Part 9

Syrrhophus pipilans Taylor, 1940c:95-97, pl. 1 [Holotype.--FMNH 100072 (formerly EHT-HMS 6843), 14.6 km. S Mazatlan, Guerrero, Mexico; collected on July 22, 1936, by Edward H. Taylor].

Diagnosis.--Medium sized frogs, males 22.6-28.5 mm. snout-vent, females 21.1-29.4 mm. snout-vent length; vocal slits present in males; finger tips slightly expanded, truncate in outline; inner metatarsal tubercle less than twice the size of outer; skin of dorsum smooth to shagreened, that of venter smooth; tympanum 36.5-54.0 per cent diameter of eye; dorsum dark brown with large or small light brown, orange-brown, or yellowish spots or blotches; limbs banded; interorbital bar absent.

Remarks.--Two subspecies were recognized by Duellman (1958). Previously both had been treated as species. The two populations were distinguished on the basis of color pattern and the size of the tympanum. Measurements of 17 males of S. p. nebulosus from central Chiapas and 18 males of S. p. pipilans from southcentral Oaxaca and Guerrero, Mexico, demonstrates that the supposed difference in tympanum size is not significant (Fig. 15). There is, however, a tendency for the western population of S. pipilans to have larger tympani. Based on the present examination of 112 specimens of this species the two populations are held to be sufficiently distinct to warrant taxonomic recognition as subspecies (Fig. 16).

The parotoid glands attributed to this species by Taylor (1940c:95) are merely the superficial expression of the m. depressor mandibulae and scapula. No true glands are present in the parotoid region.

=Syrrhophus pipilans nebulosus= Taylor

Syrrhophus nebulosus Taylor, 1943:353-55, pl. 27, figs. 3-5 [Holotype.--FMNH 100095 (formerly EHT-HMS 3774), near Tonola, Chiapas, Mexico; collected on August 27, 1935, by Hobart M. Smith and Edward H. Taylor]. Smith and Taylor, 1948:49, 51.

Syrrhophus pipilans nebulosus: Duellman, 1958:2-4, 9, 12, 14. Stuart, 1963:32-33. Gorham, 1966:166-67.

Diagnosis.--Diameter of tympanum 36.6-47.8 per cent that of eye; dorsum dark brown with numerous small light brown to yellowish spots.

Remarks.--The distribution of this subspecies is adequately described by Duellman (1958). Fouquette (1960) described the vocalization of this frog.

Etymology.--Latin, nebula, in reference to the clouded dorsal pattern.

Distribution.--Low to moderate elevations along the Pacific versant of Chiapas and in the Grijalva valley of Chiapas and Guatemala (Fig. 17).

Specimens examined.--(54) GUATEMALA, Huehuetenango: Jacaltenango, UMMZ 117036; 35 km. SE La Mesilla, TNHC 29652. MEXICO, Chiapas: 11.2 km. N Arriaga, 300 m., UMMZ 125891; 11.8 km. N Arriaga, UMMZ 117279; 12.8 km. N Arriaga, UMMZ 117280; 17.5 km. S Arriaga, UIMNH 57108-109; 1.5 km. S Bochil, 1250 m., KU 58898-908; Cerro Hueco, 7 km. S Tuxtla Gutierrez, UMMZ 123007; 3.2 km. S Ixtapa, UMMZ 124000; Linda Vista, ca. 2 km. NW Pueblo Nuevo Solistahuacan, KU 58897; Hda. Monserrate, 40 km. NW Arriaga, UMMZ 102258; near San Ricardo, FMNH 100720; Tapachula, FMNH 75792, 103242, 100695-96, UIMNH 13292; 56 km. E Tapanatepec, Oaxaca, TNHC 26942, Tonola, FMNH 100095 (holotype), 100686-92, UIMNH 13293-95; Tuxtla Gutierrez, FMNH 100693-94, UIMNH 13297; 19 km. N Tuxtla Gutierrez, TNHC 25229-30; 15.5 km. NE Tuxtla Gutierrez, UMMZ 119892 (3); 19 km. NE Tuxtla Gutierrez, UMMZ 119891 (3); 8 km. NNW Tuxtla Gutierrez, KU 37809; Union de Juarez, FMNH 105294.

=Syrrhophus pipilans pipilans= Taylor

?Syrrhopus verruculatus: Gadow, 1905:194.

Syrrhophus pipilans Taylor, 1940c:95-97, pl. 1 [Holotype.--FMNH 100072 (formerly EHT-HMS 6843), from 14.6 km. S Mazatlan, Guerrero, Mexico; collected on July 22, 1936, by Edward H. Taylor]. Taylor and Smith, 1945:581-82. Smith and Taylor, 1948:49, 50-51.

Syrrhophus pipilans pipilans: Duellman, 1958:1-4, 8-9, 13-14, pl. 2, fig. 1. Gorham, 1966:166.

Diagnosis.--Diameter of tympanum 40.6-54.0 per cent that of eye; dorsum dark brown with large light spots or blotches.

Remarks.--Duellman's (1958) synopsis of this subspecies is adequate; the distribution has not been extended, but several records are now available which fill in gaps.

Gadow's (1905) record of S. verruculatus from "Buena Vista, S. Guerrero" is most likely applicable to this species. Gadow simply included the name in a list of the species he had collected during his trip in Mexico (1902-04); no further comment was made on this species although references to Syrrhopus (sic) appear in several places in the paper and would appear to apply to the species he had.

Etymology.--Latin, pipilo, chirping, peeping, in reference to the call of the male.

Distribution.--Sea level to about 1800 meters along the Pacific versant of western Mexico from central Guerrero to the Isthmus of Tehuantepec (Fig. 17).

Specimens examined.--(62). MEXICO, Guerrero: Acapulco, UMMZ 110125; 6.4 km. N Acapulco, FMNH 100389, 100525; Agua del Obispo, 980-1000 m., FMNH 75791, 100518-21, 100526, KU 86884-86, UIMNH 13315, UMMZ 119152, 125890 (4); 13.3 km. NW Coyuca, UIMNH 38367, 71982-83; 14.5 km. S Mazatlan, FMNH 100072 (holotype), 100408, 100511-17, UIMNH 13302-309; Tierra Colorado, 300 m., KU 67961, UIMNH 13313-14; near El Treinte, FMNH 126639; Xaltinanguis, FMNH 100522-24, 126640. Oaxaca: Cacahuatepec, UIMNH 52853; 8 km. NW Rio Canoa, 53 km. ESE Cuajinicuilapa, UIMNH 52852; 6.4 km. N El Candelaria, UIMNH 9501; 11.2 km. S El Candelaria, UIMNH 9502; 17 km. NE Juchatengo, 1600 m., KU 86887; 31.5 km. N Pochutla, UMMZ 123999 (2); 32.9 km. N Pochutla, 850 m., UMMZ 123996; 37.1 km. N Pochutla, UMMZ 123998 (2); 41.4 km. N Pochutla, UMMZ 123997 (2); Cerro Quiengola, FMNH 105653; 3.8 km. N Santiago Chivela, UMMZ 115449; 14.5 km. W Tehuantepec, UMMZ 115448 (2).

=Syrrhophus interorbitalis= Langebartel and Shannon

Syrrhophus interorbitalis Langebartel and Shannon, 1956: 161-65, figs. 1-2 [Holotype.--UIMNH 67061 (formerly FAS 9378), 36 mi. N Mazatlan, Sinaloa, Mexico, collected on November 17, 1955, by E. C. Bay, J. C. Schaffner, and D. A. Langebartel]. Duellman, 1958:1-4, 10, 12, 14. Gorham, 1966:164-65.

Syrrhophis interorbitalis: Campbell and Simmons, 1962:194, fig. 1.

Diagnosis.--Medium sized frogs, only known male 25.6 mm. snout-vent, females 20.0-26.7 mm. snout-vent length (small sample); vocal slits in males; finger tips expanded; first finger shorter than second; outer metatarsal tubercle one-third size of inner; skin of dorsum shagreened, that of venter smooth; diameter of tympanum 37.7-42.4 per cent that of eye in both sexes; pale yellow-brown ground color mottled with brown; limb bands broad, much wider than narrow light interspaces; interorbital bar very long, edged with dark brown to black (Fig. 18).

Remarks.--Duellman's (1958) measurements and proportions of S. interorbitalis were based exclusively on the type series, which is composed of only females; therefore his interorbitalis data are not comparable with the data for the other species in his table. Campbell and Simmons (1962) collected the only known male. The type series was collected beneath rocks in a stream bed; the collectors heard calling frogs in the bushes but were unable to obtain specimens (Langebartel and Shannon, 1956). Campbell and Simmons (1962) reported that their specimen had a poorly developed interorbital bar in life; in preservative the bar compares favorably with the bar in the female (Fig. 18).

Etymology.--Latin, in reference to the pale interocular band.