Figures 2.5


The cuticular pores and ducts on the venter of an adult female of the citrus mealybug, Planococcus citri (Hemiptera: Pseudococcidae).
Figures 2.5. The cuticular pores and ducts on the venter of an adult female of the citrus mealybug, Planococcus citri (Hemiptera: Pseudococcidae).

Enlargements depict the ultrastructure of the wax glands and the various wax secretions (arrowed) associated with three types of cuticular structure: (a) a trilocular pore; (b) a tubular duct; and (c) a multilocular pore. Curled filaments of wax from the trilocular pores form a protective body-covering and prevent contamination with their own sugary excreta, or honeydew; long, hollow, and shorter curled filaments from the tubular ducts and multilocular pores, respectively, form the ovisac. (After Foldi 1983; Cox 1987)

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  A specialized worker, or replete, of the honeypot ant, Camponotus inflatus (Hymenoptera: Formicidae), which holds honey in its distensible abdomen and acts as a food store for the colony.
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  The four basic types of cuticular protuberances: (a) a multicellular spine; (b) a seta, or trichoid sensillum; (c) acanthae; and (d) microtrichia.