Beetle, Khapra

Tribolium confusum Jacqueline du Val Trogoderma granarium Everts confused flour beetle khapra beetle adult larva, adult FI, GR, T T9, 60... 

Tropical warehouse moth Red legged ham beetle Merchant grain beetle Saw-toothed grain beetle Flour beetles Khapra beetle... 

The Khapra beetle, Trogoderma granrium [169], cannot convert dietary phytosterols to C27-sterol. However, there is an increase in the concentration of cholesterol and campesterol in its tissues relative to the dietary concentrations of these sterols, presumably as a result of selective uptake [170]. 

Several clues indicate the presence of insect infestation in stored foods (Table IV). The presence of eggs of pulse beetles such as Callosobruchus spp. can be easily seen in infested pulses with the naked eye. Similarly, the exit holes of internal infesters such as Sitophilus spp., R. dominica, Proste-phanus truncatus, and S. cerealella are clearly visible in infested food grains. In the case of khapra beetle (T. granarium) infestation, the exuviae of the larvae are indicators of the presence of the pest. Infestation by moth pests including E. cautella, Plodia interpunctella, and Corcyra cephalonica is... 

Barak, A.V. 1989. Development of a new trap to detect and monitor Khapra beetle. Trogoderma granarium. J. Econ. Entomol. 82, 1470-1477. 

Coleoptera. Sterol metabolism studies with another important stored products pest, the khapra beetle, Trogoderma granarium, revealed another phytophagous Insect that is unable to dealkylate and convert C28 and C29 phytosterols to cholesterol (23). Similar results were obtained whether a diet consisting of cracked wheat and brewer s yeast or an artificial diet coated with radiolabeled sterols was used (24). There was some selective uptake of cholesterol from tFe dietary sterols, as indicated by an enrichment of cholesterol in the pupal sterols 1.2% of total), compared to the dietary sterols (0.5% of total). Unlike the previously discussed stored product coleopteran pests, T. confusum and T. castaneum, both of which had high levels of 7-dehycTrochoiesterol, Tfo 7-dehydrocholesterol could be identified in the sterols from the khapra beetle. 

The khapra beetle, T. granarlum, inhabits an environment more similar to that of the confused flour beetle than to the usual environment of other members of the family Dermestidae to which the khapra beetle belongs. However, with respect to utilization of dietary sterols, the khapra beetle Is more similar to other dermestids such as the hide beetle, Dermestes maculatus, (31) which usually feeds on animals or animal products rather than plant derived material. Apparently, the khapra beetle has not had to alter Its sterol metabolism to adapt to living In Its stored product environment. It will be of Interest to examine the ecdysterolds of the khapra beetle to see If the synthesis of molting hormones In this species has been modified to utilize other than a C27 sterol as an ecdysterold precursor. 

C,7H320, Mr 252.4, liquid. Sexual pheromone of female khapra beetles (Trogoderma granarium) and other Trogoderma species belonging to the Dermes-tidae. Both the (Z)-form bp. 127-128 °C (84.5 Pa), [alo -5.94° (CHClj) and the ( )-form (bp. 127-128°C (108 Pa), d -4.72° (diethyl ether) are used by the various species. 

Me ester [25227-40-1 ]. Sex pheromone for the Khapra beetle Trogoderma inclusum. Also weak attractant for T. granarium. 

Sex pheromone of the Khapra beetle (Trogoderma inclusum) and T. granarium. 

Finger, A., Heller, D. and Shulov, A. (1965) Olfactory response of the Khapra beetle Trogoderma granarium) larva to factors from larvae of the same species. Ecology, 46, 542-3. 

Levinson, H. Z., and A. R. Bar Ilan Olfactory and tactile behavior of the khapra beetle, Trogoderma granarium, with special reference to its assembling scent. J. Insect Physiol. 16,561—572(1970). 

---