SPHENOPHRYNE - American Museum of Natural History

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38 BULLETIN AMERICAN MUSEUM OF NATURAL HISTORY NO. 253 River near Yilu, southwest slope of the Schrader Mountains, 600 m, approximate coordinates 1449E, 57S (UPNG 8396); Kervat, Adelbert Mtns., 800 m (UPNG 8135). REMARKS: The specimen from the Adelbert Mtns., collected by James Menzies on Nov. 14, 1988, resembles topotypic hooglandi closely in color and pattern. Its IN/SVL ratio is smaller than in other hooglandi, but other ratios are within ranges. The identity in color and pattern with other hooglandi leads me to associate it with that species. Austrochaperina kosarek, new species HOLOTYPE: MZB 3561, also tagged UPNG 9532 (field no. Blum 1979-38), collected in July 1979 by J. Paul Blum at Kosarek, elevation 1400 m, Jayawijaya District, Irian Jaya, Indonesia. PARATYPES: The holotype is the only known specimen. ETYMOLOGY: The name of the type locality serves as a noun in apposition. DIAGNOSIS: A small Austrochaperina (only specimen 21 mm SVL) with short legs (TL/ SVL 0.409) and with finger tips (except that of the first) flattened and disclike but with weak terminal grooves and only the disc of the third finger broader than the penultimate phalanx. A. brevipes of the far distant Owen Stanley Mountains resembles kosarek in size and most proportions but has better developed (though not broader) finger discs and a narrower head (kosarek HW/SVL, 0.370; minimum in brevipes 0.379). DESCRIPTION OF HOLOTYPE: Adult female (ova 1.7 mm in diameter) with the following measurements and proportions: SVL 21.0, HW 7.8, TL 8.6, EY 2.55, EN 1.5, IN 2.35, HD 4.0, FT 8.5, disc of third finger 0.45 (penultimate phalanx 0.4), disc of fourth toe 0.65 (0.35); HW/SVL 0.370, TL/SVL 0.409, EY/SVL 0.121, EN/SVL 0.071, IN/SVL 0.112, EN/IN 0.638, HD/SVL 0.190, FT/ SVL 0.405, disc of third finger/SVL 0.021, disc of fourth toe/SVL 0.031. Head almost as wide as body; snout tapering to a sharply rounded tip, rounded and slightly projecting in profile; nostrils visible from above, rather widely spaced, equidistant from snout tip and eye; canthus rostralis rounded, loreal region sloping, slightly con- cave. Eyes large, corneal margin visible from beneath, eyelid about 75% of interorbital space. Tympanic annulus obscure. Relative lengths of fingers 3 4 2 1, first about half length of second; tips (except for first finger) flattened, somewhat disclike with faint suggestions of terminal grooves, but only that of third finger slightly expanded; subarticular and metacarpal elevations low, rounded (fig. 53F). Toes unwebbed, relative lengths 4 3 5 2 1, first much less than half length of second, all but first with grooved discs broader than penultimate phalanges; subarticular elevations rounded, inconspicuous, inner metatarsal elevation rounded, elongate (fig. 53F). A weak postorbital-supratympanic skin fold, skin otherwise smooth above and below. The top of the snout is gray, the tip almost white. The loreal region and area below and behind the eye are dark brown, with pale spots on the upper lip. The dorsal surface of the body is light brown with obscure, small, darker markings and a dark mark above the cloacal opening. The dark brown postorbital color continues along the flank to the groin and on the anterior side of the thigh, but is much interrupted by irregular light spotting on the flank and thigh. The front legs are heavily spotted above with brown. The hind legs are pale brown above with fine melanic stippling and heavily mottled beneath, and the thighs are mottled on their posterior surfaces. The chin and chest are dark brown with small light spots, and the abdomen abruptly paler with irregular brown spotting. VARIATION IN TYPE SERIES: There is only the holotype specimen, so nothing can be said of variation. ILLUSTRATIONS: Hand and foot, fig. 53F. CALL: This has not been described. COMPARISONS WITH OTHER SPECIES: Austrochaperina blumi is sympatric with kosarek and of similar size but may immediately be distinguished from kosarek by its well-developed finger and toe discs. HABITAT AND HABITS: Nothing is on record. DISTRIBUTION: The only known locality, Kosarek, is at 1400 m elevation on the north slope of the central dividing range of Irian Jaya, west of Nipsan and northeast of An-
2000 ZWEIFEL: PARTITION OF SPHENOPHRYNE 39 guruk, about 110 km west of the border with Papua New Guinea (fig. 10). Austrochaperina macrorhyncha (van Kampen), new combination Figures 22, 31D Chaperina macrorhyncha van Kampen, 1906: 168 (type locality, ‘‘Manikion-Gebiet,’’ Irian Jaya, Indonesia; holotype, RMNH 4630, collected February 14–21, 1903, by the Netherlands New Guinea Expedition). Chaperina punctata van Kampen, 1913: 463 (type localities, ‘‘Went-Gebirge, 800–1050 m.’’ and ‘‘Hellwig-Gebirge, 2500 m.,’’ Irian Jaya, Indonesia; 12 syntypes [see below], collected by H. A. Lorentz in October and November 1909). Chaperina basipalmata: Boulenger, 1914: 251 (specimen from Mimika River). Sphenophryne macrorhyncha: van Kampen, 1919: 54 (first use of combination). Van Kampen, 1923: 107 (part, basipalmata considered a synonym). Parker, 1934: 155 (part). Loveridge, 1948: 421 (paratype of punctata). TYPE LOCALITIES: The ‘‘Manikion region’’ is not shown on maps available to me, but during the period specified the Expedition operated at the southeastern corner of the Vogelkop Peninsula (Wichmann, 1917: 103– 116, map 2). The Went and Hellwig mountains are south of Mt. Wilhelmena (Peak Tricora) in the southern drainage of the central mountain chain of Irian Jaya. Labels associated with several of the Went Mountains specimens specify ‘‘Henvelbivak,’’ which Nouhuys (1913: pl. 5) placed on the Lorentz River, 3.5 km W, 9 km N Alkmaar. TYPE MATERIAL: Eight of the 12 syntypes of punctata remain in Amsterdam (Daan and Hillenius, 1966): ZMA 5747–5750 (Went Mtns., 800 m, Oct. 11, 1909 and 1050 m, Oct. 12, 1909); ZMA 5751–5753 (Henvelbivak, 800 m, Nov. 9, 1909); ZMA 5754, Hellwig Mtns., 2500 m, Oct. 1909). The remaining specimens are distributed as follows: AMS R30834 (formerly Macleay Museum 56; Went Mtns., 1050 m); BMNH 1947.2.14.91 (Went Mtns., 800 m, Oct. 11, 1909) 6 ; FMNH 100117 (formerly in E. H. Taylor collection; Henvelbivak, 800 m, Nov. 6 Parker (1934) mistakenly listed this specimen, then bearing the number BMNH 1928.2.10.3, as a cotype of Chaperina basipalmata. Fig. 22. Austrochaperina macrorhyncha, BPBM 13860, SVL 31.6 mm. 6, 1909); MCZ A10773 (Went Mtns., Oct. 11–12, 1909). DIAGNOSIS: Moderate size, females mature at about 32 mm SVL, males slightly smaller, dorsal pattern obscure or of dark flecks or vermiform markings on a slightly paler background; finger disc moderately large (FD/ SVL 0.035), legs long and eyes large (TL/ SVL 0.46, EY/SVL 0.116). MORPHOLOGY: Van Kampen’s (1906) description of the holotype (there are no paratypes) is quite thorough, omitting only the sex. I did not dissect the specimen when I examined it (in 1964), so the sex remains undetermined. The specimen was rather dried and the skin of the head had been split down the middle and loosened; hence, some of my measurements may be less exact than
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