Figure 1

Antarctic midge, Belgica antarctica, during reproduction. (A) Mating pair, male on left. Inset, spermatophore transferred to females immediately after copulation. Image is posterior end of female and white material is the spermatophore. (B) Female depositing eggs and accessory gland-derived gel. (C) Accessory gland (left middle, b) and ovaries (top left and right, a) of gravid females 3 days after adult eclosion. (D) Female accessory glands (left, a) and ovaries (top and right, b) following egg and gel deposition. (E) Egg mass following the completion of deposition. (F) Male reproductive tract, a. testes, b, accessory gland, and c, common duct.