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FIGURE 4 in Caridina biyiga sp. nov., a new freshwater shrimp (Crustacea: Decapoda Atyidae) from Leichhardt Springs, Kakadu National Park, Australia, based on morphological and molecular data, with a preliminary illustrated key to Northern Territory Caridina

FIGURE 4. Caridina biyiga sp. nov. Paratype ♂ 2.05 mm CL (MAGNT Cr019225): A, first pleopod; D, abdominal pleura 4–6; G, left uropodal protopod. Paratype non-ovig. ♀ 2.25 mm CL (MAGNT Cr019227): B, right uropodal diaeresis, plumose setation omitted; H, ventrolateral view of pre-anal plate; I, telson. Paratype ♂ 2.15 mm CL (MAGNT Cr019225): C, second pleopod. Holotype ♀ 2.2 mm CL (MAGNT Cr019223): E, right third pereiopod; F, right fourth pereiopod; J, right coxa of fourth pereiopod showing epipod and setobranchs; K, fifth pereiopod. Scale bars = 1 mm.

FIGURE 3 in Caridina biyiga sp. nov., a new freshwater shrimp (Crustacea: Decapoda Atyidae) from Leichhardt Springs, Kakadu National Park, Australia, based on morphological and molecular data, with a preliminary illustrated key to Northern Territory Caridina

FIGURE 3. Caridina biyiga sp. nov. Paratype ♂ 2.05 mm CL (MAGNT Cr019225). A, metastoma; B, mandibles; C, maxillula; D, second maxilliped; E, maxilla; F, first maxilliped; G, third maxilliped (dorsal view of left maxilliped). Scale bar = 1 mm.

FIGURE 2 in Caridina biyiga sp. nov., a new freshwater shrimp (Crustacea: Decapoda Atyidae) from Leichhardt Springs, Kakadu National Park, Australia, based on morphological and molecular data, with a preliminary illustrated key to Northern Territory Caridina

FIGURE 2. Caridina biyiga sp. nov. Holotype ♀ 2.2 mm CL (MAGNT Cr019223): A, habitus; C, right first pleopod; D, right second pereiopod; E, enlarged view of rostrum; H, dorsal view of tip of propodus of right first cheliped, setation cut to reveal tip. Paratype ovig. ♀ 2.45 mm CL (MAGNT Cr019226): B, posterodorsal view of anteromedial acron showing transverse ca- rina; G, right antennule. Paratype ♂ 2.05 mm CL (MAGNT Cr019225): F, scaphocerite, setation omitted; J, carapace. Paratype non-ovig. ♀ 2.25 mm CL (MAGNT Cr019227): I, carapace. Scale bar for A = 5 mm, divisions = 1 mm. Remaining scale bars = 1 mm.

FIGURE 1 in Caridina biyiga sp. nov., a new freshwater shrimp (Crustacea: Decapoda Atyidae) from Leichhardt Springs, Kakadu National Park, Australia, based on morphological and molecular data, with a preliminary illustrated key to Northern Territory Caridina

FIGURE 1. Maps showing the location of the study area. Upper left, location of the general study area within Australia; upper right, detailed view of the study area showing the location of Leichhardt Springs; main lower map, broader view of the study area showing its location within Kakadu NP and the Northern Territory.

FIGURE 11 in Caridina biyiga sp. nov., a new freshwater shrimp (Crustacea: Decapoda Atyidae) from Leichhardt Springs, Kakadu National Park, Australia, based on morphological and molecular data, with a preliminary illustrated key to Northern Territory Caridina

FIGURE 11. Live colouration of selected NT Caridina species. A, transversely banded colour form of C. 'sp. WA4' from the Blackmore River, Darwin area, NT; B, longitudinally banded colour form of same; C, C. 'sp. Gulf1' from the Howard R, Darwin area, NT; D, C. 'sp. NT2' from the Blackmore River, Darwin area, NT; E, C. 'sp. NT nilotica' from Leanyer Swamp, Buffalo Creek, Darwin Area; F, closeup view of cephalothorax of same. All photos courtesy of Dave Wilson.

FIGURE 10. A in Caridina biyiga sp. nov., a new freshwater shrimp (Crustacea: Decapoda Atyidae) from Leichhardt Springs, Kakadu National Park, Australia, based on morphological and molecular data, with a preliminary illustrated key to Northern Territory Caridina

FIGURE 10. A, first pereiopod of Caridina wilkinsi (MAGNT Cr019230); B, cephalothorax of same; C, location of preanal carina; D, Caridina 'sp. NT2' (MAGNT Cr019234); E, Caridina 'sp. Gulf1' (MAGNT Cr019232); F–H, pre-anal carina variation in lateral view (setation omitted); I, Caridina 'sp. NT nilotica' (MAGNT Cr019235); J, Caridina typus (MAGNT Cr019231); K, Caridina 'sp. WA4' (MAGNT Cr019236); L, Caridina 'sp. NT1' (MAGNT Cr019233).

FIGURE 7 in Caridina biyiga sp. nov., a new freshwater shrimp (Crustacea: Decapoda Atyidae) from Leichhardt Springs, Kakadu National Park, Australia, based on morphological and molecular data, with a preliminary illustrated key to Northern Territory Caridina

FIGURE 7. Bayesian majority rule consensus topology of Australian Caridina 16S rDNA dataset with Bayesian posterior probability values. Nodes with probability values <0.50 have been collapsed.

Fig. 8 in Freshwater Shrimps from Karst Caves of Southern China, with Descriptions of Seven New Species and the Identity of Typhlocaridina linyunensis Li and Luo, 2001 (Crustacea: Decapoda: Caridea)

Fig. 8. Caridina spinicrus sp. nov. (A, B) first pereiopod, (C) second pereiopod, (D) third pereiopod, (E) male first pleopod, (F) appendix masculina and appendix interna of male second pleopod, (G) male second pleopod. Scale bars: A-D, H = 1.0 mm; E-G = 0.5 mm. (male, cl 6.0 mm, paratype, ZRC 2018.0482).

Fig. 10 in Freshwater Shrimps from Karst Caves of Southern China, with Descriptions of Seven New Species and the Identity of Typhlocaridina linyunensis Li and Luo, 2001 (Crustacea: Decapoda: Caridea)

Fig. 10. Caridina beiliu sp. nov. (A) cephalothorax and cephalic appendages, lateral view, (B) mandible, (C) maxillula, (D) maxilla, (E) first maxilliped, (F) second maxilliped, (G) third maxilliped, (H) uropodal diaeresis. Scale bars: A = 1.5 mm, B-G = 1.0 mm, H = 0.5 mm. (male, cl 6.2 mm, paratype, ZRC 2018.0483).

Fig. 6 in Freshwater Shrimps from Karst Caves of Southern China, with Descriptions of Seven New Species and the Identity of Typhlocaridina linyunensis Li and Luo, 2001 (Crustacea: Decapoda: Caridea)

Fig. 6. Caridina alu sp. nov. (A) third pereiopod, (B) dactylus of third pereiopod, (C) fifth pereiopod, (D) dactylus of fifth pereiopod, (E, G) endopod of male first pleopod, (F, H) appendix masculina and appendix interna of male second pleopod. Scale bars: A, C = 1.0 mm; B, D = 0.2 mm; E-H = 0.5 mm. (A-D, female, cl 5.0 paratype, ZRC 2018.0481; E, F, male, cl 5.8 mm, holotype, IZCAS DE 5029; G, H, male, cl 6.3 mm, paratype, ZRC 2018.0481).

Fig. 5 in Freshwater Shrimps from Karst Caves of Southern China, with Descriptions of Seven New Species and the Identity of Typhlocaridina linyunensis Li and Luo, 2001 (Crustacea: Decapoda: Caridea)

Fig. 5. Caridina alu sp. nov. (A) antennular peduncle, (B) scaphocerite, (C) second maxilliped, (D) third maxilliped, (E) first pereiopod, (F) second pereiopod, (G) distal portion of telsom. Scale bars: A-F = 1.0 mm; G, H = 0.3 mm. (female, cl 5.0 mm, paratype, ZRC 2018.0481).

Fig. 16 in Freshwater Shrimps from Karst Caves of Southern China, with Descriptions of Seven New Species and the Identity of Typhlocaridina linyunensis Li and Luo, 2001 (Crustacea: Decapoda: Caridea)

Fig. 16. Caridina laticarpalis sp. nov. (A) cephalothorax and cephalic appendages, lateral view, (B) scaphocerite, (C) maxillula, (D) maxilla, (E) first maxilliped, (F) second maxilliped, (G) third maxilliped, (H) distal portion of telson. Scale bars: A-G = 1.0 mm; H = 0.2 mm. (male, cl 4.3 mm, holotype, IZCAS DE 5040).

Fig. 19 in Freshwater Shrimps from Karst Caves of Southern China, with Descriptions of Seven New Species and the Identity of Typhlocaridina linyunensis Li and Luo, 2001 (Crustacea: Decapoda: Caridea)

Fig. 19. Caridina aff. heterodactyla Liang and Yan, 1985. (A) cephalothorax and cephalic appendages, lateral view, (B) mandible, (C) maxillula, (D) maxilla, (E) first maxilliped, (F) second maxilliped. Scale bars: A, D-F = 1.0 mm; B, C = 0.5 mm. (ovigerous female, cl 7.5 mm, ZRC).

Fig. 11 in Freshwater Shrimps from Karst Caves of Southern China, with Descriptions of Seven New Species and the Identity of Typhlocaridina linyunensis Li and Luo, 2001 (Crustacea: Decapoda: Caridea)

Fig. 11. Caridina beiliu sp. nov. (A) first pereiopod, (B) second pereiopod, (C) third pereiopod, (D) dactylus of third pereiopod, (E) fifth pereiopod, (F) dactylus of fifth pereiopod. Scale bars: A-C, E = 1.0 mm; D, F = 0.2 mm. (male, cl 6.2 mm, paratype, ZRC 2018.0483). © 2018 Academia Sinica, Taiwan

Fig. 4 in Freshwater Shrimps from Karst Caves of Southern China, with Descriptions of Seven New Species and the Identity of Typhlocaridina linyunensis Li and Luo, 2001 (Crustacea: Decapoda: Caridea)

Fig. 4. Caridina alu sp. nov. (A, B) cephalothorax and cephalic appendages, lateral view, (C) mandible, (D) maxillula, (E) maxilla, (F) first maxilliped. Scale bars: A, B = 2.0 mm; C, D = 0.5 mm; E, F = 1.0 mm; G, H = 0.2 mm. (A, C-F, female, cl 5.0 mm, paratype, ZRC 2018.0481; B, holotype, cl 6.5 mm, IZCAS DE 5029).

Fig. 3 in Freshwater Shrimps from Karst Caves of Southern China, with Descriptions of Seven New Species and the Identity of Typhlocaridina linyunensis Li and Luo, 2001 (Crustacea: Decapoda: Caridea)

Fig. 3. Caridina longshan sp. nov. (A) first pereiopod, (B) second pereiopod, (C) third pereiopod, (D) dactylus of third pereiopod, (E) fifth pereiopod, (F) propodus and dactylus of fifth pereiopod, (G) dactylus of fifth pereiopod. Scale bars: A-C, E, F = 1.0 mm; D, G = 0.2 mm. (A-E, G, female, female, cl 6.5 mm, Panon Cave, Huaoyan Village, Longshan County, Hunan Province, paratype, ZRC 2018.0480; F, wanting leg of another specimen, same location).

Fig. 9 in Freshwater Shrimps from Karst Caves of Southern China, with Descriptions of Seven New Species and the Identity of Typhlocaridina linyunensis Li and Luo, 2001 (Crustacea: Decapoda: Caridea)

Fig. 9. Caridina spinicrus sp. nov. (A) telson, (B) distal portion of telson, (C, D) fourth pereiopod, (E) dactylus of fourth pereiopod, (F) fifth pereiopod, (G) dactylus of fifth pereiopod. Scale bars: A, C, D, F = 1.0 mm; B, E, G = 0.2 mm. (male, cl 6.0 mm, paratype, ZRC 2018.0482).

Fig. 2 in Freshwater Shrimps from Karst Caves of Southern China, with Descriptions of Seven New Species and the Identity of Typhlocaridina linyunensis Li and Luo, 2001 (Crustacea: Decapoda: Caridea)

Fig. 2. Caridina longshan sp. nov. (A) mandible, (B) maxillula, (C) maxilla, (D) first maxilliped, (E) second maxilliped, (F) third maxilliped, (G) distal portion of third maxilliped, (H) male first pleopod, (I) endopod of male first pleopod, (J) male second pleopod, (K) distal portion of telson, (L) sublateral spine, right, (M) uropodal diaeresis. Scale bars: A-F = 1.0 mm; G-J, M = 0.5 mm; K = 0.2 mm; L = 0.1 mm. (A-G, K, L, female, cl 6.5 mm, Cave of Panon, Huaoyan Village, Longshan County, Hunan Province, Paratype, ZRC 2018.0480; H, J, cl 8.8 mm, male, Parking Cave, near Hoyan Village, Longshan County, paratype, ZRC 2018.0489).

Fig. 7 in Freshwater Shrimps from Karst Caves of Southern China, with Descriptions of Seven New Species and the Identity of Typhlocaridina linyunensis Li and Luo, 2001 (Crustacea: Decapoda: Caridea)

Fig. 7. Caridina spinicrus sp. nov. (A) cephalothorax and cephalic appendages, lateral view, (B) mandible, (C) maxillula, (D) maxilla, (E) first maxilliped, (F) second maxilliped, (G) third maxilliped, (H) uropodal diaeresis. Scale bars: A = 2.0 mm; B, C, H = 0.5 mm; D-G = 1.0 mm. (A, male, cl 5.5 mm, holotype, IZCAS DE 5031; B-H, male, cl 6.0 mm, paratype, ZRC 2018.0482).

Fig. 1 in Freshwater Shrimps from Karst Caves of Southern China, with Descriptions of Seven New Species and the Identity of Typhlocaridina linyunensis Li and Luo, 2001 (Crustacea: Decapoda: Caridea)

Fig. 1. Caridina longshan sp. nov. (A-D) cephalothorax and cephalic appendages, lateral view, (E) antennular peduncle, ventral view, (F) scaphocerite, (G) preanal carina. Scale bars: A-D, F = 2.0 mm; E = 1.0 mm; G = 0.5 mm. (A, E-G, male, cl 8.8 mm, Parking Cave, near Hoyan Village, Longshan County, paratype, ZRC 2018.0489; B. female, cl 7.4 mm, Parking Cave, near Hoyan Village, Longshan County, Hunan Province, paratype, UL; C, female, cl 6.5 mm, Panon Cave, Huaoyan Village, Longshan County, Hunan Province, paratype, ZRC 2018.0480; D, female, cl 6.8 mm, Cave of flying Tiger, Hoyan Village, Longshan County, Hunan Province, paratype, RMNHCRUS.D.57289).