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Fig. 10 in Two new species of Metacyclops Kiefer, 1927 (Copepoda, Cyclopoida) from Thailand and an up-to-date key to the species recorded in Asia

Fig. 10. Metacyclops brancelji sp. nov., paratype, ♀ (A; ZMB 34231a) and holotype, ♀ (B−D; ZMB 34231 slide No. 5124). A. Habitus, dorsal view. B. Fifth pedigerous somite and genital double-somite, lateral view. C−D. Two last abdominal somites and caudal rami, dorsal and lateral views, respectively. Scale bars: A = 100 μm; B−D = 50 μm.

Fig. 7 in Two new species of Metacyclops Kiefer, 1927 (Copepoda, Cyclopoida) from Thailand and an up-to-date key to the species recorded in Asia

Fig. 7. Metacyclops sakaeratensis sp. nov., holotype, ♀ (ZMB 34230 slide No. 5120). A. P1, frontal view. B. P2, frontal view. C. Frontal view of intercoxal sclerite of P3. D. P3 exp-1. E. P4, frontal view. Arrows indicate hook-like expansion. In C and E, the spinule row is on the caudal surface of intercoxal sclerite and coXa. Scale bar = 50 μm.

Fig. 9 in Two new species of Metacyclops Kiefer, 1927 (Copepoda, Cyclopoida) from Thailand and an up-to-date key to the species recorded in Asia

Fig. 9. Metacyclops sakaeratensis sp. nov., paratype, ♂ (A−D; ZMB 34230 slide No. 5123) and allotype, ♂ (E−G; ZMB 34230 slide No. 5121). A−D. Intercoxal sclerites of P1, P2, P3 and P4, respectively, frontal view. E−F. Right and left P5, respectively, ventral view. G. P6, lateral view. In C−D, the spinule row is on the caudal surface of intercoXal sclerite. Scale bar = 50 μm.

Fig. 12 in Two new species of Metacyclops Kiefer, 1927 (Copepoda, Cyclopoida) from Thailand and an up-to-date key to the species recorded in Asia

Fig. 12. Metacyclops brancelji sp. nov., holotype, ♀ (ZMB 34231 slide No. 5124). A. Antennule. B. Antenna, caudal view. C. Mandible. D. Maxillule, frontal view. E. Maxilla, frontal view. F. Maxilliped, frontal view. Scale bar = 50 μm.

Fig. 3 in Two new species of Metacyclops Kiefer, 1927 (Copepoda, Cyclopoida) from Thailand and an up-to-date key to the species recorded in Asia

Fig. 3. Metacyclops sakaeratensis sp. nov., holotype, ♀ (ZMB 34230 slide No. 5120). A−B. Fifth pedigerous somite and genital double-somite, ventral and lateral views, respectively. C. Caudal ramus, lateral view (arrows indicate spinules). D−E. P5, lateral and ventral views, respectively (arrows in D indicate rows of spinules on the lateral surface of the fifth pedigerous somite). Scale bars = 50 μm.

Fig. 2 in Two new species of Metacyclops Kiefer, 1927 (Copepoda, Cyclopoida) from Thailand and an up-to-date key to the species recorded in Asia

Fig. 2. Metacyclops sakaeratensis sp. nov., paratype, ♀ (A, C; ZMB 34230) and holotype, ♀ (B, D; ZMB 34230 slide No. 5120). A. Habitus, dorsal view. B. Rostrum, frontal view. C. Integumental pits and posterior margins of cephalothorax and two subsequent pedigerous somites, dorsal view. D. Urosome, dorsal view (black and open arrows indicate spinules and transverse suture, respectively). Scale bars: A, C = 100 μm; B, D = 50 μm.

Fig. 1 in Two new species of Metacyclops Kiefer, 1927 (Copepoda, Cyclopoida) from Thailand and an up-to-date key to the species recorded in Asia

Fig. 1. Geographical location and details of the sampling sites. A. Map of Thailand and a location of Nakhon Ratchasima, Satun and Songkhla Provinces. B–C. Location (indicated by a black circle with no. 1) and sampling point of headwater stream in Nakhon Ratchasima Province. D. Locations of caves in Satun and Songkhla Provinces (indicated by black circles with nos 2, 3, 4). E–F. Sampling points in Phupha Phet Cave. G–H. Sampling points in Rakhang Thong Cave and Khao Nui Cave, respectively.

Fig. 6 in Two new species of Metacyclops Kiefer, 1927 (Copepoda, Cyclopoida) from Thailand and an up-to-date key to the species recorded in Asia

Fig. 6. Metacyclops sakaeratensis sp. nov., holotype, ♀ (ZMB 34230 slide No. 5120). A−B. Right and left mandibles, respectively (the mandibular palp of the right mandible was lost during dissection). C. Maxillule, caudal view. D. Maxilla, caudal view. E. MaXilliped, frontal view. Scale bar = 50 μm.

Fig. 15 in Two new species of Metacyclops Kiefer, 1927 (Copepoda, Cyclopoida) from Thailand and an up-to-date key to the species recorded in Asia

Fig. 15. Metacyclops brancelji sp. nov., paratype, ♂ (A−D; ZMB 34231 slide No. 5127) and allotype, ♂ (E−G; ZMB 34231 slide No. 5125). A−D. Intercoxal sclerites of P1, P2, P3 and P4, respectively, frontal view. E−F. Right and left P5, respectively, ventral view. G. P6, ventral view. In C−D, the spinule row is on the caudal surface of intercoXal sclerite. Scale bar = 50 μm.

Fig. 5 in Two new species of Metacyclops Kiefer, 1927 (Copepoda, Cyclopoida) from Thailand and an up-to-date key to the species recorded in Asia

Fig. 5. Metacyclops sakaeratensis sp. nov., holotype, ♀ (A−B; ZMB 34230 slide No. 5120) and paratype, ♀ (C−D; ZMB 34230 slide No. 5122). A. Antennule (arrows indicate aesthetascs). B. Antenna, frontal surface. C. Coxobasis of antenna, caudal surface. D. Labrum, inner side. Scale bar = 50 μm.

Fig. 11 in Two new species of Metacyclops Kiefer, 1927 (Copepoda, Cyclopoida) from Thailand and an up-to-date key to the species recorded in Asia

Fig. 11. Metacyclops brancelji sp. nov., SEM photographs of additional material (Rakhang Thong Cave, Satun Province, collection of the third author CB), ♂ (A, C−E) and ♀ (B). A. Second and third pedigerous somites, lateral view (arrow indicates distal margin of third pedigerous somites). B. Genital double-somite and second abdominal somite, dorsal view (arrow indicates posterior margin of the transverse suture). C. Caudal ramus, lateral view (arrows indicate spinules). D. P5, lateral view. E. Male P6, lateral view.

Fig. 13 in Two new species of Metacyclops Kiefer, 1927 (Copepoda, Cyclopoida) from Thailand and an up-to-date key to the species recorded in Asia

Fig. 13. Metacyclops brancelji sp. nov., holotype, ♀ (ZMB 34231 slide No. 5124). A. P1, frontal view. B. P2, frontal view. C. Frontal view of intercoxal sclerite of P3. D. P4, frontal view. E−F. Right and left P5, respectively, ventral view. In C−D, the spinule row is on the caudal surface of intercoxal sclerite and coXa. Scale bars = 50 μm.

Fig. 8 in Two new species of Metacyclops Kiefer, 1927 (Copepoda, Cyclopoida) from Thailand and an up-to-date key to the species recorded in Asia

Fig. 8. Metacyclops sakaeratensis sp. nov., paratype, ♂ (A; ZMB 34230 slide No. 5123) and allotype, ♂ (B−C; ZMB 34230 slide No. 5121). A. Habitus, dorsal view. B. Genital and first abdominal somites, ventral view. C. Antennule (Roman numerals indicate segment of antennule). Scale bars: A = 100 μm; B−C = 50 μm.

Fig. 14 in Two new species of Metacyclops Kiefer, 1927 (Copepoda, Cyclopoida) from Thailand and an up-to-date key to the species recorded in Asia

Fig. 14. Metacyclops brancelji sp. nov., paratype, ♂ (A; ZMB 34231 slide No. 5126), allotype, ♂ (B−C, E; ZMB 34231 slide No. 5125) and additional material, ♂ (D; ZMB 34231 slide No. 5129). A. Habitus, dorsal view. B. Genital and first abdominal somites, ventral view. C. First to fourteenth segment of antennule. D. Fourteenth to sixteenth segment of antennule, E. Fifth to tenth segment of antennule (Roman numerals indicate segment of antennule). Scale bars: A = 100 μm; B−E = 50 μm.

Fig. 4 in Two new species of Metacyclops Kiefer, 1927 (Copepoda, Cyclopoida) from Thailand and an up-to-date key to the species recorded in Asia

Fig. 4. Metacyclops sakaeratensis sp. nov., digital photographs of allotype, ♂ (A, F; ZMB 34230 slide No. 5121) and SEM photographs of additional material, ♀♀ (B−E; collection of the third author CB). A. Posterior margins of cephalothorax and two subsequent pedigerous somites, dorso-lateral view (arrows indicate posterior margin of the second, third and fourth pedigerous somites). B. Anterior part of genital double-somite, lateral view (arrow indicates posterior margin of the transverse suture). C. Caudal ramus, lateral view (arrows indicate spinules). D. P4 enp-2, frontal view. E. P5, ♀, lateral view. F. P6, ♂, lateral view.

Figure 4 from: Mercado-Salas N, Suarez-Morales E, Maeda-Martínez A, Silva-Briano M (2013) A new species of Metacyclops Kiefer, 1927 (Copepoda, Cyclopidae, Cyclopinae) from the Chihuahuan desert, northern Mexico. ZooKeys 287: 1-18. https://doi.org/10.3897/zookeys.287.4358

Figure 4 - Metacyclops deserticus sp. n., SEM-processed female from Coahuila, Mexico. A habitus, lateral view B antennule C antenna D maxilliped (lateral view) E mouthparts.

Figure 3 from: Mercado-Salas N, Suarez-Morales E, Maeda-Martínez A, Silva-Briano M (2013) A new species of Metacyclops Kiefer, 1927 (Copepoda, Cyclopidae, Cyclopinae) from the Chihuahuan desert, northern Mexico. ZooKeys 287: 1-18. https://doi.org/10.3897/zookeys.287.4358

Figure 3 - Metacyclops deserticus sp. n., male allotype from Coahuila, Mexico. A antennule (segments 1–11) B antennule (segments 12–14) C Endopod P4 D urosome E Leg 5 F Leg 6 G Anal operculum. Scales bars A–G = 50 µm.

Figure 5 from: Mercado-Salas N, Suarez-Morales E, Maeda-Martínez A, Silva-Briano M (2013) A new species of Metacyclops Kiefer, 1927 (Copepoda, Cyclopidae, Cyclopinae) from the Chihuahuan desert, northern Mexico. ZooKeys 287: 1-18. https://doi.org/10.3897/zookeys.287.4358

Figure 5 - Metacyclops deserticus sp. n., SEM-processed female from Coahuila, México. A leg 1 B endopodite 2 leg 4 C leg 5 D leg 6 E genital double somite, ventral view F caudal ramus, ventral.

Figure 1 from: Mercado-Salas N, Suarez-Morales E, Maeda-Martínez A, Silva-Briano M (2013) A new species of Metacyclops Kiefer, 1927 (Copepoda, Cyclopidae, Cyclopinae) from the Chihuahuan desert, northern Mexico. ZooKeys 287: 1-18. https://doi.org/10.3897/zookeys.287.4358

Figure 1 - Metacyclops deserticus sp. n., female holotype from Coahuila, Mexico. A habitus, dorsal view B urosome, ventral view C antennule D antenna E mandible F maxillule G maxilla H maxilliped I anal operculum. Scales bars A–B= 100µm; C–I= 50 µm.

Figure 2 from: Mercado-Salas N, Suarez-Morales E, Maeda-Martínez A, Silva-Briano M (2013) A new species of Metacyclops Kiefer, 1927 (Copepoda, Cyclopidae, Cyclopinae) from the Chihuahuan desert, northern Mexico. ZooKeys 287: 1-18. https://doi.org/10.3897/zookeys.287.4358

Figure 2 - Metacyclops deserticus sp. n., female holotype from Coahuila, Mexico. A Leg 1 B Leg 2 C Leg 3 D Leg 4 E Leg 5. Scales bars A–D= 50 µm; E= 10 µm.