Arixyleborus mediosectus explained

Arixyleborus mediosectus, is a species of weevil found in India, Sri Lanka, Cambodia, Myanmar, Philippines, Malaysia, Indonesia: Sumatra and Vietnam.^{[1] [2] [3] [4]}

Description

Body is about 2.1 mm long. Body long and cylindrical. Pronotum blackish brown. Elytra, legs and antennae are light brown. Head globose with moderately convex frons. Surface of the head is reticulate with sparse punctures and fine hairs. Eyes are elongate, and deeply emarginate. Antenna with 5 segmental funicle, short scape and obliquely truncate club. Pronotum elongate with substriaght basal margin and sides. Posterior portion of pronotum finely reticulate with sparse minute punctures. Scutellum is sub-round and small. Elytra broad as pronotum and with a substraight basal margin. Nearly half of elytra is smooth, flat and dull. Elytral striae marked by moderately large and very shallow punctures. Elytral interstriae covered with sparse hair-like setae. Elytral declivity is with plano-convex declivital face. Declivity is distinctly carinate and distinctly raised with prominent tubercles.^[5]

Biology

A polyphagous species, it is commonly found in many Dipterocarpus species.^[6]

Host plants

• Artocarpus chaplasa
• Balanocarpus heimii
• Canarium euphyllum
• Dendrocalamus strictus
• Terminalia bialata
• Dipterocarpus pilosus
• Dipterocarpus turbinatus
• Dipterocarpus zeylanicus

Notes and References

1. Web site: SE Asian Ambrosia Beetle ID: Fact sheet . 2021-09-06 . idtools.org.
2. Web site: Beaver . R. A. . Sittichaya . W. . Liu . L-Y. . 2014-10-21 . Arixyleborus mediosectus . 2021-09-06.
3. Wood . Stephen L. . Nomenclatural Changes and New Species of Scolytidae (Coleoptera), Part Iv . 1989 . The Great Basin Naturalist . 49 . 2 . 167–185. 10.5962/bhl.part.22642 . 41712501 . free .
4. Book: Maeto . Kaoru . Fukuyama . Kenji . Pasoh . 2003 . Okuda . Toshinori . Manokaran . N. . Matsumoto . Yoosuke . Niiyama . Kaoru . Thomas . Sean C. . Ashton . Peter S. . Vertical Stratification of Ambrosia Beetle Assemblage in a Lowland Rain Forest at Pasoh, Peninsular Malaysia . http://link.springer.com/10.1007/978-4-431-67008-7_24 . 2021-09-06 . Springer Japan . 325–336 . en . 10.1007/978-4-431-67008-7_24. 978-4-431-67010-0 .
5. Web site: INDIAN SPECIES OF THE GENUS ARIXYLEBORUS HOPKINS (seOL YTIDAE : COLEOPTERA) . 2021-09-05 . Bull. zool. Surv. India, 8 (1-3): 1-12, 1987.
6. Web site: Bark and Ambrosia Beetles of, Arixyleborus mediosectus (Eggers 1923) . 2021-09-06 . www.barkbeetles.info.