Mydas fulvifrons
Illiger, 1801
Mydas fulvifrons is a of mydas ( ), a group of large, -mimicking flies related to . The Mydas contains some of the largest flies in North America. Like other mydas flies, are presumed to be nectar feeders, while are believed to be of woodboring larvae. The specific epithet 'fulvifrons' refers to the tawny or yellowish-brown frontal region of the .
Pronunciation
How to pronounce Mydas fulvifrons: //ˈmaɪ.dəs fʊlˈvɪ.frɒnz//
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Identification
Mydas fulvifrons can be distinguished from similar large black-and-orange by its elongate clubbed ( have short antennae), and from other Mydas by the tawny or yellowish-brown coloration of the frontal region. The species is similar in general appearance to Mydas clavatus, which has red/orange on the second abdominal rather than the head.
Images
Habitat
Associated with woodlands and areas where larval (woodboring ) occur. have been observed visiting flowers in dry post oak woodland.
Distribution
North America. Specific range details are limited, but the Mydas occurs across eastern and central North America.
Seasonality
active in summer; one observation records an individual in mid-July.
Host Associations
- Woodboring beetle larvae - larval Based on known of ; are believed to be of woodboring larvae in dead wood.
- Eryngium yuccifolium (rattlesnake master) - nectar sourceA related , Mydas tibialis, was observed visiting this plant; M. fulvifrons likely has similar feeding habits.
Life Cycle
develop as in dead wood, feeding on woodboring larvae. emerge and feed on nectar. occurs within the wood or soil.
Behavior
are and visit flowers for nectar. They are mimics, presumably gaining protection from through resemblance to stinging wasps. Adults are generally wary and difficult to approach closely.
Ecological Role
act as of woodboring , potentially regulating of these beetles in dead wood. may contribute to pollination while feeding on nectar.
Human Relevance
Generally harmless to humans; the may cause unnecessary alarm. No economic importance documented. Of interest to entomologists due to large size and mimicry.
Similar Taxa
- Mydas clavatusSimilar large black mydas with orange/red markings, but M. clavatus has the colored marking on the second abdominal rather than the .
- Mydas tibialisAnother large eastern Mydas with golden legs; distinguished by leg coloration and specific marking patterns.
- Robber flies (Asilidae), particularly Promachus and other large generaSimilar large size and predatory habits, but have short and are active of other insects rather than nectar feeders.
- Spider wasps (Pompilidae), particularly Anoplius speciesSimilar black-and-orange -mimic appearance, but wasps have a constricted waist and two pairs of ( have one pair plus ).
- Scoliid wasps such as Scolia dubiaSimilar size and coloration with black body and orange markings, but have different structure and waist constriction.
More Details
Taxonomic note
The specific epithet 'fulvifrons' (Illiger, 1801) refers to the tawny or yellowish-brown frontal region of the , distinguishing this from with markings on other body parts.
Biology
The of is poorly known compared to their relatives the (). Most knowledge of larval habits comes from limited rearing records and extrapolation from better-known such as Mydas clavatus.