Dryolimnas Sharpe 1893
Creators: name: Hume, Julian Pender
Publisher: name: Zenodo
Year: 2019
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Aves
Gruiformes
Rallidae
Dryolimnas

description: Genus Dryolimnas Sharpe, 1893
Dryolimnas Sharpe, 1893, p.26 = Rallus cuvieri Pucheran, 1845, p.279. Type by original designation
Etymology: From Greek drus, tree, and Modern Latin, limnas rail (> Gr. limnas of the marsh> limnç marsh)
Diagnosis of relevant skeletal anatomy: Rostrum (Fig. 25), short and straight; in dorsal view, os nasale narrower than os premaxillare; in lateral view, narial opening long and approximately 45% of bill length; foramina neurovascularia small and few in number; in ventral view, os premaxillare deeply excavated.
Humerus (Fig. 26): in caudal view, shaft dorsoventrally curved; caput humeri bulbous; tuberculum ventrale prominent and directed caudad; incisura capitis deeply excavated; tuberculum dorsale prominent and directed laterad; crista deltopectoralis short and weakly triangular; fossa pneumotricipitalis deeply excavated; crista bicipitalis terminates in sharp angle to shaft; margo caudalis raised and extends distally to mid-shaft; processus flexorius extends further distad than condylus dorsalis; indistinct processus supracondylaris dorsalis; fossa olecrani deeply excavated; in cranial view, sulcus ligamentosa transversus shallow; sulcus n. coracobrachialis indistinct; fossa m. brachialis deeply excavated; epicondylus ventralis prominent.
Pelvis (Fig. 27): in dorsal aspect, ala preacetabularis ilii expanded proximally, lateral edges angular; crista spinosa synsacri forms a single distinct ridge; proximal end of extremitas cranialis synsacri extends further craniad than crista iliaca dorsalis; foramina intertransversariae large and oval-shaped; in lateral view, ala preacetabularis deep with strongly arched crista iliaca dorsalis.
Femur (Fig. 28): proximal and distal ends incurved both posteriorly and internally, exhibiting two curvatures in two different planes; in cranial aspect, crista trochanteris forms distinct, dorsally facing ridge; in caudal aspect, deeply excavated medial to facies articularis acetabularis; condylus medialis and condylus lateralis connected with distinct ridge.
Tibiotarsus (Fig. 29): robust, with wide and deep proximal and distal ends; in cranial aspect, crista cnemialis distinct, directed cranio-dorsad; crista fibularis long and triangular distally; pons supratendineus wide; canalis extensorius deflected mediad; condylus lateralis larger than condylus medialis; sulcus m. fibularis deeply excavated; in caudal aspect, trochlea cartilaginis tibialis deeply excavated.
Tarsometatarsus (Fig. 30): cotyla lateralis lower than cotyla medialis; retinaculum extensorium ossified; trochlea metatarsi II shorter than other trochlea and directed strongly plantad; in dorsal aspect, trochlea metatarsi III largest with a deep sulcus extending onto facies dorsalis; foramen vasculare distale large and oval-shaped; on proximal end, crista medialis flexoris digitorum longus present; sulci for tendon of musculus flexor perforatus digiti II and musculus flexor hallucis longus present.
description: Published as part of Hume, Julian Pender, 2019, Systematics, morphology and ecology of rails (Aves: Rallidae) of the Mascarene Islands, with one new species, pp. 1-107 in Zootaxa 4626 (1) on pages 38-39, DOI: 10.11646/zootaxa.4626.1.1, http://zenodo.org/record/3335513