Abstract
The purpose of this article is to describe a new species of Rhabdias Stiles and Hassall, 1905 from West Bengal, India. Rhabdias bengalensis sp. nov. (Nematoda, Rhabdiasidae) recovered from the lungs of Asian common toad, Duttaphrynus melanostictus (Schneider, 1899), collected from Illambazar town, Birbhum district of West Bengal, India. The collected nematode specimens were clean by shaking them in 0.67% NaCl solution and were killed and fixed in steaming 70% alcohol; lactophenol was used as a mounting medium for light microscopic examination. The lactophenol treated specimens after examination were directly transferred to 70% alcohol and could be stored satisfactorily. The new species is named as, R. bengalensis sp. nov. (Nematoda, Rhabdiasidae), in reference to its locality of collection, West Bengal, India. The worms are small [(2.84-2.96 mm) in length], anterior end somewhat truncated and posterior end tapering. R. bengalensis sp. nov. is characterised by rounded mouth without lips, inflated cuticle, cup-shaped buccal capsule, pre-equatorial vulva and a conical tail. The present nematodes, thus, appear to be new in the field of science and name R. bengalensis sp. nov. is proposed for them. R. bengalensis sp. nov. represents 17th species described from oriental region and the 10th species from India.
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