Showing posts with label INSECT. Show all posts
Showing posts with label INSECT. Show all posts

Saturday, July 26, 2014

Crickets of the Manferrara forest - Pomarico (MT)




  Pictures by SPERA GERARDO - POMARICO (ITALY)

Tuesday, July 1, 2014

Dragonfly (Pomarico MT)




 Pictures by SPERA GERARDO - POMARICO (ITALY)

Thursday, June 4, 2009

SUMMER 2009

Da Flowers Pomarico Magg

SUMMER SERENADE
When the thunder stalks the sky, When tickle-footed walks the fly, When shirt is wet and throat is dry, Look, my darling, thats July. Through the grassy lawn be leather, And prickly temper tug the tether, Shall we postpone our love for weather? If we must melt, lets melt together!
Ogden Nash

Da PAESAGGI POMARICO (ITALY) III

ROSES

You love the roses - so do I. I wish They sky would rain down roses, as they rain From off the shaken bush. Why will it not? Then all the valley would be pink and white And soft to tread on. They would fall as light As feathers, smelling sweet; and it would be Like sleeping and like waking, all at once!

George Eliot 1819-1880

Pictures taken By Spera Gerardo at Pomarico

Tuesday, September 16, 2008

SPIDERS

Spiders are predatory invertebrate animals that have two body segments, eight legs, no chewing mouth parts and no wings. They are classified in the order Araneae, one of several orders within the larger class of arachnids, a group that also contains scorpions, whip scorpions, mites, ticks, and opiliones (harvestmen). The study of spiders is called arachnology.

All spiders produce silk, a thin, strong protein strand extruded by the spider from spinnerets most commonly found on the end of the abdomen. Many species use it to trap insects in webs, although there are also many species that hunt freely. Silk can be used to aid in climbing, form smooth walls for burrows, build egg sacs, wrap prey, and temporarily hold sperm, among other applications. All spiders except those in the families Uloboridae and Holarchaeidae, and in the suborder Mesothelae (together about 350 species) can inject venom to protect themselves or to kill prey. Only about 200 species, however, have bites that can pose health problems to humans. Many larger species' bites may be quite painful, but will not produce lasting health concerns.
Prosoma
All spiders have eight legs, although a few ant-mimicking species use their front legs to imitate antennae, which spiders lack. Their eyes are single lenses rather than compound eyes, ranging from simple light/dark-receptors to eyes rivaling those of a pigeon (some jumping spiders).
They have pedipalps (or just palps), at the base of which are coxae or maxillae next to their mouth that aid in ingesting food; the ends of the palp are modified in adult males into elaborate and often species-specific structures used for mating. Since they have no antennae, they use specialised and sensitive hairs on their legs to pick up scent, sounds, vibrations and air currents.
Sense organs
Spiders usually have eight eyes in various arrangements, a fact that is used to aid in taxonomically classifying different species. Most species of the Haplogynae have six eyes, although some have eight (Plectreuridae), four (eg., Tetrablemma) or even two (most Caponiidae) eyes. Sometimes one pair of eyes is better developed than the rest, or even, in some cave species, there are no eyes at all. Several families of hunting spiders, such as jumping spiders and wolf spiders, have fair to excellent vision. The main pair of eyes in jumping spiders even see in color. Net-casting spiders have enormous, compound lenses that give a wide field of view and gather available light very efficiently.
However, most spiders that lurk on flowers, webs, and other fixed locations waiting for prey tend to have very poor eyesight; instead they possess an extreme sensitivity to vibrations, which aids in prey capture. Vibration sensitive spiders can sense vibrations from such various mediums as the water surface, the soil or their silk threads. Also changes in the air pressure can be detected in the search for prey.

Pictures taken By Spera Gerardo at Pomarico (Italy)

DRAGONFLY

A dragonfly is a type of insect belonging to the order Odonata, the suborder Epiprocta or, in the strict sense, the infraorder Anisoptera. It is characterized by large multifaceted eyes, two pairs of strong, transparent wings, and an elongated body. Dragonflies are similar to damselflies, but the adults can be differentiated by the fact that the wings of most dragonflies are held away from, and perpendicular to, the body when at rest.
Dragonflies typically eat mosquitoes, and other small insects like flies, bees, ants and butterflies. They are therefore valued as predators, since they help control populations of harmful insects. Dragonflies are usually found around lakes, ponds, streams and wetlands because their larvae, known as "nymphs", are aquatic. Adult dragonflies do not bite or sting humans, though nymphs are capable of delivering a painful (though otherwise harmless) bite.

Dragonfly characteristics
Male Dragonflies are capable of hovering followed by rapid acceleration. Giant dragonflies can glide for 20 meters at 10 degrees and a speed of 74 cm per second which is similar to some birds.They capture their prey by clasping them in legs studded with spikes. Prey cannot escape by diving away because dragonflies always attack from below.
Life cycle
Female dragonflies lay eggs in or near water, often on floating or emergent plants. When laying eggs, some species will submerge themselves completely in order to lay their eggs on a good surface. Most of a dragonfly's life is spent in the naiad (that is, nymph) form, beneath the water's surface, using internal gills to breathe, and using extendable jaws to catch other invertebrates or even vertebrates such as tadpoles, fish, etc. Some nymphs even hunt on land, an aptitude which could easily have been more common in ancient times when terrestrial predators were clumsier. The larval stage of large dragonflies may last as long as five years. In smaller species, this stage may last between two months and three years. When the larva is ready to metamorphose into an adult, it climbs up a reed or other emergent plant at night. Exposure to air causes the larvae to begin breathing. The skin splits at a weak spot behind the head and the adult dragonfly crawls out of its old larval skin, waits for the sun to rise, pumps up its wings, and flies off to feed on midges and flies. The adult stage of larger species of dragonfly can last as long as four months.
Pictures taken By Spera Gerardo at Pomarico (Italy)

Monday, September 15, 2008

BUTTERFLY

These butterflies I found in the woods around the manferrara and I assure you it was difficult to approach. They move quickly and are really sensitive to noise.
A butterfly is an insect of the order Lepidoptera. Like all Lepidoptera, butterflies are notable for their unusual life cycle with a larval caterpillar stage, an inactive pupal stage, and a spectacular metamorphosis into a familiar and colourful winged adult form. Most species are day-flying so they regularly attract attention. The diverse patterns formed by their brightly coloured wings and their erratic yet graceful flight have made butterfly watching a fairly popular hobby.
http://picasaweb.google.com/dinospera/PAESAGGIPOMARICOITALYIII

Butterflies comprise the true butterflies (superfamily Papilionoidea), the skippers (Superfamily Hesperioidea) and the moth-butterflies (Superfamily Hedyloidea). Butterflies exhibit polymorphism, mimicry and aposematism. Some are known to migrate over large distances. Some butterflies have evolved symbiotic and parasitic relationships with social insects such as ants. Butterflies are important economically as one of the major agents of pollination. In addition, a number of species are pests, because they can damage domestic crops and trees.
Pictures taken By Spera Gerardo at Pomarico (Italy)

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