Kawakatsua Sluys, 2019

Sluys, Ronald & Laumer, Christopher, 2019, A new genus and species of a terrestrial cavernicolan planarian from Barro Colorado Island, Panama (Platyhelminthes, Tricladida, Cavernicola), Zootaxa 4586 (1), pp. 187-193 : 188

Genus Kawakatsua Sluys , gen. nov.

Etymology. The generic name honours the triclad specialist Prof. Dr. Masaharu Kawakatsu in recognition of his major contribution to the field of planarian systematics. Gender: feminine.

Diagnosis. Dimarcusidae without pigmentation or eyes; pharynx located in the posterior half of the body; mouth opening located halfway in the pharyngeal cavity; few, principally ventral testes distributed irregularly in the body and extending from a position far posterior to the ovaries to directly behind the pharyngeal cavity; ovaries situated ventrally at some distance behind the brain; sperm ducts strongly recurve, forming a loop, before uniting to give rise to the ejaculatory duct; cone-shaped penis papilla oriented horizontally; posterior to gonopore oviducts turn dorso-medially, uniting to form common oviduct, which is oriented more or less perpendicular to the bursal canal and opens into the latter shortly before the canal communicates with the copulatory bursa; sac-shaped copulatory bursa lacks a distinct, single lumen and is mostly filled with a mass of syncytial cells, with interspersed nuclei.