Sightings – Flies

Observer: Faith Berkland

Observation Date: 6/20/14

Observation Time: 10:30 a.m.

Observation Location: On one of the reflectors I have around my driveway.

Common Name: Brown Mantidfly

Scientific Name: Clineriella Brunnea

Comments: I first thought it was a praying mantis but none of the pictures showed one that small, or with the wasp-like abdomen. I decided to see if it was a type of wasp and voila! See this photo.

More Information: Wikipedia

Observer: Paul Lauenstein

Observation Date: 3/17/11

Observation Time: 3:10 p.m.

Observation Location: vernal pool near Bay Road

Common Name: Caddisfly Larva

Scientific Name: Order Trichoptera

Comments: Caddisfly larva are aquatic. They build a protective case of silk around themselves, incorporating debris for camouflage and protection. Their presence is indicative of good water quality. Adult caddis flies emerge en masse for just a few weeks. After emergence, they do not eat, but they mate and the females lay eggs. Caddisflies are a preferred food of trout.

More Information:

Caddis Fly Larva


Observer: Paul Lauenstein

Observation Date: 5/26/10

Observation Time: 5:20 p.m.

Observation Location: Gavins Pond

Common Name: Crane Fly

Scientific Name: various

Comments: These insects look scary but they don’t bite.

More Information: Wikipedia

Crane Fly

Observer: Paul Lauenstein

Observation Date: 7/13/13

Observation Time: 12:05 p.m.

Observation Location: Soccer parking area by Gavins Pond

Common Name: Dronefly

Scientific Name: Eristalis tenax

Comments: This fly looks like a drone honeybee—hence the name.

More Information: TrekNature


Observer: Paul Lauenstein

Observation Date: 5/23/18

Observation Time: 8:50 a.m.

Observation Location: Moose Hill Farm (TTOR)

Common Name: Flower Fly

Scientific Name: Helophilus fasciatus

Comments: Flower Flies (also known as “hover flies” because of their tendency to hover in mid-air for long periods), are especially interesting insects.  They are overlooked by nearly everybody but farmers, who recognize them as one of the most important groups of insects beneficial to humans.  They’re not only important pollinators, but they dispose of crop pests as carnivorous larvae. There are 15 genera in all, and hundreds of species.

More Information: NatureSearch

Observer: Paul Lauenstein

Observation Date: 7/18/15

Observation Time: 5:10 p.m.

Observation Location: Gavins Pond Dam

Common Name: Robber fly (male)

Scientific Name: Efferia apicalis

Comments: Robber flies of the genus Efferia are small to large-sized robber flies (10–40 mm) with a distinctly different shape of the posterior end of the abdomen in males versus females. Females have a short or long ovipositor that is hairless and short conical to slender wedge-shaped, its color is usually glossy black. Males (such as the one pictured below) have a “helicopter tail” with glossy black claspers that are covered in hairs, forming part of a complex genital structure (the combined epandrium and hypandrium) that is clearly larger than the abdominal segments and is oriented diagonally to vertically upwards relative to the main body axis.

As is typical for robber flies, adult Efferia are ambush predators, taking off from a resting position on the ground or on a branch to intercept other flying insects in mid-air.

More Information: Wikipedia

Observer: Paul Lauenstein

Observation Date: 7/7/18

Observation Time: 1:45 p.m.

Observation Location: Moose Hill Farm (TTOR)

Common Name: Thick-headed Fly

Scientific Name: Physocephala tibialis

Comments: This family of flies is a parasite of solitary bees, and sometimes wasps.  The female grabs the host while in flight and forces an egg between the bee’s abdominal segments.

More Information: NatureSearch