Diptera
True flies carry a single pair of functional wings, with the hind pair reduced to club-like halteres that act as gyroscopes during flight. The order is enormous, ecologically diverse, and economically important. It includes pollinators, predators, parasites, decomposers, and the most consequential disease vectors in human history. Adult mouthparts vary from sponging to piercing-sucking, and larvae range from leaf miners to aquatic filter feeders to internal parasites.
Asilidae - Diogmites
Pin #41 · Diptera · Asilidae - Diogmites
IN: Tipton Co. · 23 Jul 2025 · 40.22, -86.07
Collector: A. Angel
Preservation: Pin through the right pleuron of the mesothorax, head 3/8" above body.
Characters: Robber-fly build; head hollowed between eyes; face bearded; long bristly legs.
Agromyzidae
Pin #39 · Diptera · Agromyzidae
Guatemala: Santa Catarina Barahona · 21 Mar 2026 · 14.55, -90.82
Collector: A. Angel
Preservation: Point mount this small specimen.
Characters: Tiny (1–5 mm) blackish/yellowish leaf-miner; Sc hard to view, incomplete or fused with R1.
Tachinidae - Zelia sp.
Pin #61 · Diptera · Tachinidae - Zelia sp.
Guatemala: Antigua Guatemala · 19 Mar 2026 · 14.56, -90.73
Collector: A. Angel
Preservation: Pin through the right pleuron of the mesothorax, head 3/8" above body.
Characters: Robust calyptrate fly; subscutellum bulges below scutellum; very large abdominal bristles; M vein bends sharply; large lower calypter.
Stratiomyidae - Sargus sp.
Pin #59 · Diptera · Stratiomyidae - Sargus sp.
Guatemala: Antigua Guatemala · 17 Mar 2026 · 14.56, -90.73
Collector: A. Angel
Preservation: Pin through the right pleuron of the mesothorax, head 3/8" above body.
Characters: Slender body; abdomen metallic green to coppery; eyes large, banded with horizontal blue-green stripes; antennae short and aristate.