False Powder Post Beetle

Xylopsocus capucinus (Fabricius)

Apate capucinus Fabricius, 1781.

Bostrichus eremita Olivier, 1790.

Enneadesmus nicobaricus Redtenbacher, 1867.

PREVIOUSLY RECORDED DISTRIBUTION.—Brazil, Venezuela, Surinam, Trinidad; Old World Tropics (Blackwelder, 1945, p. 400; Fisher, 1950, p. 141; Kalshoven, 1963, p. 238).

DOMINICAN DISTRIBUTION.—Clarke Hall, 5 July 1964, 21 August 1964, T. J. Spilman.

BIOLOGY.—I found adults of this species living in old wooden poles that form the structural skeleton of the roof of the Clarke Hall picnic pavilion on the shore of the Layou River; some poles were so severely eaten that they could be easily broken by hand. Fisher (1950, p. 141) and Beeson and Bhatia (1937, p. 305) listed many species of wood this beetle infests in the Old World Tropics, that it was found in the wood of the grape in Brazil, and gave notes on habits. The larva was described and illustrated by Gardner (1933, pp. 16, 17, pl. 4: figs. 55–56).

臺灣、越南、柬埔寨、緬甸、印尼、印度、斯里蘭卡、紐幾內亞、印度洋島群、馬達加斯加，晚近隨頻繁的國際貿易入侵非洲、南美、美國。

電纜斜坡長蠹蛀食多種果樹，包括荔枝、葡萄、紅毛丹、番石榴及榴槤等的樹幹及枝條。另外也有蛀食竹材、木薯、已死的樹薯枝條及鱷梨種子的記錄。其所造的危害多半為次級性傷害，主要侵害已被光害、低溫或其他害蟲傷害的木材或植物體。分佈於全世界的熱帶地區。

體長3-5.5mm，長度約為寬度的2.5倍，長圓筒狀。頭部呈黑褐色至黑色，翅鞘呈紅褐色，翅鞘截面轉為深褐至黑色。觸角九節，末端三節膨大，最末節呈卵圓形。前胸背板前半部密布小齒突，後半部密布小瘤狀顆粒。翅鞘基部前緣脊呈波浪狀，翅鞘截面平坦，側脊完整明顯，且上半部呈波浪狀。

電纜斜坡長蠹的生活史依序可分為卵、幼蟲、蛹、成蟲四個階段。成蟲主要在五月到十一月間出現，生活週期通常為一年，但有時會長達二至三年。

Xylopsocus capucinus is a species of horned powder-post beetle in the family Bostrichidae. It is found in Africa, Australia, North America, Oceania, South America, and Southern Asia.