background preloader

Artropodi e altri piccoli invertebrati

Facebook Twitter

ALIEN WORM SHOOTS GOOEY WEB / ЧЕРВЬ ПЛЮЕТ ЛИПКУЮ ПАУТИНУ / หนอนทะเล. Photos du journal - Natural Selection. ArtFido - fetching art. Photos du journal - Italia Unita per la Scienza. Peacock mantis. Ants Form Daisy-Chain To Haul Away Millipede. One of the craziest treehoppers I've... - Relax. I'm an Entomologist. Foto del diario - La civiltà planetaria. 8 Outrageously Weird Insects. Spiny Orb Weaver (Gasteracantha arcuata) Leafhopper – family Cicadellidae.

8 Outrageously Weird Insects

Horror movie bugs: new wasp species builds nest with the bodies of dead ants. Adult female of the new wasp species, the bone-house wasp.

Horror movie bugs: new wasp species builds nest with the bodies of dead ants

Photo courtesy of Staab et al. If ants made horror movies this is probably what it would look like: mounds of murdered ants sealed up in a cell. The villain of the piece—at least from the perspective of the ants—is a new species of spider wasp, which scientists have aptly dubbed the bone-house wasp (Deuteragenia ossarium) in a paper released today in PLOS ONE. But the reason it fills a nest chamber with dead ants is even more surprising: baby proofing. "Our discovery demonstrates in an impressive way, what fascinating strategies of offspring-protection have evolved in the animal kingdom," said lead author Michael Stabb with the University of Freiburg.

Here's how this works: spider wasps (in the family Pompilidae) build large nests usually constructed out of plant debris, soil, and resin. Lucanus cervus. Da Wikipedia, l'enciclopedia libera.

Lucanus cervus

Snail Consumes Worm With Incredible Efficiency. A couple weeks ago, we showed you a photo series from Ukrainian photographer Vyacheslav Mishchenko in which he explores the secret lives of snails.

Snail Consumes Worm With Incredible Efficiency

Snails seem like an underdog in the animal kingdom because they are incredibly slow, slimy, vulnerable little mollusks who eat fruits. Many snail species are herbivores who fit the bill of being totally adorable, but not all of them. Powelliphanta is a genus of carnivorous land snails, who are also known as amber snails. Video shows fire ants are capable of acting like a liquid and a solid. Aside from being one of the most annoying and infuriating creatures on the planet, fire ants can be pretty cool.

Video shows fire ants are capable of acting like a liquid and a solid

They have incredible strength and move very cohesively as a group, which has garnered recent attention from physicists. A group from the Georgia Institute of Technology put together a video presentation for last month’s American Physical Society meeting. Il ragno che si muove a salti. Sulla vista degli animali vi abbiamo detto tutto in uno speciale, corredato da multimedia in cui ci siamo messi nei loro panni e in cui vi abbiamo sfidato a riconoscere l’animale dal suo occhio.

Il ragno che si muove a salti

Così, giocando, abbiamo scoperto che i ragni in genere hanno 8 organuli fotorecettori proprio degli invertebrati, gli ocelli, che hanno una struttura più semplice di quella dell’occhio. Incapaci di percepire i colori, gli ocelli sono molto sensibili alle differenze di intensità della luce. Facebook. Scientists discover the animal kingdom’s first ‘female penis’ She simply also happens to sport a penis that she introduces in the male's vagina Contrary to popular belief, the presence or absence of certain sex organs isn't the determining factor when deciding which animal of a species is female and which is male.

Scientists discover the animal kingdom’s first ‘female penis’

In fact, biologists don't use sex chromosomes either. They actually rely on the size of an animal's gametes — sperm in males and oocytes in females. As the rule goes, females are the sex that contribute the largest gametes, whereas males are the sex that contribute the smallest gametes and therefore expend the least amount of energy on producing these cells. So, in this particular instance of sex-role reversal, the convention still applies: the female in these species of insect produces the largest gametes — egg cells. The neoglota's female penis (Current Biology / Yoshizawa et al.)

Mating lasts 40 to 70 hours thanks to the female's inflatable, spiny penis. L'animale più forte del mondo. Il salto meccanico di Issus coleoptratus. Facebook. Facebook. A gynandromorph cardinal: one half male, the other half female. Reader Brian Peer sends us a photo of a “gynandromorph” cardinal (Cardinalis cardinalis).

A gynandromorph cardinal: one half male, the other half female

A gynandromorph, as the name implies, is an animal that is part male and part female, with the sex-specific parts usually demarcated cleanly. Here’s Brian’s description of how he saw the bird: Your post this morning on Venus the Cat reminded me of a bilateral gynandromorph Northern Cardinal we found a couple years back in nearby Rock Island, IL. I’ve attached several photos of the bird. As you can see, the left side is male and the right female. And some photos: This, by the way, is a very graphic demonstration of the differences between males and females, with the brighter color of the male almost certainly reflecting sexual selection (with bright colors presumably advantageous in males because they attract females, but disadvantageous in females because they attract predators).

Snail Zombies. I vermi si spostano in branco e sono sociali. Piccoli mostri per grandi foto: 100 scatti nel giardino di casa. Salticidae. Da Wikipedia, l'enciclopedia libera.


Appartengono a questa famiglia 597 generi e circa 5.678 specie[1]; è la famiglia più numerosa, con circa il 13% del totale della specie di ragni conosciute. Etimologia[modifica | modifica sorgente] Il nome deriva dall'aggettivo latino salticus, cioè danzante o saltellante, per il loro muoversi continuamente a piccoli saltelli, e il suffisso -idae, che designa l'appartenenza a una famiglia. Peacock Spider 7. Peacock Spider 4. Foto del diario.

Jumping spider. "Peacock spider" Bee vs. Jumping Spider. Jumping Spiders Part 2, with Bob, the spider hunter. Salticidae immagini. Foto del diario. Salticidae, una meraviglia della natura.