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| Petroleum fly ： ウィキペディア英語版 |
Helaeomyia petrolei
The petroleum fly, ''Helaeomyia petrolei'', is a species of fly from California, USA. The larvae feed on dead insects and other arthropods that become trapped in naturally occurring petroleum pools, making this the only known insect species that develops in crude oil, a substance which is normally highly toxic to insects.
==Description==
Adults are about 5 mm long, with black bodies, except for lighter cheeks. The halteres are yellowish, with white knobs. The densely hairy eyes are nearest at the middle of the face. The third joint of the antennae is slightly longer than the second, the spine of the latter not reaching beyond the apex of the antennae. The hyaline wings are tinged with gray on nearly the entire costal half, except sometimes having a spot toward the apex of the submarginal cell. The apex of the second vein is nearly twice as far from the first as from the apex of the third vein.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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