Manure-breeding
Guides
Hydrotaea ignava
black garbage fly
Hydrotaea ignava is a muscid fly commonly known as the black garbage fly. It is native to Europe, with records from Portugal (including the Azores and Madeira), Denmark, and Norway. The species breeds in moist organic matter, particularly manure and decaying material in confined animal facilities. Its larvae are predatory on other fly larvae, including house fly maggots, and have been used in biological control programs. Adults are distinguished by their shiny bronze-black coloration and habit of remaining on food sources at night rather than dispersing to ceilings or vegetation.
Ornidia obesa
Green Jewel Fly
Ornidia obesa is a metallic green syrphid fly widely distributed across the Americas and introduced to the Old World. Adults are frequently observed in association with decomposing organic matter, particularly animal feces and compost. The species has been documented as a host for pteromalid parasitoids and is noted for harboring bacteria of public health significance.