taxonID	type	description	language	source
03EE87F9FFC3DC3A7894F880FD8CF80C.taxon	description	(Figs. 1 – 9)	en	Savatenalinton, Sukonthip (2024): A new species of the genus Gurayacypris Battish, 1987 (Crustacea: Ostracoda: Notodromadidae) from a rice field in northeast Thailand. Raffles Bulletin of Zoology 72: 280-293, DOI: 10.26107/RBZ-2024-0023
03EE87F9FFC3DC3A7894F880FD8CF80C.taxon	materials_examined	Material examined. Holotype: Male, soft parts dissected in glycerine on a sealed slide, valves stored dry on a micropalaeontological slide (MSU-ZOC. 398), rice field, Kantharawichai District, Maha Sarakham Province, Thailand (16.267 N, 103.252 E), coll. S Savatenalinton, 15 June 2021. Allotypes: Female, stored like the holotype (MSU-ZOC. 402), same data as holotype. Paratypes: 3 males, soft parts dissected in glycerine on a sealed slide, carapaces stored dry on micropalaeontological slides (MSU-ZOC. 399 – 401); 2 females, soft parts dissected in glycerine on a sealed slide, carapaces stored dry on micropalaeontological slides (MSU-ZOC. 403 – 404); c. 3 males and 3 females in 70 % ethanol, deposited in the Science Faculty Museum (MSU, Thailand) and 2 males and 2 females in 70 % ethanol deposited at the Lee Kong Chian Natural History Museum (Singapore), same data as holotype.	en	Savatenalinton, Sukonthip (2024): A new species of the genus Gurayacypris Battish, 1987 (Crustacea: Ostracoda: Notodromadidae) from a rice field in northeast Thailand. Raffles Bulletin of Zoology 72: 280-293, DOI: 10.26107/RBZ-2024-0023
03EE87F9FFC3DC3A7894F880FD8CF80C.taxon	description	Measurements (μm). Male. Cp (n = 3): L = 806 – 832, H = 577 – 580, W = 442 – 458, LV (n = 2): L = 823 – 826, H = 574 – 577, RV (n = 2): L = 829 – 832, H = 577 – 581. Female. Cp (n = 2): L = 794 – 800, H = 580 – 582, W = 457 – 459, LV (n = 2): L = 828 – 831, H = 568 – 571, RV (n = 2): L = 822 – 825, H = 568 – 571.	en	Savatenalinton, Sukonthip (2024): A new species of the genus Gurayacypris Battish, 1987 (Crustacea: Ostracoda: Notodromadidae) from a rice field in northeast Thailand. Raffles Bulletin of Zoology 72: 280-293, DOI: 10.26107/RBZ-2024-0023
03EE87F9FFC3DC3A7894F880FD8CF80C.taxon	diagnosis	Diagnosis. Cp in lateral view subovate, sexually dimorphic, female posteroventral spur on LV subtriangular with pointed tip, valve surface not strongly ornamented, third segment of A 1 with two short setae, natatory setae of A 2 long, penultimate segment of A 2 divided and G 1 seta with skewed tip, Mx 1 third endite with six Zahnborsten, terminal part of female T 1 palp with broad, dome-shaped terminal part and pointed apical tip, masticatory processes of T 1 with 14 bristles, distal margin of basal segment of male T 1 left palp without projection, T 2 sexually dimorphic with more elongated in male and with three longer setae on male terminal segment, CR without sa seta, ramus more elongated and curved in male, CR attachment with several distal loops, Hp subovate, ms short (not protruding beyond edge of ls) with gently curved dorsal margin, ls subtriangular with pointed tip directing outward, ZO with numerous spiny whorls. Differential diagnosis. Gurayacypris danielopoli, new species, can mainly be distinguished from G. kangraensis by the more rounded dorsal part of Cp in lateral view, the larger Cp size, the protruded triangular spur on the postero-ventral part of the female LV (small blunt-tipped spur in G. kangraensis), the absence of a pointed protrusion on the distal margin of the basal segment of the left prehensile palp and the triangular ls of the Hp with a pointed tip directed outwards.	en	Savatenalinton, Sukonthip (2024): A new species of the genus Gurayacypris Battish, 1987 (Crustacea: Ostracoda: Notodromadidae) from a rice field in northeast Thailand. Raffles Bulletin of Zoology 72: 280-293, DOI: 10.26107/RBZ-2024-0023
03EE87F9FFC3DC3A7894F880FD8CF80C.taxon	description	Description of male. Cp in lateral view (Fig. 1 A, E – F) subovate, greatest height situated c. mid-length, dorsal margin evenly arched, anterior margin broadly rounded with anteroventral corner, posterior margin more narrowly rounded with apex at c. mid-height, ventral margin straight; eye tubercle not prominent, situated at antero-dorsal part; valve surface not strongly ornamented, set with tiny pustules anteriorly, weak reticulation (stronger in posterior part than in other parts) and rimmed pore setae (Fig. 1 B). Cp in dorsal view (Fig. 1 C, G – H) elliptical, greatest width situated at mid-length, posterior part more broadly rounded than anterior one, both anterior and posterior extremities with small pointed tips. Cp in ventral view (Fig. 1 D, I – J) elliptical with flattened ventral surface and strong oval concavity posteriorly, forming sharply defined oval structure with irregularly curved margins, strongly concave area situated in third part of length. Outer lists prominent, anteriorly curved outwards towards around mouth zone. LV in interior view (Fig. 3 G, I – J, 4 A) with flange positioned anteriorly and strong concavity at postero-ventral corner, anterior selvage inwardly displaced, calcified inner lamella narrow with one inner list, groove present along ventral margin. RV in interior view (Fig. 3 H, K – L, 4 B) as in LV, but anterior flange wider and groove present along anterior and ventral margins. A 1 (Fig. 5 A): 7 - segmented; first segment with a long subapical dorsal seta (reaching beyond tip of next segment), two unequally long subapical ventral setae, Wouters organ absent. Second segment wider than long, with one markedly long dorso-apical seta (reaching tip of next segment), Rome organ absent. Third segment very long bearing two (one dorso-, one ventro-) apical setae, both setae remarkably short. Fourth segment with two long dorsal setae and one very short ventral seta. Fifth segment dorsally with two long setae, ventrally with two short setae, the longer one reaching slightly beyond middle of next segment, another one spine-like. Penultimate segment with four long setae. Terminal segment with three (two long, one short) apical setae and an aesthetasc ya, length of shortest seta c. 2 / 3 of aesthetasc ya. A 2 (Fig. 5 B): protopodite with one proximal seta and two ventral setae. Exopodite with three (one long, two short) setae, the long one reaching tip of first endopodal segment. First endopodal segment with five long natatory setae and accompanying very short seta (reaching c. 1 / 5 of penultimate segment), aesthetasc Y slender and long (reaching tip of the segment), ventro-apical seta long (reaching tip of terminal segment). Penultimate segment divided; proximal subsegment with two short dorsal setae (the longer seta reaching mid-length of next segment, length of short seta c. 1 / 2 of long one) and two ventral setae (t setae), the long one reaching slightly beyond tip of next segment, length of shorter one c. 4 / 5 of long one); distal subsegment apically with three claws (G 1 – G 3), claw G 1 with skewed tip and reduced in length (shorter than that of female), claw G 3 reduced to short seta (length c. 2 / 3 of that of terminal segment) and z 1 – z 3 setae, z 1 seta modified to long seta (short seta in female), z 2 short (not reaching middle of next segment), z 3 intermediate in length (reaching tip of next segment). Terminal segment very elongated with two claws (GM and Gm) and an aesthetasc y 3, g-seta not seen, claw GM slender, seta-like and slightly shorter than claw Gm, length of aesthetasc y 3 c. half-length of Gm, accompanying seta slightly longer than aesthetasc y 3. Md (Fig. 6 A – E): Md-coxa (Fig. 6 A) slender distally set with rows of teeth (large dorsally and smaller ventrally) and with one dorso-subapical seta, the latter small and short (not reaching base of teeth). Md-palp (Fig. 6 B): first segment with two large setae (S 1 and S 2), one slender, long seta and α-seta with broad first half, narrower second half and long needle-like tip (Fig. 6 C), S 1 seta smaller than S 2 seta (Fig. 6 E). Second segment dorsally with two unequal long apical setae; ventrally with a group of four hirsute setae (Fig. 6 D) and β-seta, the latter slim and dome-shaped with a pointed tip (Fig. 6 C). Penultimate segment consisting of three groups of setae: dorsally with a group of four subapical setae (intermediated length); laterally with an apical γ – seta and three further thin and short apical setae, the former thin and short (reaching slightly beyond tip of terminal segment) (Fig. 6 C); ventrally with one hirsute, large, and long apical setae. Terminal segment elongated (length c. two times of width) bearing two long claws and two shorter setae. Mx 1 (Fig. 6 F) with a 2 - segmented palp, three endites and a branchial plate; basal segment of palp with a group of four short, but unequal, apical setae and two (one short, one longer) subapical setae, the short one reaching slightly beyond tip of basal segment), terminal segment subquadrate, with three claws and three setae. Third endite bearing six large bristles (Zahnborsten) with distal serration. First endite basally with two remarkably long and large setae. T 1 (Fig. 7 A – B): protopodite with two a-setae, distally with 14 hirsute setae (10 apically, four subapically), prehensile palps (endopodites) strongly asymmetrical. Left prehensile palp (Fig. 7 A) smaller than right one, with first segment subquadrate-shaped, second segment elongated with blunt tip. Right prehensile palp (Fig. 7 B) with first segment very elongated, second segment long and thin, distally narrower towards pointed tip. T 2 (Fig. 7 D) elongated, without d setae and sexually dimorphic (stubbier in female — Fig. 7 E). Second segment with one very short apical e-seta. Penultimate segment divided, proximal segment (a) bearing one very short apical f-seta; distal segment (b) with short spine-like apical g-seta. Terminal segment with a claw h 2 and two (one dorsally, one ventrally) long apical h 1 and h 3 setae, the former transformed into claw and larger than h 2. T 3 (Fig. 8 A): first segment with d 1, d 2 and dp setae, all setae intermediate in length with needle-like tip. Second segment with one long apical e-seta (almost reaching tip of next segment). Third segment with medially one long f-seta (reaching slightly beyond tip of terminal segment). Terminal segment without pincer organ and bearing three long setae (h 1 – h 3), h 1 and h 2 setae claw-like, h 3 seta reflexed with length c. 4 / 5 of that of third segment. CR (Fig. 8 B) elongated, without sa seta and sexually dimorphic with more elongated and curved ramus in male (shorter and less curved ramus in female – Fig. 8 C). Claws Ga and Gp thin and very long, claw Gp slightly shorter than claw Ga, sp seta long (length c. 1 / 3 of that of claw Ga), male sp seta shorter than that of female (reaching beyond mid-length of claw Ga – Fig. 8 C). CR attachment (Fig. 8 D – E) complex with several distal loops, main branch with few small branching. Hp (Fig. 9 A – B) subovate, ms short (not protruding beyond edge of ls) with gently curved dorsal margin, ls large, subtriangular with pointed tip directing outward; internal postlabyrinthal spermiduct without loop. ZO (Fig. 9 C) elongated with numerous spiny whorls and funnel-shaped ends. Description of female. Cp and valves (Figs. 2, 3 A – F, 4 C – D) generally as in male, but obviously different in postero-ventral part of valves. Postero-ventral part of LV with protruded triangular spur (sharply curved and without spur in male), postero-ventral part of RV gently curved with rounded corner (sharply curved in male). Cp in ventral view with less strong posterior concavity than that of male. All limbs as in male, except for last two segments of A 2 (Fig. 5 C), T 1 (Fig. 7 C), T 2 (Fig. 7 E) and CR (Fig. 8 C). Longest t setae on penultimate segment of A 2 longer than those of male; z 1 seta shorter, claw G 1 long with skewed tip, claw G 3 long, seta-like (Fig. 5 C). T 1 palp (endopodite) elongated with broad, dome-shaped terminal part and pointed apical tip (Fig. 7 C). T 2 less elongated with claw-like h 2 seta long, but shorter than that of male; h 1 and h 3 setae shorter than h 2 seta, h 3 seta claw-like (Fig. 7 E). CR shorter than that of male, sp seta remarkably long, ramus less elongated and slightly curved (Fig. 8 C).	en	Savatenalinton, Sukonthip (2024): A new species of the genus Gurayacypris Battish, 1987 (Crustacea: Ostracoda: Notodromadidae) from a rice field in northeast Thailand. Raffles Bulletin of Zoology 72: 280-293, DOI: 10.26107/RBZ-2024-0023
03EE87F9FFC3DC3A7894F880FD8CF80C.taxon	etymology	Etymology. The species is named in honor of Prof. Dr. Dan L. Danielopol (University of Graz, Austria) in recognition of his outstanding work on ostracods.	en	Savatenalinton, Sukonthip (2024): A new species of the genus Gurayacypris Battish, 1987 (Crustacea: Ostracoda: Notodromadidae) from a rice field in northeast Thailand. Raffles Bulletin of Zoology 72: 280-293, DOI: 10.26107/RBZ-2024-0023
03EE87F9FFC3DC3A7894F880FD8CF80C.taxon	biology_ecology	Ecology. The Indian G. kangraensis was taken from a permanent water body. However, the Thai new species was found in a rice field, which is a man-made temporary water body. Apart from other accompanying ostracod species in the type locality, large branchiopods (Cyzicus sp. and Lynceus sp.) which typically inhabit temporary water bodies, were also encountered in the type locality.	en	Savatenalinton, Sukonthip (2024): A new species of the genus Gurayacypris Battish, 1987 (Crustacea: Ostracoda: Notodromadidae) from a rice field in northeast Thailand. Raffles Bulletin of Zoology 72: 280-293, DOI: 10.26107/RBZ-2024-0023
03EE87F9FFCBDC3B7B62F84BFA27F7B5.taxon	description	G. kangraensis Gurayacypris danielopoli, new species, differs from G. kangraensis in many aspects of its valves and soft parts. In the male G. danielopoli, new species, the Cp in dorsal view is tumid and the greatest width is post mid-length whereas in G. kangraensis, it is elliptical and the greatest width is at mid-length. The posterior extremity of the new species possesses a tiny pointed tip, but in G. kangraensis, this part is rounded. The female Cp shape in lateral view also demonstrates the difference between these two species. Gurayacypris danielopoli, new species, has a subglobular shape with a strongly arched dorsal margin while in G. kangraensis, the shape is subquadrate with a slightly arched dorsal margin. Although both species have a flange (spur) on the female postero-ventral part, the aspect of this structure is different. It is subtriangular with a pointed tip in the Thai species, but it is tiny and subquadrate, with a blunt tip in the Indian species. The Cp size of G. danielopoli, new species, (806 – 832 μm in male, 794 – 800 μm in female) is also larger than G. kangraensis (760 μm in male, 700 μm in female) (see Battish, 1987). In addition, the differences can be seen in the morphology of the soft parts, especially the female and male T 1 palp, the male T 2, and the Hp. The female T 1 palp of both species is large, but it is smaller in G. danielopoli, new species. The tip of this palp bears two small and unequal bristles in G. kangraensis while G. danielopoli has a broad, dome-shaped seta with pointed apical tip. The T 1 left palp of male of G. kangraensis possesses a pointed projection on the distal margin of the basal segment, whereas there is no projection on this part in G. danielopoli, new species. The h 3 seta on the male T 2 is long in G. kangraensis, but it is shorter in the new species. In G. danielopoli, new species, the Hp is subovate and the ms is short (not protruding beyond edge of ls), with a gently curved dorsal margin, while in G. kangraensis the ms extends over the margin of the ls and has a strongly curved dorsal margin. Additionally, the ls of the new species is subtriangular with a pointed tip directed outward but, in G. kangraensis, this part bears two circular lobes; one is small and appearing on the inner side, another one is large and located on the outer side. The number of bristles on the masticatory processes of the female T 1 is seven in G. kangraensis whereas it is 14 in G. danielopoli, new species. Nevertheless, this character should be used with caution as these bristles are small and densely arranged which could affect the observation of the actual number.	en	Savatenalinton, Sukonthip (2024): A new species of the genus Gurayacypris Battish, 1987 (Crustacea: Ostracoda: Notodromadidae) from a rice field in northeast Thailand. Raffles Bulletin of Zoology 72: 280-293, DOI: 10.26107/RBZ-2024-0023
03EE87F9FFCDDC3C783EFF76FD78F8B3.taxon	description	Notodromadinae genera A key indicative character of the genus Gurayacypris is the presence of a scalloped line of concrescence which is not found in any other genera of Notodromadinae or in other subfamilies of the family Notodromadidae. This structure can be seen under a light microscope. Based on the aspects of eye tubercles and valve surface, Gurayacypris resembles Notodromas and Argentodromas as these three genera have improminent eye tubercles and their valve surfaces are not strongly ornamented. However, Gurayacypris is more similar to Notodromas than to Argentodromas because the former two have a sexually dimorphic Cp, unlike Argentodromas (see Smith & Kamiya, 2014; Diaz & Martens, 2018). In Cypridoidea, sexual dimorphism in the Cp shape has been recognised in Candonidae (e. g., Fabaeformiscandona subacuta (Yang, 1982), F. dolabella Smith & Janz, 2008, F. pedana Smith & Janz, 2008; see Smith & Kamiya, 2007; Smith & Janz, 2008; Escrivá et al., 2012), Ilyocyprididae (e. g., Ilyocypris angulata Sars, 1903, I. dentifera Sars, 1903, I. thailandensis Savatenalinton, 2021; see Smith et al., 2019; Savatenalinton, 2021) and Notodromadidae. Among these three families, Notodromadidae shows the most distinctive sexual dimorphism in the Cp but which occurs only in two genera (see Battish, 1987; Smith & Kamiya, 2014; present study). Another significant feature of Gurayacypris is the sexual dimorphism of the T 2 which is a rare feature as it appears in very few species. Among Notodromadidae genera, such a feature of the T 2 has been seen only in Gurayacypris, which makes it a diagnostic character for the genus at present. A key to the genera of the subfamily Notodromadinae is also provided in this study. Sexual dimorphism of the T 2 The T 2 of non-marine ostracods is a walking limb with a similar morphology in both sexes. Beside in Gurayacypris, sexual dimorphism in the appendage has also been recorded in some Cyprididae members, e. g., Cyprinotus cassidula Smith & Chang, 2020 (see Smith & Chang, 2020) and Martensina thailandica Savatenalinton, 2022 (see Savatenalinton, 2022). Dimorphism is more pronounced in Gurayacypris than in the other two species, where the difference between sexes lies only in the more robust serration of the terminal claw in males. On the other hand, in Gurayacypris, the T 2 is slender in the male and stubby in the female. The three setae on the terminal segment are longer in males and are all slender; females have a claw (h 2) and two setae (h 1 and h 3). The female character state is typical for all other Cypridoidea. It is possible that, like the modification of the T 1 in males, this sexual dimorphism is related to the mating process. However, no observations to confirm this are available so far.	en	Savatenalinton, Sukonthip (2024): A new species of the genus Gurayacypris Battish, 1987 (Crustacea: Ostracoda: Notodromadidae) from a rice field in northeast Thailand. Raffles Bulletin of Zoology 72: 280-293, DOI: 10.26107/RBZ-2024-0023
