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Aedes alboscutellatus

From Wikipedia, the free encyclopedia

Aedes alboscutellatus
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Diptera
Family: Culicidae
Genus: Aedes
Subgenus: Aedimorphus
Species:
A. alboscutellatus
Binomial name
Aedes alboscutellatus
(Theobald, 1908)
Synonyms
  • Aedes argentinotus Banks, 1909
  • Aedes omurensis Yamada, 1921

Aedes alboscutellatus is a species of mosquito belonging to the genus Aedes and subgenus Aedimorphus. It is part of the Aedes niveus subgroup and exhibits primarily zoophilic behavior, preferring to feed on animals, though it is also a common indoor human-biting mosquito in its range. Although its role in disease transmission remains poorly understood, it is not currently considered a major vector of human pathogens.

Description

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Aedes alboscutellatus is a medium-sized mosquito, with adults typically measuring 4–6 mm in length. Its body is predominantly black, adorned with distinctive white scales on the scutum (the dorsal portion of the thorax). The narrow scales on the scutum are dark bronze, creating a striking contrast. A key identifying feature is the sub-apical white band on all femurs (the third leg segment). The proboscis is mottled with light and dark scales, and the wings are covered in dark scales. Adults are commonly found in exposed or partially sunlit forests, often near temporary water-filled pools that form during rainy seasons. Larvae inhabit shallow pools, both natural (e.g., forest pools) and man-made (e.g., containers), and can be found indoors and outdoors, showcasing the species' adaptability.[1]

Distribution

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Aedes alboscutellatus is widely distributed across Asia and Oceania, occurring in the following countries:[2]

The species thrives in forested regions with temporary water bodies, which serve as its primary breeding sites.[2]

Behavior

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Aedes alboscutellatus is primarily zoophilic, favoring animal hosts over humans. However, it frequently bites humans indoors and is recognized as one of the most common indoor human-biting mosquitoes within its range. Its biting activity peaks at 20:00–22:00 and 04:00–06:00 hours, aligning with evening and early morning periods.[3] The species is strongly associated with forested environments, breeding in temporary pools formed during rainy seasons. These breeding sites may be natural or artificial, and the presence of larvae indoors and outdoors highlights its adaptability to human-modified habitats.

Medical significance

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There is currently limited evidence to suggest that A. alboscutellatus plays a significant role in transmitting human diseases. Unlike its relatives Aedes aegypti and Aedes albopictus, which are well-known vectors of arboviruses such as dengue, chikungunya, and Zika, this species is not recognized as a primary vector of human pathogens. Its zoophilic tendencies may reduce its interaction with humans as a disease vector. However, further research is required to determine its vector competence and potential public health impact.

References

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  1. ^ Webb, Cameron E.; Doggett, Stephen L.; Russell, Richard C. (February 2016). A Guide to Mosquitoes of Australia. CSIRO Publishing. ISBN 9780643104464. Retrieved 31 January 2017.
  2. ^ a b Maquart, Pierre-Olivier; Fontenille, Didier; Rahola, Nil; Yean, Sony; Boyer, Sébastien (2021). "Checklist of the mosquito fauna (Diptera, Culicidae) of Cambodia". Parasite. 28: 60. doi:10.1051/parasite/2021056. ISSN 1776-1042. Retrieved 31 January 2023.
  3. ^ "Feeding activities of forest breeding mosquitoes, particular reference to Aedes alboscutellatus [1981]". AGRIS: International Information System for the Agricultural Science and Technology. Retrieved 31 January 2017.