A REVISION OF BIBIO (DIPTERA, BIBIONIDAE) OF MEXICO AND CENTRAL-AMERICA

The species of Bibio (Diptera: Bibionidae) known to occur in Mexico an d Central America are reviewed. Fifteen species are recognized as occu rring in this region, six described as new to science: B. albipennis S ay, B. atrigigas n. sp., B. borisi n. sp., B. chelostylus n. sp., B. c hiapensis n. sp., B. criorhinus Bellardi, B. fuligineus Bellardi, B. o reonanus n. sp., B. piceus Bellardi, B. intermedius Rondani, B. slosso nae Cockerell, B. stonei Hardy, B. superfluus Schiner, B. xanthopus Wi edemann, and B. xeronastes n. sp.. Bibio alienus McAtee and B. vestitu s Walker are included as possibly occurring in northern Mexico, and ta xonomic changes for these species are discussed. Lectotypes are design ated for B. criorhinus, B. fuligineus, B. intermedius, B. piceus, B. s tonei, and B. subaequalis Rondani. Six new synonyms are presented: B. albipennis baemeri Hardy = B. albipennis; B. rufalipes Hardy = B. alie nus; B. peruvianus Edwards = B. subaequalis; B. dispar Schiner and B. carolinus Hardy = B. superfluus; B. mickeli Hardy = B. vestitus Walker . Diagnoses and distributions are given for all species. A key to the species of Mexico and Central America is presented, and male terminali a and male and female hind legs of all species are illustrated for com parison. Notes and illustrations of types of some South American Bibio species are given.