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  • 1
    Electronic Resource
    Electronic Resource
    A comparative study of the ground nests of Centris flavifrons and Centris aethiocesta (Hymenoptera: Anthophoridae) (1988)
    Springer
    Entomologia experimentalis et applicata 49 (1988), S. 181-187 
    Details
    ISSN: 1570-7458
    Keywords: bee nests ; Centris ; Anthophoridae
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The nests of Centris aethiocesta Snelling and Centris flavifrons (Friese) are described and compared to published accounts of C. flavofasciata. The three are ground nesting solitary bee species in Costa Rica. Centris aethiocesta, like previously published C. flavofasciata, prefers the beach strand, although C. aethiocesta nests in more shaded areas. Centris flavifrons nests are constructed in the dry forest savanna, often in small depressions. All three construct one cell per tunnel, with the tunnel of completed nests filled with soil. Tunnels of completed nests of C. aethiocesta are unbranched; tunnels of C. flavifrons have 6 to 10 side tunnels also filled with soil, while only one side tunnel is published for C. flavofasciata.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00188251
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  • 2
    Electronic Resource
    Electronic Resource
    Change in mandibular and mesosomal gland contents of maleXylocopa micans (Hymenoptera: Anthophoridae) associated with mating system (1990)
    Springer
    Journal of chemical ecology 16 (1990), S. 1877-1885 
    Details
    ISSN: 1573-1561
    Keywords: Xylocopa micans ; Hymenoptera ; Anthophoridae ; mesosomal glands ; mandibular glands ; hydrocarbons ; fatty acid esters ; territoriality ; mating system
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Males ofXylocopa micans employ two mating systems in south-central Texas. They defend territories around flowering wisteria and redbud in March and April, and they maintain nonresource-based or landmark territories in July and August. Mandibular and mesosomal gland contents (analyzed by GC-MS) are different in bees employing the two mating systems. Mandibular glands contain only straight-chain hydrocarbons in bees defending floral resources, but include ethyl oleate in bees defending landmark territories. Mesosomal glands contain saturated, mono- and diunsaturated straight-chain hydrocarbons and methyl and ethyl esters of long-chain fatty acids. The major ethyl ester, ethyl oleate, comprises only 1.1% of mesosomal gland contents in bees defending floral resources but comprises 39.7% of gland content of bees defending landmark territories. These findings are discussed relative to the proposed sex pheromone function ofXylocopa gland secretions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01020501
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