Ialtris haetianus (COCHRAN, 1935)
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Ialtris haetianus
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| Higher Taxa | Colubridae (Dipsadinae), Alsophiini, Colubroidea, Caenophidia, Alethinophidia, Serpentes, Squamata (snakes) |
| Subspecies | Ialtris haetianus haetianus (COCHRAN 1935) Ialtris haetianus perfector (SCHWARTZ & THOMAS 1965) Ialtris haetianus vaticinata (SCHWARTZ 1970) |
| Common Names | E: Hispaniolan Upland Racer, Haitian Ground Snake |
| Synonym | Darlingtonia haetiana COCHRAN 1935: 375 Darlingtonia haetiana — SCHWARTZ & HENDERSON 1991: 598 Darlingtonia haetianus — CROTHER 1999 Ialtris haetianus — HEDGES et al. 2009 Darlingtonia haetiana — GRAZZIOTIN et al. 2012 Darlingtonia haetiana — WALLACH et al. 2014: 209 Ialtris haetianus — KRYSKO et al. 2015 Ialtris haetiana haetiana (COCHRAN 1935) Darlingtonia haetiana haetiana — SCHWARTZ & HENDERSON 1991: 598 Ialtris haetianus haetianus — HEDGES et al. 2009 Ialtris haetianus perfector (SCHWARTZ and THOMAS 1965) Darlingtonia haetiana perfector — SCHWARTZ & HENDERSON 1991: 598 Ialtris haetianus perfector — HEDGES et al. 2009 Ialtris haetianus vaticinata (SCHWARTZ 1970) Darlingtonia haetiana vaticinata — SCHWARTZ & HENDERSON 1991: 599 Ialtris haetianus vaticinatus — HEDGES et al. 2009 |
| Distribution | Hispaniola (Haiti, SW Dominican Republic) haetiana: Hispaniola: Haiti, Massif de la Hotte; elevation 1000 - 5000 ft.; Type locality: Roche Croix, northeast foothills, Massif de la Hotte ( = Pic Macaya), Département de la Grand'Anse, Haiti. perfector: Hispaniola: Sierra de Baoruco and southern versant of Massif de la Selle; elevation 2100 - 4400 ft. vaticinata: Hispaniola: Haiti, the Montagne Noire; elevation 5000 - 5600 ft. |
| Reproduction | oviparous |
| Types | Holotype: MCZ 38252, collected by: Philip J. Darlington, Jr. Collection Date: October 1934 Holotype: MCZ 77217 [perfector] Holotype: MCZ 92099 [vaticinata] |
| Diagnosis | Diagnosis (genus Darlingtonia): Strongly bilobed, semicalyculated and semicapitated hemipenis with the capitulum restricted to the sulcate and lateral surface of the lobes, formed by papillate calyces; relatively long lobes, representing almost half the total length of the organ [GRAZZIOTIN et al. 2012]. Original diagnosis (genus Darlingtonia): Cochran 1935: 374 Description of the type (haetianus): Cochran 1935: 375 DESCRIPTION (species): Maximum SVL 305 mm; ventrals 132-144; subcaudals 45-54 in males, 40-51 in females; ventrals + subcaudals 178-193 in males, 174-191 in females; dorsal scale rows at midbody 19; dorsal scales without apical pits; supralabials usually 7; infralabials usually 8; loreal absent; preoculars usually 1/1; postoculars usually 2/2; temporals usually 1+2 (rarely 1 + 1); head short, blunt; eye relatively large. Dorsal ground color tan to dark brown; dorsum patternless, strongly lineate, or with scattered, pale, paramedian dorsal dots (each encompassing 3-4 dorsal scales) outlined with dark brown or black; venter ontogenetically variable: orange in juveniles to black in full adults, intermediate stages with intermediate conditions (Schwartz & Henderson 1991: 598). |
| Comment | This species may be reassigned to Arrhyton (see Hedges and Garrido 1992). Type species: Darlingtonia haetiana COCHRAN 1935 is the type species of the genus Darlingtonia COCHRAN 1935. GRAZZIOTIN et al. 2012 et al. argued that the synonymization of Darlingtonia with Ialtris (Hedges et al., 2009) is not justified given the significantly distinct, external and hemipenial morphologies of these genera. Further, Darlingtonia differs from Ialtris in having eight infralabials (nine in Ialtris), 132–144 ventrals (vs. 160– 192) and 40–54 subcaudals (vs. 57–115), an entire anal scale (vs. divided), no loreal scale (vs. present) and ungrooved teeth (vs. grooved) (data from Cochran, 1941; Schwartz and Rossman, 1976; and Schwartz and Henderson, 1991). |
| Etymology | Named after the type locality |
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