External Morphology Of Insects Flashcards by Abby Soriano

Study of insect structures (parts) and functions

Insect Morphology

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How many body regions

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Frontal region for visual and sensory purposes

Head

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Middle region for locomotion or mobility

Thorax

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3 sub-regions of thorax

Prothorax, mesothorax, metathorax

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Where legs are found

Thorax

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Where wings are found

Mesothorax and metathorax

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Posterior region for internal or visceral organs

Abdomen

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Where to find the external parts of genitalia

Tip of abdomen

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Legs of caterpillar

Pseudolegs

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Hearinhn orgam of short horned grasshoppers

Tympanum

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Where is tympanum found in short horned grasshoppers

Each side of first abdominal segment

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Where is tympanum of long horned grasshoppers

On each fore tibia

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Upper lip

Labrum

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Lower lip, with 2 palpi

Labium

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Short antenna-like part

Palpi/palpus

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Sensory lobe inside surface of labrum

Epipharynx

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Tongue-like structure inside mouth of grasshoppers

Hypopharynx

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Mouth type:

Mandibles are tooth-like, suited for solid food

Chewing

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For liquid food

Elongated proboscis

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Mouth type:

Mandibles and maxillae become needle-like stylets, for piercing plant epidermis, sucking liquid food, or animal blood

Piercing-sucking

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Mouth-type:

Wet, sponge-like tip for liquid food, or liquefying solid food then absorbing resulting liquid

Sponging

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Mouth type:

Elongated, and adapted for sucking nectar of flowers without piercing the epidermis

Siphoning

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Moutj-type:

Only one mandible is functional, for scratching leaf surfaces, and exuding sap will be sucked

Rasping-sucking

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Mouth type: | For lapping nectar and for cutting leaves etc.

Chewing-lapping

Mouthpart of thysanura

Chewing

Mouth of odonata

Chewing

Mouth of orthoptera

Chewing

Mouth of blattodea

Chewing

Mouth of isoptera

Chewing

Mouth of thysanoptera

Rasping-sucking

Mouth of hemiptera

Piercing-sucking

Mouth of lepidoptera

Chewing (larvae); siphoning

Mouth of coleoptera

Chewing

Mouth of diptera

Piercing-sucking; sponging

Mouth of hymenoptera

Chewing (ants) chewing-lapping (bees)

Mouth of phthiraptera

Piercing-sucking

Mouth of siphonaptera

Piercing-sucking

Two types of eyes

Simple eyes, compound eyes

Type of eyes used for detecting light from darkness

Simple eyes

Two big eyes with many facets called ommatidia

Compound eyes

Segments of antennae

Scape, pedicel, and the rest are flagellum

Sensory structures ti detect environmental factors, or sometimes for defense

Antennae

Antenna type: | Thread-like

Filiform

Antenna type: clubbed

Clavate

Antenna type: with arista

Aristate

Elbowed antenna

Geniculate

Saw-like antenna

Serrate

Hair-like antenna

Setaceous

Hairy antenna

Plumose

2 insect orders with 2 wings

Diptera, strepsiptera

4 orders with no wings

Protura, collembola, diplura, thysanura

What are found in most wings

Veins

Type of wings with no veins

Elytra

Wing type: uniformly thin, transparent or translucent, generally smooth, some with hairs or scales

Membranous

Lepidoptera wings type

Membranous with scales

Trichoptera wings type

Membranous with hairs

Thick, hard, veinless wings, used for protection not for flying

Elytron/elytra

Combined elytron and membranous

Hemelytron/hemelytra

Type of forewings of beetles, weevils, earwigs

Elytra

Type of forewings of hemiptera

Hemelytra

Wings with margins that are very fine feather-like or hair-like strands

Fringed

Wings of thrips

Fringed

Fine, relatively short wings used for balancing during flight

Halter/halteres

Modified hindwings of diptera

Halteres

Forewings of strepsiptera

Halteres

5 segments of legs

Coxa, trochanter, femur, tibia, tarsus

Do maggots or larvae of diptera have legs

Legs of caterpillars are called

Pseudolegs with crochet (hook-like structures) on their soles

Legs of caterpillar-like larvae of sawflies (hymenoptera)

Pseudolegs, without crochets

Legs for walking, most insects

Ambulatorial

Legs for running

Cursorial

Legs for jumping

Saltatorial

Legs for swimming

Natatorial

Legs for grasping, used by predatory insects?

Raptorial

Legs for digging

Fossorial

Legs for collecting pollen

Corbiculate

Legs of cockroaches, ants

Cursorial

Legs of aquatic bugs, naiads of dragonflies damselflies, plecoptera, etc.

Natatorial

Legs of mantodea, and adult dragonflies, and other predatoey insects

Raptorial

Forelegs of mole crickets, scarab beetles

Fossorial

Hindlegs of bees

Corbiculate

External Morphology Of Insects Flashcards

(82 cards)