Parasphaerolaimus magdolnae sp. n. (Nematoda, Sphaerolaimidae) with intra-uterine development of its offspring from a Brazilian estuarine system Author Cavalcanti, Mariana Da Fonseca Author Venekey, Virag text Zootaxa 2017 2017-11-29 4358 2 339 350 journal article https://doi.org/10.11646/zootaxa.4358.2.7 04415c8a-194f-4aba-b3f7-eec0161010bb 1175-5326 1068099 890B1FAE-A27C-4788-80FE-D063E80347A7 Diagnosis of Parasphaerolaimus Ditlevsen, 1919 (after Fonseca & Bezerra, 2014 and Zograf et al . 2017 ). Sphaerolaimidae . Cuticle striated or annulated. Six outer labial setiform sensilla and four cephalic setiform sensilla in one circle, with cephalic ones longer than labial ones. Eight groups of subcephalic setae corresponding to those of the Sphaerolaiminae occur in all four juvenile stages as well as in the adults. Stoma wide, barrel-shaped; only at basis surrounded by pharyngeal tissue. Inner wall of pharynx with thick cuticle. Wall of the buccal cavity consisting of six anterior and three posterior, circularly arranged elements. The anterior-most part of the inner pharyngeal wall transformed into six plates. Sexual dimorphism in size of amphids. Ventral gland present, opening behind nerve ring. Males usually with two testes, anterior one either on the left or on the right side of intestine, posterior one on the opposite side. Females with one (anterior) ovary on the left or right side of intestine. Type species: P. paradoxus Ditlevsen, 1919