Nose Bot Fly of Horses vs Snow Fly
Side-by-side species comparison
| Attribute | Nose Bot Fly of Horses | Snow Fly |
|---|---|---|
| Scientific Name | Gasterophilus haemorrhoidalis | Chionea araneoides |
| Order | Diptera | Diptera |
| Family | Oestridae | Limoniidae |
| Size | 10-14 mm | 5-8 mm |
| Habitat | Farmland | Mountains |
| Diet | Omnivores | Detritivores |
| Regions | Europe, North America, Asia, North Africa | Europe, Asia, North America |
| Conservation | Least Concern | Least Concern |
Nose Bot Fly of Horses
A dark-bodied bot fly that deposits reddish-black eggs around the lips of horses. Larvae penetrate the lip mucosa and migrate to the stomach, then before pupation they reattach to the rectal mucosa, causing irritation and inflammation. The name refers to the reddish rectal inflammation it causes.
Did You Know?
Before pupation, larvae reattach to the horse's rectum, causing such irritation that affected horses may rub their tails raw.
Snow Fly
A wingless crane fly that walks on snow surfaces in winter to find mates.
Did You Know?
Its antifreeze proteins allow activity at temperatures well below freezing.