Heteronybelinia annakohnae, Jr & Boeger, 2005

Jr, Joaber Pereira & Boeger, Walter A., 2005, Larval tapeworms (Platyhelminthes, Cestoda) from sciaenid fishes of the southern coast of Brazil, Zoosystema 27 (1), pp. 5-25 : 9

Heteronybelinia annakohnae n. sp.

( Fig. 2 A-C)

TYPE HOST. — Ctenosciaena gracilicirrhus (LH = 1; P = 3.03; MI = 1.0; MA = 0.03).

TYPE MATERIAL. — Holotype: CHIOC 33790; Paratypes: CHIOC 33791 to 33794, 33795; USNPC 87422, 87423.

TYPE LOCALITY. — Rio Grande, Brazil.

ETYMOLOGY. — This species is named for Dr Anna Kohn, Instituto Oswaldo Cruz, in recognition of her contributions to the knowledge of helminthology in South America.

ADDITIONAL HOSTS. — Menticirrhus americanus (LH = 33.9-38.7; P = 4. 08; MI = 1.0; MA = 0.04), Cynoscion jamaicensis (LH = 22.0-26.9; P = 3.33; MI = 1.0; MA = 0.03) and Cynoscion guatucupa (LH = 23.3- 40.7; P = 3.81; MI = 1.25; MA = 0.05).

SITE OF INFECTION. — Coelomic cavity.

DESCRIPTION (based on seven specimens)

Scolex craspedote, 0.54 ± 0.06 (0.44-0.62) long; maximum width 0.29 ± 0.03 (0.24-0.35) at bothridia level. Four bothridia 0.20 ± 0.01 (0.19- 0.22) long, almost totally overlapping bulbs. Margin of bothridia densely covered by short cuticular spines. Sheaths short, irregularly sinuous. Bulbs 0.18 ± 0.01 (0.12-0.40) long, 0.04 ± 0.01 (0.02-0.05) wide. Length/width ratio of bulbs 3.25 ± 0.67 (2.80-4.25). Total length/length ratio of bulbs, 3.66 ± 0.67 (2.75-4.60). Pars postbulbosa distinct, long, about 65% of total length. Velum 0.12 ± 0.02 (0.10-0.19) long, appendix 0.27 ± 0.05 (0.18-0.35) long. Hooks homeomorphous, uncinate, in continuous spirals; basal row with smaller hooks, 5-6 μm long; base 3-4 μm wide, other hooks 12 μm ± 2.44 (8-15) long, base 9 μm ± 1.32 (7-11) wide. Half spiral with six hooks.

REMARKS

P a l m (1 9 9 9) r e c o g n i z e s t h r e e s p e c i e s o f

Figures

FIG. 2. — A-C, Heteronybelinia annakohnae n. sp.; A, larva in toto; B, hooks of the first rows of the tentacles; C, basal and metabasal armature; D-F Heteronybelinia estigmena (Dollfus, 1960); D, Larva in toto; E, basal armature; F, hooks of the first rows of the