. Ants; their structure, development and behavior. e the true monarchsof the trees. To my knowledge, none of thespecies of Azteca and only one Pseudomynna (P. elegans] nest inthe ground. But what a varied arboreal existence is led by theselittle monkeys among the ants as they climb and scurry abouteverywhere on the trees! Some of them build carton nests on thetrunks and branches, others nest in great cavities in the trunks ; others(A. hypophylla) nest under the leaves of certain vines with theseorgans closely applied to the trunks, and close up any openings at theedges of the leaves with carto
. Ants; their structure, development and behavior. e the true monarchsof the trees. To my knowledge, none of thespecies of Azteca and only one Pseudomynna (P. elegans] nest inthe ground. But what a varied arboreal existence is led by theselittle monkeys among the ants as they climb and scurry abouteverywhere on the trees! Some of them build carton nests on thetrunks and branches, others nest in great cavities in the trunks ; others(A. hypophylla) nest under the leaves of certain vines with theseorgans closely applied to the trunks, and close up any openings at theedges of the leaves with carton. Others, again, make use of the cavi-ties of dead branches, while still others nest in the natural medullarycavities of living Cecropia trees or any hollow swellings or spaces inall kinds of plants. Finally Mr. Ule has discovered and described ant-gardens in which grow certain epiphytes that are sown by species ofAzteca. Now I believe that the long, narrow head of the female andof the large workers of many members of this genus, as well as that. FIG. 173 Base ofleaf petiole of Cecropiaadenopiis. (Schiinper.)t. Trichilium, or hairycushion in which theMiillerian bodies (m )are formed. 3°4 JA/.Y. < i f man}- species of Pseudomyrma point to a life in very narrow, tubularbranches and twigs. The small Azteca worker is small enough to enterand leave such openings without the great elongation of the head, whichin the much larger queen is necessary for the accommodation of thepowerful mandihular muscles. The nearly brainless and jawless male does not require this adapta-tion. A broad, depressedhead points to a life in muchflattened cavities (A. hypo-phylla), etc. There are, to besure, other differences in theform of the head (trigonaand aurita, both carton-builders ) that cannot be ac-counted for in this way. Atleast one species of Asteca (A.•Ziridis) is green, a very un-usual color in ants and evi-dently an adaptation to lifeamong living leaves. In Psett-doinynno species the wh
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Keywords: ., bo, bookcentury1900, bookdecade1910, booksubjectants, bookyear1910
