Humidity Response of Adult Oryzaephilus surinamensis (Coleoptera: Cucujidae) 1

1972 ◽  
Vol 1 (2) ◽  
pp. 221-227 ◽  
Author(s):  
Richard T. Arbogast ◽  
Margaret Carthon
1972 ◽  
Vol 50 (8) ◽  
pp. 1147-1153 ◽  
Author(s):  
Richard T. Arbogast ◽  
Richard M. Roppel ◽  
Margaret Carthon

Two types of sense organs are present on the antennae of adult sawtoothed grain beetles, Oryzaephilus surinamensis. Sensilla chaetica are present on all the antennal segments and sensilla basiconica are present on the three segments which compose the antennal club. The intensity of the beetles' humidity response was correlated with the number of sensilla basiconica remaining after amputation of various numbers of antennal segments. On the basis of their morphology and the results of the amputation experiments, it is concluded that at least some of the sensilla basiconica function in hygroreception.


1970 ◽  
Vol 102 (8) ◽  
pp. 1041-1047 ◽  
Author(s):  
S. R. Loschiavo ◽  
L. B. Smith

AbstractA national survey shows that the merchant grain beetle, Oryzaephilus mercator Fauvel, has been present in Canada since at least 1925 and that it has become firmly established as a household pest of processed cereal products preferably of high oil content, but has not been reported from stored grain. A related species, the saw-toothed grain beetle, Oryzaephilus surinamensis (L.), infests both stored grain and processed cereal products. Illustrations are provided to show the morphological characters by which the two species may be recognized and separated.


2018 ◽  
Vol 34 (2) ◽  
pp. 648-654 ◽  
Author(s):  
Alexey Vasiliev ◽  
Andrey Varfolomeev ◽  
Ivan Volkov ◽  
Pavel Arsenov ◽  
Alexey Efimov ◽  
...  

1977 ◽  
Vol 60 (5) ◽  
pp. 1223-1226
Author(s):  
Alan R Olsen

Abstract Male saw-toothed grain beetles (Oryzaephilus surinamensis) and merchant grain beetles (O. mercator) were dissected, and the major differences in their genitalia were reviewed. Differences in the morphology of the internal sac, setae of the lateral lobes, chitinous rods of the median lobe, and setae on the eighth sternite are illustrated with photomicrographs. The only other difference between the 2 species is the outline of the adult head. The dissection procedure is described briefly.


1968 ◽  
Vol 46 (3) ◽  
pp. 469-473 ◽  
Author(s):  
G. R. F. Davis

Oryzaephilus surinamensis (L.), reared on three holidic diets at 32 ± 2 °C and 75 ± 5% relative humidity, required a dietary source of phenylalanine, irreplaceable by dietary tyrosine. This insect also required a dietary source of tyrosine for normal rate of development. On diets containing 1.0 mg of phenylalanine per gram, it used supplementary glycine more effectively than supplementary tyrosine as a replacement for phenylalanine omitted from the diet. On diets containing 1.0 mg of tyrosine per gram, it used supplementary phenylalanine more effectively than glycine. Emergent adults weighed less with 1.0 mg of dietary phenylalanine per gram than with higher concentrations. Adult weight was unaffected by decreasing concentrations of dietary tyrosine.


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