formic acid: a colorless pungent fuming vesicatory liquid acid HCOOH found naturally in ants and many plants or made catalytically from carbon monoxide and steam; used in finishing textiles and paper and in the manufacture of insecticides and fumigants
acid: any of various water-soluble compounds having a sour taste and capable of turning litmus red and reacting with a base to form a salt
scincidae: skinks