Dr. Green Thumb Identification

Tree, Plant, Flower & Insect Identification

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Order Coleoptera: (Beetles & Weevils)

                                                               

 
 
 

Sub Order: Adephaga (Members have simple feelers with no pectination or clubs).

 Family: Carabidae (ground beetles)
  Adults & Larvae are predaceous on insects & snails, commonly found in leaf litter.
  Large bulbous eyes, elytra has ridges & rows, antennae between base of mandibles & eyes.
 
 Sub Famiy:  Cicindellidae (tiger beetles)
  Eyes large/bulbous, large toothed mandibles, elytra often patterned.
  Antennae above base of mandibles.
 
  Filiform antennae, no metasternal spine, use there hind legs like oars.
  They carry air under there Elytra & there head hangs down.
 
 
 
 
   Sub Order:  Polyphaga

 (Hind coxa not divided by 1st & 2nd abdominal plate called sternites, and  the notopleural suture is not present).

 Family: Buprestidae (metallic wood boring beetles)
Body is bullet shaped, cuticle with a metallic sheen, copper-like, or bronze & have short antennae.  Larvae attach to weakend trees by boring into the phloem, bark or roots,  & leave D-shaped exit holes.
 Family: Cantharidae (soldier beetles)
Black with orange, yellow or red. Elytra is leathery. Antennae thread-like. Body is elongated/parallel sided.  Adults commonly found in flowers feeding on  pollen.
 
 Family: C erambycidae (long horned beetles)
Very long antennae, notched eyes, 3rd tarsal is bi-lobed. Larvae feed under bark in trees & have rounded heads which leave round exit holes. 
 
 Family: Chrysomelidae (leaf, potatoe & cucumber beetles)
Adults feed on leaves & are common agricultural pests. Small/Medium size 20mm or  less. Antennae less then half the length of body, 3rd tarsal segment bi-lobed.
 Family: Coccinellidae (lady bird beetles)
Larvae & Adults voracious predators on small insects (Aphids/Homopterans). Small size less than 10mm, body oval to round, antennae short, 3-6 segments forming a club.
 Family: Curculionidae (weevils)

Larvae feed within plants in the buds, stems, roots & seeds. Adults chew plant parts. Short or long snout, antennae elbowed with 3 segments forming a club & antennae arise middle of snout.  

 
 
Family: Elateridae (click beetles) 

Prothorax jerks/clicks, which may help escape from a grasping preditor. Feed on roots & seeds, few are agricultural pests, antennae usually sawtoothed.

 Family: Hydrophilidae (water scavenger beetles)

Clubbed antennae, metasternal spine is present, hind legs move alternately. Carry a  bubble of air on there abdomen & there heads do not hang down like the Dyticids.

 Family: Lampyridae (lightning bugs & fireflies)
Light flashing is used for sexual communication, antennae thread-like or sawtoothed. Elytra is leathery, preditory, feed on snails.
 
 
 Family: Lucanidae (stag beetles)
Lavae bore into dead or decaying wood of logs & stumps. Black to red-brown in color, antennae elbowed with 3-4 segments forming a club.
 Family: Lyctidae (Powderpost Beetles) 
Very small to microscopic, orange to red in color, damage interior sapwood & heartwood. Interior wood reduced to fine, flour-like powder, leaves numerous small exit holes.
 Family: Meloidae (blister beetles)
Adults feed on flowers & leaves. Adults protected by Canthardin which causes blisters. Elytra soft & leathery, antennae thread-like or bead-like.  Mostly black in color.
 
 
 Family: Nitidulidae (sap beetles)
Very small, only 1-12mm, antennae club is abrupt & 3-segmented & also ball-like. Elytra is usually non-striate, color is a dull black to yellowish brown, sometimes have yellow or orange. 
 Family: Scarabaeidae (scarab beetles)

Adult antennae  have layered clubs, front tibia enlarged with spines, body size often  12mm.

Larvae are heavy bodied, light colored & C-shaped, often called white grubs.
 Family: Scolytidae (bark beetles)

Very, very small, have a chunk bitten off of elytra.   Have short antennae and often feed on dead decaying trees.

 
 
 Family: Silphidae (Carrion Beetles)
Adults are predaceous feeding on fly larvae on carrion (dead vertebrates). Elytra slightly/moderately short exposing tip of abdomen, clubbed antennae, clubbed/feathery feet. 
 Family: Staphilinidae (Rove Beetles)

   Live in a variety of habitats, larvae & adults are predaceous. Adults run withtip of abdomen up, they don't sting but some bite.

 Family: Tenebrionidae (darkling beetles) 

Adults are very tiny, slender, red-black-brown, with clubed antennae that are thread-like or bead-like. Notched eyes (keel-like ridge on head), pests of flour, dried fruits, nuts, spices, drugs, chocolate.