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| Definitions of the following characters are given here. |
| Species: Lithobates warszewitschii | |
| Genus: Lithobates |
| Family: Ranidae |
| Species in Frost database: Lithobates warszewitschii |
| ID information: MH603393.1 / smf92369 |
| NCBI name: Lithobates warszewitschii |
| Ecomorphological guild (s): benthic |
| Collector: G. Köhler |
| Country: Costa Rica |
| Locality 1: Alajuela |
| Locality 2: Volcan Tenorio |
| Coordinate 1: 10.720083 |
| Coordinate 2: -85.009983 |
| Aquatic habitat: lotic |
| Gosner stage: 37 |
| Total length: 57.715 mm |
| Body length: 20.474 mm |
| Tail length: 37.241 mm |
| Maximum body heigth: 10.325 mm |
| Maximum body width: 12.971 mm |
| Snout-nostril-distance: 2.247 mm |
| Snout-spiraculum-distance: 13.233 mm |
| Eye diameter: 2.545 mm |
| Internostrial distance: 4.671 mm |
| Interorbital distance: 7.246 mm |
| Maximum height of tail: 11.91 mm |
| Maximum heigth of dorsal fin: 4.257 mm |
| Maximum heigth of ventral fin: 3.645 mm |
| Maximum height of tail muscle: 5.93 mm |
| Maximum width of tail muscle: 6.654 mm |
| Oral disc width: 5.656 mm |
| Position of oral disc: ventral |
| Disc emarginated: no |
| LKRF: 4(2-4)/4(1) |
| Anterior keradont rows: 4 |
| Posterior keradont rows: 4 |
| Anterior gaps: yes |
| Anterior rows with gaps: 3 |
| Posterior gaps: yes |
| Posterior rows with gaps: 1 |
| Relative length of anterior rows: 3>2=4>1 |
| Relative length of posterior rows: 1>2>3>4 |
| Anterior papillae: 1 |
| Posterior papillae: 1b |
| MPRF: (1)/2-3/1-2 |
| Shape of marginal papillae: blunt |
| Submarginal papillae: no |
| Jaw sheaths present: yes |
| Jaw sheaths serrated: clearly |
| Upper jaw sheath shape: moderately arched |
| Lower jaw sheath shape: v |
| Thickness of jaw sheaths: medium |
| Nostrils present: yes |
| Position of nostrils: anterodorsal |
| Direction of nostrils: laterodorsally |
| Shape of nostrils: ovoid |
| Nostrils with structure: half torus + ho |
| Position of eyes: laterally |
| Direction of eyes: laterally |
| Position of spiracle: msl |
| Shape of spiracle: wall absent |
| Position of vent tube: dextral c |
| Shape of vent tube: dextral tube |
| Attachment of vent tube to ventral fin: c |
| Lateral line system visible: yes |
| Position of lateral line system: laterally, dorsally |
| Relative heigth of fins: d=v |
| Dorsal fin reaches onto body: no |
| Margin of ventral fin: a |
| Margin of dorsal fin: a |
| Tail tip: round |
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