Xylosandrus arquatus

Xyleborus arquatus
Scientific classification
Kingdom:	Animalia
Phylum:	Arthropoda
Class:	Insecta
Order:	Coleoptera
Suborder:	Phytophaga
Superfamily:	Curculionoidea
Family:	Curculionidae
Genus:	Xylosandrus
Species:	X. exiguus
Binomial name
	Xylosandrus arquatus; (Sampson, 1912)
Synonyms
	Xyleborus arquatus Sampson, 1912;

Xylosandrus arquatus, is a species of weevil endemic to Sri Lanka.^[1]^[2]

Description

Body length of the female ranges from 2.3 to 2.5 mm. Pronotum light brown and distinctly lighter than elytra. Elytra black in color. Antennae and legs are light brown. Antennae consists with 5 funicular segments and obliquely truncate club. Pronotal vestiture of semi-appressed and hairy setae. Pronotal base covered with a dense patch of short and erect setae. This patch indicates the presence of pronotal-mesonotal mycangium. Pronotal disc is moderately granulate. Pronotum is with lateral non-carinate costa. Protibiae, mesotibiae and metatibiae with 8 each socketed teeth. Distal striae is punctate whereas elytral interstriae is uniseriately punctate. Elytral disc gradually curving into declivity which is convex and with six striae.^[3]

Mainly a seedling borer, the host plants of the species include, Cinnamomum zeylanicum, Symplocos loha and Neolitsea cassia.^[3]^[4]

References

^ "HISL - PEET Scolytinae". xyleborini.speciesfile.org. Retrieved 2021-09-05.
^ Speyer, Edward R. (February 1923). "Notes upon the Habits of Ceylonese Ambrosia-beetles". Bulletin of Entomological Research. 14: 11–23. doi:10.1017/S0007485300028169. Retrieved 2021-09-05.
^ ^a ^b "Phylogenetic revision of Xylosandrus Reitter (Coleoptera: Curculionidae: Scolytinae: Xyleborina)". Proceedings of the California Academy of Sciences Volume: 61 :451-545. Retrieved 2021-09-05.
^ Jayasinghe, G. G.; Rajapakse, R. H. S.; Kumara, K. L. Wasantha; Ratnasekera, D.; Adikaram, N. K. B. (2020). "Pests and Diseases of Cinnamon (Cinnamomum zeylanicum Blume)". In Senaratne, Ranjith; Pathirana, Ranjith (eds.). Cinnamon. Springer International Publishing. pp. 201–232. doi:10.1007/978-3-030-54426-3_8. ISBN 978-3-030-54425-6. S2CID 235092145. Retrieved 2021-09-05.

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[1] "HISL - PEET Scolytinae". xyleborini.speciesfile.org. Retrieved 2021-09-05.

[2] Speyer, Edward R. (February 1923). "Notes upon the Habits of Ceylonese Ambrosia-beetles". Bulletin of Entomological Research. 14: 11–23. doi:10.1017/S0007485300028169. Retrieved 2021-09-05.

[Xylosandrus-3] "Phylogenetic revision of Xylosandrus Reitter (Coleoptera: Curculionidae: Scolytinae: Xyleborina)". Proceedings of the California Academy of Sciences Volume: 61 :451-545. Retrieved 2021-09-05.

[4] Jayasinghe, G. G.; Rajapakse, R. H. S.; Kumara, K. L. Wasantha; Ratnasekera, D.; Adikaram, N. K. B. (2020). "Pests and Diseases of Cinnamon (Cinnamomum zeylanicum Blume)". In Senaratne, Ranjith; Pathirana, Ranjith (eds.). Cinnamon. Springer International Publishing. pp. 201–232. doi:10.1007/978-3-030-54426-3_8. ISBN 978-3-030-54425-6. S2CID 235092145. Retrieved 2021-09-05.

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