blatodea (=blattaria, = blattoptera) -...
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Blatodea (=Blattaria, = Blattoptera) - cockroaches
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•About 4000 mainly tropical species, 40 more or less associated with human dwellings as serious pests•Closely allied to Mantodea and Isoptera•Long multisegmented antennae, long cerci, generalised chewing mouthparts, large pronotum, simple (paurometabolic) metamorphosis, large compound eyes, complicated wing venation
•Egg layid in groups –ootheca (egg capsule)•Importance: common household pests, transmit diseases, eat the same as humans, aggresive odour, allergies-asthma,
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Macropanesthia rhinocerosBlaberus
giganteus
Biggest (pet) species –up to 35 g weight
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Blatella germanica
Ectobius – free living
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Isoptera - termites
About 3000 mainly tropical speciesEusocial organisationMajor detritivores of tropics, feed on wood, symbionts, ne based Physogastric femalePheromone based castes
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Order: Ensifera or suborder ofOrthoptera
11 000 species worldwideElongate body, produce sounds (by rubbing their wings against each other)Large pronotum, long multisegmented antennae (more than 30 segments)Jumping third pair of legsTympanum (ears) on base of fore tibiaeLarge compound eyesFirst pair of wing hardened, second with anal lobe – complicated venationPaurometabolyLong ovipositor with coapted valvulaeMosty predators
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Tettigonioidea
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Gryllotalpoidea
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Grylloidea
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Order: Caelifera or suborder ofOrhoptera
11 000 species worldwideElongate body, produce sounds (by rubbing hind legs against wings)Large pronotum, short antennae (less than 30 segments)Saltatorial hind limbsTympanum (ears) on sides of abdomenFirst pair of wing hardened, second with anal lobe – complicated venationPaurometabolyShort ovipositorExclusive herbivors
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Migratory locusts Several species of short-horned
grasshoppers of the family Acrididaethat are characterized by having a swarming (gregarious) phase in addition to a solitary phase. These can be highly destructive and migrate in a more or less coordinated way.
Locust swarms can cause massive damage to crops. Important locust species include Schistocerca gregariaand Locusta migratoria in Africa and the Middle East, and Schistocercapiceifrons in Mesoamerica
A single swarms larger than any other single congregation of organisms on Earth, ranging from 100,000 to 10 billion insects
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PhasmatodeaMore than 3 000 speciesLarge and often elongate body, cryptic mimicry, chewing mouthparts, often winglessPaurometaboly, partenogenesis commonMany are pet animals (Carausius morosus)
all species are herbivorous, rarely pests
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Heteropteryx dilatata (up to 60 g weight)
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Dermaptera - earwigs1 800 speciesBlattoid order, eggs layed single, maternal carePincer-like cerci, mesothoracic wings elytrae-like, metathoracic membraneous or absentHerbivorous, predatory or omnivorous
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Parasitic suborders Arixeniina and Hemimerina
Forficulina
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Mantodea
2 200 species, mostly tropical, blattoid order, allied to cockroaches, paurometaboly (egg capsules), chewing mouthparts, primitive wing venationCryptic predators, large bodies, sexual cannibalism
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