This beetle probably mimics the Australian hornet (Abispa australis).
The eggs deposited by the beetle in the ground develop into yellowish-brown wire-like grubs with six legs on the first three segments and a ventral prominence on the anal segment.
Insects are numerous, and of about 500 species of beetle some 80% are not known to exist elsewhere; cockroaches and green locusts are pests, as are, also, mosquitoes,' wasps, scorpions, centipedes and white ants, which have all been introduced from elsewhere.
Similar modification of the antennae in the Longicorn Estigmenida variabilis brings about the resemblance between this beetle and a beetle, Estigmena chinensis, one of the Phytophaga of the family Hispidae.
When beetles, or medusae, or cats vary, the range of possible variation is limited and determined by the beetle, medusa or cat constitution, and any possible further differentiation or specialization must be in a sense at least orthogenetic - that is to say, a continuation of the line along which the ancestors of the individual in question have been forced.
In the nests of Bombi are found various beetle larvae that live as inquilines or parasites, and also maggots of drone-flies (V olucella), which act as scavengers; the Volucella-fly is usually a" mimic ' vades.
In the same island a species of Gryllacris mimics Pheropsophus aquatus, a " Bombardier " beetle which ejects a puff of volatile formic acid when attacked; and Condylodera tricondyloides mimics different species of tiger-beetles (Cicindelidae) at different stages of its growth.
The front wings of the wasp have a conspicuous white patch near the tip and a patch similar in size and colour is present on the wings of the beetle, which, unlike the majority of beetles, habitually keeps its wings extended, and since the elytra are exceptionally short the wings are not covered by them when folded.
There are many varieties of beetle, including a number of species representing the scarabaeus of the ancients.
A, Beetle; b, head of beetle with feelers and palps; c, larva; d, pupa.
For example, the grub of a pea or bean beetle (Bruchus) is hatched, from the egg laid by its mother on the carpel of a leguminous flower, with three pairs of legs and spiny processes on the prothorax.
Boring grub of a longhorn-beetle or of the saw-fly Sires, with its stumpy vestiges of thoracic legs; the large-headed but entirely legless, fleshy grub of a weevil; and the legless larva, with greatly reduced head, of a bee.
When on the watch for prey the spider slightly raises the lid and, peeping through the chink, darts like a flash upon any beetle or fly that unwittingly passes within reach.
A species of beetle (Caria dilatator) of this family in Borneo is mimicked by a species of a genus allied to Gammarotettix not only in shape and coloration but also in the habit of remaining still when disturbed.
Among these the beetle Balaninus nucum, the nut-weevil, seen on hazel and oak stems from the end of May till July, is highly destructive to the nuts.
An account of Colorado agriculture would not be complete without mentioning the depredations of the grasshopper, which are at times extraordinarily destructive, as also of the "Colorado Beetle" (Doryphora decemlineata), or common potato-bug, which has extended its fatal activities eastward throughout the prairie states.
P. sylvestris in Britain is liable to many insect depredations: the pine-chafer, Hylurgus piniperda, is destructive in some places, the larva of this beetle feeding on the young succulent shoots, especially in young plantations; Hylobius abietis, the fir-weevil, eats away the bark, and numerous lepidopterous larvae devour the leaves; the pine-sawfly is also injurious in some seasons; the removal of all dead branches from the trees and from the ground beneath them is recommended, as most of these insects lay their eggs among the decaying bark and dead leaves.
The so-called "beetle-stones" of the coal-formation of Newhaven, near Leith, which have mostly a coprolite nucleus, have been applied to various ornamental purposes by lapidaries.
A, Beetle; b, head of beetle with feelers and palps; c, larva; d, pupa.
Similarly the newly-hatched larva of an oil-beetle (Meloe) is an active little campodeiform insect, which, hatched from an egg laid among plants, waits to attach itself to a passing bee.
Such larvae, and also many with soft cuticle and swollen abdomen - those of the notorious "Colorado beetle," for example - feed openly FIG.
In Great Britain the beetle, after completing its development, winters in the seed, waiting to emerge and lay its eggs on the blossom in the ensuing spring.
- (Pea Beetle.) Europe.
Usually the mother-beetle makes a fairly straight tunnel along which, at short intervals, she lays her eggs.
- A, Wireworm; B, pupa of Click Beetle; C, adult Click Beetle (Agriotes lineatum).
The former attacks apple and pear; the latter, which selects orange and citron, was introduced into America from Australia, and carried ruin before it in some orange districts until its natural enemy, the lady-bird beetle, Vedalia cardinalis, was also imported.
Kowalevsky or a bug is invaginated into the yolk at the head end, the portion of (1871 and 1887) on the embryology of the water-beetle Hydrophilus the blastoderm necessarily pushed in with it forming the amnion.
In the Colorado beetle (Doryphora), whose development has been studied by W.
25) - a vermiform podeiform Larva of larva, with soft, white, feebly-chitinized a Ground-Beetle cuticle and without either head-capsule (A epus marinus).
(The feelers and legs are cut short.) years; (2) certain stages of the life that are naturally " resting stages " may be in exceptional cases prolonged, and that to a very great extent; in this case no food is taken, and the activity of the individual is almost nil; (3) the life of certain insects in the adult state may be much prolonged if celibacy be maintained; a female of Cybister roeselii (a large water-beetle) has lived five and a half years in the adult state in captivity.
Moniliformis has for its larval host the larvae of the beetle Blaps mucronata, for its final host certain mice, if introduced into man it lives well: E.
The flex nitive animal gods are not to be confused with the animal not ns ascribed to many cosmic deities; thus when the sun-god Osii was pictured as a scarabaeus, or dung-beetle, rolling its ball Isis lung behind it, this was certainly mere poetical imagery.
A good illustration of wasp-mimicry is furnished by a large heteromerous beetle (Coloborhombus fasciatipennis) from Borneo which is remarkably like a large wasp (Mygnimia aviculus) from the same island.
In Borneo the Hoinopteron Issus bruchoides mimics a species of Curculionid beetle of the genus Alcides.
There is also an American beetle, the Ambrosia beetle, belonging to the family of Swlytidae, which derives its name from its curious cultivation of a succulent fungus, called ambrosia.
Again, galls may afford harbour to insects which are not essentially gall-feeders, as in the case of the Curculio beetle Conotrachelius nenuphar, Hbst., of which one brood eats the fleshy part of the plum and peach, and another lives in the " black knot " of the plum-tree, regarded by Walsh as probably a true cecidomyidous gall.
The adjective "beetle-browed," and similarly "beetling" (of a cliff), are derived from the name of the insect.
Betel, connected with "beat") comes "beetle" in the sense of a mallet, and the "beetling-machine," which subjects fabrics to a hammering process.
The " tobacco flea-beetle " (Epitrix parvula, Fabr.) is a small active beetle, the larvae of which attack the roots, while the adult beetles eat holes in the leaves.
The latter is the more serious, as in addition to the actual damage done by the beetle the holes afford entrance to fungus spores, &c. Under the name " horn worms " are included the larvae or caterpillars of species of Protoparce.
Stored tobacco is liable to be attacked and ruined by the " cigarette beetle," a cosmopolitan insect of very varied tastes, feeding not only on dried tobacco of all kinds, including snuff, but also on rhubarb, cayenne pepper, tumeric, ginger, figs and herbarium specimens.
51) are those of a terrestrial Arthropod, such as a beetle; whilst those of the Silurian scorpion are the legs of an aquatic Arthropod, such as a crab or lobster.