Dendrophryniscus jureia, Cruz & Caramaschi & Fusinatto & Brasileiro, 2019
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publication ID |
https://doi.org/ 10.11646/zootaxa.4648.1.2 |
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publication LSID |
lsid:zoobank.org:pub:ECE2A8C4-9CAA-4580-B589-D693C2F3EEB6 |
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persistent identifier |
https://treatment.plazi.org/id/03FF87BC-FFBA-EA0F-FF34-FA36FD2AFEF7 |
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treatment provided by |
Plazi |
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scientific name |
Dendrophryniscus jureia |
| status |
sp. nov. |
Dendrophryniscus jureia sp. nov.
( Figs. 15–16 View FIGURE 15 View FIGURE 16 )
Holotype. MNRJ 91510 View Materials , adult male, collected at Estação Ecológica da Juréia-Itatins—Núcleo Rio Verde (24º22’S, 47º04’W, Datum WGS 84; 32 m altitude), Municipality of Iguape, State of São Paulo, Brazil, by J.P. Pombal Jr. and M. Gordo, on 03 September 1988. GoogleMaps
Paratypes. All specimens collected at the type locality: MNRJ 91511–91512 View Materials , adult males, collected with holotype GoogleMaps ; MNRJ 91513 View Materials , juvenile, collected by J.P. Pombal Jr., E.C.P. Pombal, and P.C. Bauduim, on 17 July 1990 ; MNRJ 40007 View Materials , collected by M. Gordo and Wolfgang, in 16–20 November 1989 ; MNRJ 92455 View Materials collected by C.A. Brasileiro and M.T.C. Thom, on 01 November 2006 ; CFBH 373 View Materials , collected by M. Gordo, on 01 October 1986 ; ZUEC 9755 View Materials , collected by J.P. Pombal Jr., M. Gordo & E.P. Pombal, on 07 September 1989 .
Diagnosis. The species is characterized by: (1) medium size for the genus ( SVL 16.0– 18.7 mm in males, 17.6– 19.6 mm in females); (2) body slender; (3) snout mucronate in dorsal view; (4) canthus rostralis slightly curved; (5) elliptical set of pronounced white granules posterior to the corner of mouth; (6) surfaces of upper eyelid with few granules sparse and external margin poorly marked; (7) tip of the third and fourth fingers poor or not expanded laterally; (8) skinfold poor developed on the articulation of the first phalange of the fingers II, III, and IV; (9) male with poor developed nuptial pad with minuscule light brown horny asperities on finger I; (10) fingers not fringed and webbed about one third.
Comparisons with other species. Dendrophryniscus jureia sp. nov. is distinguished from D. proboscideus by the smaller size ( SVL 16.0– 18.7 mm in males of D. jureia sp. nov.; SVL 39.2–46.4 mm in males of D. proboscideus ); D. jureia sp. nov. is distinguished from D. krausae and D. stawiarskyi by the body with uniform shape (enlarged posteriorly in those species); D. jureia sp. nov. is distinguished from D. berthalutzae , D. carvalhoi , D. krausae , D. lauroi , D. oreites , D. proboscideus , D. skuki , and D. stawiarskyi by the snout mucronate in dorsal view (snout rounded in D. berthalutzae , D. carvalhoi , D. lauroi , and D. stawiarskyi ; snout truncate in dorsal view in D. krausae , D. oreites , and D. proboscideus ; snout long, narrow, spatulate, with parallel lateral borders and rounded tip in D. skuki ); by the canthus rostralis slightly curved, D. jureia sp. nov. is distinguished from D. davori sp. nov., D. carvalhoi , D. krausae , D. lauroi , and D. stawiarskyi (canthus rostralis straight); D. jureia sp. nov. presents an elliptical set of pronounced white granules posterior to the corner of mouth (elliptical set of unpigmented shallow granules posterior to the corner of mouth in D. lauroi ; longitudinal set in D. berthalutzae , D. krausae , D. leucomystax , and D. oreites ; two pronounced granules in D. imitator ; absent in D. carvalhoi , D. haddadi , D. organensis , D. proboscideus , D. skuki , and D. stawiarskyi ); D. jureia sp. nov. presents the surfaces of upper eyelid with few granules sparse and external margin conspicuous (surfaces of upper eyelid with numerous granules and with the external margin slightly prominent in D. lauroi ; surfaces of upper eyelid with numerous granules densely distributed and with a conspicuous margin in D. brevipollicatus ; D. jureia sp. nov. is distinguished from D. brevipollicatus and D. lauroi by the tip of the third and fourth fingers poorly or not expanded (laterally expanded in those species); D. jureia sp. nov. is distinguished from D. brevipollicatus by the presence of a skinfold poorly developed on the articulation of the first and second phalanges of the fingers II, III, and IV (well developed in this species); D. jureia sp. nov. is distinguished from D. davori sp. nov., D. carvalhoi , D. izecksohni , D. leucomystax , and D. stawiarskyi by the presence of moderate nuptial pad in male (absent in D. leucomystax , very developed in D. davori sp. nov., D. carvalhoi , D. izecksohni , and D. stawiarskyi ); D. jureia sp. nov. is distinguished from D. berthalutzae , D. brevipollicatus , D. carvalhoi , D. haddadi , D. imitator , D. krausae , D. lauroi , D. oreites , D. skuki , and D. stawiarskyi . by fingers fringed and webbed about one third (slightly fringed and webbed only at base in D. brevipollicatus ; fingers not fringed and webbed only at base in D. krausae ; and fingers not fringed nor webbed in D. berthalutzae , D. carvalhoi , D. haddadi , D. imitator , D. lauroi , D. oreites , D. skuki , and D. stawiarskyi .
Description of the holotype. Body slender, elongated ( Fig. 15 View FIGURE 15 ); head triangular, longer than large, head length 36.8% of SVL; snout mucronate in dorsal view, acute in lateral view ( Fig. 16 View FIGURE 16 ); snout 43.7% of head length; presence of a small tubercle under the tip of snout, nostrils not protuberant, small and elliptical, located laterally near the tip of snout, below the canthus rostralis; internarial distance 50.0% of eye to snout distance; eye diameter 64.3% of eye to snout distance and 75.0% of interorbital distance; eye protuberant; canthus rostralis slightly curved; loreal region vertical; choanae small, circular, and very far from witch one; tongue long, narrow, and few enlarged posteriorly; vocal sac indistinct; vocal slits present. Arms slender, forearms more robust than upper arms; hand with fingers slender, not fringed and webbed about one third; distal end of the third and fourth fingers slightly expanded laterally; finger I enlarged, covered by moderate nuptial pad with minuscule light brown horny asperities; relative lengths of fingers I< II < IV < III; subarticular tubercles single, rounded; outer metacarpal tubercle large, rounded; inner metacarpal tubercle rounded, slightly small than subarticular tubercles; supernumerary tubercles absent; skinfold poor developed on the articulation of the first and second phalanges of the fingers II, III, and IV. Thigh length slightly shorter than tibia length; sum of thigh and tibia lengths about 86.7% of snout–vent length. Tarsal length about 24.1% of the snout vent length. Foot with toes slender, poor fringed; webbing formulae: I1–2II1–3 III 21/2 –3 - IV 31/2 –2V; distal end of toes globose, not expanded laterally, relative lengths of toes I< II < III <V< IV; subarticular tubercles single, rounded, the same size of those of the fingers; outer metatarsal tubercle with the same size of subarticular tubercles, rounded; inner metatarsal tubercle large, approximately twice the outer, elongated; supernumerary tubercles present but scarce. Dorsal and lateral surfaces covered by tubercles and spinulose granules uniformly distributed, with different sizes, ventral surfaces rugose; surfaces of upper eyelid with few granules sparse and external margin poorly marked; elliptical set of pronounced white granules posterior to the corner of mouth.
Color in preservative. Dorsum light brown, with fading blotches, a head blotch extending on the upper eyelids merging with a ‘X’ shaped brown blotch on the scapular region and an inverse ‘Y’ shaped brown blotch on the sacral region extending to the inguinal region; on forearms, one transversal fading brown bar; one transversal fading brown bar on thigh, tibia, and tarsus; whitish tubercles in the corner of the mouth; lateral sides of the body dark brown; ventral surface whitish marbled with numerous irregular brown blotches.
Measurements of holotype. SVL 17.4; HL 6.4; HW 4.9; IND 1.4; ESD 2.8; ED 1.8; IOD 2.4; THL 7.4; TL 7.7; TAL 4.2; FL 6.9.
Variation. Specimens are congruent with respect to the morphological characters. Variation of measurements and descriptive statistics of males and females are presented in Tables 2 View TABLE 2 and 3. Sexual dimorphism can be observed on arms (slightly more robust in males), finger I (enlarged in males), and nuptial pad (on finger I of male).
Species p -distance Standard Error
D. oreites n/c n/c
D. carvalhoi 0.34% 0.33%
D. davori n/c n/c
D. brevipollicatus 1.60% 0.56%
D. lauroi 0.34% 0.23%
D. haddadi 1.83% 0.62%
D. jureia 2.72% 0.91%
D. organensis n/c n/c
D. imitator 2.30% 0.56%
D. berthalutzae 0.10% 0.09%
Distribution. Dendrophryniscus jureia is known only from the type locality, Estação Ecológica Juréia-Itatins ( Fig. 17 View FIGURE 17 ) (about 32 m above sea level), Municipality of Iguape, State of São Paulo, Brazil. Natural history. Unknown. Etymology. The name of the species is an allusion to the type locality, in the Estação Ecológica da Juréia-Itatins, Municipality of Iguape, State of São Paulo, Brazil.
TABLE 3. Range and mean ± standard deviation (in mm) of the measurements of the species of Dendrophryniscus (abbreviations of the measurements explained in the Material and methods). Females.
| SVL | HL | HW | IND | ESD | ED | IOD | THL | TL | TAL | FL | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| D. brevipollicatus N. 3 | 20.9‒27.7 (24.1 ± 3.41) | 6.2‒7.8 (7.0 ± 0.77) | 6.0‒6.9 (6.3 ± 0.41) | 1.6‒1.7 (1.7 ± 0.06) | 3.3‒3.8 (3.5 ± 0.25) | 1.8‒2.3 (2.0 ± 0.22) | 2.8‒3.5 (3.2 ± 0.31) | 8.9‒11.2 (9.9 ± 0.95) | 9.0‒11.2 (10.0 ± 0.99) | 5.4‒6.9 (6.0 ± 0.62) | 7.3‒11.0 (8.8 ± 1.60) |
| D. imitator N. 8 | 14.4‒20.7 (18.1 ± 1.94) | 5.8‒6.8 (6.3 ± 0.34) | 4.8‒5.4 (5.0 ± 0.23) | 1.4‒1.7 (1.5 ± 0.11) | 2.7‒3.2 (3.0 ± 0.15) | 1.6‒2.1 (1.8 ± 0.16) | 2.3‒2.6 (2.5 ± 0.11) | 6.7‒8.4 (7.5 ± 0.50) | 7.3‒9.1 (8.0 ± 0.52) | 4.2‒5.1 (4.6 ± 0.26) | 6.4‒8.9 (7.2 ± 0.75) |
| D. lauroi N. 6 | 18.0‒20.3 (19.1 ± 0.95) | 6.1‒6.6 (6.2 ± 0.19) | 4.7‒5.7 (5.4 ± 0.37) | 1.3‒1.5 (1.4 ± 0.08) | 2.6‒3.3 (3.0 ± 0.24) | 1.7‒2.3 (1.9 ± 0.22) | 2.1‒2.5 (2.3 ± 0.14) | 7.2‒8.0 (7.6 ± 0.31) | 7.3‒8.0 (7.8 ± 0.25) | 4.7‒5.5 (5.0 ± 0.28) | 6.0‒7.0 (6.5 ± 0.36) |
| D. davori N. 1 | 24.2 | 8.4 | 7.1 | 1.9 | 4.0 | 2.2 | 3.2 | 10.1 | 10.3 | 5.8 | 9.9 |
| D. haddadi N. 6 | 17.5‒22.8 (20.5 ± 1.97) | 6.0‒7.3 (6.7 ± 0.44) | 4.5‒6.1 (5.5 ± 0.56) | 1.4‒1.8 (1.5 ± 0.15) | 2.9‒3.6 (3.4 ± 0.26) | 1.8‒2.1 (1.9 ± 0.09 | 2.2‒2.7 (2.4 ± 0.19) | 7.0‒9.0 (8.1 ± 0.68) | 7.2‒9.1 (8.2 ± 0.63) | 4.6‒6.0 (5.2 ± 0.50) | 6.4‒7.9 (7.2 ± 0.50) |
| D. izecksohni N. 5 | 19.6‒24.2 (21.5 ± 1.81) | 6.1‒8.1 (7.2 ± 0.74) | 5.7‒7.0 (6.4 ± 0.47) | 1.3‒1.9 (1.6 ± 0.23) | 3.1‒3.8 (3.5 ± 0.26) | 2.0‒2.4 (2.1 ± 0.19) | 2.5‒3.4 (3.0 ± 0.40) | 8.7‒9.6 (9.2 ± 0.32) | 8.9‒9.7 (9.3 ± 0.29 | 5.5‒5.8 (5.6 ± 0.11) | 7.2‒10.6 (9.0 ± 1.26) |
| D. jureia N. 2 | 17.6‒19.6 | 5.0‒5.0 | 6.4‒6.4 | 1.5‒1.6 | 3.1‒3.1 | 1.7‒2.2 | 2.5‒2.6 | 8.3‒8.4 | 8.6‒8.6 | 5.1‒5.3 | 7.3‒7.8 |
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