Research Article

Morphological Variation of Sordellina punctata (Peters, 1880) with Notes on the Phylogenetic Position of the Genus within the Family Dipsadidae (Serpentes)

Table 1

Meristic and morphometric variation of Sordellina punctata. Data expressed by mean ± standard deviation (amplitude).

Meristic and
morphometric data
Total ( 𝑛 = 6 1 )Males ( 𝑛 = 1 7 )Females ( 𝑛 = 4 4 )

Ventrals 1 5 4 . 9 7 ± 1 1 . 2 8 (135–174) 1 4 9 ± 9 . 7 1 (135–161) 1 5 7 . 3 3 ± 1 1 . 2 6 (137–174)
Subcaudals 4 5 . 5 1 ± 5 . 9 8 (36–57) 4 9 . 7 6 ± 4 . 5 2 (40–57) 4 3 . 7 0 ± 5 . 6 3 (36–56)
Supralabials 8 . 0 3 ± 0 . 1 8 (7–9)
Infralabials 8 . 1 0 ± 0 . 4 4 (7–9)
Gulars 4 . 9 3 ± 0 . 4 0 (4–6)
Head length (mm) 1 3 . 8 2 ± 2 . 4 9 (8.9–18.24) 1 2 . 0 3 ± 2 . 0 5 (8.94–16.27) 1 4 . 5 6 ± 2 . 2 9 (8.9–18.24)
Tail length (mm) 7 5 . 3 ± 2 0 . 9 (30–115) 7 0 . 9 ± 2 2 . 7 (90.7–109) 7 7 . 2 ± 2 0 . 1 (30–115)
Snout-vent length (mm) 3 7 6 . 9 ± 1 0 0 . 1 (157–599) 3 1 5 . 7 ± 9 7 . 6 (170–526) 4 0 1 . 6 ± 9 1 . 0 (157–599)
Interocular width (mm) 4 . 5 9 ± 0 . 8 3 (2.66–6.78) 4 . 2 6 ± 0 . 9 0 (2.75–6.78) 4 . 7 4 ± 0 . 7 6 (2.66–5.93)
Width of head—quadrate (mm) 6 . 8 0 ± 1 . 3 4 (3.64–9.63) 6 . 0 3 ± 1 . 1 4 (4.51–9.42) 7 . 1 2 ± 1 . 2 9 (3.64–9.63)