Helophilus seelandicus

Helophilus seelandicus, commonly known as the three-lined hoverfly, is a hoverfly endemic to New Zealand. The common name corresponds to the three black lines behind the insect's head.

Taxonomy
This species was first described by Johann Friedrich Gmelin in 1790 and named Musca seelandica. The taxonomy of this species was most recently discussed by F. Christian Thompson in 2008.

Description
The adult fly is approximately 15 mm in length.

Distribution
This species is endemic to New Zealand.

Life cycle
H. seelandicus maggots live in water with decaying vegetation, animals or dung.

Interaction with humans
Despite being native to New Zealand, this species is commonly reported to the Ministry of Primary Industries Pest and Disease Hotline.