Lutziella swatensis, Khan & Khan & Das & Rafiq & Anwar & Khan & Ullah & Khan & Alam, 2022

Khan, N. Un. Nisa W., Khan, A., Das, S. N., Rafiq, N., Anwar, K., Khan, B. T., Ullah, I., Khan, M. & Alam, A., 2022, Description of Lutziella swatensis sp. n. (Trematoda: Dicrocoelidae) from Rattus rattus in Swat, Pakistan, Brazilian Journal of Biology (e 225092) 82, pp. 1-3 : 2

Lutziella swatensis sp.nov. ( Figures 1-2 )

Type host: Rattus rattus (L. 1758), Rodentia : Muridae

Type locality: Rice fields, Swat, Pakistan

Site of infection: Liver

No. of specimens recovered: 10 from a single host

No. of hosts examined: 269

Prevalence of infection: 3.71%

Etymology: The specific name refers to the municipality of the type locality

3.1. Description (based on whole mounts of 10 specimens)

Body flat, smooth, longer than broad measuring 2.68-4.52 (3.08±0.61), maximum width at the level of the ovary 1.68-2.60 (2.09±0.31); Oral sucker with weak musculature measuring 0.12 - 0.32 (0.20±0.06) by 0.12- 0.28 (0.20±0.048); pharynx small measuring 0.08-0.16 (0.12±0.02) by 0.08 - 0.12 (0.11±0.01). Eosophagus long measuring 0.12-0.45 (0.28±0.1) by 0.075-0.15 (0.11±0.01). Caeca of irregular shape which bifurcate a little anterior of the ovary in to unequal portions. Acetabulum weakly muscular measuring 0.40-0.68 (0.53±0.01) by 0.33-0.45 (0.38±0.038). Testes lobed at the level of posterior margin of acetabulum, the left measuring 0.32 – 0.56 (0.43±0.07) by 0.24 - 0.40 (0.32±0.053) while the right measuring 0.44- 0.56 (0.49±0.03) by 0.20-0.41 (0.29±0.071). Cirrus pouch somewhat median, small in size containing winding seminal vesicle, prostatic complex and short ejaculatory duct. Genital pore median a little posterior to the pharynx. Ovary post testicular, submedian; measuring 0.24-0.32 (0.28±0.028) by 0.20 - 0.28 (0.24±0.029). Seminal receptacle overlapping ovary, laurer’s canal present.Vitellaria follicular extending on each side from almost the level of testes to anterior portion of posterior half of the body. Uterus filled with eggs occupying most of the body from the near posterior extremity to pre- testicular zone; eggs small, oval, numerous, brown in colour, measuring 0.034 -0.038 (0.019±0.003) by 0.015 -0.026 (0.03±0.001). Excretory vesicle tubular with terminal pore ( Figures 1-2 ).

Figures

Figure 1-2. Lutziella swatensis n.sp. holotype, Photomicrographs. (1) Lutziella swatensis entire specimen; (2) Embryonated eggs enlarged. Note: Entire specimens were measured in millimeter and the eggs were measured in micrometer.