. Ants; their structure, development and behavior. FIG. 116. Gall of Holcaspis cinerosus on live oak, showing soldier of Colobopsisetiolata closing the round hole in the gall with its head. (Original.) same manner. The same habit is also seen in other ants, for example inCamponotus ^uttatus of the American tropics. Fig. 114 shows theends of a couple of twigs of the sea-grape (Coccohba inifcra) whichI found at San Juan, Porto Rico. They have been plugged with ANT-NESTS. 21 I ligneous carton by the nest-founding queens and subsequently per-forated by the workers. Even more interesting is the
. Ants; their structure, development and behavior. FIG. 116. Gall of Holcaspis cinerosus on live oak, showing soldier of Colobopsisetiolata closing the round hole in the gall with its head. (Original.) same manner. The same habit is also seen in other ants, for example inCamponotus ^uttatus of the American tropics. Fig. 114 shows theends of a couple of twigs of the sea-grape (Coccohba inifcra) whichI found at San Juan, Porto Rico. They have been plugged with ANT-NESTS. 21 I ligneous carton by the nest-founding queens and subsequently per-forated by the workers. Even more interesting is the behavior of Colobopsis etiolata whenit nests in Ho/cassis galls. This ant (Fig. 115) has strongly markedsoldiers, with peculiar truncated, roughened, stopper-shaped heads which. FIG. 117. Holcaspis cincrosns gall opened to show ants and their galleries inits woody substance. Two workers and three soldiers are shown ; one of the latterin the act of closing the hole which serves as an entrance. (Original.) exactly fit the circular holes in the galls (Figs. 116 and 117). Theseindividuals are, therefore, told off to act as animated portals to the a worker wishes to forage on the branches of the oak, it ap-proaches the stationary soldier from behind and palpates its gaster. 212 ANl The soldier moves aside to let the worker pass out and then at oncemoves its head hack into the circular aperture. In order to enter, thereturning worker ha- to stroke the soldiers truncated forehead, and theguardian again > aside for a moment. Though most abundant in the oak-galls, C. ctu>la/a occasionally nests in the hard wood of treetrunks and branches (Carya myristicccfolia), apparently in preformed larval burrows. This seems to be the usualmethod of nesting of
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Keywords: ., bo, bookcentury1900, bookdecade1910, booksubjectants, bookyear1910
