Pterallastes thoracicus

Loew, 1863

goldenback fly, Orangeback syrphid fly

Pterallastes thoracicus is a syrphid fly commonly known as the goldenback fly or orangeback syrphid fly. It is an uncommon observed across central and eastern United States, with recent records expanding its known range into Canada. are associated with flowers, where they feed on nectar and pollen. The larvae of this species remain unknown.

Pterallastes thoracicus by (c) skitterbug, some rights reserved (CC BY), uploaded by skitterbug. Used under a CC-BY license.

Pterallastes thoracicus by (c) Theo Rickert, some rights reserved (CC BY), uploaded by Theo Rickert. Used under a CC-BY license.

Pterallastes thoracicus by (c) Katja Schulz, some rights reserved (CC BY), uploaded by Katja Schulz. Used under a CC-BY license.

Pronunciation

How to pronounce Pterallastes thoracicus: /tɛˌɹæˈlæsˌtiːz θoʊˈræːsɪkəs/

These audio files are automatically generated. While they are not always 100% accurate, they are a good starting point.

Images

Distribution

Central and eastern United States; recently recorded in Canada with two new records and one previously overlooked historical record. Additional iNaturalist observations have further expanded the known distribution within the United States.