A lungworm nematode from amphibian hosts at Aswan Governorate, Egypt.

2 Abstract: Females of Rhabdias species were obtained from the lungs of the maculated toad Bufo regularis in Aswan, Egypt. The parasitized protandrous hermaphroditic female was described in details and was compared with the previously described species from Egypt. The present specimen was characterized by possessing a swelling cuticle at the anterior end, which extended to the posterior end; having four lips and two teeth; small buccal capsule; short oesophagus and large egg size. The present authors preferred to stop the identification of the parasite at the generic level for more studies on its life cycle to obtain males. Also, it was noticed that a lot of new species of Rhabdias, were described during this decade all over the world based on minor characters as shape and width of oesophagus in relation to intestine; a character which was found to be affected and changed by ageing. Currently, authors suggested that those species should be revised on basis of the life cycle and on the male characters as well as females' characters.