Mabuya grandisterrae HEDGES & CONN, 2012
Can you confirm these amateur observations of Mabuya grandisterrae?
|Higher Taxa||Scincidae, Mabuyinae, Scincoidea, Sauria, Squamata (lizards)|
|Common Names||Grande-Terre Skink|
|Synonym||Mabuya grandisterrae HEDGES & CONN 2012: 101|
Eumeces mabouia — DUMÉRIL & BIBRON, 1839:646 (part)
Mabouya cepedii — GRAY, 1845:95 (part)
Mabuya mabouia — BARBOUR, 1914:320 (part)
Mabuya sp. indet. — BARBOUR, 1930:105
Mabuya mabouia — BARBOUR, 1935:129 (part)
Mabuya mabouya mabouya — DUNN, 1936:544 (part)
Mabuya mabouia — BARBOUR, 1937:147 (part)
Mabuya mabouia — UNDERWOOD, 1963:83 (part)
Mabuya mabouya mabouya — SCHWARTZ & THOMAS, 1975:141 (part)
Mabuya mabouya mabouya — MACLEAN et al., 1977:38 (part)
Mabuya mabouya mabouya — SCHWARTZ & HENDERSON, 1988:150 (part)
Mabuya mabouya mabouya — SCHWARTZ & HENDERSON, 1991:457 (part)
Mabuya bistriata — POWELL et al., 1996:82 (part)
Mabuya bistriata — MALHOTRA & THORPE, 1999:84 (part)
Mabuya sloanii — MAYER & LAZELL, 2000:883 (part)
Mabuya mabouya — BREUIL, 2002:267 (part)
Mabuya mabouya — MIRALLES, 2005:49 (part)
Mabuya mabouya — HENDERSON & POWELL, 2009:292 (part)
Type locality: Pointe-à-Pitre, Grande-Terre, Guadeloupe
|Types||Holotype: BMNH 19220.127.116.118 (listed as M. agilis in BMNH catalog), an adult female, collected at Pointe-à-Pitre, Grande-Terre, Guadeloupe, by "Vitrac" and donated to the BMNH by F. Lataste; entered into the BMNH registry on 20 January 1920 (and thus collected at some time before that date). Paratypes (n = 4). Guadeloupe. USNM 11175, USNM 11249 and USNM 565045–46, May 1880, Guadeloupe, no specific locality (no collector information available).|
|Diagnosis||Diagnosis. Mabuya grandisterrae sp. nov. is characterized by (1) maximum SVL in males, 90.8 mm; (2) maximum SVL in females, 102.1 mm; (3) snout width, 2.34–3.44% SVL; (4) head length, 17.2–19.8% SVL; (5) head width, 12.5–13.9% SVL; (6) ear length, 1.26–2.08% SVL; (7) toe-IV length, 10.2–12.8% SVL; (8) prefrontals, two; (9) supraoculars, two (20%), three (80%); (10) supraciliaries, four; (11) frontoparietals, two; (12) supralabial below the eye, five (80%), six (20%); (13) nuchal rows, one; (14) dorsals, 54–61; (15) ventrals, 62–68; (16) dorsals + ventrals, 116–128; (17) midbody scale rows, 30–34; (18) finger-IV lamellae, 14–15; (19) toe-IV lamellae, 17–18; (20) finger-IV + toe-IV lamellae, 31–33; (21) supranasal contact, Y (80%), N (20%); (22) prefrontal contact, Y (20%), N (80%); (23) supraocular-1/frontal contact, Y; (24) parietal contact, Y; (25) pale middorsal stripe, N; (26) dark dorsolateral stripe, N; (27) dark lateral stripe, Y; (28) pale lateral stripe, N; and (29) palms and soles, dark (Tables 3–5).|
Within the Genus Mabuya, M. grandisterrae sp. nov. and the other three species inhabiting Guadeloupe and its islets (M. cochonae sp. nov., M. desiradae sp. nov., and M. guadeloupae sp. nov.), here placed in the M. guadeloupae sp. nov. species group, have a similarly-proportioned frontonasal scale that distinguishes them from other species in the genus (Fig. 34). Species in the M. guadeloupae sp. nov. species group have a longer frontonasal compared with M. montserratae sp. nov. (frontonasal length/head length 0.176–0.199 versus 0.165– 0.168) and a shorter frontonasal compared with other species in the genus (0.176–0.199 versus 0.205–0.239 in M. dominicana, M. hispaniolae sp. nov., and M. mabouya). In addition, M. grandisterrae sp. nov. differs from M. dominicana by lacking pale dorsolateral stripes and a well-defined pale lateral stripe (such stripes are present in M. dominicana). It is separated from M. hispaniolae sp. nov. by lacking well-defined pale lateral stripes (present in M. hispaniolae sp. nov.).
Mabuya grandisterrae sp. nov. differs from M. cochonae sp. nov., M. desiradae sp. nov., and M. guadeloupae sp. nov. by having a lower supraciliary-2/supraciliary-3 length ratio (1.67–1.79 versus 2.06–2.40; Fig. 36). It differs from M. cochonae sp. nov. in having fewer ventrals (62–68 versus 70), a shorter anterior loreal scale (1.35– 1.74% SVL versus 2.26–2.47% SVL; Fig. 37A), a shorter suture length between the upper secondary temporal and the parietal scale (1.59–1.93 versus 2.12–2.29% SVL; Fig. 37C), and a larger ear (1.26–2.08 versus 1.02–1.12% SVL). Mabuya grandisterrae sp. nov. differs from M. desiradae sp. nov. in having fewer dorsals (54–61 versus 62), fewer dorsals + ventrals (116–128 versus 130–132), and a shorter dark lateral stripe that extends one-third (versus two-thirds) of body. Mabuya grandisterrae sp. nov. differs from M. guadeloupae sp. nov. in having a wider head (12.5–13.9% SVL versus 11.6–12.0% SVL), a longer toe (toe-IV 10.2–12.8% SVL versus 8.77–9.72% SVL), a longer interloreal suture (0.90–1.16% SVL versus 0.64–0.85% SVL; Fig. 37B), a longer supralabial-7 (1.62– 2.00% SVL versus 1.36–1.44% SVL; Fig. 37D), and absence of dark dorsolateral stripes and well-defined pale lateral and dorsolateral stripes (those stripes present and well-defined in M. guadeloupae sp. nov.) [HEDGES & CONN 2012].
|Comment||Conservation: extremely rare and possibly extinct. No living individual of any of these species has been seen in recent decades (Hedges et al. 2016). Critically Endangered and possibly extinct (CR A2ace).|
Synonymy: The validity of this species has been challenged by Miralles et al. 2017 who considered it as indistinguishable from and thus as a synonym of M. desiradae. This in turn has been challenged by Hedges et al. 2019.
Abundance: only known from its original description (Meiri et al. 2017).
|Etymology||The species name (grandisterrae) is a feminine genitive singular noun, referring to the distribution of the species on Grand-Terre, Guadeloupe.|