Park JH et al. (2019), A new species of the genus Cristimenes Ďuriš & ...

ECB-ART-49919

Zookeys 2019 Jun 05;852:53-71. doi: 10.3897/zookeys.852.34959.

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Park JH , Grave S , Kim W .

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A new species of crinoid-associated shrimp, Cristimenesbrucei sp. nov., is described based on specimens from Korea, although the species also occurs in Hong Kong and is likely more widespread. The new species is morphologically very similar to C.commensalis, but can be distinguished by the reduced supraorbital tooth on the carapace. Cristimenesbrucei sp. nov. is clearly recovered as a monophyletic species through COI barcode and molecular phylogenetic analyses based on four genetic markers (COI, 16S, H3, 18S).

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References [+] :

Darriba, jModelTest 2: more models, new heuristics and parallel computing. 2012, Pubmed

	Figure 1. Cristimenesbrucei sp. nov., lateral aspect. Ovigerous female holotype pocl 3.65 mm (NIBRIV0000841118).
	Figure 2. Cristimenesbrucei sp. nov., female pocl 2.74 mm (A, B, C, E) (MADBK 120532_012), ovig. female paratype pocl 3.65 mm (D) (OUMNH.ZC.2018-03-022). A carapace, lateral view B carapace, eyes, right antennule and antenna, dorsal view C anterior carapace, lateral view D distal end of telson, dorsal view E fifth and sixth abdominal segments, telson, and uropod, lateral view F left uropodal exopod, distolateral armature.
	Figure 3. Cristimenesbrucei sp. nov., female pocl 2.74 mm (MADBK 120532_012). A eye, interocular region, and epistome, dorsal view B antennule, ventral view C antenna, ventral view D fifth (top) and fourth thoracic sternite.
	Figure 4. Cristimenesbrucei sp. nov., female pocl 3.48 mm (MADBK 120532_005). A mandible B maxillule C maxilla D first maxilliped E second maxilliped F third maxilliped.
	Figure 5. Cristimenesbrucei sp. nov., female pocl 2.74 mm (MADBK 120532_012). A first pereiopod, ventrolateral view B same, chela, lateral view C third pereiopod, lateral view D same, dactylus and distal propodus, lateral view E fourth pereiopod, lateral view F fifth pereiopod, lateral view.
	Figure 6. Cristimenesbrucei sp. nov., female pocl 2.74 mm (MADBK 120532_012). A minor right second pereiopod, ventrolateral view B major left second pereiopod, lateral view C same, carpo-propodal articulation, dorsal view D same, dactylus, lateral view E same, distal margin of cutting edge of dactylus.
	Figure 7. Cristimenesbrucei sp. nov., male pocl 2.54 mm (A, B) (MADBK 120532_005), female pocl 2.74 mm (C) (MADBK 120532_012) A endopod and basal half exopod of first pleopod B, C endopod of second pleopod.
	Figure 8. Colour pattern of three species of Cristimenes. ACristimenesbrucei sp. nov. from Korea (MADBK 120532_017) B same, with host crinoid species CCristimenescommensalis (Borradaile, 1915) from Vietnam (SNU VI VI305) DCristimenescristimanus (Bruce, 1965) from Vietnam (SNU VI VI297).
	Figure 9. Cristimenesbrucei sp. nov., female pocl 2.7 mm (MADBK 120532_002) (A, C), male pocl 2.3 mm (MADBK 120532_005) (B), Cristimenescommensalis from Vietnam, female pocl 2.1 mm (SNU VI_VI229) (D) A carapace, lateral view B carapace, dorsal view C supraorbital tooth, lateral view D carapace, dorsal view.
	Figure 10. Cristimenesbrucei sp. nov., female pocl 2.7 mm (MADBK 120532_002) (A, C, D), female pocl 3.34 mm (MADBK 120532_007) (E, F), Cristimenescommensalis from Vietnam, female pocl 2.0 mm (SNU VI_VI155) (B) A, B chela and carpus of second pereiopod C same, distally serrate margin of fixed finger D same, proximally dentate margins of fingers E dactylus and distal propodus of third pereiopod F same, distal dorsal spinules of dactylar corpus, and unguis.
	Figure 11. Phylogenetic tree of Cristimenes and related crinoid associated genera resolved by Maximum Likelihood (ML) and Bayesian Inference (BI) analysis based on the combined dataset for four genes (COI, 16S, H3, and 18S). BI posterior probabilities and ML bootstrap support (BI/ML) as shown. A The topology based on the BI tree B Condensed part of ML tree.