Nigel Cattlin / Diamondback moth (Plutella xylostella) caterpillars, ubiquitous and important pest, feeding on Cabbage (Brassica oleracea) leaf, UK.

Nigel Cattlin / Diamondback moth (Plutella xylostella) caterpillars, ubiquitous and important pest, feeding on Cabbage (Brassica oleracea) leaf, UK.

Nigel Cattlin / Severe grass weed infestation of Couch grass (Elymus repens) in crop of Primo cabbages (Brassica oleracea), Berkshire, UK. September.

Nigel Cattlin / Severe infestation of broad-leaved weeds in young Sugar beet (Beta vulgaris) crop, Shropshire, England, UK. June.

Nigel Cattlin / Bladder pod midge (Dasineura brassicae) larvae in damaged Oilseed rape / Canola (Brassica napus) seed pod.

Nigel Cattlin / Barberry aphid (Liosomaphis berberidis) infestation on young shoots of Berberis (Berberis thunbergii var atropurpureum), Berkshire, UK, June.

Nigel Cattlin / Barberry aphid (Liosomaphis berberidis) infestation on young shoots of Berberis (Berberis thunbergii var atropurpureum), Berkshire, UK, June.

Nigel Cattlin / Barberry aphid (Liosomaphis berberidis) infestation on young shoots of Berberis (Berberis thunbergii var atropurpureum), Berkshire, UK, June.

Nigel Cattlin / Barberry aphid (Liosomaphis berberidis) infestation on young shoots of Berberis (Berberis thunbergii var atropurpureum), Berkshire, UK, June.

Nigel Cattlin / Barberry aphid (Liosomaphis berberidis) infestation on young shoots of Berberis (Berberis thunbergii var atropurpureum), Berkshire, UK, June.

Nigel Cattlin / Citrus mealybug (Planococcus citri) infestation on the leaves and stem of a bougainvillea (Nyctaginaceae) grown on a conservatory, Berkshire, UK, April.

Nigel Cattlin / Glasshouse mealybug (Pseudococcus viburni) infestation on the stem of a glasshouse tomato (Solanum lycopersicum) crop, Berkshire, UK, October.

Nigel Cattlin / Glasshouse mealybug (Pseudococcus viburni) infestation on the stem of a glasshouse tomato (Solanum lycopersicum) crop, Berkshire, UK, October.

Jeff Foott / Jasper National Park information board with map; dead Pine (Pinus sp) trees killed by Mountain pine beetle (Dendroctonus ponderosae) in background. Warmer weather due to climate change makes survival...

Jeff Foott / Pine (Pinus sp) forest with dead trees killed by Mountain pine beetle (Dendroctonus ponderosae), snow capped mountains in background. Warmer weather due to climate change makes survival of the beetle...

Jeff Foott / Pine (Pinus sp) forest with dead trees killed by Mountain pine beetle (Dendroctonus ponderosae), below snow capped mountain. Warmer weather due to climate change means the beetle is more likely to sur...

Ingo Arndt / Unoccupied or empty Honey bee (Apis mellifera) combs infested by Lesser wax moth (Achroia grisella) larvae which leave behind silk tunnels and frass as they move through and feed on the honeycomb, Ger...

Nigel Cattlin / Barley grain weevil (Sitophilus granarius) and severely damaged barley grains from an infested grain store

Nigel Cattlin / Grain aphid (Sitobion avenae) severe infestion of pest aphids on green unripe ears of winter wheat, England, UK. June

Nigel Cattlin / Grain aphid (Sitobion avenae) severe infestion of pest aphids on green unripe ears of winter wheat, England, UK. June

Nigel Cattlin / Pea aphid (Acyrthosiphon pisum) a severe aphid infestation on a pea crop but naturally heavily parasitized by Aphidius wasps

Nigel Cattlin / Pea aphid (Acyrthosiphon pisum) a severe aphid infestation on a pea crop but naturally heavily parasitized by Aphidius wasps

Nigel Cattlin / Colony of grain aphids (Sitobion avenae) of various wingless stages on the leaf oif a barley crop plant

Nigel Cattlin / Photomicrograph black cherry aphid or cherry blackfly (Myzus cerasi) infestation on wild cherry leaf, Berkshire, England, UK, May

Nigel Cattlin / Photomicrograph Black cherry aphid / Cherry blackfly (Myzus cerasi) infestation on wild cherry leaf, Berkshire, England, UK, May

Nigel Cattlin / Photomicrograph Black cherry aphid / Cherry blackfly (Myzus cerasi) infestation on wild cherry leaf, Berkshire, England, UK, May

Nigel Cattlin / Lupin aphids (Macrosiphum albifrons) leaf and stem infestation on a tree lupin (Lupinus arboreus) in flower, Berkshire, England, UK, May

Nigel Cattlin / Lupin aphids (Macrosiphum albifrons) leaf and stem infestation on a tree lupin (Lupinus arboreus) in flower, Berkshire, England, UK, May

Nigel Cattlin / Common red soldier beetle (Rhagonycha fulva) gathering, feeding and mating on a hogweed flower in summer, Berkshire, England, UK, July

Nigel Cattlin / Rose aphid (Macrosiphum rosae) infestation on a Rose (Rosa spp), bud, Berkshire, England, UK, June

Nigel Cattlin / Elder aphid (Aphis sambuci) infestation on the young shoot of ornamental Elder (Sambucus sp) in garden. Berkshire, England, UK. April.

Nigel Cattlin / Lupin aphid (Macrosiphum albifrons) infestation on stem and apical shoots of young Tree lupin (Lupinus arboreus). Berkshire, England, UK. May.

Nigel Cattlin / Glasshouse-potato aphid (Aulacorthum solani) colony on Hibiscus (Hibiscus sp) flower bud, house plant.

Nigel Cattlin / Glasshouse-potato aphid (Aulacorthum solani) colony on Hibiscus (Hibiscus sp) flower bud, house plant.

Nigel Cattlin / Glasshouse / Tuber mealybugs (Pseudococcus viburni) on stem of house plant, close up. UK, January.

Nigel Cattlin / Glasshouse / Tuber mealybugs (Pseudococcus viburni) on stem of house plant, close up. UK, January.

Nigel Cattlin / Horse chestnut leaf miner (Cameraria ohridella) larval damage to Horse chestnut (Aesculus hippocastanum) leaves. Berkshire, England, UK. August.

Nigel Cattlin / Mealy cabbage aphid (Brevicoryne brassicae) infestation on Brassica stem. Berkshire, England, UK. June.

Nigel Cattlin / Mealy cabbage aphid (Brevicoryne brassicae) infestation on Brassica stem. Berkshire, England, UK. June.

Nigel Cattlin / Mealy cabbage aphid (Brevicoryne brassicae) infestation on secondary host plant Hedge mustard (Alliaria petiolata). Berkshire, England, UK. June.

Nigel Cattlin / Potato aphid (Macrosiphum euphorbiae) infestation on Tulip (Tulipa sp) petal. Berkshire, England, UK. May.

Nigel Cattlin / Corky brown damage to Pear (Pyrus communis) fruit possibly caused by early Eriophyid (Eriophyidae) blister mite infestation. Berkshire, England, UK. September.

Nigel Cattlin / Large white butterfly (Pieris brassicae) first or second instar caterpillars and empty egg case on Cabbage (Brassicaceae) leaf. Berkshire, England, UK. August.

Nigel Cattlin / Large white butterfly (Pieris brassicae) first or second instar caterpillars and empty egg case on Cabbage (Brassicaceae) leaf. Berkshire, England, UK. August.

Nigel Cattlin / Glasshouse mealybug (Pseudococcus viburni) infestation on Bougainvillea (Bougainvillea sp) peduncle in conservatory, UK. August.

Nigel Cattlin / Foxglove aphid (Aulacorthum solani) infestation on Bougainvillea (Bougainvillea sp) flower in conservatory, UK. August.

Nigel Cattlin / Large cabbage white (Pieris brassicae) caterpillars feeding on Broccoli (Brassica oleracea) leaf. Berkshire, England, UK. August.

Nigel Cattlin / Large cabbage white (Pieris brassicae) caterpillars on Broccoli (Brassica oleracea) leaf. Berkshire, England, UK. August.