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Fig. 3 in Mongolodiaptomus mekongensis, a new species of copepod (Copepoda, Calanoida, Diaptomidae) from temporary waters in the floodplain of the lower Mekong River Basin

Fig. 3. Mongolodiaptomus mekongensis, new species, female. A, antenna; B, mandible; C, maxillule; D, maxilla; E, maxilliped. Scale bar = 100 µm.

Fig. 7 in Mongolodiaptomus mekongensis, a new species of copepod (Copepoda, Calanoida, Diaptomidae) from temporary waters in the floodplain of the lower Mekong River Basin

Fig. 7. Mongolodiaptomus mekongensis, new species, male. A, P5 in posterior view; B, P5 in anterior view. Scale bar = 100 μm.

Fig. 2 in Mongolodiaptomus mekongensis, a new species of copepod (Copepoda, Calanoida, Diaptomidae) from temporary waters in the floodplain of the lower Mekong River Basin

Fig. 2. Mongolodiaptomus mekongensis, new species, SEM photographs of female (A–I). A, habitus, dorsal view; B, rostrum, frontal view; C, pediger 5 and urosome, dorsal view (white arrow pointed to spines); D, caudal rami, ventral view; E, P5 in anterior view; F, P5 in posterior view; G, P5 Exp-2–3 in anterior view; H, P5 Exp-2–3 in posterior view; I, Enp-1–2 in anterior view, white arrow indicates the segmented Enp.

Fig. 8 in Mongolodiaptomus mekongensis, a new species of copepod (Copepoda, Calanoida, Diaptomidae) from temporary waters in the floodplain of the lower Mekong River Basin

Fig. 8. Distribution map of Mongolodiaptomus mekongensis, new species, in the lower Mekong River Basin. A, species distribution in southeast Asia indicates with different coloured circles (Thailand: violet = Ubon Ratchathani Province; Laos: blue = Champasak Province; Cambodia: green = Steung Treng Province, yellow = Kratié Province, red = Kampong Thom Province, white = Siem Reap Province, black = Battambang Province; Vietnam: grey = Binh Phuoc Province); B, species distribution in Ubon Ratchathani Province from Thailand (an area of Ubon Ratchathani indicated with shaded black in A), 1–31 = sampling site.

Fig. 1 in Mongolodiaptomus mekongensis, a new species of copepod (Copepoda, Calanoida, Diaptomidae) from temporary waters in the floodplain of the lower Mekong River Basin

Fig. 1. Mongolodiaptomus mekongensis, new species, female. A, habitus, dorsal view; B, rostrum anterior view; C, pediger 5 and urosome, dorsal view; D, urosome, ventral view (without caudal rami); E, pediger 5 and urosome, right lateral view (without caudal rami); F, pediger 5 and urosome, left lateral view (without caudal rami); G, antennule. Scale bar = 200 µm.

Fig. 5 in Mongolodiaptomus mekongensis, a new species of copepod (Copepoda, Calanoida, Diaptomidae) from temporary waters in the floodplain of the lower Mekong River Basin

Fig. 5. Mongolodiaptomus mekongensis, new species, SEM photographs, male (A–M). A, habitus, dorsal view; B, lateral wings, genital somite, and urosomites 2–3, dorsolateral view (white arrow pointed to spines and black one pointed to seta); C, pediger 5, genital somite, and urosomites 2–3, dorsal view; D, right caudal ramus, ventral view (white arrow pointed spiniform process); E, P5 in posterior view; F, the right coxal spine, and basis of P5 in posterior view (white arrow pointed to spiniform process on posterior lobe); G, intercoxal plate, and basis of P5 in posterior view (white arrow pointed to hyaline membranes); H, the right P5 Exp-1–2 and Enp in posterior view; I, the right P5 Exp-1–2 in anterior view (white arrow pointed to spiniform processes); J, the left P5 basis, Exp and Enp in posterior view (white arrow pointed to longitudinal chitinous ridge); K, the left P5 Exp-1–3 and Enp in posterior view; L, P5 in anterior view; M, the left P5 Exp and Enp in anterior view.

Fig. 6 in Mongolodiaptomus mekongensis, a new species of copepod (Copepoda, Calanoida, Diaptomidae) from temporary waters in the floodplain of the lower Mekong River Basin

Fig. 6. Mongolodiaptomus mekongensis, new species, male. A, habitus, dorsal view; B, urosome, right lateral view; C, urosome, ventral view (black arrows indicate chitinous spines and ridge on right caudal ramus); D, the right antennule: D1, segment 1–12; D2, segment 13–22. Scale bar = 100 µm.

Fig. 6 in A new species of copepod (Copepoda: Calanoida) from the floodplain of the lower Mekong River Basin in Thailand and Cambodia, with an amended diagnosis of the genus Dentodiaptomus Shen & Tai, 1964

Fig. 6. Dentodiaptomus orientalis, new species, female: A, habitus, dorsal view; B, pediger 4–5 and urosome, dorsal view; C, P5, posterior view; D, left P5 Exp-2–3, posterior view; E, P5, frontal view.

Fig. 3 in A new species of copepod (Copepoda: Calanoida) from the floodplain of the lower Mekong River Basin in Thailand and Cambodia, with an amended diagnosis of the genus Dentodiaptomus Shen & Tai, 1964

Fig. 3. Dentodiaptomus orientalis, new species, male: A, habitus, dorsal view; B, urosome, dorsal view; C, urosome, ventral view; D, right antennule (segments I–XXII).

Fig. 8 in A new species of copepod (Copepoda: Calanoida) from the floodplain of the lower Mekong River Basin in Thailand and Cambodia, with an amended diagnosis of the genus Dentodiaptomus Shen & Tai, 1964

Fig. 8. Dentodiaptomus javanus (A–F) and Phyllodiaptomus (Ctenodiaptomus) praedictus (G–H), male: A, habitus, dorsal view; B, C, G, P5, posterior view; D, right P5 basis and Exp-1, posterior view; E, right P5 Exp-2, posterior view; F, left P5 basis, Exp (white arrow points to a denticle on the inner margin of the Exp-2), and Enp, frontal view; H, intercoxal sclerite and left P5, posterior view.

Fig. 4 in A new species of copepod (Copepoda: Calanoida) from the floodplain of the lower Mekong River Basin in Thailand and Cambodia, with an amended diagnosis of the genus Dentodiaptomus Shen & Tai, 1964

Fig. 4. Dentodiaptomus orientalis, new species, male: A, left antennule; B, antenna; C, mandible; D, maxillule; E, maxilla; F, maxilliped.

Fig. 1. A in A new species of copepod (Copepoda: Calanoida) from the floodplain of the lower Mekong River Basin in Thailand and Cambodia, with an amended diagnosis of the genus Dentodiaptomus Shen & Tai, 1964

Fig. 1. A map showing the distribution of Dentodiaptomus orientalis, new species, from Thailand and Cambodia. Legend: black triangle = sampling location, black circle = city name.

Fig. 2 in A new species of copepod (Copepoda: Calanoida) from the floodplain of the lower Mekong River Basin in Thailand and Cambodia, with an amended diagnosis of the genus Dentodiaptomus Shen & Tai, 1964

Fig. 2. Dentodiaptomus orientalis, new species, male: A, habitus, dorsal view; B, P5, posterior view; C, P5, frontal view; D, left P5 Enp and Exp, posterior view.

Fig. 7 in A new species of copepod (Copepoda: Calanoida) from the floodplain of the lower Mekong River Basin in Thailand and Cambodia, with an amended diagnosis of the genus Dentodiaptomus Shen & Tai, 1964

Fig. 7. Dentodiaptomus orientalis, new species, female: A, pediger 5 and genital double-somite, dorsal view; B, P5, posterior view; C, P5, frontal view.

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Fig. 2 in Minyclupeoides Dentibranchialus, A New Genus And Species Of River Herring From The Lower Mekong Basin Of Cambodia (Teleostei: Clupeidae: Pellonulinae)

Fig. 2. Minyclupeoides dentibranchialus new species: Jaw bones (left); first gill arch with denticulate gill rakers (right).

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Fig. 1 in Minyclupeoides Dentibranchialus, A New Genus And Species Of River Herring From The Lower Mekong Basin Of Cambodia (Teleostei: Clupeidae: Pellonulinae)

Fig. 1. Minyclupeoides dentibranchialus new species: Composite drawing of several specimens superficially stained with alizarin. Inset above left: humeral scale with lateral line pore; inset above right: upper procurrent caudal scale-like sheath (median structure) with first upper procurrent caudal fin ray (paired structure).

FIGURE 4 in Biodiversity assessment of the Lower Mekong Basin: evolutionary novelties in gemmular morphotraits of Genus Corvospongilla (Porifera: Spongillida) with description of a new species from Khorat Plateau, and biogeographic notes

FIGURE 4. Corvospongilla lampaoensis sp. nov. (Spongillida) holotype CNR–POR–FW 120 from Thailand. A, Light Microscopy micrographs. Skeletal microscleres pseudobirotules with smooth, thin shaft and pseudorotules as curved hooks at tips. B, Scanning Electron Micrographs of microscleres.

FIGURE 2 in Biodiversity assessment of the Lower Mekong Basin: evolutionary novelties in gemmular morphotraits of Genus Corvospongilla (Porifera: Spongillida) with description of a new species from Khorat Plateau, and biogeographic notes

FIGURE 2. Habitat of Corvospongilla lampaoensis sp. nov. (Spongillida) from the Lower Mekong Basin at Lam Pao Thepsuda Bridge site 4 (Figure 1) type locality, in the Lam Pao Reservoir (Kalasin Province, Thailand). A–B, Manmade substrata on rafts for fish cage culture. C, Encrusting habitus in dry condition of CNR–POR–FW 120 holotype in situ on a plastic buoy (black dashed line square, Figure 2C) after sampling of a part (see also Figure 3A–B), and paratype CNR-POR-FW 121-12 (black asterisk) on a rubber tire.

FIGURE 3 in Biodiversity assessment of the Lower Mekong Basin: evolutionary novelties in gemmular morphotraits of Genus Corvospongilla (Porifera: Spongillida) with description of a new species from Khorat Plateau, and biogeographic notes

FIGURE 3. Corvospongilla lampaoensis sp. nov. (Spongillida) holotype CNR-POR-FW 120 from Thailand. SEM micrographs (C–F). A, Dry encrusting thin specimen (top view). B, Dry encrusting thin specimen with sessile gemmules at the level of basal spongin plate (bottom view). C, Skeletal meshwork of acanthoxeas megascleres. D, Skeletal meshwork of acanthoxeas megascleres (top view). E, Acanthoxeas megascleres with microspiny surface except at abruptly pointed tips. F, Acanthoxeas megascleres, pseudobirotules microscleres (arrows) and probable larval spicule (asterisk).

FIGURE 6 in Biodiversity assessment of the Lower Mekong Basin: evolutionary novelties in gemmular morphotraits of Genus Corvospongilla (Porifera: Spongillida) with description of a new species from Khorat Plateau, and biogeographic notes

FIGURE 6. Corvospongilla lampaoensis sp. nov. (Spongillida) holotype CNR-POR-FW 120 from Thailand. Scanning Electron Micrographs. Gemmular theca architecture of sessile gemmules adhering to basal spongin plate. A, Entire gemmule with few, scattered megascleres (top view). B, Sessile gemmule with scattered thin laminae lining upper portion of theca (white arrow) and smooth, compact inner layer (white arrowhead) and chambered pneumatic layer in basal portion of theca (inner view, cross section). C, Entire sessile gemmule with fragments of basal spongin plate (arrow). D, Gemmular theca (white arrowhead) armed by gemmuloscleres in variably oriented multilayers and scantly developed outer layer and pneumatic layer (cross section); thecamoebae (white arrow). E, Outer layer as a thin pellicle covering spicules (white arrowhead), pneumatic layer absent and inner layer scantly developed (white arrow) in a strongly armed gemmular theca (cross section). F, Pneumatic layer scattered among gemmuloscleres (right) and smooth, compact inner layer of gemmular theca (white arrowhead, cross section). G, Pneumatic layer thin and continuous with dense, minute rounded chambers among few gemmuloscleres in gemmular theca with well-developed outer layer (white arrow, cross section).