Caridina variabilirostris de Mazancourt, Marquet & Keith, 2018

Mazancourt, Valentin de, Marquet, Gérard & Keith, Philippe, 2024, An Integrative Taxonomic Revision of the Freshwater Atyid Shrimps (Crustacea: Decapoda: Caridea) of Micronesia, Diversity 16 (200), pp. 1-31 : 23-24

publication ID	https://doi.org/10.3390/d16040200
DOI	https://doi.org/10.5281/zenodo.15091700
persistent identifier	https://treatment.plazi.org/id/D477D357-D239-A529-7E93-C2BEFD270583
treatment provided by	Carolina (2025-03-26 18:54:20, last updated 2025-03-26 19:58:48)
scientific name	Caridina variabilirostris de Mazancourt, Marquet & Keith, 2018
status

Treatment

Caridina variabilirostris de Mazancourt, Marquet & Keith, 2018 View in CoL

Figures 3J View Figure 3 and 10B View Figure 10 .

- Caridina variabilirostris de Mazancourt, Marquet, and Keith, 2018: 7 , Figures 3 View Figure 3 and 4 View Figure 4 [type locality: Federated States of Micronesia, Pohnpei Island, Nanpilriver, 06 ◦ 54.252 ′ N, 158 ◦ 11.491 ′ E, 180 m a.s.l.].—de Mazancourt et al., 2019 [47]: 167, Figures 2–5 View Figure 2 View Figure 3 View Figure 4 View Figure 5 ; 2020 [43]: 20, 30;

- Caridina brachydactyla —Maciolek and Ford, 1987 [13]: 628;

- Caridina vitiensis —Maciolek and Ford, 1987 [13]: 628;

- Caridina longirostris —Maciolek and Ford, 1987 [13]: 628;

- Caridina sp. —de Mazancourt et al., 2017 [40]: 249, Figures 2 View Figure 2 and 5 View Figure 5 ;

- Caridina weberi —Maciolek and Ford, 1987 [13]: 628.—Nelson et al., 1996 [14]: 11.— Buden et al., 2001 [15]: 257.—Page et al., 2007 [21]: 649, 650, Figures 2 View Figure 2 and 3 View Figure 3 .— von Rintelen et al., 2008 [72]: 2248, Figure 4 View Figure 4 .—Benstead et al., 2009 [16]: 459.—de Mazancourt et al., 2017 [40]: 226, Figure 4 View Figure 4 ;

- Caridina nilotica var.? wycki —Roux, 1925 [12]: 149.

Material examined

See [8].

Distribution

This species is known from Pohnpei only thus far [8].

Remarks

This species used to be confused with C. brachydactyla De Man, 1908 or C. mertoni Roux, 1911 (see [8]).

Figures

Figure 2. Rivers and sites surveyed in Babeldaob, Guam, and Pohnpei (dots: prospected sites).

Figure 3. Phylogenetic tree of the atyid species from Micronesia obtained by Bayesian inference from the 16S rRNA. Numbers above branches indicate Bayesian posterior probabilities, numbers under branches indicate maximum likelihood bootstraps. Letters A–K for the clades refer to the species listed in the taxonomic account.

Figure 4. Atyoida chacei sp. nov. (a) first pereiopod of female; (b) first pereiopod of male; (c) second pereiopod of female; (d) second pereiopod of male; (e) third pereiopod; (f) dactylus of third pereiopod; (g) fifth pereiopod; (h) dactylus of fifth pereiopod; (i) uropodal diaeresis; (j) pre-anal carina; (k) telson; (l) male first pleopod, endopod; (m) male second pleopod; (n) undeveloped eggs; (o) cephalothorax; (p,q) rostrum variations. Holotype MNHN-IU-2024-439 (DNA: 1858): i, l, m, and p. Paratypes: MNHN-IU-2024-440 (DNA: CA1859): b, d, and q; MNHN-IU-2024-442 (DNA: CA1860): e, f, j, k, and o; MNHN-IU-2024-446 (DNA: CA1871): a, c, g, h, and n.

Figure 5. Caridina ponapensis sp. nov. (a) first pereiopod; (b) second pereiopod; (c) third pereiopod; (d) fifth pereiopod; (e) dactylus of third pereiopod; (f) dactylus of fifth pereiopod; (g) pre-anal carina; (h) uropodal diaeresis; (i) telson; (j) undeveloped eggs; (k) male first pleopod; (l) male second pleopod; (m) rostrum; (n) cephalothorax. Holotype: MNHN-IU-2024-447: h, k, l, and m. Paratypes: MNHN-IU-2024-451 (DNA: CA1391): a–f, i, j, and n; MNHN-IU-2024-452 (DNA: CA1388): g.

Figure 2. Rivers and sites surveyed in Babeldaob, Guam, and Pohnpei (dots: prospected sites).

Figure 10. (A) Caridina appendiculata from Pohnpei (P. Keith); (B) Caridina variabilirostris from Pohnpei (P. Gerbeaux); (C) Caridina variabilis from Guam (M. Sasazuka, One’s habitat); (D) Caridina variabilis from Babeldaob (P. Keith).