6/17/2020
Coleoptera Identifying the Beetles
Who we are: Matt Hamblin [email protected]
Graduate of Kansas State University in Manhattan, KS.
Bachelors of Science in Fisheries, Wildlife and Conservation Biology Minor in Entomology
Began M.S. in Entomology Fall 2018 focusing on Entomology Education
Who we are: Jacqueline Maille
[email protected] Graduate of Kansas State University in Manhattan, KS with M.S. in Entomology.
Austin Peay State University in Clarksville, TN with a Bachelors of Science in Biology, Minor Chemistry
Began Ph.D. iin Entomology with KSU and USDA-SPIERU in Spring 2020 Focusing on Stored Product Pest Sensory Systems and Management
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Who we are: Isaac Fox [email protected]
2016 Kansas 4-H Entomology Award Winner
Pest Scout at Arnold’s Greenhouse
Distribution, Abundance and Diversity
Global distribution
Beetles account for ~25% of all life forms
~390,000 species worldwide
What distinguishes a beetle?
1. Hard forewings called elytra 2. Mandibles move horizontally 3. Antennae with usually 11 or less segments exceptions (Cerambycidae Rhipiceridae) 4. Holometabolous
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Anatomy
Taxonomically Important Features
Amount of tarsi Tarsal spurs/ spines Antennae placement and features Elytra features Eyes Body Form
Antennae Forms
Filiform = thread-like Moniliform = beaded Serrate = sawtoothed Setaceous = bristle-like Lamellate = nested plates Pectinate = comb-like Plumose = long hairs Clavate = gradually clubbed Capitate = abruptly clubbed Aristate = pouch-like with one lateral bristle
Nicrophilus americanus
Silphidae, American Burying Beetle
Counties with protected critical habitats:
Montgomery, Elk, Chautauqua, and Wilson
Red-tipped antennae, red pronotum
The ecological services section, Kansas department of Wildlife, Parks, and Tourism
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Suborders Adephaga vs Polyphaga
Families
~176 described families in the U.S.
~80 in Kansas.
Adephaga
The first abdominal segment is split by the posterior coxa.
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Carabidae Gyrinidae Setaceous, filiform, moniliform, Elliptical body plan serrate antennae Eyes are split into dorsal and Variable body form ventral
0.7-66 mm Aquatic
3-18 mm
Dytiscidae Hydrophilidae No ventral spine Ventral spine
Elliptical body form Elliptical body form
Filiform antennae Short clubbed antennae
0.7-66 mm 1.2-40 mm
Haliplidae Noteridae Distinct platform underneath, in the Oval and convex, dark patches on form of a plate between the elytra second and third pair of legs
Hind coxal plate Elliptical body plan
1.5-5 mm 1-5 mm
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What specimen is NOT in the suborder Adephaga?
Polyphaga
The first abdominal segment is NOT split by the posterior coxa.
Scarabaeidae Lucanidae Geniculated lamellated antennae Clubbed antenna with lamella at tips 1st antennomere longer than next 5 Front tibia enlarged and toothed Large mandibles in both sexes Globular body 8-60 mm 1.5-160 mm
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Geotrupidae Ochodaeidae
11 segmented, lamellated Prominent mandibles, mesotibia antennae with long spur serrate along one edge Globular body Globular body 5-45 mm 4.2-7.5 mm
Hybosoridae Heteroceridae Protruding mandibles, flattened Cupped, lamellate antennae body, & rakelike legs distinctive
Globular body Cigar-shaped body
3-7 mm 2-7 mm
Trogidae Histeridae Head often concealed Lamellated antennae Oval or flat body plan Roughly sculptured, often covered with a crust of soil Elytra short showing 2 abdominal segments from top-view 3-20 mm Elytra with striations
1-20 mm
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Leiodidae Nosodendridae
Two species in our area Oval shaped Capitate antennae Small 8th antennomere < 15 mm < 10 mm
Nitidulidae Ptinidae
Head NOT concealed Not easily defined group
Variable body plan Body plan variable
Elytra short showing 1-3 abdominal Antennae variable segments from top-view 1-9 mm Elytra lack striations Usually <5 mm 0.9-15 mm
Eroytilidae Tetratomidae
Elongated-oval Tarsal formula 5-5-4, and tarsi not lobed underneath Procoxal cavities are closed 2-7 mm 2-22 mm
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Coccinellidae Chrysomelidae Oval, dome shaped Round, elliptical, dome shaped body Tarsi 5-5-5
Tarsi 4-4-4 1-35 mm
0.8-18 mm
Lampyridae Cantharidae Pronotum covers head Pronotum does NOT cover head
Eyes large 4th tarsal segment is lobed
Terminal abdomen segments Luminescence is ABSENT luminescent 5-15 mm 4-18 mm
Meloidae Oedemeridae Tarsi 5-5-4 Tarsi 5-5-4
Filiform or moniliform antennae 11 long filiform, serrate or clavate antennomeres Prothorax narrower than elytra Prothorax without Tarsal claws clefted margins, expanded 3-70 mm anteriorly, then narrowed, sides rounded
5-20 mm
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Cleridae Melyridae Clubbed antennae Serrate antennae
Pronotum narrower than elytra Antennae insert in front of head
Body setose Prominent coxae
2-24 mm 2-7 mm
Anthicidae Elmidae Body elongate resembling ants Long legs with prominent tarsal claws Prominent femurs Found only in fast moving waters Large eyes < 4 mm 2-12 mm
Mordellidae Ripophoridae Tarsi 5-5-4 Tarsi 5-5-4
Simple antennae Flabellate antennae
Wedge-shaped body with a humpback Wedge-shaped, soft elytra
Abdomen comes to a point Abdomen comes to a point
1.5-15 mm 3-15 mm
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Rhipheceridae Phengoididae Antennae branched Antennae flabellate Short soft elytra Nose-like projection between mandibles Females have luminescent larvae like 11-25 mm 15-18 mm
Lycidae Cerambycidae Antennae serrate Antennae inserted on a raised area
Raised reticulated soft elytra Eyes are notched
10-15 mm Tarsi 5-5-5
Setaceous
4-165 mm
Buprestidae Elateridae Antenna never clubbed Antennae usually serrate
Bullet-shaped metallic body Posterior corners of pronotum form sharp points First two abdominal segments are fused Prosternal spine
2-75 mm 0.9-75 mm
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Bostrichidae Dermestidae
Pronotum is hoodlike with spines Short clubbed antennae
Clubbed antennae Body setose (hairy)
Head concealed Head concealed
2-50 mm 1-12 mm
Tenebrionidae Passalidae
Antennae moniliform or clavate Pronotum with medial groove below a shelf Antennae NOT geniculate Body shape highly variable (elbowed)
1-80mm 1st antennomere shorter than next 4
30-40 mm
Silphidae Staphylinidae
Elytra are soft Elongate slender body
Antennae with 11 segments and Elytra shortened with 3-6 capitulate abdominal segments showing in top-view 7-45 mm 1-35 mm
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Passandridae Trogossitidae Unequal tibia spurs on front legs Pronotum wider than head Grooves on head Mandibles typically prominent Compressed body form Highly elongate body Prominent mandibles 2-22 mm 3-35 mm
Monotomidae Cucujidae Very elongate and parallel-sided Flattened elongated body
10 segmented antennae with the 5 abdominal segments last 1-2 segments forming a club 6-25 mm 1.5-6.0 mm
Cupedidae Curculionidae Long snout with small mouthparts Reticulated elytra Geniculate antennae Elongated with parallel sided body Antennae rising from under eyes Broad scale like setae 1-40 mm 10-20 mm
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Anthribidae Brentidae
Broad flat snout Prominent straight snout
Antennae clubbed and NEVER elbowed First two abdominal segments longer than rest 0.4-16 mm Elongate narrow cylindrical body
2-80 mm
The roles beetles play in our ecosystem...
Questions????
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Additional Resources https://bugguide.net/node/view/60 https://entomology.k-state.edu/extension/4-h-and-youth/Guide-to-Insect-Orders/coleoptera.html http://entnemdept.ufl.edu/choate/beetles1a.pdf
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