Berguecythere insularis Coimbra &amp; Bottezini &amp; Machado 2013, sp. nov.
Creators: name: Coimbra, João C.
name: Bottezini, Silvia R.
name: Machado, Cláudia P.
Publisher: name: Zenodo
Year: 2013
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Ostracoda
Podocopida
Hemicytheridae
Berguecythere
Berguecythere insularis

description: <b> <i>Berguecythere insularis</i> sp. nov.</b> (Figs 28-41) <i>Aurila</i> sp. 1 ANTONIETTO et al., 2012:42-43, Fig. 7: 10-19; Table 12. Type material. Holotype, MP-O-2433, LV, &amp;female;, length: 0.44 mm; height: 0.25 mm. Paratypes. MP-O-2434, RV, &amp;female;, length: 0.42 mm; height: 0.23 mm; MP-O-2435, RV, &amp;female;, length: 0.42 mm; height: 0.23 mm; MP-O-2436, LV, &amp;female;, length: 0.46 mm; height: 0.25 mm; MP-O-2437, LV, &amp;male;, length: 0.44 mm; height: 0.23 mm; MP-O-2438, RV, &amp;male;, length: 0.43 mm; height: 0.22 mm; MP-O-2439, carapace, &amp;female;, width: 0.20 mm; length: 0.44 mm; MP-O-2440, carapace, &amp;male;, width: 0.18 mm; length: 0.45 mm; MP-O-2441, LV, juvenile, length: 0.37 mm; height: 0.21 mm; MP-O-2442, LV, juvenile, length: 0.31 mm; height: 0.18 mm; MP-O-2443, RV, juvenile, length: 0.25 mm; height: 0.14 mm; MP-O-2444, RV, &amp;female;, length: 0.42 mm; height: 0.23 mm. <b>Etymology.</b> From Latin origin, <i>insularis</i> = of an island, because of its first record being restricted to an archipelago. <b>Type locality.</b> Archipelago of São Pedro and São Paulo, Equatorial Atlantic. <b>Occurrence.</b> See Table III. <b>Description.</b> A thick-shelled genus of the subfamily Hemicytherinae, subquadrate to subrectangular in lateral view. Greatest height at the anterior cardinal angle. Anterior margin obliquely rounded. Posterior margin caudate in RV and subcaudate in LV. Dorsal margin somewhat conveX in LV and subrectilinear in RV. Ventral margin with conspicuous oral concavity. Surface covered with reticulate ornament with the peripheral fossae secondarily gently punctate. A delicate ridge, which starts at the ventral end, runs parallel to the anterior margin, crosses the well-developed eye tubercle, and becomes more slender along the dorsal margin. An ear-shaped ridge starts around the central area and ascends to its heaviest width in front at the posterior cardinal angle. From there it descends as a short stretch and turns forward and then disappears near the midlength. This ear-shaped ridge gives rise to a posterodorsal protrusion more developed in RV. Normal porecanals sieve-type. In dorsal view acuminate anteriorly, maXimum width posteriorly. In internal view, hinge robustly developed, hemiamphidont, the posterior terminal element of the RV being a dentate bar with 6-7 small teeth and a smooth distal area. Calcified inner lamella well-developed with narrow vestibulae at each end. Radial pore-canals numerous, straight, mostly simple with some intercalated branching ones. Selvage conspicuous and parallel to the outline. Adductor muscle scars a row of four scars, the dorso-median one subdivided. Three frontal scars. SeXual dimorphism conspicuous; male more elongate and less wide, and with a more secondarily reticulate dorsal region.
description: Published as part of <i>Coimbra, João C., Bottezini, Silvia R. &amp; Machado, Cláudia P., 2013, Ostracoda (Crustacea) from the Archipelago of São Pedro and São Paulo, Equatorial Atlantic, with emphasis on a new Hemicytheridae genus, pp. 289-301 in Iheringia. Série Zoologia 103 (3)</i> on page 292, DOI: 10.1590/s0073-47212013000300012, http://zenodo.org/record/7826611