Kataphraktosaurus ungerhamiltoni ROJAS-RUNJAIC, BARRIO-AMORÓS, SEÑARIS, RIVA & CASTROVIEJO-FISHER, 2021
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Kataphraktosaurus ungerhamiltoni
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| Higher Taxa | Gymnophthalmidae (Cercosaurinae), Sauria, Gymnophthalmoidea, Squamata (lizards) |
| Subspecies | |
| Common Names | |
| Synonym | Kataphraktosaurus ungerhamiltoni ROJAS-RUNJAIC, BARRIO-AMORÓS, SEÑARIS, RIVA & CASTROVIEJO-FISHER 2021 |
| Distribution | Venezuela (Amazonas) Type locality: Caño Bejuco, near Tobogán del Cuao, Autana municipality, Amazonas state, Venezuela (5°05’58”N, 67°29’54”W; elevation 124 m) |
| Reproduction | |
| Types | Holotype: MHNLS 19960 (field number AJC 3014), adult male, collected on 14 July 2010 |
| Diagnosis | Diagnosis: Kataphraktosaurus ungerhamiltoni is defined by the unique combination of the following characteristics: (1) small body size (49 mm SVL; female unknown); (2) dorsal surface of head with large, weakly keeled, symmetrical scales; (3) snout acuminate, moderately long; (4) two subtriangular internasals, each one as long as wide; (5) two large pentagonal frontonasals, more than two times longer than wide; (6) prefrontals absent; (7) frontal scale single, hexagonal, double-keeled; (8) two pentagonal frontoparietals, single-keeled; (9) interparietal large, subpentagonal, well-differentiated; (10) parietals large, polygonal, paired, flanking interparietal; (11) occipitals not differentiated; (12) temporal scales not differentiated; (13) lower eyelid developed, with palpebral disc divided into 5–7 unpigmented scales; (14) six supralabials; (15) six infralabials; (16) postmental absent; (17) three pairs of enlarged chin shields; (18) collar distinct, containing six enlarged scales; (19) dorsal scales heterogeneous, with large, longitudinally keeled scales intercalated by small irregular, granular to flat scales; (20) paravertebral rows of enlarged scales continuous; (21) ventral scales pentagonal, keeled, mucronate, imbricated; (22) ventral scales arranged in 20 transverse and eight longitudinal rows; (23) femoral pores inserted in a clump of 4–5 scales; (24) six femoral pores (three on each side) in males (female unknown); (25) tail slightly compressed; (26) tail with six pairs of longitudinal ridges around it (two dorsal submedian, two dorsolateral, two median laterals, two lower lateral, two ventrolateral, and two ventral submedian); (27) two subcaudal scales by verticil; (28) three keeled scales on the dorsal submedian ridge by verticil; (29) forelimbs and hind limbs pentadactyl; (30) subdigital lamellae on fourth finger 15–16; (31) subdigital lamellae on fourth toe 21–22 (32) digits clawed; (Rojas-Runjaic et al. 2021). |
| Comment | Type species: Kataphraktosaurus ungerhamiltoni is the type species of the genus Kataphraktosaurus ROJAS-RUNJAIC et al. 2021. |
| Etymology | This species is named in honor of Mr. Felix Unger-Hamilton, in recognition of his support and interest in the study and conservation of Venezuelan biodiversity and the description of new species. |
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