By David V. Alford
A whole figuring out of the biology and existence histories of pest species is essential for all these interested in crop construction and crop defense. this crucial new name offers finished assurance of significant insect and mite pest species, basically in Northern Europe. Textbook of Agricultural Entomology is commonly divided into elements. the 1st half covers the exterior and inner beneficial properties of the key insect and mite pest households, whereas the second one half presents designated descriptions of significant pest species together with info on existence historical past levels (vital info whilst contemplating keep an eye on tools) and the plants which those species assault.
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Extra resources for A Textbook of Agricultural Entomology
24. Family CURCULIONIDAE (weevils) (p. ) 25. The main family of weevils; adults with geniculate antennae and a very long scape (Fig. 78b): rostrum variable in form, sometimes exceedingly long; body often clothed in scale-like hairs. EXAMPLES: Anthonominae - Anthonomus pomorum (apple blossom weevil); Brachyderinae Philopedon plagiatus (sand weevil); Ceuthorhynchinae - Ceutorhynchus assimilis (cabbage seed weevil); Otiorhynchinae - Otiorhynchus sulcatus (vine weevil), Phyllobius pyri (common leaf weevil); Sitoninae - Sitona lineatus (pea & bean weevil).
39), Cu1 and Cu2 veins usually noticeably divergent. EXAMPLES: Cinara pilicornis (brown spruce aphid), Maculolachnus submacula (rose 18. Family DREPANOSIPHIDAE Aphids with the terminal process of the antennae of variable length; siphunculi usually stumpy or broadly conical but sometimes pore-like or long and swollen; cauda knob-like or rounded; subanal plate prominent, often divided into two lobes (Fig. 38); Rs vein of forewing present. EXAMPLES: Eucallipterus tiliae (lime leaf aphid), Phyllaphis fagi (beech aphid).
67); antennae indistinctly clubbed and often filiform. Often predatory but some species associated with stored farm products. EXAMPLE: Cryptolestes spp. (grain beetles). 14. Family SILVANIDAE (flat grain beetles) Essentially similar to members of the family Cucujidae but antennae clubbed and the third tarsal segment lobed beneath. EXAMPLES: Ahasverus advena (foreign grain beetle); Oryzaephilus surinamensis (sawtoothed grain beetle). 12. Family NITIDULIDAE (p. ) A large and varied family of mainly small beetles; elytra typically shorter than abdomen, with 5 The number of tarsal segments on the foreleg, midleg and hindleg, respectively.