r/whatsthisbug • u/aliceinanotherland • 15h ago
r/whatsthisbug • u/Tsssss • Apr 26 '23
FREQUENTLY ASKED BUGS - Part 1
FREQUENTLY ASKED BUGS - Part 2➜
Alternative view for old.reddit➜
Ailanthus Webworm Moth

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

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

- 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

- 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

- 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

- 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


- Size: most common species range 15-30mm (0.59-1.3in).
- Usually dark brown or reddish; flattened oval body and long swept-back antennae; head is usually concealed by the pronotum; when wings are present, they are held flat over the back, overlapping one another.
- Feeds on human and pet food, and can leave an offensive odor. Only 30 out of 4,500 cockroach species are known to invade homes. 4 are well known pests, Periplaneta americana (American cockroach), Blattella germanica (German cockroach), Blattella asahinae (Asian cockroach), and Blatta orientalis (Oriental cockroach).
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

- 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

- 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

- 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

- 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

- 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

More info: Wikipedia article / Order Ephemeroptera - BugGuide.Net
FREQUENTLY ASKED BUGS - Part 2➜
r/whatsthisbug • u/Tsssss • Apr 26 '23
FREQUENTLY ASKED BUGS - Part 2
FREQUENTLY ASKED BUGS - Part 1➜
Alternative view for old.reddit➜
Mole Cricket

- 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:



Argiope aurantia by Stopple.6
More info: Wikipedia article / Family Araneidae - BugGuide.Net
Plume Moth

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


HANDLE WITH CARE - THEY CAN INFLICT A PAINFUL BITE.
More info: Wikipedia article / Family Asilidae - BugGuide.Net
Silverfish


- 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

- 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

- 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

- 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

- 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 • u/qellokitty • 12h ago
ID Request What is this bug? Found in a river in Snoqualmie Valley, WA.
My bf thinks it's a crab!! Fingers for scale lol
r/whatsthisbug • u/Clvy80 • 7h ago
ID Request Nigeria, West Africa, large moth rescued.
A neighbor had killed a much larger one bearing eggs (this was very annoying and sad actually). Rescued this one in time and kept it nearby. It looked newly hatched as the edges of its wings were still slightly crinkled at the edges. Quite fascinating and beautiful. Can anyone tell what type of moth it is?
r/whatsthisbug • u/Boccololapideo • 1d ago
ID Request Bug's eggs or mushrooms?
Hello, we are in Northern Italy. Under a pile of stacked wood we found this bunch of... Well, we don't know.
They are really small. If you watch the up right corner of the photo you can see an ant.
Are they eggs? Are they some type of mushrooms?
Thank you all!
r/whatsthisbug • u/glutis_maximus • 16h ago
ID Request What is this bug? In New York State
r/whatsthisbug • u/rastroboy • 15h ago
ID Request WTF are these wasps and WTF kinda vertical gangbang threesome orgy is this?
r/whatsthisbug • u/Chigiriki • 6h ago
ID Request Hello, what bug is this? It was in my bathroom.
I live in Shanghai China if that helps narrow it down. Is this bug dangerous? I normally don’t mind some bugs in my place as long as they are chill.
r/whatsthisbug • u/Altruistic_Care_3838 • 9h ago
ID Request This guy on my dads bald head
This guy literally built a web on my dad lmao. Northern KY, USA. Who is this little guy!
r/whatsthisbug • u/Awkward-Necessary-24 • 5h ago
ID Request Just got sting by this. Should I be worried?
I think it is assassin bug.
r/whatsthisbug • u/mikkiz22 • 18h ago
ID Request Found while washing broccolini from my garden
Is it some sort of maggot?
r/whatsthisbug • u/didy9781 • 12m ago
ID Request Found a few of these at the bottom of my bed where my cats usually sleep, what are they?
After 4 days of vacation, during which my cats were left at home under the care of my parents (who visited multiple times a day) I found the sheets of my bed scattered with tiny black bits. Upon further inspection I saw that there were also these "worms", which are barely visible but very much alive. If I squish them with my finger they give a reddish liquid, which I assumed was blood. There were multiple reddish stains on the bed, so I assume there were more these past few days and progressively got squished. I took a few samples to the vet but he told me that this is not a cat parasite (like ticks, fleas etc.) but likely an insect that my cat caught while outside, but he couldn't tell... Cat is mostly indoor but gets out under our supervision a couple of times per week in our garden, but has never been outside during those 4 days. She likes to sit in a little patch that's basically just soil/dirt. For scale: on the right you can see a single cat hair, so this creature is very small, therefore this is the best quality I can get with my phone... Anybody recognises this insect? What should I do? Thanks!
r/whatsthisbug • u/yunggashh • 43m ago
ID Request What is this spider?
I didn’t want to get too close, sorry. Tried google image search and it came up with numerous id’s. SE Minnesota.
r/whatsthisbug • u/Opasnakrava • 2h ago
ID Request What’s this spider and is it dangerous?
It’s approximately half a centimetre in length. Found indoors in coastal Croatia.
r/whatsthisbug • u/cap10wow • 9h ago
ID Request Some kind of mantis getting freaky on my shorts just south of Wilmington, NC USA
Picked up my kid from work at a grocery store by the shore, then walked maybe 30 feet from my car to my desk and thought I collected some schmutz but when I brushed my shorts off I realized they were wings (I’m a little nearsighted). Who’s this and how cool is it?
r/whatsthisbug • u/msholc • 42m ago
ID Request Panicking..
Northern Indiana. Terrified of carpet beetles and bed bugs and totally psyching myself out. I noticed it against a baseboard at my parents house when I was dropping off the kids. I thought it was dead until its unusually long legs popped out and it started running. At first it reminded me of a tick because the long legs. It’s oddly flat, which then made me panic about bed bugs. And it is beetle-ish looking which made me worry about a different type of carpet beetle or something. Can anyone ID this 100%? Or at least rule the scary possibilities out 100%?
r/whatsthisbug • u/Shoefum • 9h ago
ID Request Tiny worm swimming in old humidifier
smaller than an inch worm what is going on here
r/whatsthisbug • u/lil_lakota • 4h ago
ID Request Dragonfly ID
I took this picture at UWT (Tacoma, WA) back in May of 2019. At the time, I didn't realize the head was out of focus. So, sorry for the picture quality!
Anyway, I know this is some type of dragonfly. But, I'm having trouble pinning down the exact species. Some Googling led me to believe it's a species of Meadowhawk or Darner. But, I don't know much about dragonflies to know if this is an accurate assumption. Any help in identifying this beauty would be much appreciated! ☺
r/whatsthisbug • u/Spiritual-Acadia-330 • 5h ago
ID Request What's this? Im about to take off on a flight from the UK. Stuck between the interior and exterior windows
r/whatsthisbug • u/East_Salamander_5869 • 1h ago
ID Request Hello ! What is this pile of dust from - termites, other bugs or mice. Old house in northern Italy, already has a few little mice living in it, and bugs galore.
Little black dots look like casings so me, can’t see anything else moving around near it and can’t hear anything. Just wondering if it’s safe to sleep next to ! Dust looks like either concrete or wood.
r/whatsthisbug • u/Spare-Debt-5716 • 2h ago
ID Request What are these bug? Getting "mystery" bites.
r/whatsthisbug • u/EliasJames • 8h ago
ID Request What is this huge flying bug in my room?
r/whatsthisbug • u/ketchup-pringles • 3h ago
ID Request what moth is this? (Belgium)
clear skies, around 11:30am and 22°C im suprised why hes still out during the day '
r/whatsthisbug • u/Possible-Risk7979 • 6h ago
ID Request Any idea what kind of insect this is? Mosquito perhaps? Found in an Amber necklace inherited from my Grandparents.
r/whatsthisbug • u/HgMercury080 • 15m ago
ID Request What’s this caterpillar?
It’s about 5 or so cm, found in Minnesota, it has an reddish brown head