the colorado potato beetle, leptinotarsa decemlineata (say), is a destructive insect pest of potato and other solanaceous crops. the type, number and distribution of sensory receptors on the labio-maxillary complex of larvae were studied using the scanning and transmission electron microscopy. a total of 32 sensilla were identified on the maxillary and labial palps that were categorized in thre...

A high-quality cDNA library was constructed from female and male antenna of the longhorned beetle, Batocera horsfieldi (Hope) (Coleoptera: Cerambycidae), a serious pest of Populus (Salicales: Salicaceae). The titer was approximately 2.37 × 106 pfu/mL, and this complies with the test requirement. From the libraries, 692 clones were selected randomly, sequenced, and further analyzed, and the reco...

the chrysomelid species leptinotarsa decemlineata (say), commonly known as colorado potato beetle (cpb), is an important pest of potato and other solanaceous crops. the effects of precocene i and ii, juvenile hormone inhibitors, on morphological characteristics of the chemoreceptor organs of antennae and mouthparts of l. decemlineata larvae were studied in the laboratory. different doses of pre...

Bungona illiesi (Lugo-Ortiz & McCafferty) n.comb. was described from a single specimen collected in northern Queensland, Australia, as a species of Cloeodes Traver. The distinguishing characteristics of a minute maxillary palp, the absence of spination on the mandibles between the mola and prostheca, narrow-elongate gills, and medially expanded labial palps were later found to occur in Bungona ...

A comparative SEM study of palp sensory surfaces in 25 caddisfly species representing seven families reveals types sensilla: long trichoid, blunt chaetoid, campaniform, mushroom-like pseudoplacoid, petaloid, thick basiconic and thin sensilla. Long trichoid chaetoid sensilla are present on all segments both pairs palps. First second maxillary palps bear groups sclerotised their medial surface. O...

Abstract Lacewings (Neuroptera) have predatory larvae with highly specialised mouthparts. Larvae of many groups within Neuroptera are well represented as fossils preserved in ambers; however, some less often reported the literature. Here we report such a rare case, larva group Hemerobiidae, an aphidlion, piece Eocene Baltic amber (about 40 million years old). It is together three possible prey ...

The Tribolium castaneum homeotic gene maxillopedia (mxp) is the ortholog of Drosophila proboscipedia (pb). Here we describe and classify available mxp alleles. Larvae lacking all mxp function die soon after hatching, exhibiting strong transformations of maxillary and labial palps to legs. Hypomorphic mxp alleles produce less severe transformations to leg. RNA interference with maxillopedia doub...

Glucose is a universal phagostimulant in many animal species, including the cockroach Blattella germanica. However, some natural populations of B. germanica have been found that are behaviorally deterred from eating glucose. In dose-response studies, glucose was a powerful phagostimulant for wild-type cockroaches, but it strongly deterred feeding in a glucose-averse strain. Both strains, howeve...

Mouthparts are closely associated with the feeding behavior and feeding habits of insects. The features of mouthparts frequently provide important traits for evolutionary biologists and systematists. The short-faced scorpionflies (Panorpodidae) are distinctly different from other families of Mecoptera by their extremely short rostrum. However, their feeding habits are largely unknown so far. In...

Specialized insect mouthparts, such as those of Drosophila, are derived from an ancestral mandibulate state, but little is known about the developmental genetics of mandibulate mouthparts. Here, we study the metamorphic patterning of mandibulate mouthparts of the beetle Tribolium castaneum, using RNA interference to deplete the expression of 13 genes involved in mouthpart patterning. These data...