Posts

Winter stonefly

6335 We’ve found these guys in the house and crawling on the side of the house but are having trouble getting rid of them. From Peterorough, Ontario

Number 6335 This is a small winter stonefly (Plecoptera: Capniidae); these are harmless and there is no need for control. Their nymphs are found beneath rocks and gravel on the bottom of streams and rivers where they feed on plant material there; the adults feed on blue-green algae.

Mature larva or puparium of a rodent bot fly

6308 Found this in my basement on a wooden shelf in Ottawa, end of August, what the heck is it? From Stittsville, ON

Number 6308 This is a mature larva or puparium of a rodent bot fly (Diptera: Oestridae; Cuterebra spp.). The larvae of these flies develop under the skin of their host, breathing through a hole they make in the skin. When ready to pupate, they enlarge the hole and emerge, then seek a sheltered place to undergo pupation and transform into the adult fly. Click here for more detailed information.

louse fly

6304 Is this a larval tick? If not, what is it? From Sooke, BC

Number 6304 This is a louse fly (Diptera: Hippoboscidae); see Click here for an example. These are obligate blood feeders, but humans are not their natural hosts.

Male fishfly

6287. From Lion’s Head, Ontario 

Number 6287 This is a male fishfly (Megaloptera: Corydalidae; subfamily Chauliodinae); it might be a summer fishfly, Chauliodes pectinicornis Click here for an image.

Snipe Fly

6268 . Seemed to like being around the vegetable garden in 20+ degree weather. July. From Langley, BC

Number 6268 is a snipe fly (Diptera: Rhagionidae); it looks like Rhagio tringarius , known as the marsh snipe fly, Click here for an image. Their larvae are predators on insects and earthworms they find in or on the soil.

Black Soldier Fly

6247 Central Alabama, 06/16/18, on our way to another hot day. Found flying around kitchen previous night and again this AM. From Chandalar Circle Pelham United States

Number 6247 – This appears to be a black soldier fly, Hermetia illucens (Diptera: Stratiomyidae). They are harmless, and their larvae are scavengers on decomposing organic matter. Click here for more detailed information.

Mayfly

6234 This weird looking flying Critter friend was chilling on my front screen door I’ve seen them before but have no clue what it is I’m guessing maybe something in the dragonfly family? From Dunnville, Ontario

Number 6234 – This is a mayfly (order Ephemeroptera); possibly in the genus Hexagenia. Mayflies spend the vast majority of their lives as immatures (nymphs/naiads) at the bottoms of streams, ponds, or lakes where they form an important part of the freshwater food web. The adults do not feed, and live only long enough (sometimes less than a day) to find mates and lay eggs.

Elm Sawfly

6225 My daycare children found this guy crawling in my lawn. Thankfully, nobody touched it. I caught it in a zip-lock bag & his teeth punctured numerous holes through it. At first, I thought a bald-faced hornet. However, the coloring is off. Just not quite sure what type of wasp/hornet it could be. From Kronau, Saskatchewan

Number 6225 – This is an elm sawfly, Cimbex americana (Hymenoptera: Cimbicidae). They lack a sting and are completely harmless; see Click here for more detailed information.

The Biggest Pest Threats for Restaurants This Spring

Flies, cockroaches and ants are three of the dirtiest pests restaurants should be concerned about that shouldn’t be part of your diners’ experience.

Caddisflies

6222 Waterloo Ontario. Hundreds of these outside and under deck and on front porch, anywhere high around entire house. But congregate on window screens and walls. They fly is like a meal moth but are very quick and difficult to kill. Go into any crevices and brickwork and can make themselves very narrow. Also like it underneath and in between my outdoor furniture cushions, where I also find webbing. They mate and then I find yellow silk web with hundreds of tiny pale-yellow eggs. Webbing is mainly on underside of windows and up high along walls and underside of fascia. But have also found eggs in between cushions and on underside of furniture. Started about second week of May for the past several years. When I go outside they fly in my hair and anywhere else. How do I eradicate this? It seems to last for 2-3 months. It’s ruining my outdoor enjoyment!

Number 6222 – These are caddisflies (order Trichoptera), related to butterflies and moths. Their larvae are aquatic where they constitute a very important part of the food web there. The adults are harmless, but some species can be nuisance pests when they occur in large numbers, see Click here. They would not be responsible for the webbing and eggs that you mentioned.

Saw Fly Larva

6220 What is this and is it harmful to my flowerbeds grass. There are a whole bunch of them between mine and my neighbors house. From Leduc, Alberta.

Number 6220 – This is a larva of a sawfly, it might be a grass sawfly in the genus Pachynematus (Hymenoptera: Tenthredinidae)Click here for an image. They are unlikely to cause significant damage; Click here for more detailed information.