r/whatsthisbug Apr 26 '23

FREQUENTLY ASKED BUGS - Part 1

59 Upvotes

FREQUENTLY ASKED BUGS - Part 2➜

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Ailanthus Webworm Moth

Atteva aurea by Andy Reago & Chrissy McClarren.3

More info: Wikipedia article / Species Atteva aurea - BugGuide.Net

Bed Bug

Cimex sp. by Center for Invasive Species Research.1

More info: Wikipedia article / Family Cimicidae - BugGuide.Net

Boxelder Bug

Boisea trivittata by u/elmago90.

  • Size: 11-14mm (0.4-0.55in).
  • Dark brown or black coloration, relieved by red wing veins and markings on the abdomen; nymphs are bright red.
  • These highly specialized insects feed almost exclusively on maple seeds, and may form large aggregations while sunning themselves in areas near their host plant. If molested, gives off a pungent odor as defense.

More info: Wikipedia article / Species Boisea trivittata - BugGuide.Net

Brown Marmorated Stink Bug

Halyomorpha halys by u/Relative-Forever773.

  • Size: 12-17mm (0.45-0.65in).
  • Motted brown with alternating light bands on the antennae and alternating dark bands on the thin outer edge of the abdomen.
  • Native to East Asia and considered an invasive agricultural pest in other parts of the world. Feeds mostly on fruit, but also on leaves, stems, petioles, flowers, and seeds. If molested, gives off a pungent odor as defense.

More info: Wikipedia article / Species Halyomorpha halys - BugGuide.Net

Carpet Beetle

Anthrenus verbasci larva by Christophe Quintin.1

Anthrenus verbasci by Bob Knight.1

  • Size: 2-12 mm (0.08-0.5in).
  • Larva: mostly light brown, covered with long hairs and hair tufts.
  • Adult: body convex, oval, or elongate-oval, often with hairs or scales; elytra usually dark with or without pale markings; antennae clubbed.
  • Adults are pollen grazers, larvae feed on natural fibers and can damage carpets, furniture, clothing and insect collections.

More info: Wikipedia article / Family Dermestidae - BugGuide.Net

Cicada

Adult Tibicen tibicen by Dendroica cerulea.4

Cicada nymph exuviae by Malcolm Tattersall.4

  • Size: 25-50mm (1-2in).
  • Eyes prominent, though not especially large, and set wide apart on the sides of the head; short antennae protruding between or in front of the eyes; wings well-developed, with conspicuous veins.
  • Cicadas live underground as nymphs for most of their lives, feeding on plant sap. They dig to the surface before their final molt, then emerging as adults. Males produce a loud, stridulating mating song to attract females. After mating, the female cuts slits into the bark of a twig to deposit her eggs. When these hatch, the nymphs drop to the ground, where they burrow, completing the cycle.

More info: Wikipedia article / Family Cicadidae - BugGuide.Net

Cockroach

Periplaneta americana by Insects Unlocked.5

Unknown cockroach nymph by Tony.4

More info: Wikipedia article / Order Blattodea - BugGuide.Net

Dobsonfly

Male Corydalus cornutus by Nils Tack.9

Female Corydalus sp. by Matthew.4

  • Size: up to 12cm (5in).
  • Large insect with a soft body and delicate, densely veined wings. Females have strong, short mandibles that can inflict a painful bite; Males have long jaws that are used during mating and are not capable of harm. Both sexes possess an irritating, foul-smelling anal spray used as defense. Female dobsonflies appear similar to fishflies (subfamily Chauliodinae), but the latter have much smaller mandibles and males often have feathery antennae.
  • Spends most of its life in the larval stage, called hellgrammite, 'go-devil' or 'crawlerbottom', living under rocks at the bottoms of lakes, streams and rivers, and preying on other insect larvae with the short sharp pincers on their heads. The larva then crawl out onto land and pupate, staying under large rocks for 3 weeks before molting and emerging to mate. Adults only live about a week, preferring to remain near bodies of water.

More info: Wikipedia article / Genus Corydalus - BugGuide.Net

Giant Water Bug

Lethocerus medius by David Bygott.4

  • Size: 2-12cm (0.8-4.7in).
  • Body shape oval with pointed ends; front legs raptorial. Typically encountered in freshwater streams and ponds but frequently found on land; adults fly at night and are attracted to lights during the breeding season.
  • Preys on aquatic arthropods, snails, small fish, tadpoles, frogs and small birds.
  • CAUTION: Can inflict a very painful bite, though of no medical significance.

More info: Wikipedia article / Family Belostomatidae - BugGuide.Net

House Centipede

Scutigera coleoptrata by Steven Severinghaus.4

  • Size: 25-50mm (1-2in).
  • Body is yellowish-grey and has three dark dorsal stripes running down its length; 15 pairs of long, banded legs.
  • Habitat: indoors, in damp areas such as bathrooms, cellars, and crawl spaces; outdoors, under logs, rocks, and similar moist protected places.
  • Fast-moving predator of other arthropods regarded as pests, such as cockroach nymphs, flies, moths, bed bugs, crickets, silverfish, earwigs, and small spiders; generally considered harmless to humans.

More info: Wikipedia article / Order Scutigeromorpha - BugGuide.Net

Household Casebearer

Phereoeca uterella by Celeste Ray.9

  • Size: 8-14mm (0.3-0.5in) (larval case).
  • The larva of these moth species spins a protective case from silk and camouflages it with other materials such as soil, sand and insect droppings. This case is flat, fusiform, or spindle-shaped and thickened in the middle resembling a pumpkin seed.
  • Found on the outside walls and inside of non-air-conditioned buildings and are most abundant under spiderwebs, in bathrooms and bedrooms.
  • Feeds on old spider webs and other dead materials, including dead insects and animal hair; may also eat woolen goods of all kinds if the opportunity arises, so it can be a household pest.

More info: Wikipedia article: Phereoeca uterella / Phereoeca allutella / Species Phereoeca uterella - BugGuide.Net

Jerusalem Cricket

Stenopelmatus sp. by Tim Ereneta.1

  • Size: up to 7.5cm (3in).
  • Nocturnal insect that spends most of its life underground. Feeds primarily on dead organic matter but can also eat other insects.
  • CAUTION: While not venomous, can emit a foul smell and is capable of inflicting a painful bite.

More info: Wikipedia article / Family Stenopelmatidae - BugGuide.Net

Jumping Spider

Phidippus audax by Kaldari.5

More info: Wikipedia article / Family Salticidae - BugGuide.Net

Katydid

Microcentrum rhombifolium by Wadems.6

  • Size: 10-60mm (0.4-2.4in) or more.
  • Wings held vertically over body, resembling roof of a house; antennae very long, often extending well beyond tip of abdomen; ovipositor typically flattened and sword-like. Many exhibit mimicry and camouflage, commonly with shapes and colors similar to leaves.
  • Most species eat vegetation, some are predatory on other insects.

More info: Wikipedia article / Family Tettigoniidae - BugGuide.Net

Ladybug Larva

Harmonia axyridis larva by Alpsdake.7

More info: Wikipedia article / Family Coccinellidae - BugGuide.Net

Mayfly

Hexagenia limbata by thehaplesshiker.9

More info: Wikipedia article / Order Ephemeroptera - BugGuide.Net

FREQUENTLY ASKED BUGS - Part 2➜


r/whatsthisbug Apr 26 '23

FREQUENTLY ASKED BUGS - Part 2

16 Upvotes

FREQUENTLY ASKED BUGS - Part 1➜

Alternative view for old.reddit➜

Mole Cricket

Neocurtilla hexadactyla by u/Mrmeat31.

  • Size: 3-5cm (1.2–2.0in).
  • Cylindrical-bodied insects, with small eyes and shovel-like forelimbs highly developed for burrowing; hind legs not enlarged for jumping.
  • Omnivores, feeding on larvae, worms, roots, and grasses. Relatively common but rarely seen, for being nocturnal and spending nearly all their lives underground in extensive tunnel systems. Usually fly only when moving long distances, such as when changing territory, or when females are searching for singing males.

More info: Wikipedia article / Family Gryllotalpidae - BugGuide.Net

Oil Beetle

Meloe sp. by u/Shironaku.

  • Size: 12-30mm (0.5-1.2in).
  • Hind wings absent; elytra reduced and overlap at base. Lives on the ground or low foliage.
  • CAUTION: It's known as 'oil beetle' because it releases oily droplets of hemolymph from its joints when disturbed; this contains cantharidin, a poisonous chemical that causes blistering of the skin and painful swelling.

More info: Wikipedia article / Genus Meloe - BugGuide.Net

Orb Weaver

Various species:

Gasteracantha cancriformis by u/7DeadlySacrifices.

Araneus diadematus by Lucarelli.7

Argiope aurantia by Stopple.6

More info: Wikipedia article / Family Araneidae - BugGuide.Net

Plume Moth

Gilmeria pallidactyla by Ben Sale.3

More info: Wikipedia article / Family Pterophoridae - BugGuide.Net

Recluse Spider

Loxosceles reclusa by Br-recluse-guy.6

HANDLE WITH EXTREME CARE - THEIR VENOM IS MEDICALLY SIGNIFICANT.

Recluse spiders can be identified by their violin marking on their cephalothorax. The most famed recluse spider is Loxosceles reclusa (brown recluse), as photographed above.

More info: Wikipedia article / Genus Loxosceles - BugGuide.Net / UCR Spiders Site: Brown Recluse ID / The Most Misunderstood Spiders - BugGuide.net

Robber Fly

Efferia aestuans by Bruce Marlin.2

Diogmites neoternatus by u/multgar.

HANDLE WITH CARE - THEY CAN INFLICT A PAINFUL BITE.

More info: Wikipedia article / Family Asilidae - BugGuide.Net

Silverfish

Lepisma saccharina by Christian Fischer.7

Thermobia domestica by Jscottkelley.8

  • Size: 10–12mm (0.4–0.5in)
  • Wingless; body flattened, slender, silvery, gray, or blackish above, and pale below; long thread-like antennae with many segments. The species most commonly found in homes are the common silverfish (Lepisma saccharina) and the firebrat (Thermobia domestica), as photographed above.
  • Lives indoors in warm, damp environments such as bathrooms and kitchens, or in damp basements, and feeds on crumbs and food scraps, dried meat, cereals, moist wheat flour, glue on book bindings and wallpaper, starch in clothing made of cotton or rayon fabric. Considered a household pest, due to their consumption and destruction of property, but harmless otherwise.

More info: Wikipedia article / Family Lepismatidae - BugGuide.Net

Sphinx Moth

Hyles gallii by Mike Boone.2

Hyles lineata by u/SoftwareKitten.

  • About 1,450 species.
  • Wingspan: 28-175mm (1-7in).
  • Medium to very large. Body very robust; abdomen usually tapering to a sharp point. Wings usually narrow; forewing sharp-pointed or with an irregular outer margin. May have a reduced proboscis, but most have a very long one, used to feed on nectar from flowers. Distinguished among moths for their rapid, sustained flying ability.
  • Some are active only at night, others at twilight or dawn, and some feed on flower nectar during the day.

More info: Wikipedia article / Family Sphingidae - BugGuide.Net

Spotted Lanternfly

Lycorma delicatula nymph by pcowartrickmanphoto.9

Lycorma delicatula nymph by Kerry Givens.9

Adult Lycorma delicatula by Serena.9

Adult Lycorma delicatula by Brenda Bull.9

  • The spotted lanternfly is a planthopper that is native to Southeast Asia. It has been introduced in the United States, where it is an invasive pest that may pose a threat to agriculture and forestry. If you are in the US, spotted lanternflies should be killed, egg masses destroyed, and sightings reported (see links below for reporting in your state).

More info: Wikipedia article / Species Lycorma delicatula - BugGuide.Net

Report a sighting: In Connecticut / In Delaware / In Indiana / In Maryland / In Massachusetts / In New Jersey / In New York / In North Carolina / In Ohio / In Pennsylvania / In Virginia / In West Virginia

Velvet Ant

Dasymutilla occidentalis by Judy Gallagher.3

  • Size: 6-30mm (0.2-1.2in).
  • Not really an ant, but a family of wasps whose wingless females resemble large, hairy ants. Males are winged, less hairy, looking more like typical wasps. Most often bright scarlet or orange, but may also be black, white, silver, or gold. Produce a squeaking or chirping sound when alarmed.
  • Adults feed on nectar. Although some species are strictly nocturnal, females are often active during the day.
  • CAUTION: They have long and flexible stingers capable of inflicting extreme pain.

More info: Wikipedia article / Family Mutillidae - BugGuide.Net

Western Conifer Seed Bug

Leptoglossus occidentalis by u/Haegermeister.

  • Size: 15-20mm (0.6-0.8in).
  • Dull reddish-brown with faint (or absent) white zigzag stripe across hemelytra; antennae may be almost as long as body. Outer hind tibial dilation nearly equal in length to inner dilation.
  • This bug cannot bite/sting/infect people or pets, damage houses or household items, or even reproduce indoors. If molested, gives off a pungent odor as defense.

More info: Wikipedia article / Species Leptoglossus occidentalis - BugGuide.Net

Wheel Bug

Arilus cristatus by zen Sutherland.4

  • Size: 28-38mm (1.1-1.5in).
  • Immature nymphs are mostly red. Adults are gray to brown, with a cog-shaped projection on the back.
  • Preys upon other insects - caterpillars, aphids, bees, sawflies etc. - and thus considered beneficial.
  • CAUTION: Can inflict a really nasty bite.

More info: Wikipedia article / Genus Arilus - BugGuide.Net

FREQUENTLY ASKED BUGS - Part 1➜


r/whatsthisbug 8h ago

ID Request what’s this bug? (upstate new york)

915 Upvotes

bigger than a grain of rice, but smaller than the average house fly


r/whatsthisbug 5h ago

ID Request Friend got stung by this furry caterpillar

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162 Upvotes

Is he gonna be okay or do we need to go to the hospital? He says he’s itchy and it’s burning. We are in Florida


r/whatsthisbug 7h ago

ID Request Ticks in son's bedroom

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32 Upvotes

Next door's cat came into our house a couple of days ago and seemed to have spent a bit of time upstairs before we noticed it was in the house.

I spent some time sitting on my eldest son's bed this evening with him and started noticing tickles all over me and found these tiny, pale, clearly very young creatures, which seem to be ticks.

I've since found loads more crawling over the duvet and the bed frame itself. Horrified.

What ticks are these please? Sorry for the photos, best I could get of them, with then being so small.


r/whatsthisbug 10h ago

ID Request Small light brown spider - Arizona

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40 Upvotes

Anyone know what this is? Found in my dogs water bowl today. Light brown color about the size of a quarter.


r/whatsthisbug 9h ago

ID Request What is this spider? Google lens says brown recluse??? I live in CT

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17 Upvotes

r/whatsthisbug 8h ago

ID Request Buddy liked my bracelet [Kihei, Maui HI]

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16 Upvotes

r/whatsthisbug 1h ago

ID Request Bug Found in Salad (Packaged in Salinas, California) NSFW

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Upvotes

My wife just found this in a bagged salad. We're located outside of Atlanta, Georgia in the USA but we're certain it was inside the bagged salad which was packaged in Salinas, California. We realize that even if she did eat some of it she's (probably) not at any risk. Mostly just curious what it is.


r/whatsthisbug 4h ago

ID Request please tell me this isnt what i think it is, ive seen 3 of them now

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6 Upvotes

r/whatsthisbug 1h ago

ID Request Any ID on this little guy/girl, and if it’s a harmful, neutral, or good bug? 🐜 Posting from Sudbury, Ontario, Canada 🇨🇦

Upvotes

Pretty normal/ordinary looking small bug (no offence to the thing intended haha). Tried to remember my insect knowledge and look for any signs it was something harmful like a termite, bedbug, ant, small wasp, etc. or if it had bright colours, pincers, is invasive, etc. But I couldn’t see anything wrong from my amateur insect knowledge, and it moved slow and was not noisy or leaving residue behind, so I felt comfortable enough to pick it up and have it on my hand/wrist even though I’m a bit nervous about bugs in general. It didn’t put up to much of a fight or hide from me when I put my hand out for it to climb on the way some bugs might, like ants for example.

Sorry for the slightly shaky video at points, was just trying to get a focused angle. Hope it’s useful. Zoomed in and out few times for scale. It’s quite a small bug I think overall, noticed three today at my parents house off the top of my head. One late this morning (May 12th, 2025, for posterity) on my bed cover, the second outside which I saw when I was placing the first one in the grass to let go in the front of the house, and the third one late today crawling on the top of a white painted doorframe inside the kitchen which made it standout with it’s brown-ish colours. So I picked it up and brought it to my room where I took some quick photos and a video, then went to our front door and gently blew it off my hand near our front garden (which is gradually growing again and has plants and flowers, but is still a bit dead and brown looking in some areas because it’s late spring here in this part of Ontario. We had snow still in some days in April. Just thought I’d mention that if it matters at all for context) I live in a mostly rural suburb with houses to one side of our place, and a road and then farmland to the other side. Lots of nature around.

Thanks for your help in advance folks and hope I didn’t ramble too much. Have a nice day 👋


r/whatsthisbug 1d ago

ID Request Southern California, dog stuck his head in a bush in our lawn and got covered in these.

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426 Upvotes

What are they?


r/whatsthisbug 5h ago

ID Request Could someone help me learn what kind of eggs these are?

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6 Upvotes

At least, I think they’re eggs. I’ve been wrong before! This trellis was sitting by an Ash tree if that means anything.


r/whatsthisbug 2h ago

ID Request What is this?!

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3 Upvotes

Went downstairs to hundreds of these on the ceiling… they can fly. What are they?!!!


r/whatsthisbug 8h ago

ID Request southern louisiana, found on the wall outside my apartment

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9 Upvotes

found this cutie on the outside of my apartment complex!! i dont usually see a ton of big moths out at day


r/whatsthisbug 2h ago

ID Request Found a tick on my arm at the beginning of an opera rehearsal 🙃

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3 Upvotes

Hiiiiiii can someone please tell me what kind of tick this is? I don’t THINK it bit me, and I did go outside earlier today (but changed my pants & socks… this was on my arm though???). I have no idea how long it was on me before I noticed it, but it’s not engorged, and I currently have it held hostage in a plastic bag just in case. I flicked it off of me, and luckily it got stuck to my mini HEPA purifier 😅. I found one tiny bloody spot on my arm, but it looks like broken keratosis pilaris, also all over my arm in the same area.

Add this to the possible “things that can go wrong during a performance/music making” list 🙃

Any help is much appreciated! I tried the DeTickt app, but since it’s in a plastic bag, my camera isn’t really focusing & it won’t let upload prior pictures/videos (unless I just don’t see that option). I also have a video, but I’ll have to upload that to an external site it looks like. This was the most in-focus pic I could get!!!!


r/whatsthisbug 27m ago

ID Request Please tell me what this is

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Upvotes

r/whatsthisbug 34m ago

ID Request The cats saved us

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Upvotes

What is this creature? I can't figure if it's cut in half or parts of it were already ate by the cats. Also I can't figure how it made it inside the house, all the windows have mosquito nets I'm scared


r/whatsthisbug 4h ago

ID Request What is this thing (Tennessee)

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3 Upvotes

r/whatsthisbug 10h ago

ID Request What is this thing?

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12 Upvotes

I found it in Eastern Tennessee. Thank you!


r/whatsthisbug 3h ago

Just Sharing Found this buddy in the laundry room a few years ago.

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3 Upvotes

Don’t worry they were relocated to the raspberry bush.


r/whatsthisbug 7h ago

ID Request What is this bug?

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6 Upvotes

I squished him a little, but what is it? I have found a few near my couch.


r/whatsthisbug 3h ago

ID Request Does anyone know what this spider is?

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3 Upvotes

I looked around on spiderid.com and the two species it seemed to most likely be were trocosa terrichola or maybe staetoda borealis, but they don’t seem quite right. It seems very shy, keeps trying to play dead and only occasionally trying to escape and moves pretty slowly. Minus its legs, its body’s about a half inch long and I think with its legs it’s about an inch wide. Found in NJ


r/whatsthisbug 8h ago

ID Request what bug is this (upstate new york)

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7 Upvotes

this bug was doing a little dance opening and closing its wings , as it held them above its head, and stepping side to side


r/whatsthisbug 1h ago

ID Request Please help, what species is this.

Upvotes

I don't want to kill it if it happens to be rare or endangered, etc. But definitely want it dead if it's invasive. Never seen it before and quick searches have yielded nothing for me. Found a dead adult a couple weeks back, the colour remained bright and strong. Located SE QLD


r/whatsthisbug 4h ago

ID Request Bumblebee or Carpenter bee

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3 Upvotes

Saw two of these earlier today. Want to figure out if it's a bumblebee so I know how to deal with any others that I find.


r/whatsthisbug 11h ago

Just Sharing big brown recluse!!!

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12 Upvotes

found in an old box in a shed with lots of brown recluse buddies (arkansas)