Catenotaenia Janicki, 1904

Haukisalmi, Voitto, Hardman, Lotta M. & Henttonen, Heikki, 2010, Taxonomic review of cestodes of the genus Catenotaenia Janicki, 1904 in Eurasia and molecular phylogeny of the Catenotaeniidae (Cyclophyllidea), Zootaxa 2489, pp. 1-33 : 4-6

Catenotaenia Janicki, 1904

Type species: Catenotaenia pusilla ( Goeze, 1782) . For synonyms, see Spasskii (1951).

Diagnosis: Scolex apically flat or with small cone. Neck long, of uniform width. Proglottids craspedote or "pseudocraspedote”. Mature and subsequent proglottids usually distinctly longer than wide. Genital pores irregularly alternating, positioned roughly at border between anterior and middle thirds of proglottid margin. Genital ducts crossing longitudinal canal dorsally. Testes numerous, as single group or two longitudinally (partly) divided groups posterior to female glands, confined by longitudinal canals. Ovary asymmetrical, extending anterior to level of genital pore. Vitellarium poral. Developed uterus longitudinal, with numerous lateral branches in right angle with uterine trunk. In myomorph (Muroidea), castorimorph ( Heteromyidae , Geomyidae ) and sciuromorph ( Sciuridae ) rodents.

Remarks: The present phylogenetic analysis shows that the Eurasian cestodes morphologically referable to Catenotaenia form a monophyletic assemblage and that they are separate from the basal Catenotaenioides n. g. (below). For morphological differences between Catenotaenia and other genera representing Catenotaeniinae ( Hemicatenotaenia Tenora, 1977 , Pseudocatenotaenia Tenora, Mas-Coma, Murai & Feliu, 1980 , Quentinia Spasskii, 1969 ), see Tenora et al. (1980).

FIGURE. 1. A Bayesian consensus phylogram of partial 28S ribosomal RNA sequences of catenotaeniid cestodes. Values at nodes show posterior probabilities if>50%. Numbers in parentheses following each sequence refer to Table 3. The three main Old World sublineages marked by capital letters (A–C).

FIGURE. 2. Catenotaenia pusilla from Mus musculus . A, B. Mature proglottid (scale bars 0.30 mm). C. Terminal genital ducts (scale bar 0.10 mm). D. Uterus in pregravid proglottid (scale bar 0.50 mm). E. Uterus in pregravid proglottid (scale bar 0.30 mm). F. Scolex and neck (scale bar 0.20 mm).