The "Bugs"
The "Bugs" also know as Arachnids are an intelligent and brutal race of insect like aliens. The "Bugs" are an invasive species that have figured out a way of populating the universe by throwing "spores" into space. Arachnids were named after actual arachnids due to the similarity to earth arthropods.
Warrior Bug
The warrior Arachnid is the most observed species and is the reason why the alien race is named after arachnids. The warrior bug is around 7 feet tall and around 14 feet wide. It has four walking legs, 2 legs used as claws similar to a mantis, and two giant mandibles. The body is similar to arachnids in that it has only two main body segments. They have large complex eyes on the side of their cephalothorax. The chitin shell is extremely durable as it can withstand bullets but the nerve center which hold the abdomen and the cephalothorax together is vulnerable. This species is controlled by what is called a brain bug and will obey any orders given. Variation between the warrior bugs are primarily different color pattern which correspond with the terrain they inhabit. The Warriors are part of a hive mind and thus attack in huge waves but can be used as scouts or as workers. Some have even gained the ability of flight by weakening their chitin shell.
Tanker Bug
The Tanker Bug, which resembles a bombardier beetle, is the equivalent to the tank for the Arachnids. The tanker bug has 16 legs, 4 of which are used for walking and digging and are around 20-30 feet long. They can spray some corrosive liquid which they also spark to create a deadly flamethrower. Their chitin shells are extremely durable, like the warrior bug. Tanker Bugs are very good diggers. Using their front legs they can dig through most surfaces which allows warrior bugs to infiltrate better.
Plasma Bug
The Plasma Bug named after its ability to generate and shoot plasma from its abdomen. These Arachnids are gigantic, they dwarf all other land units as they could be 50 feet tall and 100 feet long at the smallest. The Plasma Bugs resemble arachnids with having eight legs but they look more like beetles more than anything else. They are used to shoot giant plasma shots into space to attack the human star ships. It is thought that since they can shoot projectiles into space that they are also the reason why the Arachnids can colonize other planets through space travel.
Brain Bugs
The Brain Bugs are the hive mind of the Arachnid race. By loosing most of its mobility these 10 foot tall Bugs gained telepathic abilities. They control the legion of Warrior, Tank, and Plasma Bugs. They have 10 legs, a set of mandibles, and a hidden proboscis that comes out of the hole in the middle of their face which is used to absorb the intelligence out of other animals. The proboscis is sharp and pierces through the skull which then sucks out the brain fluid. Capturing one of these gave the humans its first true victory against the Arachnids.