GENERAL EXTERNAL ANATOMY Flashcards

1
Q

Body Segments: 3 (head, thorax, and abdomen)

A

Class Insecta

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2
Q

Body Segments: 2 (cephalothorax, abdomen)

A

Class Arachnida

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3
Q

Antennae: Present (2)

A

Class Insecta

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4
Q

Antennae: Absent

A

Class Arachnida

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5
Q

Chelicerae: Absent

A

Class Insecta

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6
Q

Chelicerae: Present (modified mouthparts)

A

Class Arachnida

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7
Q

Wings: Present (1 or 2 pairs) in many species

A

Class Insecta

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8
Q

Wings: Absent

A

Class Arachnida, Lice, Fleas

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9
Q

Legs: 6 (3 pairs)

A

Class Insecta

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10
Q

Legs: 8 (4 pairs)

A

Class Arachnida

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11
Q

Wing Structure: Hard forewings (elytra), leathery, often fused together

A

Beetles

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12
Q

Wing Structure: Membranous, often overlapping but not fused

A

True Bugs

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13
Q

Mouthparts: Chewing

A

Beetles

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14
Q

Mouthparts: Piercing-sucking

A

True Bugs, Mites, Ticks

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15
Q

Metamorphosis: Complete/Holometabolous (egg, larva, pupa, adult)

A

Beetles, Mosquitoes, Houseflies, Butterflies

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16
Q

Metamorphosis: Incomplete/Hemimetabolous (egg, nymph, adult)

A

True Bugs, Grasshoppers, Cockroaches

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17
Q

Sclerites (hard plates): Hard, well-developed exoskeleton

A

Beetles

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18
Q

Sclerites (hard plates): Softer exoskeleton with distinct sclerites

A

True Bugs

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19
Q

Legs: 3 pairs of short, clawed legs

A

Lice

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20
Q

Legs: 3 pairs of long, adapted-for-jumping legs

A

Fleas

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21
Q

Eyes: Reduced or absent

A

Lice

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22
Q

Eyes: Compound eyes

A

Fleas

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23
Q

Antennae: Short, club-shaped

A

Lice, Fleas

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24
Q

Parasitism: Permanent ectoparasites (live on host)

A

Lice

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25
Q

Parasitism: Temporary ectoparasites (feed on host)

A

Fleas

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26
Q

Wings: Narrow, long, covered in scales

A

Mosquitoes

27
Q

Wings: Broad, clear, with a characteristic buzzing sound

A

Flies

28
Q

Mouthparts: Long, slender proboscis for piercing and sucking

A

Mosquitoes

29
Q

Mouthparts: Short, spongy mouthparts for lapping or scraping

A

Flies

30
Q

Antennae: Feathery in males, simple in females

A

Mosquitoes

31
Q

Antennae: Short, bristle-like

A

Flies

32
Q

Resting Position: Body tilted at an angle

A

Mosquitoes

33
Q

Resting Position: Body parallel to the ground

A

Flies

34
Q

Waist: Narrow, constricted “wasp waist” (pedicel)

A

Ants

35
Q

Waist: Smooth, not constricted, broader abdomen

A

Wasps

36
Q

Wings: Membranous, front pair usually larger than back pair

A

Ants

37
Q

Wings: Membranous, all four wings are equal in size

A

Wasps

38
Q

Sociality: Often highly social, forming colonies

A

Ants

39
Q

Sociality: Mostly solitary, some are social with smaller colonies

A

Wasps

40
Q

Stinger: Present in females and queens

A

Ants

41
Q

Stinger: Present in females, used for hunting and defense

A

Wasps

42
Q

Chelicerae: Visible, fang-like mouthparts

A

Spiders

43
Q

Chelicerae: Tucked under the cephalothorax, pincer-like claws

A

Scorpions

44
Q

Eyes: 8, arranged in various patterns

A

Spiders

45
Q

Eyes: 8, simple eyes on top of cephalothorax

A

Scorpions

46
Q

Spinnerets: Present, used for producing silk

A

Spiders

47
Q

Spinnerets: Absent

A

Scorpions

48
Q

Tail: Soft, segmented abdomen; no tail with venomous stinger

A

Spiders

49
Q

Tail: Hard, segmented tail with a venomous sting at the tip

A

Scorpions

50
Q

Body size: Very small, no distinct body regions; often microscopic

A

Mites

51
Q

Body size: Larger body size (when engorged), distinct head and body regions visible to the naked eye

A

Ticks

52
Q

Legs: Four pairs (8 legs) in larvae
Three pairs (6 legs) in adults

A

Mites

53
Q

Legs: Three pairs (6 legs) in all stages

A

Ticks

54
Q

Life Cycle: Simple metamorphosis (egg, larva, nymph, adult)

A

Mites

55
Q

Life Cycle: Complex metamorphosis (egg, larva, nymph, pupa, adult)

A

Ticks

56
Q

Antennae: Feathery or filamentous, thread-like, often comb-like in males

A

Moths

57
Q

Antennae: Thin, clubbed, or knobbed at the end

A

Butterflies

58
Q

Wings: Broad, often dull colors, held flat at rest

A

Moths

59
Q

Wings: Narrower, often brightly or vibrantly colored, folded vertically at rest

A

Butterflies

60
Q

Activity Time: Primarily nocturnal

A

Moths

61
Q

Activity Time: Primarily diurnal (active during the day)

A

Butterflies

62
Q

Resting Position: Wings held flat over the body; wings spread

A

Moths

63
Q

Resting Position: Wings folded vertically above the body; wings closed upright

A

Butterflies