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Earwig - Quiz
Contributed by: Myers
  • 1. What is the typical size range for most earwigs?
A) 5–30 centimeters
B) 10–100 millimetres
C) 1–3 inches
D) 7–50 millimetres (1⁄4–2 inches)
  • 2. Which species is the largest extant earwig?
A) Saint Helena earwig (Labidura herculeana)
B) American burrowing earwig
C) Australian giant earwig (Titanolabis colossea)
D) European common earwig
  • 3. What is the maximum recorded length of the possibly extinct Saint Helena earwig?
A) 60 mm
B) 100 mm
C) 50 mm (2 inches)
D) 78 mm (3+1⁄16 inches)
  • 4. What are the forceps-like pincers on an earwig's abdomen called?
A) Ovipositors
B) Antennae
C) Tegmina
D) Cerci
  • 5. What is the primary use of the pincers in earwigs?
A) To capture prey, defend themselves and fold their wings under the short tegmina.
B) For mating rituals
C) For digging burrows
D) For sensing vibrations
  • 6. How do the antennae of earwigs appear?
A) Clubbed with fewer than 5 segments.
B) Spike-like with over 20 segments.
C) Thread-like with at least 10 segments.
D) Feathered and multi-segmented.
  • 7. Which families of earwigs have males with paired penises?
A) Karschiellidae, Pygidicranidae, Diplatyidae, Apachyidae, Anisolabisidae, and Labiduridae.
B) None of the above
C) Only Karschiellidae and Pygidicranidae
D) All earwig families
  • 8. In which family are both penises symmetrical in males?
A) Karschiellidae
B) Pygidicranidae and Diplatyidae.
C) Labiduridae
D) Apachyidae
  • 9. What is the role of forewings in earwigs?
A) To cover the hindwings like the elytra of a beetle.
B) For sensing light
C) For flying long distances
D) For swimming
  • 10. Which suborders of earwigs are wingless and blind?
A) Neodermaptera
B) Dermaptera
C) Pygidicranidae
D) Arixeniina and Hemimerina.
  • 11. What is unique about the wings of earwigs?
A) They have scales like butterflies
B) They can regenerate if damaged
C) Their venation and pattern of folding that requires the use of the cerci.
D) They are brightly colored
  • 12. What is a typical feature of the earwig's neuroendocrine system?
A) It has only one large central ganglion
B) It lacks any ganglia
C) It is similar to that of mammals
D) It consists of a brain, subesophageal ganglion, three thoracic ganglia, and six abdominal ganglia.
  • 13. What do earwigs lack in their digestive system?
A) Gastric caecae.
B) A hindgut
C) A midgut
D) An esophagus
  • 14. Where is the gonopore located in female earwigs?
A) Behind the seventh abdominal segment.
B) At the front of the abdomen
C) On the thorax
D) Near the antennae
  • 15. What type of ovaries do earwigs have?
A) Diploid
B) Monotrophic
C) Polytrophic, with nurse cells and oocytes alternating along the length of the ovariole.
D) No ovaries
  • 16. Which continents do not have earwigs?
A) Antarctica.
B) North America.
C) Australia.
D) Africa.
  • 17. How many molts do earwigs undergo before becoming adults?
A) Five molts.
B) Three molts.
C) No molts, they hatch as adults.
D) Seven molts.
  • 18. When did the suborder Neodermaptera first appear?
A) In the Jurassic period.
B) In the Triassic period.
C) In the Paleozoic era.
D) During the Cretaceous period.
  • 19. Which major grouping does Dermaptera belong to?
A) Polyneoptera.
B) Hemiptera.
C) Coleoptera.
D) Orthoptera.
  • 20. What is the origin of the scientific name 'Dermaptera'?
A) French, meaning 'ear bugs'.
B) German, meaning 'pincer creatures'.
C) Greek, meaning 'skin wings'.
D) Latin, meaning 'winged insects'.
  • 21. Where was the common earwig introduced in North America?
A) Brought over by early settlers from Asia.
B) Introduced from Australia.
C) Native to North America.
D) From Europe in 1907.
  • 22. How many species of earwigs are found in North America?
A) Exactly 50 species.
B) Less than 10 species.
C) About 25 species.
D) Over 100 species.
  • 23. How many earwig species occur in Europe, including Great Britain?
A) 100 species.
B) 25 species.
C) 60 species.
D) 45 species.
  • 24. Which family of earwigs is found in North America and includes the genus Forficula?
A) Labiduridae.
B) Spongiphoridae.
C) Forficulidae.
D) Anisolabididae.
  • 25. What is the scientific order name for earwigs derived from?
A) 'Ear bugs'.
B) 'Skin wings'.
C) 'Pincer insects'.
D) 'Nocturnal flyers'.
  • 26. What type of metamorphosis do earwigs undergo?
A) Hypermetamorphosis
B) No metamorphosis
C) Incomplete metamorphosis
D) Complete metamorphosis
  • 27. Where do earwigs create their chamber for reproduction?
A) On tree leaves
B) In open fields
C) Underwater
D) Debris, crevices, or soil
  • 28. What is the shape of earwig eggs when they are first laid?
A) Oval-shaped
B) Square
C) Round
D) Triangular
  • 29. What type of insect species show maternal care similar to earwigs?
A) Non-social
B) Solitary
C) Social
D) Communal
  • 30. Do earwig mothers immediately recognize their own eggs?
A) Yes
B) No
C) Only after hatching
D) After the first molt
  • 31. What is the typical behavior pattern of most earwigs?
A) Crepuscular
B) Nocturnal
C) Cavernicolous
D) Diurnal
  • 32. Which species of earwig is known to squirt a foul-smelling liquid?
A) Anisolabis maritima
B) Doru taeniatum
C) Forficula auricularia
D) Labidura riparia
  • 33. What maneuver does Doru taeniatum use to aim its defensive discharge?
A) Flicking its tail
B) Jumping
C) Revolving the abdomen
D) Spinning in circles
  • 34. What type of habitat is associated with cavernicolous earwigs?
A) Forests
B) Caves
C) Deserts
D) Grasslands
  • 35. What unusual behavior can earwigs exhibit under exceptional circumstances?
A) Migrating long distances
B) Forming swarms
C) Hibernating
D) Building nests
  • 36. Where did a significant swarm of earwigs occur in August 1755?
A) In the Sahara Desert
B) In the Amazon rainforest
C) On the island of Hawaii
D) Near Stroud, Gloucestershire, UK
  • 37. Which of these animals is known to prey upon earwigs?
A) Birds
B) Dogs
C) Cats
D) Fish
  • 38. What type of larvae are endoparasites that primarily target earwigs?
A) Grasshopper larvae
B) Maggots
C) Tachinid flies
D) Flea larvae
  • 39. Which species of tachinid fly has been used as a biological control for earwigs for almost a century?
A) Triarthria setipennis
B) Vespula maculifrons
C) Mermis nigrescens
D) Ocytata pallipes
  • 40. Which type of wasp preys upon earwigs when they are abundant?
A) European hornet
B) Cicada killer
C) Yellow jacket (Vespula maculifrons)
D) Paper wasp
  • 41. What type of worm occasionally parasitizes earwigs?
A) Fluke
B) Roundworm (Mermis nigrescens)
C) Tapeworm
D) Hookworm
  • 42. How many species of parasitic fungus have been found on earwigs?
A) 10
B) 100
C) 50
D) 26
  • 43. Which type of mite is observed on common earwigs and feeds on their cadavers?
A) Dust mites
B) Scarlet acarine mites
C) Tyroglyphoid mites
D) Histiostoma polypori
  • 44. What is the extinct suborder of early earwigs called?
A) Neodermaptera
B) Archidermaptera
C) Hemimeridae
D) Arixeniidae
  • 45. What is a unique feature of earwigs not found in other insects?
A) Compound eyes
B) Pincers
C) Wings
D) Antennal heart
  • 46. How many segments do the tarsi of adults from the earliest earwig fossils have?
A) Three-segmented
B) Four-segmented
C) Six-segmented
D) Five-segmented
  • 47. Which order is considered a possible close relative of Dermaptera according to a 2012 study?
A) Plecoptera
B) Dictyoptera
C) Blattodea
D) Notoptera
  • 48. Which living order is found to be the closest relative of earwigs in a 2018 phylogenetic analysis?
A) Zoraptera
B) Notoptera
C) Embioptera
D) Phasmatodea
  • 49. What type of organ is the antennal heart in earwigs?
A) Respiratory
B) Circulatory
C) Digestive
D) Reproductive
  • 50. Which order do earwigs belong to?
A) Dermaptera
B) Coleoptera
C) Hemiptera
D) Orthoptera
  • 51. What type of mouthparts do earwigs have?
A) Chewing-type
B) Siphoning-type
C) Piercing-sucking-type
D) Biting-type
  • 52. Are ocelli present in earwigs?
A) Variable presence
B) Present
C) Partially present
D) Absent
  • 53. Which suborder includes the majority of earwig species?
A) Hemimerina
B) Neodermaptera
C) Arixeniina
D) Forficulina
  • 54. What type of species were the first epizoic earwigs?
A) Native to European forests
B) Discovered on a Malaysian hairless bulldog bat
C) Living in South American jungles
D) Found in African deserts
  • 55. Which taxonomist described the first epizoic earwig species?
A) Carolus Linnaeus
B) Alfred Russel Wallace
C) Karl Jordan
D) Charles Darwin
  • 56. What type of parasites are Hemimeridae?
A) Oviparous ectoparasites
B) Free-living and non-parasitic
C) Endoparasites with segmented cerci
D) Viviparous ectoparasites
  • 57. How many families are included in the Dermaptera order, including extinct ones?
A) 5
B) 10
C) 20
D) 15
  • 58. What kind of damage do earwigs cause to plants?
A) Cup-shaped bite marks
B) Root rot
C) Stem girdling
D) Circular holes in leaves
  • 59. In James Joyce's novel Finnegans Wake, what do the initials 'HCE' primarily stand for?
A) Harold Chester Evans
B) Henry Charles Ewing
C) Humphrey Chimpden Earwicker
D) Hugh Calvin Edwards
  • 60. Which short story by Oscar Cook involves the use of an earwig as a murder instrument?
A) "A Century Of Creepy Stories"
B) "The Caterpillar"
C) "Boomerang"
D) "Switch On The Light"
  • 61. Which TV series adapted Oscar Cook's story 'Boomeranger'?
A) Night Gallery
B) Alfred Hitchcock Presents
C) Tales from the Crypt
D) The Twilight Zone
  • 62. What is the alternative name for earwigs in some parts of rural England?
A) "Fighting-antenna"
B) "Battle-twig"
C) "War-worm"
D) "Combat-bug"
  • 63. In which poem by Alfred, Lord Tennyson is the term 'battle-twig' mentioned?
A) The Spinster's Sweet-Arts
B) The Lady of Shalott
C) In Memoriam A.H.H.
D) Ulysses
  • 64. Who is the Japanese cultural entomologist that inferred the meaning of earwig names in Japan?
A) Takashi Sato
B) Hiroshi Nakamura
C) Kenta Takada
D) Yasuo Tanaka
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