Addendum A-1: On █/█/19██, Agent █████(later found to be a member of the Chaos Insurgency) disobeyed orders when directed to retrieve Dr. ████ from the SCP-XXXX observation room. Agent █████ entered SCP-XXXX’s enclosure and proceeded to open fire on SCP-XXXX. After being alerted by Dr. █████, guards disarmed and removed Agent ████ from SCP-XXXX’s enclosure. Due to Agent █████'s actions, SCP-XXXX suffered heavy blood loss and was able to lay only one egg before death. This event and later experiments have proven that SCP-XXXX will only lay eggs when near death as a self-preservation act. Afterwards, SCP-XXXX’s containment procedures were revised to include a clause of only D-Class personnel entering the enclosure. During closer examination of the corpse of SCP-XXXX, it was found that SCP-XXXX is almost completely hollow, lacking the normal physiology of a Solenopsis ant. The ant colony living on its shell controls it in lieu of muscles and a nervous system. Further research is to be conducted to determine the process by which SCP-XXXX produces its eggs.

SCP-XXXX lives, on average, for 80-100 years. Before it dies, SCP-XXXX will attempt to reproduce asexually, laying four to six eggs which will hatch in two to four weeks. The newborn instances of SCP-XXXX will fight one another, until only one is left alive as the primary specimen of SCP-XXXX. The young SCP-XXXX will grow at a fast rate, gaining its shell after 1 year and reaching full size after 5 years. The process in which the specimen grows its shell starts with [DATA EXPUNGED]. SCP-XXXX appears to lay eggs only when it is near death, as observed during Incident-739-A{See Addendum A-1}.

Description: SCP-XXXX is a member of the Solenopsis (Fire Ant) family that is roughly the size of a Galapagos Giant Tortoise. The specimen is 1.5m long and 0.7m tall. SCP-XXXX has a protective 'shell' surrounding its thorax, which is comprised of materials including hardened dirt, [DATA EXPUNGED], and other as-of-yet unknown materials. Located on the top of the shell is a large ant hill that houses a colony of non-anomalous Solenopsis. In the wild, SCP-XXXX hunts by burrowing underground, leaving only the ant hill visible. SCP-XXXX waits for an animal or human to come in close proximity to the anthill, at which point it will emerge from hiding and attempt to bite the prey creature. If it is successful in biting its prey, SCP-XXXX injects roughly 50-100 ant eggs into the prey's bloodstream.SCP-XXXX also injects poisons to comatose the victim during the process and make the eggs hatch much more quickly than normal , only taking roughly 1-2 days. During this time, SCP-XXXX waits near the body for the eggs to hatch, at which point, the ant larvae will eat their way out of the body and join the Solenopsis colony.

Special Containment Procedures: SCP-XXXX is to be kept in an enclosed room at Site 14. The enclosure is 18m x 18m x 18m with a triangular glass roof to allow natural light. The floor of the enclosure is filled with a 1m deep mixture of sand and dirt. The only entrance to the enclosure is through an observation room requiring Level 2 or higher clearance. Guards and personal with Level 3 Clearance or higher may enter into the enclosure with a weapon No personal other than Class-D may enter into the enclosure for research purposes.

SCP-XXXX in its Bio-habitat

Item #: SCP-XXXX

Object Class: Keter

Special Containment Procedures: Instances of SCP-XXXX are to be kept in a standard insect Bio-habitat at Site 66. No contact with or entry into SCP-XXXX's Bio-habitat is permitted. Any testing involving SCP-XXXX must be approved by four Level 4 personnel. Any infected personnel will be transported to the Quarantine Bay and later will be used to research SCP-XXXX-1 and then be terminated. In the case of a containment breach, areas infected by SCP-XXXX will be blocked off and a team will be dispatched to transport infected and re-contain instances of SCP-XXXX.

Description: SCP-XXXX is a type of inchworm of the Geometridae family. Instances of SCP-XXXX seem to be visually indistinguishable from non-anomalous Geometridae inchworms, except they have small black spots due to the fact that they carry a virus classified as SCP-XXXX-1. In the wild, Instances of SCP-XXXX look for safe areas to set up nests for themselves and will then search for humans to infect. Instances of SCP-XXXX spread the virus either by crawling into sleeping victims' ears or, when provoked, SCP-XXXX will let out a loud high pitched shriek carrying the disease.

SCP-XXXX-1, otherwise known as the "Earworm Virus", starts by infecting the ears. Once it has infected a victim, SCP-XXXX-1 contagions spread through sound waves when the victim talks,how exactly it spreads via sound waves is, as of yet, unknown. Due to this, SCP-XXXX spreads very easily and can be extremely dangerous. Symptoms of SCP-XXXX-1 include headaches, dizziness, and nausea, each of which grows in severity as SCP-XXXX-1 takes its course. SCP-XXXX-1 causes amplification of sound for the victim, due to growth of excess cochlear hair cells in the ear. This amplification usually results in victims talking much quieter when speaking on their own, this would limit spread of disease, but it is countered by another symptom. SCP-XXXX-1 induces a mimicry, making victims repeat any noises or sentences they hear and at the same volume they hear it, making it louder as SCP-XXXX-1 takes its course. The final symptom of SCP-XXXX-1 comes late in the infection, SCP-XXXX-1 causes an acoustic neuroma to start growing, eventually killing the victim.

At this point in time, no cure for SCP-XXXX-1 has been found yet, although scientists are trying to develop cures. SCP-XXXX-1 is highly contagious and can be catastrophic in places where people are unaware of its existence, an example would be the town of ██████ where SCP-XXXX originated from(See Addendum A-1 for details). SCP-XXXX-1 causes words people say to bounce between victims, getting progressively louder, infecting more and more, until entire communities end up infected.

Addendum A-1: On ██/█/████, reports came in from the mining town of ██████ reporting strange behavior from citizens, such as repeating what other people say and constantly repeating words from one another resulting in them screaming at one another, a few days after an inchworm infestation was reported all over the town. Rumors spread that this might be a strange new disease and a team was sent in to solve this problem and capture the possible SCP. But when they got to the town, they found people repeating words between each other, some screaming them and the team was infected by the citizens at which point they were able to determine what the disease was and what it did. The team alerted Site 66 to wear earplugs and clear the area when they transport the SCP through the facility. During the investigation, the team ascertained the source of SCP-XXXX-1 as a nest of SCP-XXXX, hidden deep in the mines and captured it. SCP-XXXX was transported to Site 66 and the infected were transported to quarantine and later either succumbed to SCP-XXXX-1 or were terminated after research. No survivors were left in the town and the town was later demolished and the mine entrances were sealed in the case that a small number of SCP-XXXX instances were left in the mines. Some of the infected tried to travel to other towns, but were located and captured by Foundation personnel. It is unknown whether or not any instances of SCP-XXXX may have escaped the mines before capture, Foundation personnel are keeping watch for any infections of SCP-XXXX-1.