Ceriana
Rafinesque, 1815
Species Guides
4- Ceriana abbreviata(Northern Wasp Fly)
- Ceriana ancoralis(Black-sided Wasp Fly)
- Ceriana mime(Ivory-ringed Wasp Fly)
- Ceriana tridens(Western Wasp Fly)
Ceriana is a of hoverflies ( Syrphidae) in the Eristalinae. All are mimics, exhibiting coloration and body form that resembles yellowjackets and paper wasps. Members of this genus are that visit flowers and are characterized by their hovering . The genus was established by Rafinesque in 1815.
Pronunciation
How to pronounce Ceriana: /sɛˈriːə.nə/
These audio files are automatically generated. While they are not always 100% accurate, they are a good starting point.
Identification
Distinguished from actual (Hymenoptera) by having only two wings instead of four, and by the presence of aristate with knobbed tips. The sponging mouthparts differ from the chewing of wasps. Separated from other syrphid by the combination of wasp-mimic coloration, slender body form, and aristate antennae. Ceriana tridens specifically has been observed ovipositing in tree fissures.
Images
Appearance
have a slender -like body with yellow and black or brown banding. They possess a single pair of wings (characteristic of Diptera), with the hindwings reduced to small knob-like . A key diagnostic feature is the presence of a knob-like bristle () at the tip of each . The sponging mouthparts are visible upon close inspection. The overall body shape mimics that of vespid wasps, including a constricted waist appearance.
Distribution
Records exist from Denmark, Norway, Sweden, the United States (including Vermont), and California. Observations suggest presence in Mediterranean-type climates and temperate regions.
Diet
feed on nectar and pollen from flowers. Larvae of Ceriana tridens have been observed to feed on sap from trees after hatching.
Life Cycle
are deposited in fissures of trees. Larvae feed internally on tree sap. Specific details on and larval development stages are not documented in available sources.
Behavior
exhibit hovering , remaining stationary in the air before descending to flowers to forage. The -mimic coloration is believed to provide protection from that avoid stinging insects.
Ecological Role
function as . The mimicry complex suggests involvement in avoidance dynamics within .
Human Relevance
Photographed subjects in entomological competitions; serves as an example of in educational contexts. Picnickers and casual observers frequently mistake them for stinging , leading to avoidance or swatting .
Similar Taxa
- Vespula pensylvanica (Western yellowjacket)Similar yellow and black banded coloration and body shape, but distinguished by four wings, chewing mouthparts, and absence of aristate
- Polistes dominula (European paper wasp)Resembled in slender body form and coloration, but differs in wing number, structure, and mouthpart type
- Other Syrphidae generaMany hoverflies are mimics, but Ceriana is distinguished by its specific aristate and particular body proportions
Misconceptions
Frequently mistaken for stinging by the general public due to convergent coloration and . This misconception actually benefits the fly by reducing risk.
More Details
Mimicry type
: harmless fly gains protection by resembling harmful
Notable species
Ceriana tridens has been documented ovipositing in tree bark fissures and is a known mimic subject of photographic study