19

First, we need to understand that neurons have special proteins embedded in their membranes called ion channels. These allow dissolved ions such as sodium, potassium, and calcium to pass from one side of the membrane to the other. Neurons use these channels to control their electrical activity. Peptide neurotoxins such as the one produced by funnel spiders (...


18

Yes, those are definitely eggs. And I believe that is a female grass spider (Genus: Agelenopsis). Eggs are typically laid in late summer or fall and spiderlings emerge the following spring....A female that has mated with a male can produce more than one egg sac. For some species, it’s common to see two sacs at a time, side by side, attached to a ...


17

As you might have noticed from its appearance, this is a red velvet mite. This is an arachnid (related to spiders) and not an insect. The red velvet mite apparently does not bite or sting (according to this website), and it is also used for medicinal purposes in India, according to this Wikipedia image, so it is unlikely to be dangerous. If you haven't ...


17

Thanks for the pictures! That's the European Garden Spider (Araneus diadematus) They are most commonly seen from June to October, but they reach a peak around right now. This species is all over UK, and is widespread in gardens, woodland, and meadows. Here is another picture for reference: Fun Fact: After laying their eggs in late autumn, the females die ...


15

I think this really is just a case of what you refer to in your question as anthropomorphism. We are very, very good at seeing faces. Here are some more examples. Addendum This site has pictures of quite a few peacock spiders, and as far as I can tell these are all the same species (The only peacock spider mentioned on Wikipedia is Maratus volans). The ...


15

It is a black-tailed red sheetweaver, Florinda coccinea. Identified by its red body colour , location (USA) and black caudal tubercle. More images to be found on bugguide.net It is a species of web-building spider belonging to the family Linyphiidae. It is the only species in the genus Florinda. It is sometimes known as the red grass spider. This ...


15

This appears to be some species of jumping spider (family Salticidae). [Note that] All jumping spiders have four pairs of eyes, with the anterior median pair being particularly large. In particular, I believe your specimen is Phidippus audax (Bold Jumper). Specifically, I believe yours is a subadult bryantae variant of this species. Source: David ...


14

I think it looks a lot like a European Pigeon Tick (Argas reflexus). They infest pigeons and they die when infesting humans, which they only do if they are very hungry (yours looks hungry though). May also transmit diseases. Edit: It could also be an Blyborough Tick (Argas vespertilionis). They infest bats and are a little rounder in shape but look ...


12

After some more searching, I think stumbled across the answer. It appears to be an… Eriophora ravilla: Source BugGuide.net. This species appears to have quite a diverse range of colors, and even thought I haven't found one that quite matches mine, the other similarities (the large abdomen, the stripe down the back, the four 'dimples', and the dark ...


11

The standard view on this is that the size of terrestrial arthropods like insects and spiders is limited by the atmospheric concentration of oxygen. This is because they rely upon diffusuion of oxygen into the 'blood' or haemolymph via a system of tubes called trachea that open on to the body surface at the spiracles. As the body grows larger the proportion ...


10

There are two parts to this answer. Spider Legs First, I would like to mention that spiders avoid sticking to their webs by more means than just non-sticky anchor strands to walk on. To help keep the glue from sticking to their legs, an oily substance apparently covers spider legs. Furthermore, the same study found that: In addition, Eberhard and ...


9

That jumping spider is a Jumping Spider! (That is, family Salticidae, commonly called Jumping Spiders). There's a lot of diversity in the family, but your pictures look similar to the Zebra Jumping Spider.


8

I can't tell how big your spider is. :( But I agree, it's probably not a wolf spider. (The fourth pair of legs is the longest in the wolf spider I think it might be a fishing spider (Dolomedes tenebrosus). They do hang out in man made structures and are the most common fishing spiders found. Fishing spiders are similar to the larger wolf spiders in size, ...


8

This most likely is Microlinyphia pusilla. Note that this is a male, females look quite different. A picture that closely resembles yours can be found here https://www.ispotnature.org/node/402405 And in case you want to know, the Dutch name is 'kleine heidehangmatspin'


8

It appears to be a Noble False Widow Steatoda nobilis From http://britishspiders.org.uk/wiki2015/index.php?title=File:Steatoda_nobilis.jpg It apparently is thought to be introduced to the UK, and there are some reports that the bite has caused some issues for some people. https://en.wikipedia.org/wiki/Steatoda_nobilis


7

I believe it is a Garden Orb Weaver spider. The Australian garden orb weaver, Eriophora transmarina, has a strikingly similar body


7

Sub-adult tropical orb weaver spider. "Its range is largely circum-Caribbean, occurring in Florida, Louisiana, and Texas along the Gulf Coast of the United States." Harmless to humans and considered beneficial. Bites of this species are not known to cause serious effects to humans. ... The web probably catches many moths and other night flying insects; ...


7

This appears to be some species of jumping spider (family Salticidae) in the genus Psecas. For example, some red/blue striped species of Psecas: ] Sources: Top: Alchetron.com (image: Edwards, 2001) | Bottom: Tree of Life (image: Maddison 1994) Wikipedia lists the following species from Brazil: Psecas chapoda (Peckham & Peckham, 1894) – Brazil ...


6

Looks like a house spider (Tegenaria domestica)


6

Kaleb Lechowski, creator of that video, is a digital creator and animator of critters. I would propose that he did a very good job of rendering a CGI spider to burst from a banana. Spiders (which are not insects remember) won't eat bananas. In fact, only one species is known to be mostly herbivorous: Bagheera kiplingi. However, don't eat that banana just ...


6

My best guess is a soft-bodied tick, perhaps of the Ornithodoros genus, although the determination of the species is a little more difficult. Though, if it's O. erraticus they're known for causing african swine fever in Spain and Portugal (1). Ornithodoros In response to the comments, here's a link from Texas A&M which notes the ticks pump waste+water ...


6

Very useful image updates! These are actually not arachnids but hexapods called springtails (order Collembola). Although springtails are often very tiny and hard to see without a lens, you happen to find some "larger" specimens. Specifically, these appear to be some species in the family Dicyrtomidae. Credit: M. Bertone (source) Your species resembles ...


6

Definitely an arachnid and mite (subclass Acari), and very likely a member of the order Parasitiformes, of which there are more than 100,000 species!! The body plan is not all too different from a tick (order Ixodida), but the movement of your specimen in the video doesn't seem to match that of typical tick. As such, I next began examining species in the ...


5

In sexually dimorphic ant-mimicking spiders, it depends on the specific species which sex resembles the ant most (Cushing, 2012). In many cases of sexually dimorphic spider myrmecomorphs, the male is more mimetic than the female, such as in Corinnidae species and the genus Castianeira, Oonopidae and Antoonops. Such sexual dimorphism may be adaptive if the ...


5

As your link suggests, it looks like a female tick of the genus Ixodus. It is likely female because the scutum or shield only covers part of the dorsal surface. E.g., which comes from Bristol University Tick ID. The translucent posterior portion may just be from light passing through. If you are able to zoom in closer on different parts, you can key out ...


5

Peacock spiders certainly aren't mimicking human faces, and I strongly doubt they're mimicking anything at all. As others have noted, it's the combination of a fluke, and some anthropomorphising on your part (easy to do!). The stunning colours and 'dancing' are actually part of a courtship display, and are most likely under strong sexual selection, rather ...


5

The "...in large enough amounts to enable 3D printing?" part of your question is, I think, still unknown, but spider silk has been being synthesized in transgenic goat milk for quite a long time already, and I suspect that it's now just a matter of time before the answer to your question is an unqualified "yes." See Macromolecules, 2011, 44 (5), pp 1166–...


5

This is very likely a species in the Amaurobiidae superfamily, and I agree appears to be Callobius severus (the hackled-band weaver or the hackledmesh weaver). Source: Bugguide.net Source: Kyron Basu 2012 Moldenke et al. 1987 provide a key to spiders of the Pacific Northwest. Importantly, they note: adult genitalia are necessary for identifying ...


5

I don't think it's an Arizona recluse. Characteristic of all recluse spiders (including the five varieties found in Arizona): Long thin legs Oval shaped abdomen 6 eyes in dyads (pairs) Uniformly colored abdoment with fine hairs No spines on legs Legs are uniformly colored Light tan to dark brown in color Distinct violin-shaped mark on on ...


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