rating: +15+x

SCP-5627-1 removed from SCP-5627-3 residence prior to incineration

Item #: SCP-5627

Object Class: Euclid

Special Containment Procedures: The 28 known extant colonies of Myrmica sabuleti1 are to be monitored monthly by a Class C Foundation myrmecologist. All efforts must be made to sustain these colonies as viable hosts for Phengaris arion2 larvae. If ant numbers fall below required levels then activities must be triggered to detect, remove and remediate any SCP-5627 anomalous parasitic phenomena. Access to colony location coordinates requires Level 2 clearance.

Foundation staff involved in managing SCP-5627 should familiarise themselves with the parasitic lifecycle of the P. a. arion butterfly3.

Description: SCP-5627 is the collective designation for anomalous parasitic phenomena pertaining to the P. a. arion butterfly species.

SCP-5627-1 are anomalous P. a. arion larvae. They manifest when P. a. arion's brood-host colonies of M. sabuleti come under extreme survival pressure and are unable to sustain non-anomalous P. a. arion larvae. Example causes of colony collapse include over-intensive farming, chemical contamination, noise pollution and flooding. SCP-5627-1 parasitic behaviour, including SCP-5627-2 production, is a survival mechanism of last resort.

SCP-5627-1 have pink bodies with brown heads and fine colourless bristles. Their segmental divisions are deeply incised, with a longitudinal dorsal furrow. During its 270 day larval period, with sufficient protein intake, an SCP-5627-1 grows from 3.0 mm in length to 50-60 cm with an average final mass of 4.0 kg. It then enters its pupal stage, forming a chrysalis. Thereafter growth ceases. Dissections of pupal SCP-5627-1 invariably find they have exceeded their maximum biologically viable size. No final butterfly forms of SCP-5627-1 have been observed.

Analysis of SCP-5627-2, the milky-white saccharine liquid secreted by SCP-5627-1, has established traces of psychotropic and hallucinogenic compounds. Its mechanism of action merits further study. SCP-5627-2 has been detected in aerosol form up to a 200 m radius of an SCP-5627-1.

SCP-5627-3 are humans under the influence of SCP-5627-2. SCP-5627-3s, exposed to SCP-5627-2 in its aerosol form, will perceive an SCP-5627-1 instance to be a person of great importance to them. Operating under this delusion they will introduce the instance into their home, where they will groom and feed it with whatever protein they can obtain over a period of months.

SCP-5627-3 status can be determined from the following behaviours, all of which are consistent with ant-host functions under non-anomalous P. a. arion influence:

Aspect SCP-5627-3 Diagnostic Behaviour
Acquisition Conveying an SCP-5627-1 instance to the SCP-5627-3's residence, storing the individual buccally or sub-lingually for safe transport, size-permitting.
Hosting Installing SCP-5627-1 in the SCP-5627-3's sleeping accommodation.
Grooming Orally and manually cleaning SCP-5627-1's bristles, segmental grooves and dorsal furrow throughout its larval growth phase.
SCP-5627-1 Nutrition Feeding SCP-5627-1 with any procurable protein via mastication and oral-to-oral regurgitation.
SCP-5627-3 Nutrition Ingesting SCP-5627-2 daily from SCP-5627-1's dorsal gland in increasing quantities as the larva grows.
Hallucinations Perceiving SCP-5627-1 as the most critically "important" member of their family
Protection Prone to extreme anxiety and even violence (usually biting) if SCP-5627-1 is removed from the residence or threatened in any way.

SCP-5627-3 will neglect all other non-survival-essential activities and relationships. Nutrients gained from ingesting SCP-5627-2 satisfy SCP-5627-3 calorific intake requirements.

With support SCP-5627-3s are able to return to their normal behaviour patterns when the SCP-5627-1 is removed or dies.

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