Caridina appendiculata Jalihal & Shenoy, 1998

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 : 22-23

Caridina appendiculata Jalihal & Shenoy, 1998

Figures 3I and 10A.

Caridina appendiculata Jalihal and Shenoy, 1998: 128 [type locality: River Bari (approx. 8 ◦ 21.070 ′ S, 120 ◦ 10.928 ′ E), Flores, Indonesia].—Cai and Ng, 2007 [64]: 1590.—Klotz et al., 2007 [65]: 7, Figure 3 (part), 4.—de Mazancourt et al., 2018 [66]: 1433, Figure 1 , 4 .; 2019 [47]: 166; 2020 [43]: 3, 78 (key), Figures 2H and 25C.—Short et al., 2019 [67]: 4, 15, Figure 7 .— Hernawati et al., 2020 [68]: Figure 3 .

- Caridina gracilirostris —De Man, 1892 [69]: 399 (part).—Holthuis, 1978 [70]: 35 (part);

- Caridina sp. E —Page et al., 2007 [21]: 648, Figures 2 and 3 .—Cook et al., 2011 [71]: 278, Figure 3 .

Material examined

PALAU: Babeldaob Island. MNHN-IU-2018-127 (DNA: CA1021 ): 1 ♀ ovig., cl 3.9 mm, small stream East Coast , near the estuary ( Station 5 ), 07 ◦ 29.909 ′ N, 134 ◦ 38.099 ′ E, 2 March 2011, 0 ma.s.l., coll. M. Castelin, P. Keith, P. Gerbeaux, G. Marquet, and L. Taillebois.

FEDERATED STATES OF MICRONESIA: Pohnpei Island . MNHN–IU–2018–128 , 1 ♀ ovig. cl 3.2 mm and MNHN–IU–2018–129 , 1 ♀ ovig. cl 3.6 mm (DNA: CA1333 ); Nanpil river estuary , 5 m a.s.l., 06 ◦ 56.609 ′ N, 158 ◦ 13.550 ′ E, coll. P. Keith, P. Gerbeaux, G. Marquet, L. Taillebois, and M. Castelin, 13 March 2012; MNHN–IU–2018–130 , 1 ♀ ovig. cl 3.0 mm (DNA: CA1330 ), MNHN–IU–2018–131 , 1 ♀ ovig. cl 3.4 mm and MNHN–IU–2018–132 , 1 ♀ cl 3.1 mm; unnamed river, estuary, 5 m a.s.l., 06 ◦ 48.579 ′ N, 158 ◦ 12.639 ′ E, coll. P. Keith, P. Gerbeaux, G. Marquet, L. Taillebois, and M. Castelin, 15 March 2012. MNHN-IU-2024-464 (DNA: CA1183 ), 2 ♀ ovig., cl 3.2–3.6 mm, Nanpil river estuary ( Station 9 ), 06 ◦ 56.609 ′ N, 158 ◦ 13.550 ′ E; 13 March 2012; 5 ma.s.l., coll. M. Castelin, P. Keith, P. Gerbeaux, G. Marquet, and L. Taillebois. MNHN-IU-2018-130 , 1 ♀ ovig., cl 3.0 mm, 1 ♀, cl 3.1 mm, River 2 , 15 March 2012, 5 ma.s.l., 06 ◦ 48.579 ′ N, 158 ◦ 12.639 ′ E, coll. M. Castelin, P. Keith, P. Gerbeaux, G. Marquet, and L. Taillebois. USNM 104882 : 1 juv. cl 2.8 mm, south fork of Arakitaoch river , station 170-A , 7 ◦ 31.556 ′ N, 134 ◦ 34.199 ′ E, 15 November 1956, coll. H.A. Fehlmann. USNM 172592 : 4 ♀, cl 2.9–3.6 mm, Metengalakumer river , station 1MR 4-08 , 17 November 1977, coll. G. Bright. MNHN–IU–2018–127 , 1 ♀ ovig. cl 3.9 mm (DNA: CA1021 ), small stream East Coast , near the estuary , 0 m a.s.l., 07 ◦ 29.909 ′ N, 134 ◦ 38.099 ′ E, 2 March 2011, coll. P. Keith, P. Gerbeaux, G. Marquet, L. Taillebois, and M. Castelin.

Distribution

C. appendiculata Jalihal and Shenoy, 1998 is known from Australia, Indonesia (Flores, Obira, and Sulawesi), Solomon Islands (Kolombangara, Isabel), Micronesia (Pohnpei), Palau, and Vanuatu (Aneityum, Efate, Epi and Santo ) [66].

Habitat

All specimens were found in a typical brackish water environment (brackish water pool or colonizing the lower part of rivers, near the estuary).

Remarks de Mazancourt et al. [66] redescribed this species in detail.

Figures

Figure 1. Map of Micronesia with the three surveyed islands circled in red.

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 7. Caridina cf. serratirostris. Lateral view of the single ovigerous female, MNHN-IU-2024-461 (DNA: CA1245).