Pheidole

Vespidae Pheidole pallidula W-PG Attracts stimulates locomotion in workers 3-Ethyl-2,5-dimethylpyrazine 65 [187]... [Pg.169]

Ants attend the mealy bugs, and these ants are of special importance. The genus Pheidol occurs in the Eastern Hemisphere, and Acropiga in the Western. These insects carry the mealy bugs from place to place, protect them from predators, keep them free from disease and dirt, and are most important in their life economy. Without ant help the mealy bug colonies cannot flourish. [Pg.57]

In the case of food bodies, the primary mechanism of induction might be food body removal. Risch and Rickson (1981) showed that the production of unicellular food bodies by Piper cenocladum is stimulated by the presence of the mutualist ant Pheidole bicornis. When ants are present, the plant produces 30 times as many food bodies as control plants. Similar effects had previously been reported for other types of food bodies (Carroll and Janzen, 1973). In P. cenocladum, a clerid beetle exploits this relationship. Their larvae are also able to stimulate food body production in the absence of the ants (Letoumeau, 1990). [Pg.45]

Dejean, A., Kenne, M. and Moreau, C. S. (2007). Predatory abilities favour the success of the invasive ant Pheidole megacephala in an introduced area../. Appl. Entomol., 131, 625-629. [Pg.316]

Skatole, 3-methyl indole (XXIII), is a major constituent in the hypertrophied poison gland of soldiers of the myrmicine Pheidole fallax (25) and of other Pheidole species as well (24). ... [Pg.402]

New 2,6-dialkylated piperidines (207-210) have been isolated as cis/trans mixtures from the ant venom of Monomorium delagoense [487], Their structures were determined using MS, catalytic hydrogenation to the hydrocarbons, and methoxymercuration-demercuration followed by MS analysis. The structures of 207-209 were confirmed by synthesis of the cis/trans mixtures from the corresponding dialkyl pyridines. The major venom component, cis/trans 207, displayed potent insecticial activity against Reticulitermes worker termites (LD50 = 150 pg/g termite). In addition, 207 was a potent repellent for the ants Pheidole and Iridomyrmex [487],... [Pg.250]

Queenright (queen-containing) colonies of 10 species of ants, belonging to two major subfamilies, were utilized for repellency studies. Members of the subfamily Myrmicinae included Solenopsis invicta, Crematogaster ashmeadi. Pheidole dentata, Monomorium minimum. M. viridum and pharaonis. The subfamily Dolichoderinae was represented by Iridomyrmex pruinosus, I. humilis. Tapinoma sessile, and T melanocephalum. Whereas S. invicta and the Monomorium species have been demonstrated to synthesize alkaloid-rich venoms (36, ), these nitrogen... [Pg.20]

HOlldobler, B. and MOglich, M. (1980) The foraging system of Pheidole militicida (Hymenoptera Formicidae). Insectes Sociaux, 27, 237-64. [Pg.107]

Enlarged pygidial glands are also found in a few species outside the Dolichoderinae and Aneuretinae (Kugler, 1978). This gland in Pheidole biconstricta produces a two-phase secretion one comprises volatile material and is repellent... [Pg.433]

Workers of Pheidole dentata can evidently recognize one of their major enemies, Solenopsis invicta, since a single Solenopsis worker will elicit a specific alarm-recruitment behavior. In this case, compounds in both the venom and on the body surface of the Solenopsis provide cues for the recognition (Wilson, 1975). [Pg.444]

Many species utilizing trunk-trails employ mass recruitment, including species of Pogonomyrmex (HOlldobler, 1976), Pheidole (Hdlldobler and... [Pg.450]

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