Nitocra Boeck, 1865

Yildiz, Nuran Oezlem & Karaytug, Suephan, 2024, Taxonomic revision of the Nitocra affinis Gurney, 1927 species complex (Harpacticoida, Ameiridae) with descriptions of four new species and re-evaluation of its subspecies, ZooKeys 1191, pp. 35-74 : 35

Genus Nitocra Boeck, 1865

Diagnosis.

Body semi-cylindrical. Rostrum small, triangular and defined at base. Anal operculum apically with row of robust spinules. Caudal rami short, and with seven setae. Antennule eight-segmented in female, nine- or ten-segmented and haplocer in male. Antenna with coxa, allobasis, one-segmented endopod, and one-segmented exopod. Partial suture line between basis and first endopodal segment near base of exopod indicates ancestral segmentation. Exopod one-segmented with three setae. Mandible with coxal gnathobase with coarse teeth ventrally, one unipinnate seta dorsally; palp two-segmented, comprising basis and one-segmented endopod. Maxillular endopod represented by minute but distinct segment with two setae. Exopod absent. Maxilla with two endites on the syncoxa. Maxilliped subchelate; syncoxa with subapical seta; endopod represented by strong claw accompanied at base by a minute naked seta. P1-P4 with three-segmented exopod and three-segmented endopod. Inner spine of basis of P1 hook-like in male. P1 exp-2 with one inner seta, P1 exp-3 with four or five setae. P2-P4 exp-1 without inner setae, exp-2 with one inner seta. P2-P4 without sexual dimorphism. P5 with baseoendopod and separate exopod. Male P6 asymmetrical. Sexual dimorphism in the antennule, the inner spine of P1 basis, the inner distal seta of P3 exp-3, P5 and P6 and urosomal segmentation.

Type species.

Nitocra typica Boeck, 1865 (type species by indication).

Valid species and subspecies.

N. affinis Gurney, 1927; N. arctolongus Shen & Tai, 1973; N. australis Soyer, 1975; N. balli Rouch, 1972; N. balnearia Por, 1964; N. bdellurae (Lidell, 1912); N. bisetosa Mielke, 1993; N. blochi Soyer, 1974; N. californica Lang, 1965; N. cari Petkovski, 1954; N. chelifer Wilson, 1932; N. colombiensis Fuentes-Reinés & Suárez-Morales, 2014; N. delaruei Soyer, 1974; N. divaricata caspica Behning, 1936; N. divaricata divaricata Chappuis, 1923; N. dubia Sars, 1927; N. elegans (Scott, 1905); N. elongata Marcus, 1968; N. esbe Karanovic, Eberhard, Cooper & Guzik, 2014; N. evergladensis Bruno & Reid, 2002; N. fallaciosa baltica Lang, 1965; N. fallaciosa fallaciosa Klie, 1937; N. fragilis fragilis Sars, 1905; N. fragilis paulistana Jakobi, 1956; N. galapagoensis Mielke, 1997; N. gracilimana Giesbrecht, 1902; N. hamata Bodin, 1970; N. hibernica bulgarica (Apostolov, 1976); N. hibernica hibernica (Brady, 1880); N. humphreysi Karanovic & Pesce, 2002; N. hyperidis Jakobi, 1956; N. incerta (Richard, 1893); N. intermedia Pesce, 1983; N. karanovici Chullasorn, Kangtia & Klangsin, 2014; N. kastjanensis Kornev & Chertoprud, 2008; N. koreana Chang, 2007; N. lacustris azorica Kunz, 1983; N. lacustris colombianus Reid, 1988; N. lacustris lacustris (Schmankevitsch, 1895); N. lacustris pacifica Yeatman, 1983; N. lacustris richardi Karanovic, Eberhard, Cooper & Guzik, 2014; N. lacustris sinoi Marcus & Por, 1961; N. laingensis Fiers, 1986; N. langi Karanovic, Eberhard, Cooper & Guzik, 2014; N. malaica Kiefer, 1929; N. mediterranea jakubisiaki Karanovic, Eberhard, Cooper & Guzik, 2014; N. mediterranea mediterranea Brian, 1928; N. medusae Humes, 1953; N. minor minor Willey, 1930; N. mozambica Huys, 2021; N. parafragilis Roe, 1958; N. phlegraea Brehm, 1909; N. phreatica Bozic, 1964; N. pietschmanni Chappuis, 1934; N. platypus bakeri Chappuis, 1930; N. platypus platypus Daday, 1906; N. pontica Jakubisiak, 1938; N. pori Karanovic, Eberhard, Cooper & Guzik, 2014; N. psammophila Noodt, 1952; N. pseudospinipes Yeatman, 1983; N. puebloviejensis Fuentes-Reinés, Suárez-Morales & Silva-Briano, 2022; N. pusilla Sars, 1911; N. quadriseta Wells & Rao, 1987; N. reducta fluviatilis Galhano, 1968; N. reducta reducta ( Schäfer, 1936); N. reunionensis Bozic, 1969; N. rijekana Petkovski, 1954; N. sewelli husmanni Kunz, 1976; N. sewelli sewelli Gurney, 1927; N. sphaeromata Bowman, 1988; N. spinipes armata Lang, 1965; N. spinipes orientalis Sewell, 1924; N. spinipes spinipes Boeck, 1865; N. stygia Por, 1968; N. taylori Gómez, Carrasco & Morales-Serna, 2012; N. typica adriatica Petkovski, 1954; N. typica typica Boeck, 1865; N. uenoi Miura, 1962; N. vietnamensis Tran & Chang, 2012; N. wolterecki Brehm, 1909; N. yeelirrie Karanovic, Eberhard, Cooper & Guzik, 2014.