. Ants; their structure, development and behavior. Fir,. 56. Mottomonitni floricola.(Original.) (;. Worker; b. apterous fe-male (ergatogyne) ; c, same seen fromthe side. 96 .-JXTS. ihe normal female which is then called the l-female. In this case,therefore, the female is dimorphic. The /?-female is characterized byexcess development- in the legs and antenna? and in the pilosity of thebod\ or hy defective development of the wings. 12. The crt/dtoi/ync. ergatomorphic, or ergatoid female, is a worker-like form, with ocelli, large eyes and a thorax more or less like that ofthe female, hut without
. Ants; their structure, development and behavior. Fir,. 56. Mottomonitni floricola.(Original.) (;. Worker; b. apterous fe-male (ergatogyne) ; c, same seen fromthe side. 96 .-JXTS. ihe normal female which is then called the l-female. In this case,therefore, the female is dimorphic. The /?-female is characterized byexcess development- in the legs and antenna? and in the pilosity of thebod\ or hy defective development of the wings. 12. The crt/dtoi/ync. ergatomorphic, or ergatoid female, is a worker-like form, with ocelli, large eyes and a thorax more or less like that ofthe female, hut without wings. Such females occur in a number of>pecies of ants. They have been seen in Mynnccia, Odontomachns,Anochctus, Ioncra, Polyergus, Leptothorax, Monomorium and Ov-inastoyastcr. There is nothing to prove that they are pathological in. FIG. 57. Formica inccrta. (Original.) <i, Normal worker: b. pseudogyne drawn to the same scale. origin. In fact, in Monomorium floricola (Fig. 56), and certain spe-cies of Anodic tits they appear to be the only existing females. Inother cases, like Poncra cduardi, as Forel has shown, they occur withmore-or less regularity in nests with normal workers. They also occurunder similar conditions in colonies of the circumpolar P. coarctata,and among other species of the genus. 13. The pseudogyne (Fig. 57, b ) is a worker-like form with enlargedmesonotum and sometimes traces of other thoracic sclerites of thefemale, but without wings or very rarely with wing vestiges. Thisform, when it occurs among species of Formica, is produced by thepresence of Lomechusine beetles in the colony ( see p. 407 ct scq.). POLYMORPHISM. 97 14. The phthisogyne arises from a female larva under the sameconditions as the phthisaner, and differs from the typical female in thesame characters, namely absence of win
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Keywords: ., bo, bookcentury1900, bookdecade1910, booksubjectants, bookyear1910
