Discovery of a new black fly species in the Simulium (Simulium) striatum species-group (Diptera: Simuliidae) from Northeastern Thailand and its phylogenetic relationships with seven Thai related species
Document Type
Article
Publication Date
2-1-2023
Abstract
The female, male, pupa and mature larva of Simulium (Simulium) poolpholi sp. nov. collected from a large and seasonal stream in northeastern Thailand are described. This new species is placed in the S. striatum species -group by the female sternite 8 concave posteromedially in form of the inverted-U shape, ovipositor valve with a ventrally produced process along its inner margin, male ventral plate saddle-shaped, style with a basal pro-tuberance, and pupal gill with 10 filaments. It is morphologically similar to S. (S.) phraense Takaoka, Srisuka & Saeung from northern Thailand by lacking annular ridges on the surface of pupal gill filaments but it is distin-guished from the latter species by the arrangement of pupal gill filaments. Molecular analysis using the fast-evolving nuclear big zinc finger (BZF) gene shows that S. (S.) poolpholi sp. nov. formed a distinct clade, being separated from the seven other Thai species of this species-group by a genetic distance of 1.84-4.55%. Our discovery increases the number of species in the S. striatum species-group in Thailand to nine.
Keywords
Aquatic insects, Biting fly, Fast-evolving nuclear big zinc finger (BZF), gene, Genetic analysis, Biodiversity
Divisions
tidrec
Funders
Ministry of Education, Malaysia, under the Higher Institution centre of Excellence (HICoE) niche area vector and vector -borne diseases
Publication Title
Acta Tropica
Volume
238
Publisher
Elsevier
Publisher Location
RADARWEG 29, 1043 NX AMSTERDAM, NETHERLANDS