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