. Ants; their structure, development and behavior. so inordinately fondof it that he believes that it must affect them very much as a goodcigar alTeet> a Mimker. Perhaps it would be nearer the truth to saythat its fascination is more like that exercised by catnip or oil of berga-niot on the various members of the cat family. Wasmann sum-marizes the distribution of the trichomes, which may be developedon almost any part of the body, as follows: On the sides of the portions of the abdomen not covered by the wing-cases ( Loincchnsa group of Staphylinids, many Clavigerids) ; on thetip
. Ants; their structure, development and behavior. so inordinately fondof it that he believes that it must affect them very much as a goodcigar alTeet> a Mimker. Perhaps it would be nearer the truth to saythat its fascination is more like that exercised by catnip or oil of berga-niot on the various members of the cat family. Wasmann sum-marizes the distribution of the trichomes, which may be developedon almost any part of the body, as follows: On the sides of the portions of the abdomen not covered by the wing-cases ( Loincchnsa group of Staphylinids, many Clavigerids) ; on thetip of the abdomen (Lomechusa group), or pygidium (many Paus-sns i ; at the tips of the wing-cases (many Clavigerids, Chatopisthesamong termitophilous Scarabaeids) ; on the sides of the wing-cases(many Panssns) ; at the posterior corners or edges of the pro-thorax (Pleuropterus and many Paiisstts among Paussids, Lomechonamong Silphids, Corythoderus and Chatopisthcs among termitophilousScarabseids, Tylois among Histerids, many Thorictus among Thoric-. FiG. 237. Two highly myrmecophilous Pselaphids. (Original.) A, Adranes lecontciof North America; B, Claviger testaceus of Europe. tids ) ; on the anterior corners of the prothorax (Napochus tcrmito-plulns); on the much elevated sides of the prothorax (Tcratosomaamong Histerids, Gnostus among Gnostids) ; in a median transversegroove on the prothorax (many Panssus) ; on the neck, between thehead and prothorax (the myrmecophilous Napochus among the Scyd-msenidse, Tetramopria among Proctotrupids) ; on a perforated horn onthe vertex (several Panssns} ; on the front (Pogonoxenus among Tene- TRLE GUESTS, ECTO- AND ENTOPARASITES. 401 brionids); on the antennal club (many Panssus); and even on thecoxae and tips of the femora (Lomcchnsa) 3. Mouthparts.—The sympliiles are not only licked, but also fed bythe ants. This has led to a peculiar shortening and broadening of thetongue, its fusion with the paraglossae and a reduction in the numberand s
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