Sericomyia militaris
Walker, 1849
Narrow-banded Pond Fly
Sericomyia militaris, commonly called the narrow-banded pond , is a North fly () found across northern regions of the continent. range from 11.7–17.1 mm in length and are primarily black with narrow abdominal markings. The belongs to a whose are known as rat-tailed , possessing a distinctive breathing .
Pronunciation
How to pronounce Sericomyia militaris: /ˌsɛrɪˈkoʊmiə mɪˈlɪtərɪs/
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Identification
Distinguished from similar by the narrow abdominal on an otherwise black body. Differs from the related Sericomyia silentis (yellow-barred peat ), which has broader yellow markings. The specific epithet 'militaris' references the narrow, uniform banding pattern reminiscent of military insignia. are identifiable by their in bog mat pools combined with the long breathing characteristic of the .
Images
Appearance
measure 11.7–17.1 mm in length. Body predominantly black with narrow markings on the . As a member of the tribe Sericomyiini, the exhibits the characteristic rat-tailed larval form: an elongated, soft-bodied with leg-like knobs along the body and a long, extensible breathing tube () formed from .
Habitat
develop in bog mat pools, a specific aquatic within peatland . are associated with flower-rich including grasslands, road verges, and greenspaces where wildflowers provide nectar and pollen resources.
Distribution
Northern North America. Documented from Vermont and other northern United States locations, with broader distribution across northern regions of the continent.
Diet
feed on nectar and pollen from flowers. filter bacteria and other microbes from matter in aquatic environments.
Life Cycle
laid in bog mat pools. are aquatic, breathing through an extensible while filter-feeding on detritus. Upon maturity, larvae leave water to pupate on dry land in a hard, capsule-like . emerge as flying, flower-visiting .
Behavior
hover near flowers to access nectar and pollen. remain submerged, extending their breathing to the water surface to maintain continuous air supply while feeding below.
Ecological Role
function as , visiting wildflowers and contributing to . contribute to in bog through their filter-feeding activity on matter.
Human Relevance
provide services in natural and semi-natural . may be encountered in water gardens and container water features, where they sometimes prompt questions about management alongside mosquito control measures.
Similar Taxa
- Sericomyia silentisBoth share black-and- coloration and bog-dwelling , but S. silentis has broader yellow abdominal bars versus the narrow of S. militaris.
- Eristalis tenax are both rat-tailed with long breathing , but E. tenax larvae inhabit putrid, -rich standing water in urban and rural settings rather than bog mat pools; are larger and mimic .
More Details
Taxonomic Note
The is sometimes cited as 'Sericomyia militaria' in older sources, but 'militaris' is the accepted spelling per Walker, 1849.