dcsimg

分布

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分佈於熱帶非洲及東方區,為菌食小蠹的一種。
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臺灣生命大百科(TaiEOL)

描述

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截翅小蠹的雄性終身棲息於寄主木質部的巢內,由於終身不離開巢穴,因此很少見。體型僅為雌性的一半,翅鞘無截面。 雌性:體長2.9-3.3mm,長度為寬度的1.2-1.4倍。體呈黃棕色至棕色,翅鞘末端及截面呈深棕色。前胸背板呈圓形。翅鞘長度為寬度的1.2倍,為前胸背板長度的1.2倍。翅鞘至截面處突地陡直。
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生物學

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雌蟲會從原生巢中攜帶食用之真菌孢子至新巢中種植,幼蟲及成蟲皆以真菌孢子為食。雌蟲在親代巢內羽化後,與同胞兄弟交配後離巢,尋找建立新巢地點,並將卵產於新潮內壁上,之後以自身堵住巢穴入口,阻止掠食天敵侵入巢內。
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Xylosandrus mancus

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Xylosandrus mancus, is a species of weevil found in Afrotropical and Oriental regions.[1][2]

Distribution

It is native to Madagascar, Mauritania, Seychelles, Tanzania, China, India, Sri Lanka, Indonesia, Japan, Malaysian Peninsula, Philippines, Taiwan, Thailand and Vietnam.[3][4]

Description

Body length of the female ranges from 2.9 to 3.3 mm. Body yellowish brown to brown. Elytra dark brown at apex and declivity. Antennae and legs are yellowish brown. Antennea with 5 funicular segments and obliquely truncate club. Pronotal vestiture is semi-appressed and with hairy setae. Pronotal base covered with a dense patch of short erect setae that resemble a pronotal-mesonotal mycangium. Pronotal disc is moderately punctate. Pronotum consists with lateral costa and not carinate. Protibiae with 5 socketed teeth, whereas mesotibiae with 11 and metatibiae with 12 socketed teeth. In elytra, discal striae and interstriae multiseriate are punctate. Declivital elytral face is steep and abruptly separated from disc. Margin of the elytral declivity with a carina or sometimes forms a rim of granules that extends beyond the seventh interstriae by making a circumdeclivital ring.[3]

A polyphagous species, it is found in many plants.[3]

Host plants

References

  1. ^ "SE Asian Ambrosia Beetle ID: Fact sheet". idtools.org. Retrieved 2021-09-06.
  2. ^ "Occurrence of the introduced Xylosandrus germanus (Blandford, 1894) in Hungary - a genetic evidence (Coleoptera: Scolytidae)" (PDF). FOLI A ENTOMOLOGIC A HUNGARIC A ROVARTAN I KÖZLEMÉNYE K Volume 68 2007 pp. 97-104. Retrieved 2021-09-05.
  3. ^ a b c "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. ^ Beaver, R. A.; Sittichaya, W.; Liu, L-Y. (2014-10-21). "Xylosandrus mancus". Retrieved 2021-09-06.
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Xylosandrus mancus: Brief Summary

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Xylosandrus mancus, is a species of weevil found in Afrotropical and Oriental regions.

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