Tachygonetria longicollis ( Schneider, 1866 )

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 : 196

Tachygonetria longicollis ( Schneider, 1866)

( Fig. 2 )

References and synonymes: see Petter 1966.

HOST. — Testudo graeca Linnaeus, 1758 .

SITE OF INFECTION. — Large intestine.

MATERIAL EXAMINED. — Morocco. Settat, 7°45’30”W, 32°30’45”N, 22.VII.1999, S. Bouamer, 4, 4 ( MNHN 224HG).

REDESCRIPTION

General

Medium-sized body, males smaller than females. Cuticle of cephalic end without any prominent formation. Cephalic sense organs formed by the outer ring of four sub-lateral papillae, an inner ring of papillae not observed; large, sessile and slightly external amphids. Short buccal cavity, armed with three teeth. Long and narrow oesophagus.

Female ( Fig. 2A, D )

Triangular oral opening with two cycles of lips the external cycle formed by three transparent and short lips; each lip presents a light cut in the middle on its internal side; the second cycle formed by three transparent lips, broader than the lips of the external cycle. Short and robust tail.

Measurement of females based on four specimens: length 4.414 (4.100-4.440) mm, with maximal width 490 (415-500). Nerve ring 236 (218-240) from anterior end. Excretory pore 1.700 (1.571 -1.770) from anterior end.

Figures

FIG. 2. — Tachygonetria longicollis (Schneider, 1866); 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;