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Show 60 Distribution· Nearctic and Neotropical, from Alaska to and Chile. Argentina Central American records Callibaetis undatus,:'wa _firt Ascribed by tce (as CLoe L, There is species, it as pictus as inadequately described, paulnus Neobaetis)·, and One three was montanus specimen assigned species A, B, as was is extant. not to (1924 by Ea ton (1885) from de s cr Lbed (Eaton, 1892). montanus was were reared in collected, Hondoas, and and are and C. Callibaetis Eaton the type and (1843) from Mexico and species represented by nymphs only designated identity of t.h Ls desribed from Costa Rica by Navas later from Mexico and Guatemala to the doubt,as some first described by Eaton was Guatemala. is tI l I s from Me;KicQ montanus Eaton 196; Banks 1900, 26:249. 1885, Aceytuno, Guatemala. Locality: British Museum (Natural Depositor:y: History) 1938,..674. Description An (18S ),. adequate description the than original S otherwise conforms to that ." -' is . . - ,... l' certainly are true I _" ._ not " , montanus. - t he montanus description, species. The nymphal It is cast provided by Eaton author in Honduras is some- ds.c:r;!c;! by Ea&on, bu]; _ specimen from The conspecific with specimens referred to this this species is Imago .r ea r ed by The female what pa ler of from North America probable skin of Honduras that the lattr that are not the rared female is not |