caterpillars caterpillars are the l

caterpillars
caterpillars are the larval from of a member of the order lepidoptera (the insect order comprising butterflies and moths. they aremostly herbiyrous in food habit, with some species being insectivorous. caterpillars are voracious feeders and many of them are considered pests in agriculture. many moth species are better known in their caterpillar stages because ofthe damage they cause to fruits and other agriculture produce.
the etymological origins of the word are from the early 16th century, from middle english catirpel, catirpeller, probably an altertion of old north french catepelose : cate, cat (from latin cattus)+ pelose, hairy (from latin pilosus)
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most caterpillars have tubular, segmented bodies. they have three pairs of true legs on the three thoracic segments, up to four pairs of prolegs on the middle segments of the abdomen, and often a single pais of prolegs on the last abdominal segment. there are ten abdominal segments. the families of lepidoptera differ in the numbers and positioning of the prolegs. some caterpillars are fuzzy (which means they have hair)and they are most likely to cause itching of the hands if touched.
caterpillars grow through a series of moults; each intermediate stage is called an instar. the last moult takes them into the inactive pupul or chrysalis stage.
like all insects, caterpillars brathe through a series of small openings along the sides of their thorax and abdomen called spiracles. these branch into the body cavity into a network of tracheae. a few caterpillars of the family pyralidae are aquatic and have gills that let them brethe underwater.
caterpillars have about 4,000 muscles (compare humans, with 629). they move through contraction of the muscles in the rear segments pushing the blood forward into the front segments elongating the torso. the average caterpillar has 248 muscles in the head segment alone

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ulat ulat yang larva dari anggota lepidoptera urutan (urutan serangga yang terdiri dari kupu-kupu dan ngengat mereka aremostly herbiyrous dalam makanan kebiasaan, dengan beberapa spesies yang menjadi pemakan serangga. ulat pengumpan rakus dan banyak dari mereka yang dianggap hama pada pertanian. banyak spesies ngengat lebih dikenal di tahap ulat mereka karena kerusakan mereka menyebabkan buah dan menghasilkan pertanian lainnya. asal-usul etimologis kata berasal dari awal abad 16, dari bahasa Inggris pertengahan catirpel, catirpeller, mungkin altertion tua utara Perancis catepelose: cate, cat (dari bahasa latin cattus) + pelose, berbulu (dari bahasa latin pilosus). Kebanyakan ulat memiliki tubuh berbentuk tabung, tersegmentasi. mereka memiliki tiga pasang benar kaki tiga segmen toraks, hingga empat pasang prolegs pada segmen menengah perut, dan sering pais tunggal dari prolegs pada perut segmen terakhir. ada sepuluh segmen perut. Keluarga lepidoptera berbeda dalam angka-angka dan posisi prolegs. ulat beberapa kabur (yang berarti mereka memiliki rambut) dan mereka cenderung menyebabkan gatal-gatal tangan jika disentuh. ulat tumbuh melalui serangkaian moults; setiap tahap menengah disebut instar. moult terakhir membawa mereka ke dalam tahap aktif pupul atau kepompong. seperti semua serangga, ulat brathe melalui serangkaian lubang kecil sepanjang sisi thorax dan perut mereka disebut spiracles. ini cabang ke rongga tubuh ke jaringan tracheae. beberapa ulat dari pyralidae keluarga perairan dan memiliki insang yang membiarkan mereka brethe bawah air. ulat memiliki otot-otot sekitar 4.000 (bandingkan manusia, dengan 629). mereka bergerak melalui kontraksi otot-otot di belakang segmen mendorong darah maju ke depan segmen elongating batang tubuh. ulat rata-rata memiliki 248 otot di segmen kepala sendiri