No Comments Sign in to comment. With black-and-yellow markings, the Hornet robberfly looks like its namesake, but is harmless to us. Robber fly, (family Asilidae), also called assassin fly, any of about 6,750 species of predatory insects, worldwide in distribution, in the fly order, Diptera. Please enter your username or e-mail address. Most are dull in colour, and their stout, often hairy, bodies resemble those of bumble bees. Promachus hinei. Spotted on Aug 19, 2013 Submitted on Aug 21, 2013, National Geographic's Great Nature Project, Texas Master Naturalist Program - Nature Indentification. Females are larger than males. You will receive a new password via e-mail. For that reason, Robber Flies are efficient predators, and they have a big appetite for bugs. Your email address will not be published. The Asilidae are the robber fly family, also called assassin flies. Species ID Suggestions Sign in to suggest organism ID. The long legs are adapted to capture prey in flight and to hold it while eating. Reply. What is this? Is it common to find the Giant Robber Fly in Missouri? Giant Robber Fly. Omissions? just wanted to say this website answered my question. Notify me of followup comments via e-mail. Aphids, Scale Insects, Leafhoppers, and Tree Hoppers, Fungus Beetles and Pleasing Fungus Beetles, Pantry Beetles, Grain Weevils, Spider Beetles, Meal Worms and Carpet Beetles, Crickets, Camel Crickets and Mole Crickets, Sow Bugs, Pill Bugs, Isopods, Lawn Shrimp and Amphipods, Hummingbird Moths, Sphinx Moths or Hawk Moths, Pantry Moths, Clothes Moths, Case-Bearers and Meal Moths, Neuropterans: Lacewings, Antlions, and Owlflies, What's That Bug? This is a large robber fly which is approximately 3/4 - 1 1 /2 inches in length. I found a dead one in my truck. Robber fly, (family Asilidae), any of about 6,750 species of predatory insects, worldwide in distribution, in the fly order, Diptera. Your email address will not be published. Common Name: Robber Flies General Category: Predator Taxonomic Classification: Diptera: Asilidae Scientific Name: Many species Description Because of their large size and loud buzz when flying, these generalist predators are often confused with horse flies and other biting flies. Test what you know about bugs with this quiz. What's That Bug? Robber Fly, any of a family of medium to large predatory flies known for their fast flight, ... Robber flies are highly variable in size and body shape, ranging from 0.5 to 5.0 cm (0.2 to 2.0 in) in length. The wings are clear and brown, and do not reach the end of the abdomen when the fly is at rest. This is one of the Giant Robber Flies in the genus Promachus. A few species of the genus Promachus are serious pests of apiaries because they feed on bees. The name "robber flies" reflects their notoriously aggressive predatory habits; they feed mainly on other insects and they largely wait in ambush and catch their prey in flight. Between the large-faceted eyes is a moustache of bristles. Corrections? Robber flies range in length to almost 8 cm (3 inches), making them the largest of all flies. We believe it is a Giant Robber Fly in … Females are larger than males. I ran across this insect while hiking in the hills around Boulder, CO. It’s about the size of my insect finger, and it flies as well. Location: Boulder, CO — Rocky Mountain foothills Which beetle is also known as the tumblebug and can eat its weight in 24 hours? Giant Robber Fly. You can also subscribe without commenting. Tweet; Description: Large robber flies with tiger-stripe pattern on abdomen. Thanks! I recently photographed that same Giant Robber Fly in Pasadena, Texas on a bayou. Nature School For Teachers - Fall 2020 Launch! It’s about the size of my insect finger, and it flies as well. Otherwise, the picture should give you all the details you need. I recently photographed that same Giant Robber Fly in Pasadena, Texas on a bayou. Most are dull in colour, and their stout, often hairy, bodies resemble Otherwise, the picture should give you all the details you need. Giant Robber Fly. Good to know what it really is because I’ve seen them in my garden a few times recently. It’s really ominous looking. By signing up for this email, you are agreeing to news, offers, and information from Encyclopaedia Britannica. The species that are pictured on BugGuide all look quite similar and we do not feel confident taking the identification to the species level. June 30, 2011 10:38 pm Let us know if you have suggestions to improve this article (requires login). This fly has black eyes, a light colored "beard" on the face and a brown thorax. Encyclopaedia Britannica's editors oversee subject areas in which they have extensive knowledge, whether from years of experience gained by working on that content or via study for an advanced degree.... Diversity among the dipterans: (from left to right, top) crane fly, horse bot fly, big-headed fly, moth fly, robber fly, (bottom) louse fly, bee fly, horse fly, gall midge, mosquito. Thanks! This mimicry helps to protect it from predators while it perches in the open, waiting for its own prey. Signature: IngridM. Required fields are marked *. Now I feel terrible, there was one in my bathroom and I killed it, it sounds like a good bug – I was thinking it was a horsefly and it would bite me while I was showering. Updates? The legs are reddish-brown and hairy. We don’t know how commonly they are sighted. After aerial chase, the large, buzzing Robber Fly overtakes its victim. It often hangs from branches or objects near the ground, waiting to ambush passing prey. They are powerfully built, bristly flies with short, sharp, stout sucking mouthparts. Habitat: In the sand at the edge of Lake Lewisville. This page details the Robber Fly - L. grossa including size, ... but the face, thorax, upper legs, and upper abdomen all have yellow hairs. will not do your child's homework, Fanmail: WTB? The robber fly is a predator of almost all flying insects. does not endorse extermination. , horse flies, robber flies, bee flies), and Cyclorrhapha (e.g., flies that breed in vegetable or animal material, both living and dead).…. Announcing our NEW encyclopedia for Kids! Dear Chris, This is a predatory Robber Fly, and you were astute to observe that it has a single pair of wings. Based on BugGuide data, there are Giant Robber Flies in Missouri. It injects a fluid into its victims that breaks down the muscle tissue. benefits youngster with Autism, Eighth Recipient of the Nasty Reader Award: Pink Inchworm. Hi IngridM, The long, cylindrical abdomen is cream colored with thick, black cross-bands. During the day, it is possible to see a Robber Fly sitting on a fence, handrail, or garden box. Signature: IngridM. The abdomen has a black tip. Each species has a characteristic habitat—e.g., tree trunk, foliage, grass, low plant, dead twig, gravel, or beach sand. Promachus hinei. Tweet; Description: This is a large robber fly which is approximately 3/4 - 1 1 /2 inches in length. Spotted by gatorfellows. Robber flies range in length to almost 8 cm (3 inches), making them the largest of all flies. This fly has black eyes, a light colored "beard" on the face and a brown thorax. It’s really ominous looking. Which of these insects includes a “slave-maker” that bites the head off the resident queen? Be on the lookout for your Britannica newsletter to get trusted stories delivered right to your inbox. Our editors will review what you’ve submitted and determine whether to revise the article. This article was most recently revised and updated by, https://www.britannica.com/animal/robber-fly, University of Kentucky Department of Entomology - Robber Flies, Texas A&M AgriLife Extension - Robber Fly, Midwest Institute for Biological Control - Robber Fly. A global citizen science platform to discover, share and identify wildlife.