Black weevil
| Black weevil | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Black weevil ( Otiorhynchus coecus ) |
||||||||||||
| Systematics | ||||||||||||
|
||||||||||||
| Scientific name | ||||||||||||
| Otiorhynchus coecus | ||||||||||||
| Germar , 1824 |
The black weevil ( Otiorhynchus coecus ), often referred to as the large black weevil , is a beetle from the family of the weevils (Curculionidae).
features
Black weevils grow to be about an inch long. The body is colored black, the legs contrasting in a reddish color. The body is oval in shape and elongated in length. The front of the head is clearly elongated to a rather broad trunk. The thorax is narrower than the wing covers, on which a large number of longitudinal rows of dots can be clearly seen. They are slightly pointed towards the end of the body. The antennae have an unusually long shaft so that there is a kink in the middle of each antennae.
Subspecies
- Otiorhynchus coecus coecus
- Otiorhynchus coecus mequignoni
Taxonomy
The following synonyms are used in the literature :
- Otiorhynchus angustatus Stierlin , 1861
- Curculio ater autumn , 1795
- Otiorhynchus haematopus Boheman , 1843
- Otiorhynchus montanus Boheman , 1843
- Curculio multipunctatus Olivier , 1807
- Curculio niger Fabricius , 1775
- Curculio perlatus Richter , 1820
- Otiorhynchus rugipennis Boheman , 1843
- Otiorhynchus scrobiculatus Gyllenhal , 1834
- Otiorhynchus villisopunctatus Gyllenhal , 1834
Occurrence
The beetles are mainly found in the low mountain ranges and in the Alps up to the tree line. They inhabit spruce forests.
Way of life
The diurnal animals mostly crawl around on the ground or on spruce trees . They feed on the needles and shoots of the spruce, but do not cause any significant damage in forestry . The beetles do not have any wings and are therefore unable to fly. After mating, the female lays the eggs on the ground. The larvae are reminiscent of grubs and feed on the roots of the conifers. They can cause major damage, especially in tree nurseries . After several moults, the larva pupates in the ground. In the summer the finished beetle hatches.
Individual evidence
- ↑ Otiorhynchus (Otiorhynchus) coecus coecus Germar 1824. Fauna Europaea, Version 1.3, April 19, 2007 , accessed on October 22, 2007 .
- ↑ Otiorhynchus (Otiorhynchus) coecus mequignoni Hoffmann 1938. Fauna Europaea, Version 1.3, April 19, 2007 , accessed on October 22, 2007 .
- ↑ Otiorhynchus (Otiorhynchus) coecus Germar 1824. Fauna Europaea, Version 1.3, April 19, 2007 , accessed on October 22, 2007 .
literature
- Fritz Schwerdtfeger : The forest diseases. Textbook of forest pathology and forest protection . 4th revised edition. Parey, Hamburg et al. 1981, ISBN 3-490-09116-7 .
- Wolfgang Schwenke (Hrsg.) Among others: The forest pests of Europe. A manual in 5 volumes. Volume 2: Beetles . Parey, Hamburg and Berlin 1974, ISBN 3-490-11016-1
