A new species of Aplectana (Nematoda, Cosmocercidae) in Goniurosaurus bawanglingensis (Squamata, Eublepharidae), from Hainan Province, China

Abstract

Aplectana hainanensis sp. nov. (Ascaridida, Cosmocercidae) from the intestines of Goniurosaurus bawanglingensis (Squamata, Eublepharidae) is described and illustrated. Aplectana hainanensis sp. nov. represents the 52nd species assigned to the genus and the 5th species reported from the Sino-Japanese region. It is easily separated from the 4 species previously reported from the region by the distribution pattern of male caudal papillae: A. macintoshii has an irregular pattern; A. hylae has no precloacal papillae; A. fujianae has 1 pair of precloacal papillae; A paucipapillosa has 3 pairs of precloacal papillae; Aplectana hainanensis sp. nov. has 7 pairs of precloacal papillae.

Description of a new species of Aplectana (Nematoda: Ascaridomorpha: Cosmocercidae) using an integrative approach and preliminary phylogenetic study of Cosmocercidae and related taxa

“…The genus Aplectana (Cosmocercoidea: Cosmocercidae) is a group of zooparasitic nematodes, with approximately 50 nominal species mainly parasitic in various amphibians, and rarely occurring in reptiles worldwide [4,5,[20][21][22]. The absence of rosette papillae or plectanes in males and presence of somatic papillae, lateral alae and two prodelphic ovaries, uteri containing numerous eggs of normal size in females, allocate the present specimens to the genus Aplectana.…”

“…To date, only four species of Aplectana have been reported in China, namely A. hainanensis Bursey, Goldberg & Grismer, 2018, A. hylae Wang, 1980, A. macintoshii (Stewart, 1914 and A. paucipapillosa Wang, 1980 [22-24]. Lacking a gubernaculum, the new species can be easily distinguished from the four above-mentioned species (the four species all possessing a gubernaculum) [20,22,23].…”

“…In the genus Aplectana, A. akhrami (Islam, Farooq & Khanum, 1979), A. artigasi Puga & Torres, 1997, A. chilensis Lent & Freitas, 1948, A. crossodactyli Baker, 1980, A. crucifer Travassos, 1925, A. delirae (Fabio, 1971) Lent & Freitas, 1948, A. papillifera (Araujo, 1977), A. praeputialis (Skrjabin, 1916), A. tarija Ramallo, Bursey & Goldberg, 2007, and A. vercammeni Le Van Hoa, 1962, have no gubernaculum [20,22,[25][26][27][28][29][30][31][32][33][34][35] Currently, the specific diagnosis of Aplectana spp. remains based on morphology, and the genetic data of these parasites are severely limited.…”

Molecular phylogeny of the family Cosmocercidae (Nematoda: Ascaridida), with description of a new species of Aplectana using an integrative approach

“…The genus Aplectana (Cosmocercoidea: Cosmocercidae) is a group of zooparasitic nematodes, with approximately 50 nominal species mainly parasitic in various amphibians, and unfrequently occurring in reptiles worldwide [4,5,[20][21][22]. To date, only four species of Aplectana have been reported in China, namely A. hylae Wang, 1980, A. macintoshii (Stewart, 1914, A. hainanensis Bursey, Goldberg & Grismer, 2018 and A. paucipapillosa Wang, 1980 [22-24].…”

“…Moreover, A. xishuangbannaensis n. sp., lacking of gubernaculum, is different from all the abovementioned Chinese species of Aplectana (all possessing gubernaculum)[20,22,23].In the genus Aplectana, the following species have no gubernaculum, which are similar to the new species, including A. akhrami(Islam, Farooq & Khanum, 1979), A. artigasi Puga & Torres, 1997, A. chilensis Lent & Freitas, 1948, A. crossodactyli Baker, 1980, A. crucifer Travassos, 1925, A. delirae (Fabio, 1971), A. dubrajpuri Sou & Nandi, 2015, A. meridionalis Lent & Freitas, 1948, A. papillifera (Araujo, 1977), A. praeputialis (Skrjabin, 1916), A. tarija Ramallo, Bursey & Goldberg, 2007, A. vercammeni Le Van Hoa, 1962 and A. hoplobatrachusia Sou, Sow & Nandi, 2018 [20, 22, 25-35]. Aplectana xishuangbannaensis n. sp.…”