Mazepovacandona spicata (Mazepova, 1982)

Karanovic, Ivana & Sitnikova, Tatiana Ya., 2017, Morphological and molecular diversity of Lake Baikal candonid ostracods, with description of a new genus, ZooKeys 684, pp. 19-56 : 28-29

Mazepovacandona spicata (Mazepova, 1982) Figs 10, 11, 14F, 15F

Candona spicata sp. n. - Mazepova (1982): p. 125, fig. 9 A–N

Candona spicata Mazepova - Mazepova (1990): p. 99, fig. 32, 33B

Material examined.

One male soft body used for DNA extraction and after that dissected and mounted on one glass slide (shell of one SEM stub), one juvenile kept in 95% alcohol, all collected from 12-15 m depth by SCUBA diving off Listvyanka, 51°51'51.3"N, 104°50'37.8"E, 12 September 2015, collectors: Igor Khanaev and Ivan Nebesnykh.

Short redescription.

Valves elongated in lateral view, with almost straight dorsal margin (Fig. 10A, B). Anterior end broadly rounded, posterior margin narrow and inclined. Valve margins framed with narrow fringe (Fig. 10C). Ventral margin concave around middle. Surface smooth and covered with pores, all equipped with lip (Fig. 10D). Length around 0.8 mm.

A1 7-segmented, some posterior setae transformed into claws (Fig. 11A). Male A2 with subdivided penultimate segment and t2- and t3-setae transformed into sexual bristles; z1- and z2-setae transformed into claws, z3-seta untransformed; G1- and G3-claws reduced and short, G2-claw long (Fig. 11B). Md-palp (Fig. 11D) with 3+2 setae in bunch, gamma-seta pappose. Prehensile palps (Fig. 11E, F) with especially long, thin, and curved fingers. L6 (Fig. 11H) with basal seta reaching far beyond basal segment. L7 (Fig. 11G) clearly 5-segmented, penultimate segment only partly subdivided; basal segment with d1- and dp-setae; no e- or f-setae, g-seta long; terminal segment with setae h2- and h3- long and h1-seta shorter. UR (Fig. 11I) with curved anterior margin and short posterior seta. Hemipenis (Fig. 11J, 15F) with rounded and not projecting a-lobe; M-peace rounded distally, ejaculatory tube with pointed distal end. Zenker organ (Fig. 15F) with 5+2 whorls of spines; anterior cap hemispherical, with strongly sclerified margin, lattice elaborate, on anterior side adjoined by longer spines. Eyes large and dark.