Insect Families 3

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Insect Families 3

• Coleoptera
• BEETLEMANIA!

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Quiz Q1 What FAMILY do these wings belong to?
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Q2

• List the family names you are required to know
  for the suborder Anisoptera (there are 4)

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Q3 What FAMILY is this?
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Q4

• A) What is the family name for Katydids?
• B) Name TWO differences between Katydids and the
  family Acrididae
• C) You know 3 families that start with Gryll-
  What are they?

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Q5

• How would I tell the difference between these two
  insects, if I wasnt sure?

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Q6

• How could I tell the difference between these two
  insects, if I wasnt sure?

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Q7 Name the Family
B
A
C
D
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Collection Reminder

• Today is April 6th.
• Your collections are due May 6th.
• In two weeks (April 20th), you will turn into me
  10 orders and 18 families, properly curated and
  labeled, for a quiz grade. This is for your own
  good! I will correct any errors you are making.
  
• Next week we will go to Hornsby during lab time,
  and Stengl Lost Pines on the weekend. If you
  arent in collection mode, get that way.

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O Coleoptera

• Two Suborders
• Adephaga (3 families)
• Carabidae
• Dytiscidae
• Gyrinidae

Polyphaga (14 families) Buprestidae Cerambycidae C
hrysomelidae Coccinellidae Curculionidae Dermestid
ae Elateridae Hydrophilidae Lampyridae Meloidae Sc
arabaeidae Scolytidae Staphylinidae Tenebrionidae
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Adephaga

• First abdominal sternite divided by hind coxae
• Presence of distinct notopleural suture (junction
  between the notum and the pleuron)

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F Carabidae

• Ground Beetles
• Head at eyes nearly always narrower than
  pronotum.
• Antennae threadlike, inserted between mandibles
  and eyes.
• Generally black and shiny with striate elytra,
  but sometimes metallic or colorful
• 5-5-5 tarsal formula
• Often noctural, dont confuse with Tenebrionidae

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F Dytiscidae

• Predaceous Diving Beetles (aquatic)
• Distinctive shape, elongate-oval range from 1.2
  to 40 mm in length.
• Hind legs flattened and fringed for swimming.
• Antennae threadlike, longer than maxillary palps
• Tarsi mostly 5-5-5.
• Trap air under the elytra to breathe underwater
• Dont confuse with Hydrophilidae

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F Gyrinidae

• Whirligig Beetles (aquatic)
• Short, clubbed antennae.
• Looks like 2 pairs of eyes, 1 above and 1 below
  the water level.
• Forelegs long and thin middle and hind legs
  short and paddlelike, not extending beyond margin
  of abdomen (only front legs visible in dorsal
  view).
• body elongate-oval and flattened, 3 to 15 mm in
  length.
• Tarsi 5-5-5.
• Common name comes from behavior of whirling
  like way of swimming
• Adults live near surface, larvae are aquatic
  predators.

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Polyphaga

• Hind coxae do NOT divide 1st abdominal segment
• Notopleural suture generally absent

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F Buprestidae

• Metallic Wood-Boring beetles
• Hard bodied, elongate-slender to elongate-robust
  beetles, ranging from 2 to 40 mm in length.
• Many species metallic or bronzed in appearance,
  especially on the ventral surface.
• Antennae usually short and sawtoothed.
• Tarsi 5-5-5.
• Body shape somewhat characteristic
• Dont confuse with Elateridae

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F Cerambycidae

• Long-horned beetles
• Long filiform antennae, ranging from one-half to
  over two times the length of the body.
• Body usually elongate and cylindrical 2- to
  60-mm in length.
• Often brightly colored
• Eyes generally notched with antenna arising
  within the notch.
• Tarsi apparently 4-4-4, really 5-5-5 with the 4th
  segment small and inconspicuous.
• Dont confuse with Chrysomelids (have similar
  tarsi, but shorter antennae, rounder, and no
  notch in the eye)

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F Chrysomelidae

• Leaf Beetles
• Hard to characterize family- very diverse
• Elongate-subcylindrical to oval shaped beetles,
  1- to 16-mm in length.
• Antennae generally less than 1/2 the length of
  the body.
• Eyes generally not notched.
• Tarsi generally appear 4-4-4, actually 5-5-5.

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F Coccinellidae

• Lady bugs, Lady bird beetles
• Most species with distinctive shape, strongly
  convex dorsally and flat ventrally.
• Tarsi appearing 3-3-3, but actually 4-4-4.
• Head often concealed by pronotum.
• Antennae short with a 3- to 6-segmented club.
• Predators of aphids and scale

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F Curculionidae

• Weevils
• Head usually with snout ranging from broad and
  flat in a few species to elongate and narrow in
  most species.
• Antennae usually elbowed and with 3-segmented
  club.
• Length from 0.6 to 35 mm, mostly less than 10 mm
  body often covered with scales.
• Tarsi apparently 4-4-4, actually 5-5-5.
• Can be serious pests or beneficial herbivores,
  depending on species

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F Dermestidae

• Dermestids
• Typically small, 1-12mm
• Body covered in small hairs that rub off easily,
  usually patterned with bands or spots
• Distinctly clubbed antennae
• Larvae Are major pests of stored food (and of
  your collections!), are also useful in skeleton
  cleaning and are used in forensic entomology

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F Elateridae

• Click beetles
• Elongate, parallel-sided beetles, generally
  rounded at each end.
• Pronotum pointed on the posterior corners.
• Prosternum with a spinelike process that fits
  into a groove in the mesosternum.
• Prothorax and mesothorax loosely joined, enabling
  adults to arch, "click," and flip over when they
  are upside down.
• Antennae generally serrate, sometimes filiform or
  pectinate.
• Tarsi 5-5-5.
• Many buprestid species look like elaterids, but
  have the pro- and mesothorax tightly fused rather
  than separated and flexible.

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F Hydrophilidae

• Water Scavenger Beetles (aquatic)
• Antennae with 4-segmented club, usually well
  concealed, shorter than maxillary palps
• Hind legs fringed with "hairs".
• Metasternal spine present
• Adults 1- to 40-mm long body oval or elliptical,
  convex dorsally.
• Tarsi 5-5-5 or 5-4-4.
• Few are found in moist terrestrial habitats
• Larvae are predaceous, adults herbivorous

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F Lampyridae

• Fireflies- not flies!
• Elongate, softbodied beetles, 4.5 - 20 mm in
  length.
• Head concealed from above by flattened pronotum
  (cf Cantharidae).
• Last 2 or 3 abdominal sterna often luminous.
• Tarsi 5-5-5.
• Flashing is part of courtship and mating- light
  produced by an efficient biochemical reaction

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F Meloidae

• Blister Beetles
• Head broad, generally rectangular when viewed
  from above.
• Pronotum cylindrical and narrower than both the
  head and base of elytra.
• Body elongate, soft and somewhat leathery- Elytra
  are not as hard as other beetles
• Antennae filiform or moniliform.
• Tarsi 5-5-4 claw either toothed or lobed.
• Common name comes from the blisters that result
  from an irritating substance they secrete when
  disturbed

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F Scarabaeidae

• Scarab beetles, june beetles, dung beetles
• Robust beetles varying greatly in shape size
  ranging from 2 to 62 mm.
• Distinctive lamellate antennae club generally 3
  to 4 segments (max. 7) and capable of being
  closed tightly.
• Tarsi 5-5-5.
• Front legs with scallop-shaped ridges
• Range in colors from brown to metallic colors

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F Scolytidae

• Bark-beetles
• Cylindrical body
• Elbowed clubbed antennae that are relatively
  small.
• The head is commonly concealed, or partially
  concealed by the pronotum from above.
• Similar to the Curculionidae but distinguished
  from that family by their short (as opposed to
  long) snout and their more elongate, cylindrical
  form.
• In some genera there may be backwardly directed
  spines on the ends of the elytra.
• Can be massive pests on trees

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F Staphylinidae

• Adults elongate-slender, 0.7-25 mm.
• Elytra short, leaving 3 to 6 abdominal segments
  exposed.
• Tarsi usually 5-5-5
• Dont confuse with earwigs- these are beetles!

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F Tenebrionidae

• Darkling Beetles
• Eyes notched by a frontal ridge.
• Antennae usually 11 segmented and filiform,
  moniliform, or weakly clubbed.
• Tarsi 5-5-4 claws simple.
• Body form variable, ranging from elongate to oval
  and smooth to very rough.
• Adults and larvae are scavengers. Mealworms, a
  major pest of stored grain, belong to this
  family.