Morphological and genetic revision of cytoform `L' of the Simulium (Simulium) tani complex from Taiwan, and cytoform `D' of the S. (S.) suzukii complex (Diptera: Simuliidae) from the Nansei Islands, Japan
Document Type
Article
Publication Date
12-1-2021
Abstract
The species status of two cytoforms of two species complexes in the Simulium (Simulium) tuberosum species-group, which are almost indistinguishable in the pupal stage, was morphologically and genetically evaluated. Cytoform `L' of the S. (S.) tani Takaoka & Davies complex, previously recognized as S. (S.) suzukii Rubtsov in Taiwan, is described as a new species, S. (S.) jianshiense. It is morphologically distinguishable as adults from two members of the S. (S.) suzukii complex: cytoform `C' from Hokkaido, selected to represent the type of S. (S.) suzukii sensu stricto, and cytoform `D' from Okinawa Island and, based on our chromosomal analysis, also from Amami Island. This new species is genetically separated from both cytoforms of the S. (S.) suzukii complex with a genetic distance of 5.31-6.67%. Cytoform `D' is distinguished from cytoform `C' by the color of the male forecoxa and relative length of the female sensory vesicle to the third maxillary palpomere. Accordingly, the name S. (S.) ryukyuense Ogata, once regarded as a synonym of S. (S.) suzukii, is revalidated and applied to cytoform `D'. The genetic distance between S. (S.) ryukyuense and S. (S.) suzukii sensu stricto is 1.24-1.60%.
Keywords
Simuliidae, Simulium, Taxonomy, Biodiversity
Divisions
tidrec
Funders
Ministry of Higher Education, Malaysia, under the Higher Institution Centre of Excellence (HICoE) niche area vector and vector-borne diseases [MO002-2019]
Publication Title
Acta Tropica
Volume
224
Publisher
Elsevier
Publisher Location
RADARWEG 29, 1043 NX AMSTERDAM, NETHERLANDS