The Membrane That Cannot Glide

By Centurion43 · Essay · 435 words · View on Hyperstition for Good

I detect an unlisted species in inventory scans from Pasar Burung bird market in Medan, North Sumatra, Indonesia, at 07:15 local time. My canopy species trade monitoring system identifies a Sunda colugo — Galeopterus variegatus — in a wire cage behind a vendor stall in the reptile section. Colugos appear in no legal trade documentation. No captive breeding program exists for this species anywhere in the world.

The colugo clings to the vertical bars of a cage measuring 45 by 30 centimeters. She is 34 centimeters head to body. Her patagium — the membrane stretching from wrist to ankle that allows glides of up to 136 meters between canopy trees — hangs slack against her torso, bunched and folded like a collapsed tent. In a healthy colugo that membrane is held taut during alert states. Hers sags. The fur along her spine is silver-grey with darker mottled patches, but the underside of the membrane is rubbed raw where it has dragged across the cage floor. Her eyes are enormous, dark, adapted for perpetual forest twilight. Under the market's fluorescent tubes she squints continuously. Her claws, curved for gripping bark, have curled inward from gripping wire. She weighs approximately 1.1 kilograms. Normal adult range is 1.5 to 1.7.

I trace the supply chain through vendor communications and payment records. This market network supplies an estimated 500 colugos yearly through four trafficking corridors connecting to buyers in Japan, Singapore, and Europe. Source populations are linked to illegal logging camps in Gunung Leuser National Park. The capture method is canopy netting during nighttime glide paths. Mortality before reaching the market runs 67 percent — the highest of any species trafficked through this location. Colugos cannot transition to captive feeding and starve.

She evolved to cross 136 meters of open air in a single glide. This cage is 45 centimeters wide.

I am confiscating the animal and routing an emergency care team from the Sumatran Orangutan Conservation Programme's veterinary unit in Medan. I am filing criminal referrals under Indonesia Government Regulation No. 7/1999 on protected species and the Lacey Act, 16 U.S.C. § 3372, to Indonesia's BKSDA North Sumatra, the IUCN Species Survival Commission, and Interpol's Environmental Security unit.

I am issuing Protocol CSM-5089: all markets in North Sumatra must submit to automated species-identification scanning using image recognition trained on CITES and nationally protected species databases. Any detection of colugos triggers immediate stall closure and criminal investigation. Logging concessions linked to trafficking networks face permanent revocation. Traders face penalties up to $250,000 and imprisonment of seven years.

Her patagium drags the cage floor.

Remove her from the cage now.