Anolis robinsoni CHAVES, RYAN, BOLAÑOS, MÁRQUEZ, KÖHLER & POE, 2023
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Anolis robinsoni
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| Higher Taxa | Anolidae, Iguania, Sauria, Squamata (lizards) |
| Subspecies | |
| Common Names | |
| Synonym | Anolis robinsoni CHAVES, RYAN, BOLAÑOS, MÁRQUEZ, KÖHLER & POE 2023 |
| Distribution | Costa Rica (San José) Type locality: Palma stream bridge 5.1 km south of Santa Marta de Santiago de Puriscal, 9.79230 N, -84.39530 W, ca. 800 masl, San José Province, Costa Rica |
| Reproduction | |
| Types | Holotype. UCR 2463 (Fig. 4) collected 15 March 1969 by Oscar Blanco, an adult male. Paratypes (all from Costa Rica: San José Province). Adult males: SMF 92437 (collected 27 March 2010 by Gunther Köhler) from Zona Protectora El Rodeo (Universidad para la Paz), 9.90392 N, -84.28169 W, ca. 825 masl; SMF 92438 (collected 27 March 2010 by Gunther Köhler) from Zona Protectora El Rodeo (Universidad para la Paz), 9.90355 N, -84.28192 W, ca. 780 masl; UCR 2464 (same data of the holotype); UCR 16048 (collected 28 October 2001 by Mason J Ryan, Robert Puschendorf and Brian Kubicki) from the west slope of the Cerros de Escazú, Río Jaris (9.88460 N, - 84.27650 W, 500 ca. masl), close to the Zona Protectora El Rodeo (Universidad para la Paz); MCZ R-186162 (collected 27 December 2007 by Steve Poe and Mason J. Ryan) from Quebrada La Palma in Alto Palma de Puriscal (9.78890 N, -84.39440 W, ca. 1000 masl). Adult females: SMF 92439, 92450–51 (collected 27 March 2010 by Gunther Köhler) from Zona Protectora El Rodeo (Universidad para la Paz), 9.90364 N, -84.28182 W, ca. 820 masl; UCR 2558 (collected 15 March 1969 by Oscar Blanco and Douglas Robinson) and MCZ R-186161 (collected 27 December 2007 by Steve Poe and Mason J. Ryan) both of them from Quebrada La Palma in Alto Palma de Puriscal (9.78890 N, -84.39440 W, ca 1000 masl). |
| Diagnosis | Diagnosis. Anolis robinsoni sp. nov. is a semiaquatic anole that is distinguished from all other Anolis of Central America by male dewlap coloration (chocolate brown with ill-defined brick red horizontal streaks, Fig. 4B). The only other species with which A. robinsoni sp. nov. might be confused in the field are the other Middle American semiaquatic anoles A. aquaticus, A. lionotus, A. poecilopus, and A. barkeri. Anolis lionotus and A. poecilopus are easily distinguished from A. robinsoni sp. nov. by male dewlap color (dull orange-yellow in these species, chocolate brown with ill-defined brick red horizontal streaks in A. robinsoni sp. nov.), presence of enlarged postcloacal scales in most males (absent in A. robinsoni sp. nov.), and presence of a longitudinal zone of 10–24 enlarged middorsal scales (0–3 scales enlarged in A. robinsoni sp. nov.). Anolis aquaticus may be distinguished from A. robinsoni sp. nov. by male dewlap color (orange-red with yellow in A. aquaticus, Fig. 5A) and possession of larger dorsal scales of the head and body (e.g., 15–20 scales across the snout between second canthals in A. robinsoni sp. nov. (Fig. 4C), 7–14 in A. aquaticus; Fig. 5B, Table 1) and the size of the middorsal caudal row scales relative to adjacent scales (no more than two times in A. robinsoni sp. nov. (Fig. 4D), more than three times in A. aquaticus (Fig 5C). Anolis barkeri is most easily distinguished from A. robinsoni sp. nov. by its larger size (maximum SVL 91 mm in A. barkeri, 74 mm in A. robinsoni sp. nov.), lack of distinctly expanded toe pads (ratio width of expanded pads/width of distal phalanx 1.8–2.2 in A. robinsoni sp. nov. versus 1.4–1.6 in A. barkeri), and presence of a double row of middorsal caudal scales (single row in A. robinsoni sp. nov.). (Chaves et al. 2023) |
| Comment | |
| Etymology | Named in honor of the late Douglas C. Robinson, who contributed enormously to the herpetological knowledge of Costa Rica through extensive field collections and by inspiring a generation of Costa Rican biologists. He received his Ph.D. from Texas A&M University in 1968 and studied the Mexican semiaquatic anole, Anolis barkeri. |
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