Here's my try on a species:
Name: Crymits
adjective: Crymitian
Description: This species is divided between two major forms.
-The first, very numerous, is a head-sized crab-like creature, with a soft, red-glowing body, and a red gem-looking conic carapace. It has eight legs. Its head have ten tentacles of various size, four equipped with various tools, from spikes to claws or simply prehensile sub-tentacles, and the six others being used for eating purposes. Note that all crymits don't have the same set of tentacles tools. Some may be soldiers, with claws and stings, when workers will have digging and prehensile tentacles.
-The second form, very rare, is strangely humanoid. These powerful individuals are the heads of the Crymitian civilisation, their "emperors" and "empress". They mostly look like skinny humans made of the same red, glowing "jelly" that compose the crymits' body, with some kind of strange carapace armor (red gem-looking, like the others). Although they can expose a beautiful face, they prefer hiding it under a perfectly smooth gem-like mask. Very intelligents, they all show powerful capacities. Most of them are solitaries.
-Both of these forms live deeply underground, inside eery caverns they dug, and eat whatever they find: fungus, insects, mammals, etc...
-Note: "Crymits" can refer either to the whole civilisation or only the crab-like form. The others are called "Emperors".
Breeding factor: 4 - 1 (10EP)
Multiplying factor: 1000 - 1/1000
Physiological traits:Shell 3 (4EP): The crymits bear a red gem-looking carapace, making them look like hermit crabs. The look is deceiving: The carapace is no way as resistant as diamond. But it's still protective.
Digging 5 (9EP): Thanks to claw tentacles, crymits can dig huge tunnels in no time.
Prehensile tentacles/arms 2 (2EP): The crymits can grab objects, for handling debris from digging activities or transporting tools or objects for the Emperors. The Emperors themselves have human arms and hands.
Weaponized tentacles 4 (6EP): Various stings-, claws- and spikes-tentacles can cause sever wounds to intruders. Some even have blunt weapons, but it's uncommon.
Legs 6 (12EP): Of course it walk on something. And it can walk on walls and ceilings just like spiders. Assuming it's rough enough (it can't walk on glass walls). Emperors Walk the same way as humans.
Crystal growing 1 (1EP): Through secretions, Crymits can grow red-glowing crystals inside the "hive".
Supernatural traits:Magic Vision 3 (4EP): They have eyes, but they don't see in visible light, but in the
magic spectrum, allowing them to see better the races and individual with magic potential, magic spots and objects, etc.
Mind Hive 2 (2EP): The Crymits communicate through hissing and rattle (is this the right word?), but also in limited telepathy. Emperors are of course way more powerful.
Magic Affinity 1 (1EP): The Emperors are powerful magicians, and instinctively master magics path of earth and mind.
Civil traits:Keen intelligence 3 (4EP) Crymitians Emperors are known for their superhuman intellect, wich allow them to govern the whole crymitian race (thus ensuing the term "emperors").
Probably more later. and some adjustments if necessary.
PS: YES I copied zergs and kerrigan. But I did so unconsciously