Einfeldia
Kieffer, 1924
non-biting midges
Species Guides
1Einfeldia is a of non-biting midges in the Chironominae, tribe Chironomini, within the bloodworm Chironomidae. The genus was established by Kieffer in 1924 and contains approximately 11 described distributed across Europe, North America, and other regions. At least one species, E. synchrona, has been studied in detail and exhibits with synchronized .
Pronunciation
How to pronounce Einfeldia: //aɪnˈfɛldiə//
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Habitat
Small, shallow, highly eutrophic freshwater ponds; larvae prefer central areas deeper than 40 cm (based on E. synchrona).
Distribution
Europe (including Denmark, Norway, Sweden); North America (Canada: Ottawa region); additional records from Australia, Guatemala, and India.
Seasonality
in May (based on E. synchrona in Canada); emergence synchronized and inhibited at short .
Life Cycle
; synchronized with slight protandry; first instar larvae lack tubules, are initially pelagic, then build cases before moulting; instars II-IV possess one pair of ventral tubules; developmental arrests occur in winter (with feeding cessation, mud penetration, and sealed cocoon construction) and summer; marked year-to-year variation in winter developmental stage reached (based on E. synchrona).
Behavior
Larvae show mobility in response to seasonal depth changes; exhibit synchronized patterns.
Ecological Role
Member of benthic bottom fauna in freshwater systems; can achieve high abundance (over 145,000 individuals emerging from a single small pond).
More Details
Taxonomic Note
Einfeldia was originally described by Kieffer in 1924. The is placed in tribe Chironomini, Chironominae. -level biological data are available primarily for E. synchrona; generalization to other species requires caution.
Research Limitations
Detailed information derives from a single study of E. synchrona in a Canadian pond. Data for other Einfeldia are sparse. The is not well-represented in public observation databases (11 iNaturalist observations as of source date).