ABSTRACT
Seiraboneti Denis, 1948, comb. nov. is examined and redescribed based on syntypes and by a newly discovered Chinese population. Lectotype and paralectotypes were designated, and the type locality of the species has been fixed to Câuda, near Nhatrang, Vietnam. The species was first described in the genus Lepidocyrtinus, but based on morphological and molecular evidence it is here transferred to Seira. For the phylogenetic placement of Seiraboneticomb. nov., its mitogenome was included in a dataset comprising 19 species of Seirinae. Maximum Likelihood and Bayesian inferences clustered the species next to Seirasanloemensis Godeiro & Cipola, 2020 from Cambodia, forming a distinct Seira clade from the Old World, confirming the hypothesis of the existence of a different basal lineage of Seirinae in Southern Asia.
ABSTRACT
Arthropods are known to harbor several endosymbionts, such as Cardinium, Rickettsia, Spiroplasma, and Wolbachia. Wolbachia, for example, are the most widespread known endosymbionts in the world, which are found in about half of all arthropod species. To increase their transmission, these endosymbionts must manipulate their hosts in several ways such as cytoplasmic incompatibility and male killing. In tropical regions, endosymbiont diversity has not been studied exhaustively. Here, we checked four endosymbionts, including Cardinium, Rickettsia, Spiroplasma, and Wolbachia, in eleven Drosophila species found in Thai Peninsula. The Wolbachia strain wRi-like was found in all populations of Drosophila ananassae and Drosophila simulans. Furthermore, we found two new strains, wMalA and wMalB, in two populations of Drosophila malerkotliana. Besides Wolbachia, we did not find any of the above endosymbionts in all fly species. This work reveals the hidden diversity of endosymbionts in Drosophila and is the first exhaustive study on Drosophila in the region.
Subject(s)
Rickettsia , Spiroplasma , Wolbachia , Animals , Male , Drosophila , Incidence , Thailand , Symbiosis , BacteroidetesABSTRACT
Thailand holds one of the most diverse faunas of the genus Coecobrya Yosii, 1956, with 22 species reported from the country so far. In this study three new species of Coecobrya are described from subterranean environments: C. satasookae sp. nov. from Chaiyaphum province, C. cavicola sp. nov. from Phrae province and C. chompon sp. nov. from Ratchaburi province. The first two species belong to the tenebricosa-group, as they lack eyes, while C. chompon sp. nov. has 1+1 eyes and fits the boneti-group. Coecobrya satasookae sp. nov. and C. cavicola sp. nov. can be distinguished from each other and its congeners by the combination of antennal length, clypeal, dorsal head and thoracic chaetotaxy, whereas C. chompon sp. nov. is most similar to C. boneti (Denis, 1948) from Vietnam. However, it differs from the latter taxa mostly by the proportion of the antennae, ventral and dorsal head, thoracic, fourth abdominal chaetotaxy, plus the shape of the tenent hairs. C. chompon sp. nov. is the first record and description of a Coecobrya species from the boneti-group in Thailand. We also discuss the ecological niches of troglomorphic Coecobrya species in Thailand and the status of the boneti-group.