Biting Midge (No-See-Um)

Culicoides, commonly known as biting midges or 'no-see-ums', belong to the family Ceratopogonidae. These are minute flies, typically 1-3 mm in length, with broad, mottled wings and a humped thorax. Their small size makes them notoriously difficult to observe. The lifecycle from egg to adult varies by species but generally takes 2-6 weeks, heavily influenced by temperature and moisture. Females lay eggs singly or in rafts on moist soil or vegetation near water. Larvae are elongated, worm-like, and semi-aquatic, developing through four instars over 1-4 weeks, feeding on decaying organic matter and small invertebrates. Pupation occurs in moist soil near the larval habitat.

Biting midges are notorious for their painful bites, often feeling like pinpricks, which are disproportionate to their size. Only the female takes a blood meal for egg development; males feed on nectar. They are most active at dawn and dusk ('crepuscular'), but some species will bite throughout the day or night. Their flight is weak and easily influenced by wind, causing them to remain close to their breeding sites, often within a few hundred meters. They are attracted to host cues like CO2 and lactic acid and can readily penetrate standard window screens.