Homoarachnid is such a cool genus, in my opinion! It houses three intelligent species: Spinnets, Stinglings, and Acarites! They're all a bit rare, so no images today. You're welcome, arachnophobes! I'll get into the nitty gritty of each species in a bit, but I should cover the facts that apply to all three!
Similarities between species!
Homoarachnids are first notable for their eyes! They have large, monotone eyes right where you'd expect them to be, but with the addition of two much smaller eyes in the lower-outer corner of their larger eyes, with the orientation depending on what side the eyes are on! Bottom left corner for left eyes, Bottom right corner for right eyes! Despite the extra eyes, their eyesight is very poor, and often feel around with their extra limbs or use their hairs to sense vibrations. Speaking of extra limbs, they have extra limbs! Each species of homoarachnid have extra limbs of varying size depending on the species, each of these limbs sprouting from their back. These limbs seem to be more for grappling rather than movement! Each limb is insectoid, and covered in an exoskeleton, with colors matching a darker but more saturated version of the individual's skin. Female homoarachnids tend to be larger and more colorful (Especially apparent for spinnets), which is a good way to tell the sexes apart! They don't experience sexual dimorphism the way mammals and humans do. Bugs don't have titties! Otherwise, they look similar to other humanoid species. They have fangs though and those are pretty freaky. Very venomous! Don't like it! Spinnet and Stingling venom is particularly dangerous, but it's very dependent on the subspecies...
Their mating and romantic habits are quite interesting! Most (But not all!) homoarachnids exhibit homosexual behavior, both sexually and romantically. The reason for this is that males and females get flushed with hormones that cause violent reactions to each other after mating! Most people don't want to get eaten after making children. Most people. I don't judge! But yeah! Most breed out of necessity rather than out of passion. This still isn't true for every single one, though! People have their preferences.
Homoarachnia Aranea (NOT A HOMESTUCK REFERENCE)
You know spiders? These are spiders. They have the largest extra limbs of the genus, and are the only ones who can use the limbs to walk around! They look kind of silly when they do that, though. Their arms and legs dangling around...
Anyway, unique to spinnets, they can create webbing! Within their mouth is a spinneret, an organ that produces silk! Very difficult to break, and a bit too sticky for comfort. The silk becomes less sticky as it becomes less fresh, and a lot of spinnets take up knitting as a hobby using their own silk! A lot of people find it too disturbing to wear a sweater that came out of an actual living breathing person, though...
Their venom is terrifying! Depending on the subspecies of spinnet, though. Smaller species tend to have much worse venom, that can occasionally cause severe paralysis or even death! Sometimes it turns organs into a soupy substance, which is NOT an image I like having in my brain!
Homoarachnia Serket (I know I'm not helping the homestuck accusations but it's the name of an egyptian goddess with scorpion theming I promise)
Scorpion people! They have big scorpion tails with venom. I'm not sure there's much to be said about these guys. They have the shortest legs out of the homoarachnid genus, that don't have much use. They can't even climb with them... Great for hugging though! And also great for being completely helpless to being repeatedly stabbed by a giant stinger! They're normally chill though. They only do that sort of thing to their food. I hope you're not food.
Mite people! These dudes are tiny and have itty bitty mouths. These guys are like the size of human toddlers Not much in terms of venom, and have medium size extra limbs. They kinda just, suck on their food. Not much to say about these guys at all except for the fact that they spread disease real quickly...