Hadromyia aldrichi
(Shannon, 1916)
Aldrich's Quicksilver
Hadromyia aldrichi is a of hoverfly ( Syrphidae) native to North America. It is a relatively large syrphid, with a body length of 12–14 mm. The species is characterized by its robust build, brilliant bronze with golden pile, and sexually dimorphic features. It is known from Canada and the United States.
Pronunciation
How to pronounce Hadromyia aldrichi: /hæˈdroʊ.mi.ə ælˈdrɪ.kʰi/
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Identification
Very similar to Hadromyia opacus but more robust with obviously broader than high. Distinguished by brilliant bronze with more golden pile; compare to opacus which has different abdominal coloration and pile. Female depressed and dull aeneous black with distinctive reddish area above . Wing infuscation pattern also useful: darkest along anteriorly.
Images
Appearance
Large, robust hoverfly with body length 12–14 mm and wing length 11–12 mm. broader than high, distinctly robust. brilliant bronze with golden pile. Wings infuscated anteriorly, darkest along . Female: depressed, dull aeneous black with reddish tint above , dark brown pile, narrow whitish pollinose stripes along . sub-shining black with dark brown pile; mesopleurae with long golden pile; margin of scutellum and post-alar calli with yellow pile. Legs: fore dark on outer side, yellow on inner side; middle femora almost entirely yellow; hind femora yellow with dark band around middle; remaining leg segments yellow except last two tarsal joints dark. Male genitalia figured by Metcalf.
Distribution
Canada; United States.
Similar Taxa
- Hadromyia opacusVery similar in overall appearance; H. aldrichi distinguished by more robust build, broader , and brilliant bronze with golden pile versus opacus coloration.