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Molecular phylogeny and new insight into the stomatal complexity of Fictor platypapillata sp. n. (Diplogastridae: Nematoda) associated with Oniticellus cinctus (Coleoptera: Scarabaeidae)

Published online by Cambridge University Press:  24 February 2022

M. Mahboob
Affiliation:
Nematode Research Laboratory, Department of Zoology, Aligarh Muslim University, Aligarh202002, India
Q. Tahseen*
Affiliation:
Nematode Research Laboratory, Department of Zoology, Aligarh Muslim University, Aligarh202002, India
*
Author for correspondence: Q. Tahseen, E-mail: qtahseen@gmail.com

Abstract

The new species Fictor platypapillata was isolated from dung beetle Oniticellus cinctus (Scarabaeidae), collected from the district Balrampur, Uttar Pradesh, India. Fictor platypapillata sp. n. is described based on morphology, morphometric and molecular characterization, supplemented with scanning electron microscopy observations. The new species is characterized by two female morphs based on stomatal dimorphism: α morph with left subventral wall having 14 denticles, six low conical and eight elongated finger-like, slender denticles separated by a deep groove; inner wall of gymnostom with linearly arranged warts; β morph with inner wall of gymnostom lacking warts; dorsal and right subventral stegostomal walls having large, slender teeth with hook-shaped apical end. Genital sensilla eight pairs with v5 pair flattened, button-shaped, located ventrally. The phylogenetic analyses revealed significant congruence, especially in the position of the subordinate taxa of genus Fictor that shows polyphyly by both Bayesian inference and minimum evolution methods. The taxonomy of the genus is updated with a valid species list along with their geographical mapping.

Type
Research Paper
Copyright
Copyright © The Author(s), 2022. Published by Cambridge University Press

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