Brachyopini

Williston, 1885

Chrysogastrini

Tribe Guides

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Brachyopini is a tribe of hoverflies (Diptera: Syrphidae) in the Eristalinae. The tribe contains approximately 20 divided into two subtribes: Brachyopina and Spheginina. Members are generally darker and less colorful than many other hoverflies, though some genera such as Chrysogaster exhibit metallic luster. The tribe has been recorded across Europe including the Iberian Peninsula and Ukraine, with new continuing to be described.

Neoascia tenur by (c) janet graham, some rights reserved (CC BY). Used under a CC-BY license.Brachyopa daeckei by (c) Annika Lindqvist, some rights reserved (CC BY), uploaded by Annika Lindqvist. Used under a CC-BY license.Brachyopa vacua by (c) Katja Schulz, some rights reserved (CC BY), uploaded by Katja Schulz. Used under a CC-BY license.

Pronunciation

How to pronounce Brachyopini: /ˌbrækiˈɒpɪnaɪ/

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Identification

Brachyopini can be distinguished from other hoverfly tribes by their generally darker, less colorful coloration compared to the often bright yellow-and-black patterns seen in many Syrphidae. Some within the tribe, particularly Chrysogaster, display metallic blue or green luster. The tribe comprises two subtribes: Brachyopina (including Brachyopa, Chrysogaster, Orthonevra, and related genera) and Spheginina (including Sphegina, Neoascia, and related genera).

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Habitat

Members of this tribe occupy two primary types. such as Brachyopa are associated with sap runs on trees, where larvae develop. Other genera inhabit boggy or wetland areas where larvae are semiaquatic.

Distribution

The tribe has been documented across Europe including the Iberian Peninsula (Spain), Ukraine, Norway, and Germany. Specific locality records include Jaén (Sierra de Cazorla), Alicante (Alcoy, Font Roja), Granada (Sierra Nevada), and Valencia (Chelva) in Spain.

Diet

Larvae feed on decaying organic matter. In Brachyopa, larvae consume decaying sap. In bog-dwelling , larvae feed on decaying organic matter in semiaquatic conditions.

Ecological Role

are . The tribe contributes to services including pollination, consistent with broader hoverfly characteristics.

Similar Taxa

  • other Syrphidae tribesBrachyopini differs from most other hoverfly tribes in its generally darker, less colorful appearance rather than the typical yellow-and-black mimicry patterns.

More Details

Taxonomic subdivisions

The tribe is divided into two subtribes: Brachyopina (Brachyopa, Cacoceria, Chromocheilosia, Chrysogaster, Chrysosyrphus, Cyphipelta, Hammerschmidtia, Hemilampra, Lejogaster, Lepidomyia, Liochrysogaster, Melanogaster, Myolepta, Orthonevra, Riponnensia) and Spheginina (Austroascia, Chamaesphegina, Neoascia, Sphegina).

Recent taxonomic work

A 2022 revision of five Brachyopini from the Iberian Peninsula described two new (Melanogaster baetica and Orthonevra arcana), reinstated Chrysogaster coerulea as valid, and provided the first Iberian record of Chrysogaster rondanii.

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Sources and further reading