This ClipArt gallery includes 147 illustrations of spiders, mites, scorpions, and other members of the arachnid class.

"Liphistus desultor, Ventral view with the prosomatic appendages cut short expecting the chelicerae (1) whose sharp retroverts are seen. Between the bases of the prosomatic limbs an anterior and a posterior sternal plate (black) are seen. I, The sternum of the first opisthosomatic or genital somite covering the genital aperture and the first pair of lungsacs. In front of it the narrow waist is formed by the soft sternal area of the praegenital somite. 2, the sternite of the second opisthosomatic somite covering the posterior pair of lung-sacs; 3 and 4, the spinning appendages (limbs) of the opisthosoma; a, inner, b, outer ramus of the appendage; II, sternite of the eleventh somite of the opisthosoma: in front of it other rudimentary sternites; an, anus." — The Encyclopedia Britannica, 1910

Liphistius Desultor

"Liphistus desultor, Ventral view with the prosomatic appendages cut short expecting the chelicerae…

"Liphistius desultor. Lateral view. I to VI, Appendages of the prosoma cut off at the base. o, Ocular tubercle. praegen, The prae-genital somite. 1 and 2, Sternites of the first and second opisthosomatic somites. 3 and 4, Appendages of the third and fourth opisthosomatic somites, which are the spinning organs, and in this genus occupy their primitive position instead of migrating to the anal region as in other spiders. 5, Tergite of the fifth opisthosomatic somite. II, Eleventh opisthosomatic somite; an, Anus." — The Encyclopedia Britannica, 1910

Liphistius Desultor

"Liphistius desultor. Lateral view. I to VI, Appendages of the prosoma cut off at the base. o, Ocular…

"Liphistius desultor. Under side of the uplifted genital or first opisthosomatic somite of the female; g, genital aperture; p, pitted plate, probably a gland for the secretion of adhesive material for the eggs; l, the edges of the lamellae of the lung-books of the first pair." — The Encyclopedia Britannica, 1910

Liphistius Desultor

"Liphistius desultor. Under side of the uplifted genital or first opisthosomatic somite of the female;…

"Megalaspid extenuatus. One of the Asaphidae allied to Illaenus, from the Ordovician of East Gothland, Swedan." — The Encyclopedia Britannica, 1910

Megalaspis

"Megalaspid extenuatus. One of the Asaphidae allied to Illaenus, from the Ordovician of East Gothland,…

"The first three pairs of mesosomatic appendages of Scorpio and Limulus compared. VII. The genital operculum; VIII. The pectens of Scorpio and the first branchial plate of Limulus; IX. The first pair of lung-books of Scorpio and the second branchial plate of Limulus. gp, Genital pore; epst, Epistigmatic sclerite; stg, Stigma or orifice of the hollow tendons of the branchial plates of Limulus." — The Encyclopedia Britannica, 1910

Mesosomatic

"The first three pairs of mesosomatic appendages of Scorpio and Limulus compared. VII. The genital operculum;…

"Diagrams of the meta-sternite st, with genital operculum op, and the first lamelligerous pair of appendages ga, with uniting sternal element st of Scorpio (left) and Limulus (right)." — The Encyclopedia Britannica, 1910

Meta-sternite

"Diagrams of the meta-sternite st, with genital operculum op, and the first lamelligerous pair of appendages…

The mites form with the ticks the order Acarina, and are distinguished by the fact that the abdomen is amalgamated with the cephalothorax to form a single mass.

Mite

The mites form with the ticks the order Acarina, and are distinguished by the fact that the abdomen…

The mites form with the ticks the order Acarina, and are distinguished by the fact that the abdomen is amalgamated with the cephalothorax to form a single mass.

Mite

The mites form with the ticks the order Acarina, and are distinguished by the fact that the abdomen…

The mite producing sheep scab.

Mite

The mite producing sheep scab.

"Of the true mites, the domestic or cheese mite and the itch-mite are examples." — Williams, 1889

Cheese mite

"Of the true mites, the domestic or cheese mite and the itch-mite are examples." — Williams, 1889

The Flour Mite (Acarus siro) is an arachnid that is a pest of stored grain and flour.

Flour Mite

The Flour Mite (Acarus siro) is an arachnid that is a pest of stored grain and flour.

The follicle mite or Demodex.

Follicle Mite

The follicle mite or Demodex.

The harvest mite or chigger (Leptus autumnalis) is a mite that live in forests and grasslands.

Harvest Mite

The harvest mite or chigger (Leptus autumnalis) is a mite that live in forests and grasslands.

The itch mite or Sarcoptes scabiei.

Itch Mite

The itch mite or Sarcoptes scabiei.

The cotton rust mite (Tetranychus gloveri) is a spider mite known for causing damage to cotton leaves.

Cotton Rust Mite

The cotton rust mite (Tetranychus gloveri) is a spider mite known for causing damage to cotton leaves.

"The spiders with which we in temperate climates are most acquainted are of small size, but in hot regions there are several species whose extended legs occupy a circle of six or seven inches in diameter. Some of these, belonging to the genus <em>Mygale</em>, found in South America and Mexico, are said to attack young humming-birds, and to climb trees for this purpose." &mdash; Goodrich, 1859

Mygale

"The spiders with which we in temperate climates are most acquainted are of small size, but in hot regions…

Mygale fodiens, part of the Arachnidia class.

Mygale Fodiens

Mygale fodiens, part of the Arachnidia class.

"One of the Numphonomorphous Pantopoda, Nymphon hispidum, showing the seven pairs of appendages 1 to 7; ab, the rudimentary opisthoma; s, the mouth-bearing proboscis." &mdash; The Encyclopedia Britannica, 1910

Nymphonomorphous

"One of the Numphonomorphous Pantopoda, Nymphon hispidum, showing the seven pairs of appendages 1 to…

"Ventral view of a restoration of Palaeophonus Hunteri, Pocock, the Silurian scorpion from Lesmahagow, Scotland. Restored by R. I. Peacock. The meeting of the coxae of all the prosomatic limbs in front of the pentagonal sternum; the space for a genital operculum; the pair of pectens, and the absence of any evidence of pulmonary stigmata are noticeable in this specimen." &mdash; The Encyclopedia Britannica, 1910

Palaeophonus Hunteri

"Ventral view of a restoration of Palaeophonus Hunteri, Pocock, the Silurian scorpion from Lesmahagow,…

"Dorsal view of a restoration of Palaeophonus nuncius, Thorell. The Silurian scorpion from Gothland." &mdash; The Encyclopedia Britannica, 1910

Palaophonus

"Dorsal view of a restoration of Palaeophonus nuncius, Thorell. The Silurian scorpion from Gothland."…

"Pierygotus osiliensis, Schmidt. Silurian of Rootzkil. Restoration of the ventral surface, about a third natural size, after Schmidt. a, Camerostome or epistoma. m, Chilarium or metasternite of the prosoma. oc, The compound eyes. 1 to 8, segments of the sixth prosomatic appendage. I' to V', first five opisthosomatic somites. 7', sixth opisthosomatic somite." &mdash; The Encyclopedia Britannica, 1910

Pierygotus Osiliensis

"Pierygotus osiliensis, Schmidt. Silurian of Rootzkil. Restoration of the ventral surface, about a third…

"Comparison of the sixth prosomatic limb of a recent scorpion (B), of Palaeophonus (C), and of Limulus (A), showing their agreement in the number of segments; in the existence of a movable spine, Sp, at the distal border of the fifth segment; in the correspondence of the two claws at the free end of the limb of Scorpio with two spines similarly placed in Limulus; and, lastly, in the correspondence of the three talon-like spines carried on the distal margin of segment six of recent scorpions with the four larger but similarly situated spines of the leg of Limulus; s, groove dividing the ankylosed segments 4 and 5 of the Limulus leg into two." &mdash; The Encyclopedia Britannica, 1910

Prosomatic Limb

"Comparison of the sixth prosomatic limb of a recent scorpion (B), of Palaeophonus (C), and of Limulus…

A small arachnid that resembles a scorpion.

Pseudoscorpion

A small arachnid that resembles a scorpion.

"Diagram of a retinula of the central eye of a scorpion consisting of five retina-cells (ret), with adherent branched pigment cells (pig)." &mdash; The Encyclopedia Britannica, 1910

Retinula

"Diagram of a retinula of the central eye of a scorpion consisting of five retina-cells (ret), with…

"Rhabdom of the same, consisting of five confluent rhabdomeres." &mdash; The Encyclopedia Britannica, 1910

Rhabdom

"Rhabdom of the same, consisting of five confluent rhabdomeres." — The Encyclopedia Britannica,…

"Transverse section of the rhabdom of a retinula of the scorpion's central eye, showing its five constituent rhabdomeres as rays of a star." &mdash; The Encyclopedia Britannica, 1910

Rhabdom

"Transverse section of the rhabdom of a retinula of the scorpion's central eye, showing its five constituent…

"Five stages in the development of the trilobite Sao hirsuta. A, Youngest stage. B, Older stage with distinct pygidial carapace. C, Stage with two free mesosomatic somites between the prosomatic and telsonic carapaces. D, Stage with seven free intermediate somites. E, Stage with twelve free somites; the telsonic carapace has not increased in size. a, Lateral eye. g, So-called facial "suture" (not really a suture). p, Telsonic carapace." &mdash; The Encyclopedia Britannica, 1910

Sao Hirsuto

"Five stages in the development of the trilobite Sao hirsuta. A, Youngest stage. B, Older stage with…

"Schizomus crassicaudaius, one of the Tartarid Pedipalpi. Ventral view of a female with the appendages cut short near the base. a, Prosternum of prosoma. b, Metasternum of prosoma. prae-gen, The prae-genital somite. I opisth, First somite of the opisthosoma. II opisth, Eleventh somite of the opisthosoma. pa, Post-anal lobe of the female." &mdash; The Encyclopedia Britannica, 1910

Schizomus

"Schizomus crassicaudaius, one of the Tartarid Pedipalpi. Ventral view of a female with the appendages…

"Schizomus crassicaudatus, a Tartarid Pedipalp. Dorsal view of a male with the appendages cut short. I to VI. The prosomatic appendages. a, Anterior plate. b, Posterior plate of the prosomatic carapace. prae-gen, Tergum of the praegenital somite. II, The eleventh somite of the opisthosoma. pa, Post-anal lobe of the male&mdash;a conical body with narrow basal stalk." &mdash; The Encyclopedia Britannica, 1910

Schizomus

"Schizomus crassicaudatus, a Tartarid Pedipalp. Dorsal view of a male with the appendages cut short.…

"Schizomus crassicaudatus, one of the Pedipalpi. Lateral view of a male, II to VI, the prosomatic appendages, the first being concealed; 5, the fifth, and II, the eleventh tergites of the opisthosoma; pa, the conical post-anal lobe." &mdash; The Encyclopedia Britannica, 1910

Schizomus

"Schizomus crassicaudatus, one of the Pedipalpi. Lateral view of a male, II to VI, the prosomatic appendages,…

"Embryo of scorpion, ventral view showing somites and appendages. sgc, Frontal groove. sa, Rudiment of lateral eyes. obl, Camerostome (upper lip). so, Sense-organ of Patten. PrGabp1, Rudiment of the appendage of the praegenital somite which disappears. abp2, Rudiment of the right half of the genital operculum. abp3, Rudiment of the right half of the genital operculum. abp4 to abp7, Rudiments of the four appendages which carry the pulmonary lamellae. I to VI, Rudiments of the six limbs of the prosoma. VIIPrG, The evanescent praegenital somite. VIII, The first mesosomatic somite or genital somite. IX, The second mesosomatic somite or pectiniferous somite. X to XIII, The four pulmoniferous somites. XIV, The first metasomatic somite." &mdash; The Encyclopedia Britannica, 1910

Scorpio Embryo

"Embryo of scorpion, ventral view showing somites and appendages. sgc, Frontal groove. sa, Rudiment…

Scorpions are found in warm climates, reaching their greatest size in tropical America and Africa.

Scorpion

Scorpions are found in warm climates, reaching their greatest size in tropical America and Africa.

Scorpions are characterized by having a distinctly segmented abdomen, which passes into the cephalothorax, without any well-marked line of boundary.

Scorpion

Scorpions are characterized by having a distinctly segmented abdomen, which passes into the cephalothorax,…

"This order, sometimes called the <em>Pedipalpi</em>, or <em>feet-feelers</em>, and which derives its name from the Greek <em>polus</em>, many <em>mera</em>, divisions, and <em>somata</em>, bodies, includes two families, the first of which is the <em>Scorpiondae</em>, characterized by their elongated tail-like abdomen, armed at its extremity with a sort of hooked claw, which, when the creatures are in motion, is always carried over the back in a most threatening attitude." &mdash; Goodrich, 1859

Scorpion

"This order, sometimes called the Pedipalpi, or feet-feelers, and which derives its…

The name of an extensive genus of insects, native to the warm climates of both hemispheres, and belonging to the same family as the spiders.

Scorpion

The name of an extensive genus of insects, native to the warm climates of both hemispheres, and belonging…

"Ventral view of a scorpion. Palamnaeus indus, de Geer, to show the arrangement of the coxae of the limbs, the sternal elements, genital plate and pectens. M, Mouth behind the oval median camerostome. I, The chelicerae. II, The chelae. III to VI, the four pairs of walking legs. VIIgo, The genital somite or first somite of the mesosoma with the genital operculum (a fused pair of limbs). VIIIp, the pectiniferous somite. IXstg to XIstg, the four pulmonary somites. met, the pentagonal metasternite of the prosoma behind all the coxae. x, the sternum of the pectiniferous somite. y, the broad first somite of the metasoma." &mdash; The Encyclopedia Britannica, 1910

Scorpion

"Ventral view of a scorpion. Palamnaeus indus, de Geer, to show the arrangement of the coxae of the…

"View from below of a scorpion (Buthus occitanus) opened and dissected so as to show the pericardium with its muscles, the lateral arteries, and the tergo-sternal muscles. PRO, Prosoma. dpm, Dorso-plastral muscle. art, Lateral artery. tsm1, Tergo-sternal muscle of the second (pectiniferous) mesosomatic somite; this is the most anterior pair of the series of six, none are present in the genital somite. tsm4, Tergo-sternal muscle of the fifth mesosomatic somite. tsm6, Tergo-sternal muscle of the enlarged first metasomatic somite. Per, Pericardium. VPM1 to VPM7, The series of seven pairs of veno-pericardiac muscles. There is some reason to admit the existence of another more anterior pair of these muscles in Scorpio; this would make the number exactly correspond with the number in Limulus." &mdash; The Encyclopedia Britannica, 1910

Scorpion

"View from below of a scorpion (Buthus occitanus) opened and dissected so as to show the pericardium…

"Diagram of a lateral view of a longitudinal section of a scorpion. d, Chelicera. ch, Chela. cam, Camerostome. m, Mouth. ent, Entosternum. p, Pecten. stig1, First pulmonary aperture. stig4, Fourth pulmonary aperture. dam, Muscle from carapace to a praeoral entosclerite. ad, Muscle from carapace to entosternum. md, Muscle from tergite of genital somite to entosternum. dv1 to dv6, Dorso-ventral muscles. pv1 to pv7, The seven veno-pericardiac muscles of the right side." &mdash; The Encyclopedia Britannica, 1910

Scorpion

"Diagram of a lateral view of a longitudinal section of a scorpion. d, Chelicera. ch, Chela. cam, Camerostome.…

"Drawing from life of the desert scorpion, Buthusaustralis." &mdash; The Encyclopedia Britannica, 1910

Scorpion

"Drawing from life of the desert scorpion, Buthusaustralis." — The Encyclopedia Britannica, 1910

"Drawing from tlife of the Italian scorpion Euscorpius italicus, Herbst, holding a blue-bottle fly with its left chela, and carefully piercing it between head and thorax with its string. Two insertions of the string are effected and the fly is instantly paralysed by the poison so introduced into its body." &mdash; The Encyclopedia Britannica, 1910

Scorpion

"Drawing from tlife of the Italian scorpion Euscorpius italicus, Herbst, holding a blue-bottle fly with…

"The same scorpion carrying the now paralysed fly held in its chelicerae, the chelae liberated for attack and defence." &mdash; The Encyclopedia Britannica, 1910

Scorpion

"The same scorpion carrying the now paralysed fly held in its chelicerae, the chelae liberated for attack…

"Diagram of structure of Scopionidae (most of the appendages removed). IV. to XX., fourth to twentieth somite; IV., basis of the pedipalpi or great claws; V., VI., of two succeeding cephalic segments; T, telson of sting; a, mouth; b, alimentary canal; c, anus; d, heart; e, a pulmonary sac; f, line of ventral ganglionated cord; g, cerebroganglia." -Whitney, 1911

Scorpion Diagram

"Diagram of structure of Scopionidae (most of the appendages removed). IV. to XX., fourth to twentieth…

"Development of the lateral eyes of a scorpion. h, Epidermic cell-layer; mes, mesoblastic connective tissue; n, nerves; II, III, IV, V, depressions of the epidermis in each of which a cuticular lens will be formed." &mdash; The Encyclopedia Britannica, 1910

Scorpion Eyes

"Development of the lateral eyes of a scorpion. h, Epidermic cell-layer; mes, mesoblastic connective…

The Black Rock Scorpion (Scorpio (Buthus) Afer), "seen from above. At, the chelicerae, or chelate antennae; the large claws are chelate pedipalpi; Cth, cephalothorax; the first two legs are cephalic appendages, the next two thoracic; Tn, the telson or sting." -Whitney, 1911

Black Rock Scorpion

The Black Rock Scorpion (Scorpio (Buthus) Afer), "seen from above. At, the chelicerae, or chelate antennae;…

The dorsal view of Eurypterus remipes, an extinct sea scorpion from the Silurian period.

Dorsal View of Sea Scorpion

The dorsal view of Eurypterus remipes, an extinct sea scorpion from the Silurian period.

A Spider's spinning apparatus is peculiar. A reservoir inside contains gummy matter from which silk is made. It dries as fast as it is drawn out (Hooker, 1882).

Spider

A Spider's spinning apparatus is peculiar. A reservoir inside contains gummy matter from which silk…

Spider showing unusual shapes and patterns for purposes of camoflauge.

Spider

Spider showing unusual shapes and patterns for purposes of camoflauge.

Spider showing unusual shapes and patterns for purposes of camoflauge.

Spider

Spider showing unusual shapes and patterns for purposes of camoflauge.

Spider, with cocoon attached to spinnerets.

Spider

Spider, with cocoon attached to spinnerets.

Spiders come in many shapes and sizes. Some are poisonous, while others are not.

Spider

Spiders come in many shapes and sizes. Some are poisonous, while others are not.

Spiders are distinct from insects by having four pairs of legs.

Spider

Spiders are distinct from insects by having four pairs of legs.

A spider in a web

Spider

A spider in a web

An extensive division of insects, which includes the scorpions and mites. The spiders differ from most insects in that the body consists of only two segments instead of three, the head and chest being united to form one segment.

Spider

An extensive division of insects, which includes the scorpions and mites. The spiders differ from most…

"Bird-catching Spider, a name originally given to a large spider, Mygale avicularia, a native of Cayenne and Surinam; but which is now more extensively applied, being equally appropriate to a number of large species of Mygale and Epeira, berhaps also of other genera. It has, indeed, been denied by some observers that the name is truly appropriate, but the positive evidence is too strong to be easily set aside by evidence merely negative." &mdash; Chambers, 1881

Spider

"Bird-catching Spider, a name originally given to a large spider, Mygale avicularia, a native of Cayenne…

"Ventral view of a male mygalomorphous spider. I to VI, The six pairs of prosomatic appendages. a, Copulatory apparatus of the second appendage. a, Copulatory apparatus of the second appendage. b, Process of the fifth joint of the third appendage. M, Mouth. pro, Prosternite of the prosoma. mes, Mesosternite of the prosoma: observe the contact of the coxae of the sixth pair of limbs behind it; compare Liphistius where this does not occus. stg, Lung aperture. gn, Genital aperture. a, Anus with a pair of backwardly migrated spinning appendages on each side of it; compare the position of these appendages in Liphistius." &mdash; The Encyclopedia Britannica, 1910

Spider

"Ventral view of a male mygalomorphous spider. I to VI, The six pairs of prosomatic appendages. a, Copulatory…

A spider.

Spider

A spider.

A spider and its web.

Spider Web

A spider and its web.

"Web of Epeira strix, an Orb-weaving Spider." -Galloway, 1915

Spider Web

"Web of Epeira strix, an Orb-weaving Spider." -Galloway, 1915

A name for the common British garden spider.

Cross Spider

A name for the common British garden spider.

"Another remarkable member of the Araneidae is the Diving Spider, <em>Argyroneta aquatica</em>, which weaves itself a curious little bell-shaped dwelling at the bottom of the water, to which it retires to devor its prey." &mdash; Goodrich, 1859

Spider, diving

"Another remarkable member of the Araneidae is the Diving Spider, Argyroneta aquatica, which…