| 5490351 |
poplar twiggall fly |
Hexomyza schineri |
Larva exposed in gall |
| 5006066 |
Hessian fly |
Mayetiola destructor |
Illustration by Arthur Cushman |
| 2122049 |
poplar twiggall fly |
Hexomyza schineri |
Galls, Fort Collins, CO. |
| 1398253 |
poplar twiggall fly |
Hexomyza schineri |
Twig galls |
| 5463532 |
Hessian fly |
Mayetiola destructor |
thorax |
| 5463541 |
Hessian fly |
Mayetiola destructor |
forewing female |
| 5463538 |
Hessian fly |
Mayetiola destructor |
|
| 5463539 |
Hessian fly |
Mayetiola destructor |
|
| 5463535 |
Hessian fly |
Mayetiola destructor |
side of head |
| 5463536 |
Hessian fly |
Mayetiola destructor |
thorax side |
| 5463537 |
Hessian fly |
Mayetiola destructor |
thorax side male |
| 5463531 |
Hessian fly |
Mayetiola destructor |
abdomen |
| 5463534 |
Hessian fly |
Mayetiola destructor |
head front |
| 5463529 |
Hessian fly |
Mayetiola destructor |
|
| 5463530 |
Hessian fly |
Mayetiola destructor |
abdomen |
| 5436207 |
Canada thistle stem gall fly |
Urophora cardui |
normal gall (L) and one with winter bird predation (R) |
| 0024027 |
Canada thistle stem gall fly |
Urophora cardui |
in gall |
| 1595465 |
knapweed peacock fly |
Chaetorellia acrolophi |
|
| 1595477 |
knapweed peacock fly |
Chaetorellia acrolophi |
|
| 1595479 |
knapweed peacock fly |
Chaetorellia acrolophi |
|
| 1595480 |
knapweed peacock fly |
Chaetorellia acrolophi |
|
| 1595469 |
knapweed peacock fly |
Chaetorellia acrolophi |
|
| 1595470 |
knapweed peacock fly |
Chaetorellia acrolophi |
|
| 1595471 |
knapweed peacock fly |
Chaetorellia acrolophi |
|
| 1595472 |
knapweed peacock fly |
Chaetorellia acrolophi |
|
| 1595473 |
knapweed peacock fly |
Chaetorellia acrolophi |
|
| 1595474 |
knapweed peacock fly |
Chaetorellia acrolophi |
|
| 1595475 |
knapweed peacock fly |
Chaetorellia acrolophi |
|
| 1595476 |
knapweed peacock fly |
Chaetorellia acrolophi |
|
| 1595466 |
knapweed peacock fly |
Chaetorellia acrolophi |
|
| 1595467 |
knapweed peacock fly |
Chaetorellia acrolophi |
|
| 1595468 |
knapweed peacock fly |
Chaetorellia acrolophi |
|
| 1595464 |
knapweed peacock fly |
Chaetorellia acrolophi |
|
| 1595462 |
knapweed peacock fly |
Chaetorellia acrolophi |
|
| 1595463 |
knapweed peacock fly |
Chaetorellia acrolophi |
|
| 1594066 |
Canada thistle stem gall fly |
Urophora cardui |
|
| 1594064 |
Canada thistle stem gall fly |
Urophora cardui |
|
| 1594065 |
Canada thistle stem gall fly |
Urophora cardui |
|
| 1594063 |
Canada thistle stem gall fly |
Urophora cardui |
|
| 1594062 |
Canada thistle stem gall fly |
Urophora cardui |
|
| 1594061 |
Canada thistle stem gall fly |
Urophora cardui |
|
| 1594060 |
Canada thistle stem gall fly |
Urophora cardui |
|
| 1594059 |
Canada thistle stem gall fly |
Urophora cardui |
|
| 1594058 |
Canada thistle stem gall fly |
Urophora cardui |
|
| 1594057 |
Canada thistle stem gall fly |
Urophora cardui |
|
| 1594056 |
Canada thistle stem gall fly |
Urophora cardui |
|
| 1594055 |
Canada thistle stem gall fly |
Urophora cardui |
|
| 1594054 |
Canada thistle stem gall fly |
Urophora cardui |
|
| 1594053 |
Canada thistle stem gall fly |
Urophora cardui |
|
| 1594052 |
Canada thistle stem gall fly |
Urophora cardui |
|
| 1594051 |
Canada thistle stem gall fly |
Urophora cardui |
|
| 1594050 |
Canada thistle stem gall fly |
Urophora cardui |
|
| 1594048 |
Canada thistle stem gall fly |
Urophora cardui |
|
| 1594047 |
Canada thistle stem gall fly |
Urophora cardui |
|
| 1594046 |
Canada thistle stem gall fly |
Urophora cardui |
|
| 1594045 |
Canada thistle stem gall fly |
Urophora cardui |
|
| 1594044 |
Canada thistle stem gall fly |
Urophora cardui |
|
| 1594043 |
Canada thistle stem gall fly |
Urophora cardui |
|
| 1594042 |
Canada thistle stem gall fly |
Urophora cardui |
|
| 1594041 |
Canada thistle stem gall fly |
Urophora cardui |
|
| 1594040 |
Canada thistle stem gall fly |
Urophora cardui |
|
| 1594039 |
Canada thistle stem gall fly |
Urophora cardui |
|
| 1594038 |
Canada thistle stem gall fly |
Urophora cardui |
|
| 1594037 |
Canada thistle stem gall fly |
Urophora cardui |
|
| 1594036 |
Canada thistle stem gall fly |
Urophora cardui |
|
| 1594035 |
Canada thistle stem gall fly |
Urophora cardui |
|
| 1594034 |
Canada thistle stem gall fly |
Urophora cardui |
|
| 1594033 |
Canada thistle stem gall fly |
Urophora cardui |
|
| 1594032 |
Canada thistle stem gall fly |
Urophora cardui |
|
| 1594031 |
Canada thistle stem gall fly |
Urophora cardui |
|
| 5463533 |
Hessian fly |
Mayetiola destructor |
|
| 5463540 |
Hessian fly |
Mayetiola destructor |
|
| 5454489 |
musk thistle flower fly |
Cheilosia corydon |
Larval damage descending in stem |
| 5454488 |
musk thistle flower fly |
Cheilosia corydon |
|
| 1201005 |
pine budgall midge |
Contarinia coloradensis |
needle with gall |
| 5453986 |
gouty pitch midge |
Cecidomyia piniinopis |
swelling and resin bleeding indicates impending emergence of larva from the shoot - late February 2011 |
| 5453987 |
gouty pitch midge |
Cecidomyia piniinopis |
bark removed to show mature larva - late February 2011 |
| 5453988 |
gouty pitch midge |
Cecidomyia piniinopis |
swelling and resin bleeding indicates impending emergence of larva from the shoot; larva is barely visible as the bark spits open - late February 2011 |
| 5453989 |
gouty pitch midge |
Cecidomyia piniinopis |
bark removed to show mature larva - late February 2011 |
| 5453990 |
gouty pitch midge |
Cecidomyia piniinopis |
swelling and resin bleeding indicates impending emergence of larva from the shoot; larva is barely visible as the bark spits open - late February 2011 |
| 5453991 |
gouty pitch midge |
Cecidomyia piniinopis |
bark removed to show mature larva - late February 2011 |
| 5453992 |
gouty pitch midge |
Cecidomyia piniinopis |
mature larva newly emerged from the shoot - late February 2011 |
| 5443283 |
poplar twiggall fly |
Hexomyza schineri |
Developing gall. Photograph taken June 20, 2010. |
| 5443281 |
poplar twiggall fly |
Hexomyza schineri |
|
| 5443282 |
poplar twiggall fly |
Hexomyza schineri |
|
| 0002046 |
grass fly |
Lipara similis |
Note dried top leaf and lack of flower. |
| 0805058 |
spruce bud midge |
Dasineura swainei |
infested bud and larva |
| 0805057 |
spruce bud midge |
Dasineura swainei |
killed spruce terminal |
| 1201001 |
pine budgall midge |
Contarinia coloradensis |
close up of developing gall |
| 5436210 |
Canada thistle stem gall fly |
Urophora cardui |
rearing cage, galls placed in peat moss and kept damp, hatching adults are then collected in closed sleeve cage. Adults give off a sweet fragrance when they emerge. |
| 1201002 |
pine budgall midge |
Contarinia coloradensis |
gall |
| 1201003 |
pine budgall midge |
Contarinia coloradensis |
gall |
| 1929055 |
Canada thistle stem gall fly |
Urophora cardui |
galls |
| 1929054 |
Canada thistle stem gall fly |
Urophora cardui |
|
| 1929053 |
Canada thistle stem gall fly |
Urophora cardui |
|
| 1326106 |
poplar twiggall fly |
Hexomyza schineri |
Tree showing effect of several years' infestation |
| 1326092 |
poplar twiggall fly |
Hexomyza schineri |
Pupa emerging from gall |
| 1326107 |
poplar twiggall fly |
Hexomyza schineri |
cross section of old gall |
| 1326102 |
poplar twiggall fly |
Hexomyza schineri |
Adult fly and primary parasitoid, the eurytomid Eurytoma contractura |
| 0024040 |
musk thistle flower fly |
Cheilosia corydon |
feeding damage caused by larvae |
| 0024025 |
Canada thistle stem gall fly |
Urophora cardui |
|
| 0025035 |
musk thistle flower fly |
Cheilosia corydon |
|
| 0025038 |
musk thistle flower fly |
Cheilosia corydon |
|
| 1320072 |
Hessian fly |
Mayetiola destructor |
|
| 1201004 |
pine budgall midge |
Contarinia coloradensis |
opened gall showing midge |
| 0024026 |
Canada thistle stem gall fly |
Urophora cardui |
gall in stem |
| 5435726 |
knapweed peacock fly |
Chaetorellia acrolophi |
|
| 5436213 |
musk thistle flower fly |
Cheilosia corydon |
dead terminal tip and flower buds from attack by stem boring fly |
| 5436208 |
Canada thistle stem gall fly |
Urophora cardui |
gall |
| 5436204 |
Canada thistle stem gall fly |
Urophora cardui |
adult gall fly |
| 5436205 |
Canada thistle stem gall fly |
Urophora cardui |
adult gall fly |
| 5436206 |
Canada thistle stem gall fly |
Urophora cardui |
adult gall fly |
| 0026039 |
stem-mining fly |
Pegomya euphorbiae |
|
| 0002050 |
grass fly |
Platycephala planifrons |
|
| 1326091 |
poplar twiggall fly |
Hexomyza schineri |
Larva exposed on gall |
| 1326105 |
poplar twiggall fly |
Hexomyza schineri |
Adult sunning on leaf |
| 0002047 |
univoltine gall midge |
Lasioptera hungarica |
and fungal mycelium. |
| 5435727 |
knapweed peacock fly |
Chaetorellia acrolophi |
|
| 5435728 |
knapweed peacock fly |
Chaetorellia acrolophi |
|
| 5435729 |
knapweed peacock fly |
Chaetorellia acrolophi |
|
| 1398193 |
spruce gall midge |
Mayetiola piceae |
|
| 1326090 |
poplar twiggall fly |
Hexomyza schineri |
Early symptoms of twig galling |
| 1199024 |
spruce gall midge |
Mayetiola piceae |
|
| 5402546 |
chloropid flies |
|
collected from the lawn |
| 1326104 |
poplar twiggall fly |
Hexomyza schineri |
typical twiggalls |
| 1253048 |
swede midge |
Contarinia nasturtii |
Male genitalia |
| 1326101 |
poplar twiggall fly |
Hexomyza schineri |
Symptoms shortly after oviposition |
| 2253013 |
gouty pitch midge |
Cecidomyia piniinopis |
|
| 1540788 |
Agromyzid fly |
Cecidomyiaceltis deserta |
|
| 1540789 |
Agromyzid fly |
Cecidomyiaceltis deserta |
|
| 1540790 |
Agromyzid fly |
Cecidomyiaceltis deserta |
|
| 1540791 |
Agromyzid fly |
Cecidomyiaceltis deserta |
|
| 1326103 |
poplar twiggall fly |
Hexomyza schineri |
typical twiggalls |
| 5387800 |
gouty pitch midge |
Cecidomyia piniinopis |
Branch flagging on ponderosa pine due to gouty pitch midge, Cecidomyia piniinopis. 6/29/07. |
| 5387798 |
gouty pitch midge |
Cecidomyia piniinopis |
Ponderosa pine plantation infested with gouty pitch midge, Cecidomyia piniinopis. 5/29/08. |
| 5387799 |
gouty pitch midge |
Cecidomyia piniinopis |
Ponderosa pines infested with gouty pitch midge, Cecidomyia piniinopis, next to an uninfested, resistant tree. 6/29/07. |
| 5387801 |
gouty pitch midge |
Cecidomyia piniinopis |
Ponderosa pine shoot infested with gouty pitch midge, Cecidomyia piniinopis. Infested shoots survive for one year, the duration of the life cycle, before fading. Not all infested shoots die. 5/29/08 |
| 5387802 |
gouty pitch midge |
Cecidomyia piniinopis |
Ponderosa pine shoot infested with gouty pitch midge, Cecidomyia piniinopis. Infested shoots survive for one year, the duration of the life cycle, before fading. Not all infested shoots die. 5/29/08 |
| 5387803 |
gouty pitch midge |
Cecidomyia piniinopis |
Scarring on this ponderosa pine branch indicates that a previous year’s infestation of the gouty pitch midge, Cecidomyia piniinopis, failed to kill the shoot. 6/29/07. |
| 5387804 |
gouty pitch midge |
Cecidomyia piniinopis |
Infested ponderosa pine shoot cut open to expose larvae of the gouty pitch midge, Cecidomyia piniinopis. 12/20/07. |
| 5387805 |
gouty pitch midge |
Cecidomyia piniinopis |
Larva of the gouty pitch midge, Cecidomyia piniinopis. 1/17/08. |
| 5387806 |
gouty pitch midge |
Cecidomyia piniinopis |
Cocoons of the gouty pitch midge, Cecidomyia piniinopis, on ponderosa pine needles. 3/24/08. |
| 5387807 |
gouty pitch midge |
Cecidomyia piniinopis |
Cocoons of the gouty pitch midge, Cecidomyia piniinopis, on ponderosa pine needles. 3/24/08. |
| 5387808 |
gouty pitch midge |
Cecidomyia piniinopis |
Cocoon of the gouty pitch midge, Cecidomyia piniinopis. 3/24/08. |
| 5387809 |
gouty pitch midge |
Cecidomyia piniinopis |
Empty cocoons and pupal cases of the gouty pitch midge, Cecidomyia piniinopis, on ponderosa pine needles. 4/1/08. |
| 5387810 |
gouty pitch midge |
Cecidomyia piniinopis |
Adult of the gouty pitch midge, Cecidomyia piniinopis. 4/1/08. |
| 5378028 |
gall midge |
Lasioptera populnea |
|
| 5378027 |
gall midge |
Lasioptera populnea |
|
| 5364206 |
sunflower maggot |
Strauzia longipennis |
Adult sunflower maggots (Strauzia longipennis). |
| 5364085 |
sunflower maggot |
Strauzia longipennis |
Adult of the sunflower maggot (Strauzia longipennis). |
| 5358617 |
Canada thistle stem gall fly |
Urophora cardui |
Adult Canada thistle stem gall fly (Urophora cardui), a biological control agent, and a gall caused by the larvae. |
| 5358618 |
Canada thistle stem gall fly |
Urophora cardui |
Gall from Canada thistle (Cirsium arvense), cut open to reveal damage caused by the larvae of the fly Urophora cardui, a biological control agent. |
| 5368103 |
soybean stem fly |
Melanagromyza sojae |
in the center of the bean stem |
| 5368104 |
soybean stem fly |
Melanagromyza sojae |
exit hole (formed before pupation) |
| 5368102 |
soybean stem fly |
Melanagromyza sojae |
|
| 5368100 |
soybean stem fly |
Melanagromyza sojae |
|
| 5368107 |
bean fly |
Ophiomyia phaseoli |
attacks in the seedling stage usually cause wilting and death |
| 5368105 |
bean fly |
Ophiomyia phaseoli |
|
| 5359640 |
Hessian fly |
Mayetiola destructor |
Hessian fly damage to stems of wheat. |
| 5304034 |
Canada thistle stem gall fly |
Urophora cardui |
|
| 5304035 |
Canada thistle stem gall fly |
Urophora cardui |
|
| 5304036 |
Canada thistle stem gall fly |
Urophora cardui |
stem gall |
| 5304037 |
Canada thistle stem gall fly |
Urophora cardui |
stem gall |
| 5249071 |
eupatorium gall fly |
Procecidochares utilis |
Ageratina_adenophora_gall |
| 5249072 |
eupatorium gall fly |
Procecidochares utilis |
Ageratina_adenophora_gall |
| 5209034 |
poplar twiggall fly |
Hexomyza schineri |
Old injury. The original damage was the normal twig gall and the insect has absented the gall for many years.. As the plant grows this swelling injury continues to be incorporated into new wood. |
| 5174037 |
Hessian fly |
Mayetiola destructor |
A female Hessian fly, about one-eighth-inch long |
| 5174033 |
Hessian fly |
Mayetiola destructor |
Once the outer leaves of the wheat seedling are peeled away, Hessian fly larvae can be seen feeding near the base of a susceptible plant (larvae are about 800 micrometers long). |
| 1316087 |
Fergusonina flies |
Fergusonina spp. |
Fergusonina fly. |
| 1316085 |
Fergusonina flies |
Fergusonina spp. |
Scanning electron micrograph of Fergusonina fly eggs (the dropletlike structures) and associated juvenile Fergusobia nematodes in a melaleuca flower bud. Magnified about 350x |
| 1316088 |
Fergusonina flies |
Fergusonina spp. |
Melaleuca galls make a snug home where Fergusonina fly offspring and Fergusobia nematodes can develop. |
| 5083051 |
poplar twiggall fly |
Hexomyza schineri |
Leaf injury produced as adult feeding wounds by ovipositon punctures. |
| 5083090 |
poplar twiggall fly |
Hexomyza schineri |
ovipositing in new growth |
| 2200079 |
poplar twiggall fly |
Hexomyza schineri |
Oviposition wounding by adults. Small punctures and tattered leaves indicate feeding wounds made by adults |
| 2200077 |
poplar twiggall fly |
Hexomyza schineri |
Adult resting on newly emerged leaf. May 2, 2006 |
| 2113062 |
beech bud gall midge |
Contarinia fagi |
larval feeding damage to beech seedlings; May 2001; det. M. Skuhrava, Praha |
| 1470034 |
jack pine resin midge |
Cecidomyia resinicola |
|
| 2134064 |
swede midge |
Contarinia nasturtii |
body size 1.3 mm |
| 2134066 |
swede midge |
Contarinia nasturtii |
Damaged red cabbage. Note twisted leaves, swelling |
| 2134067 |
swede midge |
Contarinia nasturtii |
Damaged red cabbage followed by bacterial soft rot and collapse of plant |
| 2134068 |
swede midge |
Contarinia nasturtii |
Swede midge damaged plant. Note brown scarring, multiple stems, twisted leaves. |
| 2134069 |
swede midge |
Contarinia nasturtii |
Damaged red cabbage |
| 2134070 |
swede midge |
Contarinia nasturtii |
Damaged green cabbage |
| 2134071 |
swede midge |
Contarinia nasturtii |
Damaged plant - leaf twisting, brown scarring |
| 2134072 |
swede midge |
Contarinia nasturtii |
Damaged transplant - swollen petiole, brown scars |
| 2134073 |
swede midge |
Contarinia nasturtii |
Damaged green cabbage - twisted leaves, rotten center |
| 2134065 |
swede midge |
Contarinia nasturtii |
Swede midge larvae and feeding damage on cauliflower. Swede midge larvae prefer to feed on growing tips but in high densities they occupy the stem and the leaves. |
| 2122047 |
poplar twiggall fly |
Hexomyza schineri |
Galls, Fort Collins, CO. |
| 2122048 |
poplar twiggall fly |
Hexomyza schineri |
Galls |
| 1253057 |
swede midge |
Contarinia nasturtii |
Spatula |
| 1253039 |
swede midge |
Contarinia nasturtii |
Female |
| 1253040 |
swede midge |
Contarinia nasturtii |
Female |
| 1253041 |
swede midge |
Contarinia nasturtii |
Female |
| 1253042 |
swede midge |
Contarinia nasturtii |
Labeled Male Head |
| 1253043 |
swede midge |
Contarinia nasturtii |
Spatula |
| 1253044 |
swede midge |
Contarinia nasturtii |
|
| 1253045 |
swede midge |
Contarinia nasturtii |
legs |
| 1253046 |
swede midge |
Contarinia nasturtii |
Male |
| 1253047 |
swede midge |
Contarinia nasturtii |
Male |
| 1253049 |
swede midge |
Contarinia nasturtii |
Male genitalia |
| 1253050 |
swede midge |
Contarinia nasturtii |
Male |
| 1253051 |
swede midge |
Contarinia nasturtii |
Head |
| 1254060 |
poplar twiggall fly |
Hexomyza schineri |
Galls, Fort Collins, CO. |
| 1241511 |
gouty pitch midge |
Cecidomyia piniinopis |
Gouty pitch midge infests and kills shoots, usually of young pines. |
| 1241512 |
gouty pitch midge |
Cecidomyia piniinopis |
Maggots within branch swellings. |
| 1350082 |
knapweed peacock fly |
Chaetorellia acrolophi |
|
| 1428100 |
poplar twiggall fly |
Hexomyza schineri |
gall on twigs. |
| 0025034 |
musk thistle flower fly |
Cheilosia corydon |
at a release |
| 0886056 |
knapweed peacock fly |
Chaetorellia acrolophi |
|
| 2253011 |
gouty pitch midge |
Cecidomyia piniinopis |
pupa |
| 2253012 |
gouty pitch midge |
Cecidomyia piniinopis |
|
| 0024039 |
musk thistle flower fly |
Cheilosia corydon |
a biological control agent of Musk Thistle |
| 0025099 |
musk thistle flower fly |
Cheilosia corydon |
|
| 0021070 |
knapweed peacock fly |
Chaetorellia acrolophi |
on Knapweed flower |
| 0021071 |
knapweed peacock fly |
Chaetorellia acrolophi |
|
| 0022010 |
knapweed peacock fly |
Chaetorellia acrolophi |
biological control agent of knapweeds |
| 0488056 |
jack pine resin midge |
Cecidomyia resinicola |
|
