Catenotaenioides

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 : 22-24

Catenotaenioides n. g.

Diagnosis: Scolex rounded apically. Neck present, widening posteriorly. Proglottids acraspedote. Mature proglottids usually slightly shorter than wide, pregravid and gravid proglottids elongate. Genital pores irregularly alternating, positioned near anterior margin of proglottid. Genital ducts crossing longitudinal canal dorsally. Testes numerous, as single group posterior to female glands, confined by longitudinal canals. Ovary asymmetrical, extending anterior to level of genital pore. Vitellarium poral. Developed uterus longitudinal trunk with numerous lateral branches in right angle with uterine trunk. In murid rodents ( Apodemus spp.). Type species: C. kirgizica ( Tokobaev, 1959) n. comb. Syn. Catenotaenia kirgizica Tokobaev, 1959 .

Remarks: Among the Catenotaeniinae, Catenotaenioides is most closely related to Catenotaenia . Besides the independent, basal phylogenetic position of Catenotaenioides , it differs from Catenotaenia in its acraspedote proglottids (craspedote or pseudocraspedote in the latter), shortness of mature proglottids (always longer than wide in the latter), anterior position of the genital pores (more posterior in the latter) and posteriorly widening neck (usually uniform in the latter). Compared with the other genera of the Catenotaeniinae, Catenotaenioides differs from Pseudocatenotaenia in the lateral extent of testes and uterus (across longitudinal canals in the latter) and position of the genital pore (more posterior in the latter). The new genus can be distinguished from Hemicatenotaenia by the position of the female glands with respect to the genital pore (more posterior in the latter) and from Quentinia by the shape of the ovary (symmetrical, horseshoe-shaped in the latter) and position of the vitellarium (median in the latter).

Externally, C. kirgizica resembles species of Skrjabinotaenia (Skrjabinotaeniinae), which also have acraspedote, short proglottids, anteriorly positioned genital pores and posteriorly widening neck. However, Skrjabinotaenia spp. differ fundamentally from Catenotaenioides in having testes surrounding ovary in various ways, not restricted posterior to ovary as in C. kirgizica and other species of the Catenotaeniinae (see Tenora et al. 1980).