Pine heart moth - Dioryctria sylvestrella

Japanese: マツノシンマダラメイガ(松心斑螟蛾) - マツノシンマダラメイガ（英語表記）Dioryctria sylvestrella

An insect of the family Pyralidae in the order Lepidoptera. Wingspan is 2.5-3cm. The wings are long and slender, with the forewings black-brown. Between the silvery-white subbasal line and the inner transverse line, there is a reddish-brown band, with a pattern of the same color on the transverse veins, and the submarginal line is serrated with a strong protrusion in the center. The hind wings are white except for the edges. They are distributed throughout Japan, as well as from the Korean Peninsula through Siberia to Europe. The larvae are major pests of pines such as red pine, black pine, and todo fir, and occur twice a year in the mountains of Honshu and Hokkaido, and two to three times a year in warm regions. They mainly feed on new shoots, but they can also penetrate into the trunks and feed on the cambium, causing a large amount of sap to flow out.

Source: Heibonsha World Encyclopedia, 2nd Edition Information

Japanese:

鱗翅目メイガ科の昆虫。翅の開張2.5～3cm。翅は細長く，前翅は黒褐色。銀白色の亜基線と内横線の間は帯状に赤褐色，横脈上に同じ色の紋があり，亜外縁線は鋸歯状，中央で強く突起する。後翅は周辺部を除き白色。日本全国のほか朝鮮半島からシベリアを経てヨーロッパに分布する。幼虫はアカマツ，クロマツ，トドマツなどマツ類の大害虫で，本州の山地や北海道では年2回，温暖地では年2～3回発生する。おもに新梢（しんしよう）に食入し，加害するが，幹に潜入して形成層を食害することがあり，この場合は大量の樹液が流出する。

出典　株式会社平凡社世界大百科事典第２版について　情報

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