Alopecion guttatum (SMITH, 1843)
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Higher Taxa | Lamprophiidae, Colubroidea, Caenophidia, Alethinophidia, Serpentes, Squamata (snakes) |
Subspecies | |
Common Names | E: Spotted Rock Snake, Spotted House Snake |
Synonym | Lycodon guttatus SMITH 1843: 38 Alopecion annulifer DUMÉRIL & BIBRON 1854: 416 Alopecion annulifer — GÜNTHER 1858: 196 Boodon guttatus — BOULENGER 1891: 14 Boodon guttatus — BOULENGER 1893: 331 Boaedon guttatus — LOVERIDGE 1936 Boaedon guttatus — HEWITT 1937: 36 Boaedon guttatus — ROSE 1950: 276 Boaedon guttatus — ISEMONGER 1955: 68 Boaedon guttatus — FITZSIMONS 1962: 116 Lamprophis guttatus — BOYCOTT 1992 Lamprophis guttatus — KELLY et al. 2011 Boaedon guttatus — WALLACH et al. 2014: 96 Alopecion guttatum — TIUTENKO et al. 2022 |
Distribution | Republic of South Africa (Cape Province, E Transvaal, Swaziland), Namibia Type locality: beyond Kurrichane, Cape Colony. |
Reproduction | oviparous |
Types | Type: BMNH 1946.1.23.16 (and possibly additional specimens). |
Diagnosis | Diagnosis: “Size small, usually not exceeding 600 mm in total length; body moderately elongated; tail moderate, 18–21% of total length; head of moderate size, in dorsal view egg-shaped or slightly isosceles trapezoidal, posteriorly much broader than neck, markedly depressed; snout blunt, in dorsal view square-shaped, slightly curved down in lateral view; eye moderate to large, with vertically elliptical pupil, capable of shrinking to a thin vertical streak; preocular 1; postoculars 2–3; temporals 1+2; rostral small, semi-circular, not visible or barely visible from above; upper labials 7, 3rd–5th in contact with eye; lower labials 7–9; anterior chinshields significantly (up-to two times) larger than posterior; gulars irregular or arranged in up-to 4 pairs between posterior chinshields and first ventral; midbody scale rows 21–23, vertebral row not enlarged; dorsal scales smooth, without apical pits; ventrals 186–230; subcaudals in 46–72 pairs; anal entire; maxilla with 15–17 teeth; 1st maxillary tooth short, approximately equal in length to the last; teeth 2–6 gradually increase in length up to the 5th which is about twice as long as the 2nd; a well-defined diastema after the 6th tooth, followed by 11–12 smaller teeth, gradually decreasing in length posteriorly; mandibular teeth increase in length from 2nd to 6th (which is the longest) then decrease to 8th which is followed by 11–15 shorter teeth gradually decreasing in length posteriorly; hemipenis not forked. Colour: regionally variable; basic dorsal pattern consists of blotches or spots, arranged in either alternating or adjacent pairs on yellow-brown or grey-brown background; venter off-white or pale-yellow, with occasional greyish spots.” (Tiutenko et al. 2022: 248) |
Comment | Type species: Lycodon guttatus SMITH 1843: 38 is the type species of the genus Alopecion DUMÉRIL & BIBRON 1854. Distribution: for a map of the genus see Tiutenko et al. 2022: 258 (Fig. 12). |
Etymology | Named after Latin guttatus, a, um, ‘spotted, speckled’, in reference to the spotted coloration of this taxon. |
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