Labial glands pheromones

The major work on the labial gland pheromones has been done on bumble bees, namely 25 species in Bombus and Psithyrus. From the cephalic extracts, these... 

Territorial Pheromones. Males of many species of bumblebees mark selected sites with labial gland products that attract both males and females. These territorial mating spots are "perfumed" with a wide variety of acyclic compounds that appear... 

Agren, L., Cederberg, B. and Svensson, B. G. (1979) Changes with age in ultrastructure and pheromone content of male labial glands in some bumble bee species (Hymenoptera, Apidae). Zooriy 7, 1-14. 

The gene encoding PBAN was first characterized from H. zea and B. mori [134,137,138,195]. The cDNA was found to encode the 33 amino acid PBAN plus four additional peptides with a common C-terminal FXPRL sequence motif, including that of the diapause hormone of B. mori (Fig. 6). Three additional peptides with the common C-termini and sequence homology to those of H. zea and B. mori have been deduced from cDNA isolated from pheromone glands of several other moths [194,196-200]. Studies conducted to find the post-translational processed peptides indicated that PBAN was found to a greater extent in the mandibular and maxillary clusters than in the labial cluster of neurons... 

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