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Spotted Cucumber Beetle

Diabrotica undecimpunctata

Description:

AKA Southern Corn Rootworm (in the larval stage). Adults variously reported as between 5 - 9mm long. Larvae to 8mm. Adults yellow to green with eleven black spots on the elytra. undecimpunctata, the abdomen is greenish-yellow with 11 black spots on the elytra. The head, antennae and legs are entirely black or with some greenish-yellow. Life Cycle = Overwinters as an adult in southern states. Eggs are laid at soil surface or below at the base of food plants. Larvae hatch in 7 - 10 days and feed for three to six weeks. The larvae pupate at the base of host plants and emerge as adults in 1-2 weeks.

Habitat:

They are widely dist. except n. Rocky Mtns. Larvae feed on roots of a wide range of plants, including many field crops.

Notes:

Found under the porch light. This landed on me several times so it is harmless and it didn't mind me stalking it. ") Considered a major pest of many field crops including cucumbers and other squashes, corn, soy. Beetles also transmit crop diseases such as bacterial wilt. Adults also reported damaging to garden plants including hibiscus, roses.

1 species ID suggestions

Aaron_G
Aaron_G 6 months ago
Spotted cucumber beetle
Diabrotica undecimpunctata Species Diabrotica undecimpunctata - Spotted Cucumber Beetle - BugGuide.Net

3 Comments

nexttogone
nexttogone 6 months ago

Thank you for the ID, Aaron. @ RiekoS, I saw the bright colors and my first thought was maybe some type of blister bug. Thank you ") @ Leuba, Thank you also. It was very interesting.

Leuba
Leuba 6 months ago

every bit of it looks interesting - what a great spotting !

RiekoS
RiekoS 6 months ago

Unlike some of dangerous looking spiders, this looks 100% harmless to us human beings and cute. Thank you very much for posting.

Bandera, Texas, USA

Lat: 29.73, Long: -99.07

Spotted on Oct 25, 2012
Submitted on Oct 25, 2012

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