A New Species of Helicops (Serpentes: Dipsadidae: Hydropsini) from Southeastern Brazil Author Costa, Henrique C. Author Santana, Diego J. Author Leal, Fernando Author Koroiva, Ricardo Author Garcia, Paulo C. A. text Herpetologica 2016 2016-06-30 72 2 157 166 http://dx.doi.org/10.1655/herpetologica-d-15-00059 journal article 231400 10.1655/HERPETOLOGICA-D-15-00059 c3c8c82e-cdab-46c5-9f80-f1ccd8fa0626 1938-5099 7712201

TABLE 3.—Summary of morphological characters of Helicops species. AD = anterior dorsal scale rows, MD = midbody dorsal scale rows, PD = posterior dorsal scale rows, DK = dorsal keels on posterior third of body (medium = M, strong = S, or weak = W), V = ventral plates, SC = subcaudal plates, SCK = subcaudal keels (present = Yes or absent = No), SL = supralabials, SL + E = supralabials contacting the eye, IL = infralabials, IL + G1 = infralabials contacting the first pair of genials, IG = intergenials (present = Yes or absent = No), NA = nasal (entire = E or semidivided = S), Pe = preoculars, Po = postoculars, AT = anterior temporals, PT = posterior temporals, MXT = maxillary teeth.

Species	AD	MD	PD	DK	V (male/female)	SC (male/female)	SCK	SL	SL + E	IL	IL + G1	IG	NA	Pe	Po	AT	PT	MXT
References: Amaral (1922, 1938), Boulenger (1893), Frota (2005), Griffin (1916), Kawashita-Ribeiro et al. (2013), Nunes (2006), Rossman and Abe (1979), Rossman and Dixon (1975), Rossman (1975, 1976, 2002ab, 2010), Shreve (1934), Yuki and Lema (2005), and the present study.
H. angulatus	19–21	19–20	17–19	S	105–123/109–123	74–96/66–84	Yes	7–9	iv; iv–v; v	9–11	i–iv; i–v; i–vi	No	S	1–2	2	2–3	3–4	15 + 2
H. apiaka	21–24	21–22	17–19	S	118–127/124–132	79–103/80–84	Yes	7–9	iii–iv	9–12	i–iv; i–v; i–vi	No	S	1	2	2–3	3	15–16 + 2
H. carinicaudus	19	19	17	W–S	130–141/135–148	48–69/48–73	No	7–8	iii–iv; iv; iv–v	9–10	i–v	No	S	1	2	1–2	2–3	16–19 + 2
H. danieli	19–21	19–20	16–19	S	125–135/130–141	76–86/61–70	No	8–9	iv	10–11	i–v	No	S	1	2	1–2	2	16–20
H. gomesi	19	19	19	S	125–132/128–132	71–86/67–73	Yes	8–9	iv; v	10	i–iv; i–v	No	S	1	2	1	2–3	18
H. hagmanni	23–27	21–29	19–23	S	117–127/130–134	55–67/51–53	No	8	iv	10–12	i–v	Yes	S	1–2	1–2	1–2	3	15–17 + 2
H. infrataeniatus	17–19	17–19	15–19	S	115–138/117–138	52–88/50–83	No	7–9	iii–iv; iv	10–12	i–v; i–vi	No	S	1	2	1–2	2	17–20 + 2
H. leopardinus	15–22	19–22	17–19	M–S	108–126/108–130	64–89/53–76	No	8–10	iii–iv; iv; iii–v	8–11	i–iv; i–v	No	S	1–2	2	2	2–4	18 + 2
H. modestus	19	19	17–19	W–M	112–125/116–122	54–70/53–64	No	8	iii–iv; iv	9–11	i–iv; i–v; i–vi	No	S	1–2	2–3	2	2–4	19 + 2
H. pastazae	23	23–25	19	S	121–134/130–145	93–117/72–97	No	8–10	iv	9–13	i–iv; i–v	Yes	S	1	2	2	2–3	14–17 + 2
H. petersi	21	21–23	16	S	135–142/137–150	85–91/67–73	No	8	iv	9–12	i–v	Yes	S	1	2	1	2–3	16–17 + 2
H. polŋlepis	23–25	23–25	19	S	112–131/121–133	70–102/71–81	No	8–9	iii–iv; iv	11–13	i–iv; i–v; i–vi	No	S	1	2	1–2	2–4	16 + 2
H. scalaris	21–25	19–21	16–19	S	110–119/113–125	83–95/67–81	Yes	8–9	iv; iv–v	10–14	i–v	Yes	S	1	2	1–3	3	15–17 + 2
H. tapajonicus	19	19	17	W	118/121–123	79/67–76	No	8	iv	9–11	i–iv; i–v	No	S (?)	1	2	1	2	18 + 2
H. triƲittatus	21–25	20–23	16–19	W	114–128/115–129	67–80/56–66	No	8–10	iv; v	11–14	i–v; i–vi	Yes	S	2	2	1	2	19–22 + 2
H. ŋacu	25–29	25–28	18–20	?	124/129–136	?/85–96	?	8–9	iv–v	11–12	i–v; i–vi	Yes	E	1	2	1	2–3	14–15 + 2
H. nentur sp. nov.	17	17	15	W	115/111–117	56/41–52	No	8	iii–iv	9–10	i–v	No	E	1	2	2	2–3	18–21 + 2