French Phylloxera, distorted in mounting.

Phylloxera

French Phylloxera, distorted in mounting.

American Phylloxera.

Phylloxera

American Phylloxera.

American Phylloxera.

Phylloxera

American Phylloxera.

Galls of Phylloxera on grape-leaf.

Phylloxera Galls

Galls of Phylloxera on grape-leaf.

Phylloxera Vastatrix- a, an unaffected rootlet of grape; b, rootlets with newly-formed galls; c, same, with old and dried-up tissue; dd, groups of the lice on roots and rootlets.

Phylloxera Vastatr

Phylloxera Vastatrix- a, an unaffected rootlet of grape; b, rootlets with newly-formed galls; c, same,…

Phylloxera Vastatrix, root showing location of the eggs.

Phylloxera Vastatr

Phylloxera Vastatrix, root showing location of the eggs.

Pithy gall on blackberry, made by Diastrophus nebulosus.

Pithy Gall

Pithy gall on blackberry, made by Diastrophus nebulosus.

Pithy gall on blackberry, section to show cells.

Pithy Gall

Pithy gall on blackberry, section to show cells.

Paecilocapsus lineatus, four-lined plant-bug.

Plant Bug

Paecilocapsus lineatus, four-lined plant-bug.

Paecilocapsus lineatus, four-lined plant-bug.

Plant Bug

Paecilocapsus lineatus, four-lined plant-bug.

Paecilocapsus lineatus, four-lined plant-bug's single egg.

Plant Bug

Paecilocapsus lineatus, four-lined plant-bug's single egg.

Paecilocapsus lineatus, four-lined plant-bug's egg mass in currant.

Plant Bug

Paecilocapsus lineatus, four-lined plant-bug's egg mass in currant.

Otiocerus coquebertii, a small insect of a somewhat elongated form and having a small projection in front, resembling the lantern of the true fulgora or lantern fly of Surinam, but on a very diminutive scale; it feeds on the wild grape, beech, and oak; it is 0.35 to 0.45 in length, and of a yellowish-white color, with a bright carmine red stripe running longitudinally along each side of its wing, and which stripe is usually forked at its hinder end.

Planthopper

Otiocerus coquebertii, a small insect of a somewhat elongated form and having a small projection in…

Plum-curculio, Conotrachelus nenuphar species; larva.

Plum Curculio

Plum-curculio, Conotrachelus nenuphar species; larva.

Plum-curculio, Conotrachelus nenuphar species; pupa.

Plum Curculio

Plum-curculio, Conotrachelus nenuphar species; pupa.

Plum-curculio, Conotrachelus nenuphar species; adult.

Plum Curculio

Plum-curculio, Conotrachelus nenuphar species; adult.

Plum-curculio, Conotrachelus nenuphar species; beetle at work on a young plum, showing a crescent mark.

Plum Curculio

Plum-curculio, Conotrachelus nenuphar species; beetle at work on a young plum, showing a crescent mark.

A Podurid, or spring-tail, found on manure beds.

Podurid

A Podurid, or spring-tail, found on manure beds.

Nest of Polistes gallicola.

Polistes

Nest of Polistes gallicola.

The Colorado Potato-bug.

Potato Bug

The Colorado Potato-bug.

The Colorado potato-beetle of the Doryphora io-lineata species.

Potato Bug

The Colorado potato-beetle of the Doryphora io-lineata species.

The Oriental Roach, male.

Roach

The Oriental Roach, male.

The Oriental Roach, female.

Roach

The Oriental Roach, female.

Grape-root-worm of the Fidia viticida species; adult.

Grape Rootworm

Grape-root-worm of the Fidia viticida species; adult.

Grape-root-worm of the Fidia viticida species; pupa.

Grape Rootworm

Grape-root-worm of the Fidia viticida species; pupa.

Grape-root-worm of the Fidia viticida species; larva.

Grape Rootworm

Grape-root-worm of the Fidia viticida species; larva.

Grape-root-worm of the Fidia viticida species; detail of larval structure.

Grape Rootworm

Grape-root-worm of the Fidia viticida species; detail of larval structure.

Grape-root-worm of the Fidia viticida species; detail of larval structure.

Grape Rootworm

Grape-root-worm of the Fidia viticida species; detail of larval structure.

Grape-root-worm of the Fidia viticida species; detail of larval structure.

Grape Rootworm

Grape-root-worm of the Fidia viticida species; detail of larval structure.

Rose-chafer, Macrodaclylus subspinosus species; beetle.

Rose Chafer

Rose-chafer, Macrodaclylus subspinosus species; beetle.

Rose-chafer, Macrodaclylus subspinosus species; head.

Rose Chafer

Rose-chafer, Macrodaclylus subspinosus species; head.

Rose-chafer, Macrodaclylus subspinosus species; thorax.

Rose Chafer

Rose-chafer, Macrodaclylus subspinosus species; thorax.

Rose-chafer, Macrodaclylus subspinosus species; thorax.

Rose Chafer

Rose-chafer, Macrodaclylus subspinosus species; thorax.

Rose-chafer, Macrodaclylus subspinosus species; structural detail.

Rose Chafer

Rose-chafer, Macrodaclylus subspinosus species; structural detail.

Rose-chafer, Macrodaclylus subspinosus species; structural detail.

Rose Chafer

Rose-chafer, Macrodaclylus subspinosus species; structural detail.

Rose-chafer, Macrodaclylus subspinosus species; structural detail.

Rose Chafer

Rose-chafer, Macrodaclylus subspinosus species; structural detail.

Rose-chafer, larva.

Rose Chafer

Rose-chafer, larva.

Rose-chafer, structural detail.

Rose Chafer

Rose-chafer, structural detail.

Rose-chafer, structural detail.

Rose Chafer

Rose-chafer, structural detail.

Rose-chafer, structural detail.

Rose Chafer

Rose-chafer, structural detail.

Rose-chafer, structural detail.

Rose Chafer

Rose-chafer, structural detail.

Rose-chafer, pupa.

Rose Chafer

Rose-chafer, pupa.

Rose-chafer, structural detail.

Rose Chafer

Rose-chafer, structural detail.

Rose-chafer, structural detail.

Rose-chafer

Rose-chafer, structural detail.

The male Icerya Purchasi

Cottony Cushion Scale

The male Icerya Purchasi

An antennal joint of the Icerya Purchasi.

Cottony Cushion Scale

An antennal joint of the Icerya Purchasi.

Tarsus of the Icerya Purchasi.

Cottony Cushion Scale

Tarsus of the Icerya Purchasi.

Rudiment of secondaries hooked to base of primaries of the Icerya Purchasi.

Cottony Cushion Scale

Rudiment of secondaries hooked to base of primaries of the Icerya Purchasi.

A female Icerya Purchasi.

Cottony Cushion Scale

A female Icerya Purchasi.

Cottony maple scale, Pulminaria innumerabilis, showing, at a, the female on a leaf and, at b, same on a twig.

Maple Scale

Cottony maple scale, Pulminaria innumerabilis, showing, at a, the female on a leaf and, at b, same on…

Oyster-shell scale, Mytilaspis Pomorum species; a female scale, from beneath, feilled with eggs.

Oyster-shell Scale

Oyster-shell scale, Mytilaspis Pomorum species; a female scale, from beneath, feilled with eggs.

Oyster-shell scale, Mytilaspis Pomorum species; a female scale, from above, filled with eggs.

Oyster-shell Scale

Oyster-shell scale, Mytilaspis Pomorum species; a female scale, from above, filled with eggs.

Oyster-shell scale, Mytilaspis Pomorum species; a twig infested by female scales.

Oyster-shell Scale

Oyster-shell scale, Mytilaspis Pomorum species; a twig infested by female scales.

Oyster-shell scale, Mytilaspis Pomorum species; a male scale and a twig infested therewith.

Oyster-shell Scale

Oyster-shell scale, Mytilaspis Pomorum species; a male scale and a twig infested therewith.

Mytilaspis Pomorum- the male.

Oystershell Scale

Mytilaspis Pomorum- the male.

Mytilaspis Pomorum, its tarsus.

Oystershell Scale

Mytilaspis Pomorum, its tarsus.

Mytilaspis Pomorum, young larva.

Oystershell Scale

Mytilaspis Pomorum, young larva.

Mytilaspis Pomorum, its antenna.

Oystershell Scale

Mytilaspis Pomorum, its antenna.

Mytilaspis Pomorum, the female.

Oystershell Scale

Mytilaspis Pomorum, the female.

The San Jose scale winged male.

San Jose Scale

The San Jose scale winged male.