| 5475434 |
armyworm |
Mythimna unipuncta |
True armyworm crawling on a corn leaf. They tend to hide down in the corn whorl. |
| 5006081 |
fall armyworm |
Spodoptera frugiperda |
Illustration by Mary Benson |
| 5475433 |
black cutworm |
Agrotis ipsilon |
Black cutworm larvae instar head capsule measurement gauge.? Instar 4 and larger can cut young corn stalks. |
| 5475430 |
black cutworm |
Agrotis ipsilon |
Damage symptoms. Black cutworm larvae may feed on young corn, and pull the stalk down into the ground from below. Damage shows up as gaps in the normal corn rows. Stalks may also be simply cut off and fall to the side.? |
| 5475431 |
black cutworm |
Agrotis ipsilon |
Black cutworm larvae crawling in debris in a corn field. |
| 5475432 |
black cutworm |
Agrotis ipsilon |
Black cutworm larvae will curl into a tight "C" shape when disturbed.
Host: Zea mays |
| 5471275 |
differential grasshopper |
Melanoplus differentialis |
|
| 5471276 |
differential grasshopper |
Melanoplus differentialis |
|
| 5465682 |
black cutworm |
Agrotis ipsilon |
|
| 5465684 |
black cutworm |
Agrotis ipsilon |
|
| 5465686 |
black cutworm |
Agrotis ipsilon |
|
| 5465687 |
black cutworm |
Agrotis ipsilon |
|
| 5465893 |
spotted cucumber beetle |
Diabrotica undecimpunctata howardi |
|
| 5465911 |
western corn rootworm |
Diabrotica virgifera virgifera |
|
| 5465865 |
Japanese beetle |
Popillia japonica |
|
| 5465894 |
spotted cucumber beetle |
Diabrotica undecimpunctata howardi |
|
| 5465895 |
spotted cucumber beetle |
Diabrotica undecimpunctata howardi |
|
| 5465902 |
northern corn rootworm |
Diabrotica barberi |
|
| 5465882 |
Japanese beetle |
Popillia japonica |
|
| 5465880 |
Japanese beetle |
Popillia japonica |
|
| 5465881 |
Japanese beetle |
Popillia japonica |
|
| 5465874 |
Japanese beetle |
Popillia japonica |
|
| 5465875 |
Japanese beetle |
Popillia japonica |
|
| 5465876 |
Japanese beetle |
Popillia japonica |
|
| 5465877 |
Japanese beetle |
Popillia japonica |
|
| 5465878 |
Japanese beetle |
Popillia japonica |
|
| 5465879 |
Japanese beetle |
Popillia japonica |
|
| 5465873 |
Japanese beetle |
Popillia japonica |
|
| 1673006 |
fall armyworm |
Spodoptera frugiperda |
mature ear and leaf damage |
| 1233194 |
spotted cucumber beetle |
Diabrotica undecimpunctata howardi |
|
| 1673034 |
fall armyworm |
Spodoptera frugiperda |
and damage to ear |
| 1673007 |
fall armyworm |
Spodoptera frugiperda |
larva in whorl and damage |
| 0177048 |
Japanese beetle |
Popillia japonica |
Adult clustered on the tassel on a maize cob |
| 2722005 |
cutworms, loopers, owlet moths, and underwings |
|
and larva |
| 1327073 |
fall armyworm |
Spodoptera frugiperda |
|
| 4709020 |
grasshoppers |
|
and damage |
| 0177088 |
fall armyworm |
Spodoptera frugiperda |
Maize ear damaged by larvae |
| 1243169 |
western corn rootworm |
Diabrotica virgifera virgifera |
|
| 1233191 |
spotted cucumber beetle |
Diabrotica undecimpunctata howardi |
|
| 2722009 |
fall armyworm |
Spodoptera frugiperda |
and several larvae feeding |
| 2722006 |
black cutworm |
Agrotis ipsilon |
and damage |
| 1235135 |
fall armyworm |
Spodoptera frugiperda |
|
| 1233192 |
spotted cucumber beetle |
Diabrotica undecimpunctata howardi |
|
| 5361045 |
black cutworm |
Agrotis ipsilon |
Black cutworm larva (Agrotis ipsilon) lying next to the damage it caused to a young corn plant. |
| 5361213 |
armyworms |
Spodoptera spp. |
Original description: "Armyworms on leaf midrib." |
| 5367881 |
flea beetles |
Altica spp. |
|
| 1263061 |
fall armyworm |
Spodoptera frugiperda |
|
| 1263062 |
fall armyworm |
Spodoptera frugiperda |
Damage to corn ear |
| 1263063 |
fall armyworm |
Spodoptera frugiperda |
Female |
| 0725085 |
western corn rootworm |
Diabrotica virgifera virgifera |
Adult of Diabrotica virgifera. |
| 0725086 |
western corn rootworm |
Diabrotica virgifera virgifera |
Damage of Diabrotica virgifera (lodged maize). |
| 0725087 |
western corn rootworm |
Diabrotica virgifera virgifera |
Larvae Diabrotica virgifera. |
| 0725088 |
western corn rootworm |
Diabrotica virgifera virgifera |
Maize root system damaged by Diabrotica virgifera (left). Right: little to no visible damage. |
| 5367919 |
spotted cucumber beetle |
Diabrotica undecimpunctata howardi |
adults in copulo |
| 5357050 |
western corn rootworm |
Diabrotica virgifera virgifera |
The two beetles closest to the tip of this ear of corn are adult western corn rootworms (Diabrotica virgifera virgifera). |
| 5361241 |
leafminer fly |
Liriomyza spp. |
Signs and damage caused by the corn blotch leafminer (Liriomyza sp.). |
| 5361240 |
alfalfa webworm |
Loxostege cereralis |
Larva of the alfalfa webworm (Loxostege cereralis) on field corn. |
| 5361210 |
fall armyworm |
Spodoptera frugiperda |
Two larvae of the fall armyworm (Spodoptera frugiperda) on corn. |
| 5361041 |
western corn rootworm |
Diabrotica virgifera virgifera |
Larva of the western corn rootworm (Diabrotica virgifera virgifera). |
| 5361236 |
spotted cucumber beetle |
Diabrotica undecimpunctata howardi |
Damage to corn roots due to feeding by the southern corn rootworm, Diabrotica undecimpunctata howardi. |
| 5361212 |
armyworm |
Mythimna unipuncta |
Damage to field corn caused by the armyworm. |
| 5361239 |
western corn rootworm |
Diabrotica virgifera virgifera |
Damage to corn silks due to feeding by adult western corn rootworm beetles (Diabrotica virgifera virgifera). |
| 5361238 |
western corn rootworm |
Diabrotica virgifera virgifera |
Field of corn showing signs of lodging due to damage caused by the western corn rootworm (Diabrotica virgifera virgifera). |
| 5361237 |
western corn rootworm |
Diabrotica virgifera virgifera |
Larva of the western corn rootworm (Diabrotica virgifera virgifera) on roots of a corn plant. |
| 5361235 |
northern corn rootworm |
Diabrotica barberi |
Side-by-side comparison of adult specimens of the southern corn rootworm (Diabrotica undecimpunctata howardi), northern corn rootworm (D. barberi) and western corn rootworm (D. virgifera virgifera). |
| 5361233 |
spotted cucumber beetle |
Diabrotica undecimpunctata howardi |
Adult southern corn rootworm (a.k.a. spotted cucumber beetle), Diabrotica undecimpunctata howardi. |
| 5360694 |
western corn rootworm |
Diabrotica virgifera virgifera |
Damage to the leaf of a corn plant, caused by feeding of adult corn rootworm beetles (Diabrotica virgifera virgifera). |
| 5362504 |
Colorado potato beetle |
Leptinotarsa decemlineata |
Colorado potato beetle (Leptinotarsa decemlineata) and damage on a volunteer potato plant growing in a field of corn. |
| 5319011 |
Argentine stem weevil |
Listronotus bonariensis |
Adult colour variable from light grey-brown to dark-brown or black. Elongate (3 mm long), compact and hard bodied. Pronounced snout and characteristic white pronotal stripes. The body is covered with numerous hairs and white wax-like scales which tend to hold dust, producing a dirty-grey appearance (Ferro, 1976); Australia: Melbourne- Jan 1973, ex light trap. |
| 5319012 |
Argentine stem weevil |
Listronotus bonariensis |
elytra; Australia: Melbourne- Jan 1973, ex light trap |
| 5319013 |
Argentine stem weevil |
Listronotus bonariensis |
Specimen collected in Australia: Melbourne- Jan 1973, ex light trap |
| 5319014 |
Argentine stem weevil |
Listronotus bonariensis |
Specimen collected in Australia: Melbourne- Jan 1973, ex light trap |
| 5319015 |
Argentine stem weevil |
Listronotus bonariensis |
The body is covered with numerous hairs and white wax-like scales which tend to hold dust, producing a dirty-grey appearance (Ferro, 1976); Australia: Melbourne- Jan 1973, ex light trap |
| 5319016 |
Argentine stem weevil |
Listronotus bonariensis |
Specimen from Australia: Melbourne- Jan 1973, ex light trap |
| 1481060 |
banded cucumber beetle |
Diabrotica balteata |
on corn silks in Honduras |
| 1481075 |
garden armyworm |
Spodoptera latifascia |
on corn in Honduras |
| 1481078 |
fall armyworm |
Spodoptera frugiperda |
cutworm feeding behavior on corn in Honduras |
| 1481126 |
western corn rootworm |
Diabrotica virgifera virgifera |
|
| 1481155 |
western corn rootworm |
Diabrotica virgifera virgifera |
|
| 1481159 |
corn blotch leafminer |
Agromyza parvicornis |
|
| 1481160 |
alfalfa webworm |
Loxostege cereralis |
|
| 1481166 |
corn flea beetle |
Chaetocnema pulicaria |
|
| 1481171 |
fall armyworm |
Spodoptera frugiperda |
|
| 1481175 |
western corn rootworm |
Diabrotica virgifera virgifera |
|
| 5190020 |
western corn rootworm |
Diabrotica virgifera virgifera |
Collection information: September 04, 1970; Arizona: Coconino Co. |
| 5190021 |
western corn rootworm |
Diabrotica virgifera virgifera |
Collection information: September 04, 1970; Arizona: Coconino Co. |
| 1320015 |
western corn rootworm |
Diabrotica virgifera virgifera |
The adult stage of the western corn rootworm (shown searching for pollen on corn silk) is the target of ARS' first areawide integrated pest management program for corn. |
| 1320022 |
fall armyworm |
Spodoptera frugiperda |
Fall armyworms may grow to only half their normal inch-and-a-half size if the Mir1 gene from corn germplasm lines Mp704 and 708 can be bred into commercial varieties. |
| 1234056 |
western spotted cucumber beetle |
Diabrotica undecimpunctata undecimpunctata |
1540 |
| 1320014 |
western corn rootworm |
Diabrotica virgifera virgifera |
Corn rootworm larva. |
| 1321048 |
western corn rootworm |
Diabrotica virgifera virgifera |
Western corn rootworm larvae (about one-quarter inch long). |
| 1372022 |
spotted cucumber beetle |
Diabrotica undecimpunctata howardi |
|
| 0177086 |
fall armyworm |
Spodoptera frugiperda |
female (left) and male (right). |
| 0177087 |
fall armyworm |
Spodoptera frugiperda |
Normal larva (bottom) and larva of the same age (top) after feeding on resistant corn (Zapalote Chico). |
| 1265145 |
corn flea beetle |
Chaetocnema pulicaria |
and Damage to Leaf |
| 1265146 |
corn flea beetle |
Chaetocnema pulicaria |
|
| 1265147 |
corn flea beetle |
Chaetocnema pulicaria |
|
| 1327106 |
leaf beetle |
|
|
| 1435037 |
spotted cucumber beetle |
Diabrotica undecimpunctata howardi |
|
| 1435038 |
spotted cucumber beetle |
Diabrotica undecimpunctata howardi |
|
| 1435040 |
fall armyworm |
Spodoptera frugiperda |
|
| 0019015 |
grass thrips |
Anaphothrips obscurus |
Host: Iris, grains (rice, wheat, corn), and grasses. Males of A. obscurus are not known; worldwide the species has never been confirmed to be other than parthenogenetic. The females are dimorphic, either fully-winged (macropterous), or short-winged (micropterous or brachypterous). The macropterae are mainly yellow in colour, although the posterior margin of the head has a brown transverse marking, and the anterior tergites are variably shaded with brown; the forewings are slightly yellow, and the distal antennal segments are mainly brown. Micropterous individuals are usually almost clear yellow. The head and pronotum have no long setae, in contrast to most other pest thrips species. The abdominal tergites are completely sculptured medially, and the eighth abdominal tergite has a complete comb along the posterior margin.
Image shows complete comb on 8th abd segment Host and distribution information from Crop Protection Compendium (CPC) and SFO collection Europe, Asia, Africa, Oceania, pacific, Western Hemisphere CPC Damage: Kamm (1971) recorded a 16% reduction in seed yield of bentgrass (Agrostis stolonifera) in Oregon, USA, and added that subsequent damage to the leaves of the plants almost certainly resulted in further yield reduction. In other reports of yield reduction in grasses grown for seed it is clear that A. obscurus is only one of a group of thrips species that are associated with such damage (Zawirska, 1970). Near Beijing in China, Han et al. (1979) noted that A. obscurus caused serious damage to young maize in late spring if large populations had first built up on wheat in spring and then migrated to maize. Rains depressed population size, but drought increased them. |
