Rugosuscandona, Külköylüoğlu & Akdemir & Yavuzatmaca & Schwartz & Hutchins, 2017

Külköylüoğlu, Okan, Akdemir, Derya, Yavuzatmaca, Mehmet, Schwartz, Benjamin F. & Hutchins, Benjamin T., 2017, Rugosuscandona, a New Genus of Candonidae (Crustacea: Ostracoda) from Groundwater Habitats in Texas, North America, Species Diversity 22, pp. 175-185 : 176-179

publication ID	https://doi.org/ 10.12782/sd.22_175
publication LSID	lsid:zoobank.org:pub:CD308AA8-CCA0-4831-B7CB-3052E946588F
persistent identifier	https://treatment.plazi.org/id/03EEE02B-7D08-FFFD-4FAE-A5AFC1D4D293
treatment provided by	Felipe
scientific name	Rugosuscandona
status	gen. nov.

Treatment

Order Podocopida Sars, 1866 View in CoL Suborder Cypridocopina Baird, 1845 Superfamily Cypridoidea Baird, 1845 Family Candonidae Kaufmann, 1900 Subfamily Candoninae Kaufmann, 1900 Genus Rugosuscandona gen. nov. ( Figs 2–6 View Fig View Fig View Fig View Fig View Fig )

Diagnosis. Carapace sub-rectangular and ornament- ed with wrinkled hexagonal and/or pentagonal cells ( Fig. 2A–J View Fig ). Pore canals with sensory seta each elevated on surface especially at anterior and posterior margins of valves ( Fig. 2H, I View Fig ). LV overlaps RV on all sides ( Fig. 2A, B, E–G View Fig ). LV with flange (protrusion) postero-dorsally, covering RV. Inner lamella wide at both ends ( Fig. 3A View Fig ). A1 6-segmented without Rome and Wouter’s organs ( Fig. 4A View Fig ). A2 4-segmented lacking y1–2, z, t, and swimming setae ( Figs 3B View Fig , 4B, C View Fig ). Mandibular palp 4-segmented ( Fig. 4D View Fig ). First segment without alpha seta. Second segment with 3 smooth setae internally, and without setae externally. Penultimate (third) segment with 1 seta externo-distally and 1 interno-distally. Gamma seta absent (but see discussion). Terminal segment fused with claw, and with 2 setae interno-distally and 1 seta externo-distally. L: W ratio of terminal segment less than 2: 1. Maxillula ( Fig. 4E View Fig ) with 3 endites and 2-segmented palp. Claws on third endite smooth. Terminal segment of Mxl-palp trapezoidal to square. First thoracopod symmetrical in female ( Fig. 5C View Fig ) but asymmetrical (prehensile palps) in male ( Fig. 6A, B View Fig ), not segmented and without “a”, “c”, and “b” setae; only “d” seta present. Masticatory process of T1 with 7 setae. Walking leg (T2) 5-segmented with a “d1” seta on basal segment ( Fig. 5A View Fig ). Cleaning leg (T3) 4-segmented with “d1” and “d2” setae (d2≥d1) ( Fig. 5B View Fig ). Seta “e” not present on third segment. Penultimate segment with “f ” and “g” setae. Terminal segment with 2 long and 1 short setae (h3>h2>h1). Uropod (furca) uniramous, rod-like with claw ( Figs 3C View Fig , 5D View Fig ). Genital lobe almost round and without appendages ( Fig. 5D View Fig ). Labium with 4+4 small spines ( Fig. 5E View Fig ). Zenker's organ with 4+2 whorls ( Fig. 6C View Fig ). Hemipenis large (largest of all other extremities) with square outer lobe (lobe a), large subtriangular inner lobe (lobe b), and small square to oval medial lobe (lobe h) ( Fig. 6D View Fig ).

Type species. Rugosuscandona scharfi sp. nov.

Etymology. A Latin word rugosus, meaning “wrinkled”, is combined with the genus name Candona (gender feminine) in reference to the wrinkled ornamentation on the carapace surface.