Panolopus unicolor SCHOOLS & HEDGES, 2024
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Panolopus unicolor
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| Higher Taxa | Diploglossidae, Diploglossa, Anguimorpha, Sauria, Squamata (lizards) |
| Subspecies | |
| Common Names | E: Unicolored Forest Lizard |
| Synonym | Panolopus unicolor SCHOOLS & HEDGES 2024: 217 Panolopus curtissi hylonomus — SCHOOLS & HEDGES 2021:250 (part) Panolopus curtissi hylonomus — SCHOOLS et al. 2022:42 (part) Panolopus curtissi hylonomus — LANDESTOY et al., 2022: 222 (part) |
| Distribution | Dominican Republic Type locality: 14.8 N, 7.8 km SE Cruce de Ocoa on dirt road, at Martinez, near La Palma, San José de Ocoa province, Dominican Republic (18.46, -70.45; 675 m). |
| Reproduction | |
| Types | Holotype. ANSP 38647, an adult, collected by Richard Thomas, Manuel Leal, and Herman Dominici on 10 July 1993. |
| Diagnosis | Diagnosis. Panolopus unicolor sp. nov. has (1) a dorsal pattern of absent, (2) head markings absent, (3) markings in the longitudinal paramedian area present, (4) dots arranged in bars in the lateral band present, (5) an adult SVL of 67.6 mm, (6) ventral scale rows, 93, (7) midbody scale rows, 40, (8) total lamellae on one hand, 48, (9) total strigae on ten scales, 144, (10) relative length of all digits on one hindlimb, 36.8 %, (11) relative distance between the angled subocular and mouth, 0.533 %, (12) relative eye length, 3.38 %, (13) relative forelimb length, 23.5 %, (14) relative ear width, 1.60 %, (15) relative rostral height, 2.23 %, (16) relative head length, 17.8 %, (17) relative mental width, 1.73 %, (18) relative postmental width, 2.80 %, (19) relative cloacal width, 7.61 %, (20) relative prefrontal width, 4.69 %, (21) relative largest supraocular width, 3.12 %, (22) relative longest finger length, 6.65 %, (23) relative distance between the ear and eye, 7.61 %, (24) relative head width, 70.8 %, (25) relative frontal width, 58.2 %, (26) relative nasal height, 1.15 %, (27) relative angled subocular height, 0.814 %, (28) relative distance between the eye and naris, 5.52 %, (29) relative canthal iii length, 1.79v, (30) relative angled subocular width, 2.90 %, and (31) relative nasal length, 2.00 %. The species stem time is 0.85 Ma and no data are available to estimate the species crown time (Fig. 4). Panolopus unicolor sp. nov. has a smaller relative frontal width (58.2) and a lower number of total strigae on ten scales (144) than most species of the genus. The species also has a larger relative length of digits on one hindlimb (36.8) than most species of the genus. The only known specimen of P. unicolor sp. nov. is a small adult specimen, which may contribute to a bias towards larger measurements. From Panolopus aenetergum, we distinguish P. unicolor sp. nov. by the dorsal pattern (absent versus irregular dots), the longitudinal paramedian lines (present versus absent), the total strigae on ten scales (144 versus 267), and the relative frontal width (58.2 versus 88.2). From P. aporus, we distinguish P. unicolor sp. nov. by the adult SVL (67.6 versus 77.8–100), the total strigae on ten scales (144 versus 150–235), the relative length of digits on one hindlimb (36.8 versus 27.7–33.7), the relative cloacal width (7.61 versus 7.92–8.86), the relative prefrontal width (4.69 versus 4.18–4.53), the relative longest finger length (6.65 versus 4.57–5.72), the relative head width (70.8 versus 71.4–83.2), the relative frontal width (58.2 versus 61.7–75.1), the relative distance between the eye and naris (5.52 versus 4.69–5.44), the relative width of canthal iii (1.79 versus 1.85–1.96), the relative angled subocular width (2.90 versus 2.32–2.73), and the relative nasal width (2.00 versus 1.56–1.78). From P. chalcorhabdus, we distinguish P. unicolor sp. nov. by the adult SVL (67.6 versus 71.9–95.4), the total strigae on ten scales (144 versus 184–233), the relative length of digits on one hindlimb (36.8 versus 31.3–36.0), the relative cloacal width (7.61 versus 7.74–9.08), the relative largest supraocular width (3.12 versus 2.52–2.86), the relative frontal width (58.2 versus 62.5–80.8), the relative width of canthal iii (1.79 versus 1.98–2.05),and the relative angled subocular width (2.90 versus 2.36–2.71). From P. costatus, we distinguish P. unicolor sp. nov. by the adult SVL (67.6 versus 83.6–107), the total lamellae on one hand (48 versus 49–58), the total strigae on ten scales (144 versus 158–217), the relative distance between angled subocular and mouth (0.533 versus 0.582–0.916), the relative prefrontal width (4.69 versus 3.97–4.67), the relative largest supraocular width (3.12 versus 1.93–3.01), the relative distance between the eye and naris (5.52 versus 5.08–5.50), the relative width of canthal iii (1.79 versus 1.82–1.90), the relative angled subocular width (2.90 versus 2.36–2.81), and the relative nasal width (2.00 versus 1.58–1.74). From P. curtissi, we distinguish P. unicolor sp. nov. by the dots arranged in bars in the lateral areas (present versus absent), the midbody scale rows (40 versus 32–38), the total lamellae on one hand (48 versus 32–39), the total strigae on ten scales (144 versus 165–260), the relative length of digits on one hindlimb (36.8 versus 20.8–28.1), the relative forelimb length (23.5 versus 15.1–20.5), the relative postmental width (2.80 versus 2.07–2.72), the relative prefrontal width (4.69 versus 3.96–4.68), the relative largest supraocular width (3.12 versus 1.88–2.98), the relative longest finger length (6.65 versus 3.59–4.54), the relative frontal width (58.2 versus 65.4–83.1), the relative distance between the eye and naris (5.52 versus 4.02–5.03), the relative angled subocular width (2.90 versus 2.26–2.76), and the relative nasal width (2.00 versus 1.44–1.82). From P. diastatus, we distinguish P. unicolor sp. nov. by the longitudinal paramedian lines (present versus absent), the midbody scale rows (40 versus 33–39), the total lamellae on one hand (48 versus 35–41), the total strigae on ten scales (144 versus 169–234), the relative length of digits on one hindlimb (36.8 versus 21.5–27.4), the relative eye length (3.38 versus 2.71–3.32), the relative forelimb length (23.5 versus 16.2–20.1), the relative ear width (1.60 versus 0.667–1.43), the relative prefrontal width (4.69 versus 3.74–4.61), the relative largest supraocular width (3.12 versus 1.88–2.57), the relative longest finger length (6.65 versus 3.48–4.87), the relative distance between the eye and naris (5.52 versus 4.06–4.94), the relative angled subocular width (2.90 versus 1.93–2.86), and the relative nasal width (2.00 versus 1.41–1.77). From P. emys, we distinguish P. unicolor sp. nov. by the adult SVL (67.6 versus 99.0–113), the total strigae on ten scales (144 versus 238–311), the relative length of digits on one hindlimb (36.8 versus 28.9–35.2), the relative forelimb length (23.5 versus 18.5–23.4), the relative cloacal width (7.61 versus 8.24–8.96), the relative prefrontal width (4.69 versus 3.99–4.36), the relative largest supraocular width (3.12 versus 2.01–2.89), the relative longest finger length (6.65 versus 5.15–5.83), the relative head width (70.8 versus 71.1– 78.7), the relative frontal width (58.2 versus 67.7–74.5), the relative nasal height (1.15 versus 0.963–1.10), the relative distance between the eye and naris (5.52 versus 4.37–5.19). From P. hylonomus, we distinguish P. unicolor sp. nov. by the dots arranged in bars in the lateral areas (present versus absent), the midbody scale rows (40 versus 33–39), the total lamellae on one hand (48 versus 34–47), the total strigae on ten scales (144 versus 169–222), the relative length of digits on one hindlimb (36.8 versus 22.8–28.2), the relative forelimb length (23.5 versus 17.1– 20.7), the relative cloacal width (7.61 versus 7.98–8.57), the relative largest supraocular width (3.12 versus 2.65– 2.90), the relative longest finger length (6.65 versus 4.47–5.27), the relative head width (70.8 versus 73.8–76.4), the relative frontal width (58.2 versus 64.0–74.5), the relative distance between the eye and naris (5.52 versus 4.03– 4.98), the relative width of canthal iii (1.79 versus 1.95–2.03), and the relative angled subocular width (2.90 versus 1.61–2.75). From P. lanceolatus sp. nov., we distinguish P. unicolor sp. nov. by the adult SVL (67.6 versus 78.5– 104), the total strigae on ten scales (144 versus 186–234), the relative length of digits on one hindlimb (36.8 versus 28.4–35.9), the relative distance between angled subocular and mouth (0.533 versus 0.567–0.704), the relative ear width (1.60 versus 0.770–1.35), the relative postmental width (2.80 versus 2.36–2.66), the relative cloacal width (7.61 versus 8.01–8.76), the relative prefrontal width (4.69 versus 3.97–4.55), the relative largest supraocular width (3.12 versus 2.20–2.71), the relative longest finger length (6.65 versus 4.76–6.36), the relative frontal width (58.2 versus 63.1–72.1), the relative nasal height (1.15 versus 0.904–1.06), the relative distance between the eye and naris (5.52 versus 4.58–5.05), and the relative nasal width (2.00 versus 1.48–1.95). From P. lapierrae sp. nov., we distinguish P. unicolor sp. nov. by the adult SVL (67.6 versus 72.6–88.3), the midbody scale rows (40 versus 33– 38), the total lamellae on one hand (48 versus 38–47), the total strigae on ten scales (144 versus 228–231), the relative length of digits on one hindlimb (36.8 versus 24.3–30.9), the relative distance between angled subocular and mouth (0.533 versus 0.620–0.725), the relative forelimb length (23.5 versus 18.5–20.6), the relative ear width (1.60 versus 0.929–1.58), the relative rostral height (2.23 versus 1.86–2.06), the relative mental width (1.73 versus 1.92– 1.94), the relative cloacal width (7.61 versus 8.55–8.81), the relative prefrontal width (4.69 versus 4.73–4.75), the relative largest supraocular width (3.12 versus 1.91–2.77), the relative longest finger length (6.65 versus 4.49–4.55), the relative distance between the ear and eye (7.61 versus 7.78–8.43), the relative head width (70.8 versus 77.7– 78.1), the relative frontal width (58.2 versus 77.6–79.0), the relative nasal height (1.15 versus 1.06–1.09), the relative angled subocular height (0.814 versus 0.838–0.978), the relative distance between the eye and naris (5.52 versus 5.21), the relative angled subocular width (2.90 versus 2.71), and the relative nasal width (2.00 versus 1.81). From P. leionotus, we distinguish P. unicolor sp. nov. by the adult SVL (67.6 versus 86.3–105), the total strigae on ten scales (144 versus 191–266), the relative length of digits on one hindlimb (36.8 versus 25.4–34.1), the relative cloacal width (7.61 versus 8.03–8.69), the relative largest supraocular width (3.12 versus 1.94–2.50), the relative longest finger length (6.65 versus 4.58–6.10), and the relative frontal width (58.2 versus 68.7–81.2). From P. marcanoi, we distinguish P. unicolor sp. nov. by the dorsal pattern (absent versus irregular dots/dots in chevrons), the head markings (absent versus present), the total lamellae on one hand (48 versus 36–44), the relative length of digits on one hindlimb (36.8 versus 26.3–31.9), the relative mental width (1.73 versus 1.75–2.33), the relative frontal width (58.2 versus 59.0–73.0), the relative angled subocular height (0.814 versus 0.505–0.793), and the relative nasal width (2.00 versus 1.64–1.96). From P. melanchrous, we distinguish P. unicolor sp. nov. by the adult SVL (67.6 versus 93.2–124), the total strigae on ten scales (144 versus 168–413), the relative frontal width (58.2 versus 61.3–71.4), the relative nasal height (1.15 versus 0.897–0.952), and the relative angled subocular width (2.90 versus 2.28–2.82). From P. neiba, we distinguish P. unicolor sp. nov. by the dorsal pattern (absent versus irregular flecks/dots in chevrons), the adult SVL (67.6 versus 77.9–102), the total strigae on ten scales (144 versus 179–239), the relative length of digits on one hindlimb (36.8 versus 29.5–36.6), the relative distance between angled subocular and mouth (0.533 versus 0.670–0.747), the relative largest supraocular width (3.12 versus 2.06–3.04), the relative frontal width (58.2 versus 63.3–74.0), the relative nasal height (1.15 versus 0.963–1.08), the relative distance between the eye and naris (5.52 versus 4.51–5.01), the relative angled subocular width (2.90 versus 2.34–2.83), and the relative nasal width (2.00 versus 1.67–1.92). From P. nesobous, we distinguish P. unicolor sp. nov. by the dorsal pattern (absent versus irregular dots/dots in series) and the total lamellae on one hand (48 versus 50–59). From P. oreistes, we distinguish P. unicolor sp. nov. by the dorsal pattern (absent versus irregular dots/dots in series/dots in chevrons), the adult SVL (67.6 versus 77.3–103), the total strigae on ten scales (144 versus 155–267), the relative frontal width (58.2 versus 61.6–76.9), the relative nasal height (1.15 versus 0.878–1.06), and the relative nasal width (2.00 versus 1.37–1.65). From P. psychonothes, we distinguish P. unicolor sp. nov. by the dorsal pattern (absent versus irregular dots/dots in series/dots in chevrons), the adult SVL (67.6 versus 70.9–97.2), the total lamellae on one hand (48 versus 37–44), the total strigae on ten scales (144 versus 172–244), the relative length of digits on one hindlimb (36.8 versus 26.5–33.1), the relative largest supraocular width (3.12 versus 1.92–2.68), the relative longest finger length (6.65 versus 4.89–5.81), the relative frontal width (58.2 versus 66.5–81.0), the relative angled subocular width (2.90 versus 2.01–2.44), and the relative nasal width (2.00 versus 1.68–1.94). From P. saonae, we distinguish P. unicolor sp. nov. by the longitudinal paramedian lines (present versus absent), the adult SVL (67.6 versus 90.9– 98.3), the midbody scale rows (40 versus 35–39), the total strigae on ten scales (144 versus 212–284), the relative eye length (3.38 versus 3.06–3.20), the relative ear width (1.60 versus 0.880–1.35), and the relative head length (17.8 versus 15.4–17.5). From P. semitaeniatus sp. nov., we distinguish P. unicolor sp. nov. by the SVL (67.6 versus 77.4–84.1), the total lamellae on one hand (48 versus 34–46), the total strigae on ten scales (144 versus 174–204), the relative length of digits on one hindlimb (36.8 versus 30.4–34.6), the relative distance between angled subocular and mouth (0.533 versus 0.666–0.808), the relative ear width (1.6 versus 1.90–2.30), the relative cloacal width (7.61 versus 8.08–8.23), the relative longest finger length (6.65 versus 5.17–6.05), the relative head width (70.8 versus 58.8–63.8), and the relative frontal width (58.2 versus 63.6–76.5). (Schools & Hedges 2024) |
| Comment | Distribution: for a map see Schools & Hedges 2024: 134 (Fig. 49) |
| Etymology | Named after Latin unicolor, a nominative singular masculine adjective, referring to the absence of a pattern on the dorsum of the holotype and only known specimen of this species. |
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