#hexapoda

[autisticplants]

i found lots of different Eumorpha fasciatus caterpillar color morphs today!

[coffeenuts]

[apsciencebydan]

The tiny Wet Wood World (www) of one log provided me not only with the pink mites, but also two species of Neelid! 😍 The little grey lumps are much bigger than the pale one (Neelus murinus possibly). I had not seen the grey ones in Florida until now!

[quark-nova]

Introduction

Hexapoda is, by far, the most successful group of animals ever. Descended from crustaceans, they probably emerged on land during the Silurian period, although the earliest definitive fossils like the springtail Rhyniella date from the early Devonian.

Today, nearly a million hexapod species are known, the vast majority of them insects, making up half of all known animal species. They have colonized all habitats, with one insect and multiple springtails even being known from the Antarctic mainland.

The basal ones

These orders belong to neither of the two larger Hexapoda classes (insects and springtails). They have traditionally been grouped with springtails in the "Entognatha" due to their hidden mouthparts, although phylogenetic studies show that they might have acquired this trait independently.

Protura, the coneheads

Protura sp., David R. Maddison, CC BY-SA 3.0

Tiny, eyeless creatures less than one millimeter long, proturans are usually found in leaf litter and moist soils. They are functionally centaurs, holding their front legs up like antennas to sense their surroundings.

They are believed to be the sister group of springtails in the clade Elliplura, although some scientists have placed them as basal to all hexapods, or even as a completely separate group. Fact is, they're tiny, easy to miss, and still extremely understudied.

Diplura, the two-pronged bristletails

Campodea staphylinus, Mvuijlst, CC BY-SA 3.0

Pretty much the poster child for what the default hexapod looks like. Another group of eyeless creatures found in leaf litter and moist soils, they can reach up to 5 centimeters long. Their main feature is their long pair of cerci (ass antennas), nearly as long as their actual body. Some of them have turned their cerci into pincers, making them look like earwigs.

Diplurans are most likely the sister group of insects in the clade Cercophora (ass antenna bearers), and indeed look like an off-brand version of basal insect groups. Earlier diplurans like Testajapyx from Mazon Creek had semi-external mouthparts and functioning eyes, so their loss in modern diplurans is very much a skill issue.

[jupiterswasphouse]

[VIDEO TAKEN: FEBRUARY 21ST, 2024 | Video ID: A video zooming in on and showing two yellow globular springtails roaming on a leaf sticking out of the water, one smaller and more mobile than the other /End ID.]

Kind of hard to get quality video of these beasties with how tiny they are, but it's super nice to see springtails in the wild!

[collemblogging]

yellow and orange neanurid springtails. orange springtail likely Vitronura giselae

[unnaturalcuriositiesblog]

[nepenthesbaphomet]

felt cute, might delete later

[midonlynx]

Haven't posted in a fat second, this is a critter I'm working on

[autisticplants]

Isodontia auripes emerges from its nest within the wooden board of a picnic table, snips off a dried blade of grass, and carries it back to its nest.

[coffeenuts]

[apsciencebydan]

It's a very, very small thing, but I'm so happy to have thriving populations of Neelid springtails in my two isopod/Shy-Hulud enclosures! I added a bare handful (actually about 5, not a literal handful, which would number in the thousands at least) last year, and they've multiplied! 🖤

[quark-nova]

I just want to write about every single hexapod order (insects, springtails & friends) but I know if I start I'll never finish it (and I still haven't finished the phylum one from last year)

[jupiterswasphouse]

[PHOTOS TAKEN: JULY 3RD, 2023 | Image IDs: Two photos of a very small brown springtail on the second knuckle of a human finger, blurred green and brown grass in the background /End IDs.]

Very exciting seeing a wild springtail, for me! This is one of three types of hexapods (arthropods with six legs) that are currently not considered insects, this being of the group Collembola while the others are Protura (coneheads) and Diplura (two-pronged bristletails)

[collemblogging]

Sminthurinus quadrimaculatus, an unknown Sminthuridiae, and a fungus gnat larva enjoying a patch of strikingly purple mold.

[unnaturalcuriositiesblog]