Body vesiture of Eristalis tenax species; part of entire hair.

Eristalis

Body vesiture of Eristalis tenax species; part of entire hair.

Rat-railed larva of Eristalis species.

Eristalis

Rat-railed larva of Eristalis species.

Mesograpta polita species; adult.

Mesograpta

Mesograpta polita species; adult.

Mesograpta polita species; larva.

Mesograpta

Mesograpta polita species; larva.

Mesograpta polita species; pupa.

Mesograpta

Mesograpta polita species; pupa.

The sheep-bot, Estrus ovis species; fly.

Sheep Botfly

The sheep-bot, Estrus ovis species; fly.

The sheep-bot, Estrus ovis species; fly.

Sheep Botfly

The sheep-bot, Estrus ovis species; fly.

The sheep-bot, Estrus ovis species; pupa.

Sheep Botfly

The sheep-bot, Estrus ovis species; pupa.

The sheep-bot, Estrus ovis species; full-grown larva.

Sheep Botfly

The sheep-bot, Estrus ovis species; full-grown larva.

The sheep-bot, Estrus ovis species; full-grown larva.

Sheep Botfly

The sheep-bot, Estrus ovis species; full-grown larva.

The sheep-bot, Estrus ovis species; young larva.

Sheep Botfly

The sheep-bot, Estrus ovis species; young larva.

Common flesh-fly of the Sarcophaga carnaria species.

Fly

Common flesh-fly of the Sarcophaga carnaria species.

Exorista flavicauda species, yellow-tailed Tachinid.

Fly

Exorista flavicauda species, yellow-tailed Tachinid.

Nemorea leucaniae species, Tachinid on cut-worms; larva.

Fly

Nemorea leucaniae species, Tachinid on cut-worms; larva.

Nemorea leucaniae species, Tachinid on cut-worms; white eggs on the anterior segments of the caterpillar.

Fly

Nemorea leucaniae species, Tachinid on cut-worms; white eggs on the anterior segments of the caterpillar.

Nemorea leucaniae species, Tachinid on cut-worms; adult.

Fly

Nemorea leucaniae species, Tachinid on cut-worms; adult.

Nemorea leucaniae species, Tachinid on cut-worms; pupa.

Fly

Nemorea leucaniae species, Tachinid on cut-worms; pupa.

Screw-worm of the Lucilia macellaria species; larva.

Fly

Screw-worm of the Lucilia macellaria species; larva.

Screw-worm of the Lucilia macellaria species; detail of larva.

Fly

Screw-worm of the Lucilia macellaria species; detail of larva.

Screw-worm of the Lucilia macellaria species; detail of larva.

Fly

Screw-worm of the Lucilia macellaria species; detail of larva.

Screw-worm of the Lucilia macellaria species; pupa.

Fly

Screw-worm of the Lucilia macellaria species; pupa.

Screw-worm of the Lucilia macellaria species; adult.

Fly

Screw-worm of the Lucilia macellaria species; adult.

Screw-worm of the Lucilia macellaria species; head from side.

Fly

Screw-worm of the Lucilia macellaria species; head from side.

The blow-fly of the Calliphora vomitoria species.

Fly

The blow-fly of the Calliphora vomitoria species.

Lydella doryphorae species, Tachinid on potato-beetle.

Fly

Lydella doryphorae species, Tachinid on potato-beetle.

Larva of horn-fly.

Horn Fly

Larva of horn-fly.

Pupa of horn-fly.

Horn Fly

Pupa of horn-fly.

Structural detail of horn-fly.

Horn Fly

Structural detail of horn-fly.

Structural detail of horn-fly.

Horn Fly

Structural detail of horn-fly.

Structural detail of horn-fly.

Horn Fly

Structural detail of horn-fly.

Cabbage-maggot, Phorbia brassicae species; larva.

Cabbage Maggot

Cabbage-maggot, Phorbia brassicae species; larva.

Cabbage-maggot, Phorbia brassicae species; pupa.

Cabbage Maggot

Cabbage-maggot, Phorbia brassicae species; pupa.

Cabbage-maggot, Phorbia brassicae species; adult.

Cabbage Maggot

Cabbage-maggot, Phorbia brassicae species; adult.

Cabbage-maggot, Phorbia brassicae species; its head.

Cabbage Maggot

Cabbage-maggot, Phorbia brassicae species; its head.

Cabbage-maggot, Phorbia brassicae species; antenna.

Cabbage Maggot

Cabbage-maggot, Phorbia brassicae species; antenna.

The onion-maggot; larva.

Onion Maggot

The onion-maggot; larva.

The onion-maggot; pupa.

Onion Maggot

The onion-maggot; pupa.

The onion-maggot; adult.

Onion Maggot

The onion-maggot; adult.

The onion-maggot; section of an infested onion from the onion-maggot.

Onion Maggot

The onion-maggot; section of an infested onion from the onion-maggot.

A pomace fly of the Drosophila species; larva.

Fly

A pomace fly of the Drosophila species; larva.

A pomace fly of the Drosophila species; adult.

Fly

A pomace fly of the Drosophila species; adult.

Bee-louse of the Braula caeca species.

Bee Louse

Bee-louse of the Braula caeca species.

Bee-louse of the Braula caeca species; larva.

Bee Louse

Bee-louse of the Braula caeca species; larva.

Pear-slug, larva of Eriocampa cerasi species.

Pear Slug

Pear-slug, larva of Eriocampa cerasi species.

Currant-worm, female adult.

Currant Worm

Currant-worm, female adult.

Currant-worm, male adult.

Currant Worm

Currant-worm, male adult.

Currant-worm, larvae.

Currant Worm

Currant-worm, larvae.

Currant-worm, pupa.

Currant Worm

Currant-worm, pupa.

Currant-worm, cocoon.

Currant Worm

Currant-worm, cocoon.

Currant-worm, <em>a</em>male and female adult and <em>b</em>larvae.

Currant Worm

Currant-worm, amale and female adult and blarvae.

Phylloecus flaviventris, female adult.

Currant Stem Girdler

Phylloecus flaviventris, female adult.

Phylloecus flaviventris, male abdomen.

Currant Stem Girdler

Phylloecus flaviventris, male abdomen.

Phylloecus flaviventris, female abdomen.

Currant Stem Girdler

Phylloecus flaviventris, female abdomen.

Phylloecus flaviventris, spur of anterior tibia.

Currant Stem Girdler

Phylloecus flaviventris, spur of anterior tibia.

Grape-slug, larva of Blennocampa pygmaea.

Grape Slug

Grape-slug, larva of Blennocampa pygmaea.

<em>Tremex columba</em>, larva with young larva of Thalessa fastened to its side.

Pigeon Horntail

Tremex columba, larva with young larva of Thalessa fastened to its side.

<em>Tremex columba</em>, head of larva.

Pigeon Horntail

Tremex columba, head of larva.

<em>Tremex columba</em>, female pupa.

Pigeon Horntail

Tremex columba, female pupa.

<em>Tremex columba</em>, male pupa.

Pigeon Horntail

Tremex columba, male pupa.

<em>Tremex columba</em>, female.

Pigeon Horntail

Tremex columba, female.