General practitioners are frequently consulted for back and joint pain. Rarely, they are caused by serious diseases necessitating quick action to prevent complications such as irreversible neurological deficits or cartilage destruction. These include infections, haemorrhages and tumours, as well as
The larvae of the sawfly Rhadinoceraea micans live and feed on a semi-aquatic plant, Iris pseudacorus, and their integument is strongly hydrophobic. The hydrophobicity is part of a chemical defence strategy, easy bleeding, also known from congeners. The prepupae burrow into the soil where they form