Beetle Dichotomous Key

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Beetle Dichotomous Key

Antennas are straight or point away from the front of the beetle's head

Forelegs are not longer or equal in length to hindlegs

Tip of head is not rounded

Red-necked cane borer

Tip of head is rounded

Predaceous diving beetle

Forelegs are longer or equal in length to hindlegs

Abdomen does not have white marks

Prothorax is not wider than head

Monterey cyprus beetle

Prothorax is wider than head

Mycetaeid beetle

Abdomen has white marks

White-marked spider beetle

Forelegs are not longer in length than hindlegs

End of abdomen is not rounded

Flathead apple borer

Iron clad beetle

End of abdomen is rounded

Blind ant-beetle

Forelegs are longer in length than hindlegs

Abdomen is not black

Variegated mud-loving beetle

Abdomen is black

Whirligig beetle

Antennas are not straight or do not point away from in front of the beetle's head

Antennas are longer or roughly equal in length to forelegs

Mandibles do not clearly protrude

Does not have three body segments

Drug store beetle

Has three body segments

Red flour beetle

Mandibles clearly protrude

Prothorax is as wide as abdomen

Broad-horned flour beetle

Prothorax is not as wide as abdomen

Water tiger

Antennas are not longer or roughly equal in length to forelegs

Prothorax is about as long vertically as it is horizontally

Abdomen is completely black

False wireworm beetle

Abdomen is not completely black

Crawling water beetle

Prothorax is not about as long vertically as it is horizontally

Abdomen does not have striped pattern horizontally

Apricot borer

Abdomen has striped pattern horizontally

Cucumber snout beetle