Tachygonetria palearcticus ( Petter, 1966 )

Bouamer, Salah & Morand, Serge, 2005, Descriptions of two new species of the genus Tachygonetria Wedl, 1862 (Nematoda, Pharyngodonidae) and redescriptions of five species parasites of Palaearctic Testudinidae, Zoosystema 27 (2), pp. 193-209 : 200

Tachygonetria palearcticus ( Petter, 1966)

( Fig. 5 )

References and synonymes: see Petter 1966.

HOSTS. — Testudo graeca Linnaeus, 1758 , Testudo hermanni Gmelin, 1789 , Testudo horsfieldii Gray, 1844 .

SITE OF INFECTION. — Large intestine.

MATERIAL EXAMINED. — Morocco. Settat, 7°45’30”W, 32°30’45”N, 30.VII.1999, S. Bouamer, 3, 3 ( MNHN 227HG of the collection from T. graeca ).

Spain. South Catalonia, 2°11’17”E, 41°23’14”N, 17.XII.1993, Dr C. Feliu, 3, 3 ( MNHN 227HG of the collection from T. graeca ).

REDESCRIPTION

General

Species with thin body, and pointed ends. Triradiate oral opening with two cycles of lips: the external cycle formed by three transparent and short lips, the second cycle formed by three transparent and prominent lips bearing a conical and frontal hyaline projection ( Fig. 5A, B, D, E ). Cephalic sense organs formed by the outer ring of four sub-lateral papillae, an inner ring of papillae not observed; large, sessile and external amphids. Three small and crescent-shaped cuticularized plates disposed at the junction of the anterior ends of oesophageal sectors and located immediately under apical cuticle. Short buccal cavity, armed with three small teeth. Long tail.

In the male ( Fig. 5B, C, E, F ), cloaca with two pairs of genital papillae: one rosette-shaped and middle-sized pre-anal pair, with a posterior expansion, and one elongated post-anal pair of papillae. One pair of sessile papillae at the end of the tail. Long, slender and needle-shaped spicule.

Figures

FIG. 5. — Tachygonetria palearcticus (Petter, 1966); A, cephalic end, en face of female; B, cephalic end, en face of male; C, caudal extremity, ventral view of male; D-F, scanning electron micrograph (SEM); D, cephalic end of female; E, cephalic end of male; F, caudal extremity of male, ventral view. Abbreviation: d, crescent-shaped cuticularized plates. Scale bars: A, B, 10 μm; C, 25 μm;