Sirex juvencus
From Wikipedia, the free encyclopedia
| Sirex juvencus | |
|---|---|
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Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | Insecta |
| Order: | Hymenoptera |
| Family: | Siricidae |
| Genus: | Sirex |
| Species: | S. juvencus |
| Binomial name | |
| Sirex juvencus | |
| Synonyms | |
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Ichneumon juvencus Linnaeus, 1758 | |
Sirex juvencus is a species of horntail found in Europe, Siberia, Sakhalin Island, Japan, the Philippines, Algeria and several other countries. Its common name is steely-blue wood wasp because of its color.
Male adults are about 8–28 millimetres (0.3–1.1 in) long, and female adults are about 15–32 mm (0.6–1.3 in)long. The antennae are red and brown or red and black. They exhibit sexual dimorphism, which means the male and female are morphologically different. The female body has a metallic bluish-black colour with yellowish or reddish legs, and the last part of the abdomen is triangular and wide at the base. The ovipositor, which deposits the eggs, is as long as the abdomen or a little longer. The eggs are white and elongated, and the larvae are cylindrical, white, and can measure up to 40 mm (1.6 in). The male body has a metallic black body, with the first two sets of legs being reddish and the back legs being black. The abdomen is black with bluish-black dots on some parts of the abdomen and brownish dots on other parts.