrimps from the Solomon Islands, including 11 new species, European Journal of Taxonomy 696, pp. 1-86 : 57-59

publication ID

https://doi.org/ 10.5852/ejt.2020.696

publication LSID

lsid:zoobank.org:pub:265EDD08-7AA8-4835-B7F6-353E7992633E

DOI

https://doi.org/10.5281/zenodo.4336360

persistent identifier

https://treatment.plazi.org/id/CF802FC0-547B-4E48-A7D5-9E99A4561F9D

taxon LSID

lsid:zoobank.org:act:CF802FC0-547B-4E48-A7D5-9E99A4561F9D

treatment provided by

Valdenar

scientific name

Caridina piokerai
status

sp. nov.

Caridina piokerai View in CoL sp. nov.

urn:lsid:zoobank.org:act:CF802FC0-547B-4E48-A7D5-9E99A4561F9D

Figs 2U View Fig , 18 View Fig

Caridina cf. weberi View in CoL sp. 5 – de Mazancourt et al. 2019a: 166 View Cited Treatment , 169–170.

Etymology

This species is dedicated to Piokera S. Holland (Ecological Solutions Solomon Islands team member) who helped with the sampling in Kolombangara Island.

Material examined

Holotype

SOLOMON ISLANDS • ♀, cl 3.5mm; Kolombangara Island , Poitete River; 07°53.077´S, 157°07.776´E; 13 Nov. 2015; P. Keith, C. Lord and G. Marquet leg.; DNA voucher: CA1909; MNHN-IU- 2018-2896. GoogleMaps

Paratypes

SOLOMON ISLANDS – Kolombangara Island • 1 ♀ ovig., cl 2.9 mm; Vagé River ; 08°06.640´S, 157°00.1674´E; 59 m a.s.l.; 10 Nov. 2015; P. Keith, C. Lord and G. Marquet leg.; MNHN-IU- 2018-2897 GoogleMaps 1 ♀ ovig., cl 3.1 mm; same collection data as for preceding; MNHN-IU- 2018-2898 GoogleMaps 1 ♀ ovig., cl 3.3 mm; same collection data as for preceding; MNHN-IU- 2018-2899 GoogleMaps 1 ♀ ovig., cl 2.9 mm; Liva River ; 08°03.881´S, 157°10.421´E; 11 Nov. 2015; P. Keith, C. Lord and G. Marquet leg.; MNHN- IU- 2018-2900 GoogleMaps 1 ♀ ovig., cl 3.6 mm; Sulumuni River ; 08°02.253´S, 157°09.257´E; 148 m a.s.l.; 12 Nov. 2015; P. Keith, C. Lord and G. Marquet leg.; MNHN-IU- 2018-2901 GoogleMaps 1 ♀ ovig., cl 3.3 mm; Vanga 1 River ; 07°55.088´S, 156°57.624´E; 18 Nov. 2015; P. Keith, C. Lord and G. Marquet leg.; MNHN- IU- 2018-2902. – Choiseul GoogleMaps Island • 1 ♀ ovig., cl 3.1 mm; Lopakare River ; MNHN-IU- 2018-2903 1 ♀, cl 3.9 mm; 07°01.613´S, 156°46.567´E; 50 m a.s.l.; 20 Oct. 2014; P. Gerbeaux, P. Keith and G. Marquet leg.; DNA voucher: CA1930; MNHN-IU- 2018-2904 . – Vella Lavella Island • 1 ♀ ovig., cl 2.6 mm; Vala Kadju River ; MNHN-IU- 2018-2905 1 ♀ ovig., cl 2.8 mm; 07°49.860´S, 156°42.644´E; 17 m a.s.l.; 28 Oct. 2016; P. Keith and C. Lord leg.; MNHN-IU-2019-125 1 ♀, cl 3.2 mm; Maravari River ; 07°51.703´S, 156°41.768´E; 81 m a.s.l.; 31 Oct. 2016; P. Keith and C. Lord leg.; MNHN-IU- 2018-2907 GoogleMaps 1 ♀ ovig., cl 2.8 mm; same collection data as for preceding; MNHN-IU- 2018-2908 GoogleMaps 1 ♀ ovig., cl 3.2 mm; same collection data as for preceding; MNHN-IU- 2018-2909 GoogleMaps 1 ♀ ovig., cl 3.2 mm; same collection data as for preceding; MNHN-IU- 2018-2910 GoogleMaps 1 ♀ ovig., cl 2.1 mm; same collection data as for preceding; DNA voucher: CA1981; MNHN-IU- 2018-2911 GoogleMaps .

Description

CEPHALOTHORAX. Suborbital angle indistinguishably fused with antennal spine. Pterygostomian margin rounded. Rostrum ( Fig. 18k View Fig ): straight or bent down, short, 0.3–0.5 of cl, reaching to second segment of antennular peduncle, armed with 9–13 teeth on dorsal margin, 0–1 of them situated on carapace behind orbital margin, ventral margin with 1–4 teeth. Eyes well developed, anterior end reaching to 0.66 length of basal segment of antennular peduncle. Antennular peduncle 0.50 times as long as carapace. Anterolateral angle reaching 0.33 length of second segment, second segment shorter than third segment. Stylocerite reaching to 0.90 length of basal segment of antennular peduncle.

PEREIOPODS. Epipods on first four pereiopods. P1 ( Fig. 18a View Fig ): chela about 1.9–2.3 times as long as wide, movable finger 2.5–3.6 times as long as wide, 0.9–1.5 times length of palm; carpus 1.4–1.8 times as long as wide. P2 ( Fig. 18b View Fig ) more slender and longer than first pereiopod, with chela 2.4–3.0 times as long as wide: movable finger 3.9–5.2 times as long as wide, 1.4–2.1 times length of palm; carpus slender, 4.6–6.2 times as long as wide. P3 ( Fig. 18c View Fig ): stout, dactylus ( Fig. 18e View Fig ) 2.6–3.4 times as long as wide (terminal spiniform seta included), with 4–5 spiniform setae on flexor margin in addition to terminal one; propodus 8.1–10.4 times as long as wide, 3.9–5.3 times as long as dactylus. P5 ( Fig. 18d View Fig ): dactylus ( Fig. 18f View Fig ) 2.7–4.5 times as long as wide, with 21–33 spiniform setae on flexor margin; propodus 10.5– 15.0 times as long as wide, 3.5–6.2 times as long as dactylus.

ABDOMEN. Third abdominal somite with moderately convex dorsal profile. Sixth abdominal somite 0.48 times as long as carapace, 1.4 times as long as fifth somite, 0.88 as long as telson.

TELSON ( Fig. 18i View Fig ). 3 times as long as wide, with five pairs of dorsal spinules and pair of dorsolateral spinules; posterior margin with median process, rounded, with 5–10 very long intermediate setae longer than lateral ones.

MALE PLEOPODS. No males.

PRE- ANAL CARINA ( Fig. 18g View Fig ). High, unarmed.

UROPODAL DIAERESIS ( Fig. 18h View Fig ). With 17–20 spinules.

EGGS. Size: 0.39–0.47 × 0.20–0.28 mm.

Habitat

This species is largely rheophile and prefers fresh and well-oxygenated waters from the lower course to the higher course of rivers (17–148m a.s.l.).

Colour pattern

Unknown.

Distribution

This new species occurs on several of the Solomon Islands (Choiseul, Kolombangara and Vella Lavella).

Remarks

These specimens from the Solomon Islands are very similar to C. macrodentata Cai & Shokita (2006a) because of the large teeth on the dorsal margin of the rostrum. However, the P1 and P2 carpus are slender, 1.4–1.8 times as long as wide (vs 1.2 in C. macrodentata ) and 4.6–6.2 (vs 3.8), respectively, and the P5 dactylus is longer, 3.5–6.2 as long as wide (vs 2.4), not ending in two large claws (vs ending in two large claws).

Kingdom

Animalia

Phylum

Arthropoda

Class

Malacostraca

Order

Decapoda

Family

Atyidae

Genus

Caridina

Loc

Caridina piokerai

Mazancourt, Valentin de, Boseto, David, Marquet, Gerard & Keith, Philippe 2020
2020
GBIF Dataset (for parent article) Darwin Core Archive (for parent article) View in SIBiLS Plain XML RDF