Dromogomphus spinosus

Selys, 1854

black-shouldered spinyleg

Dromogomphus spinosus, commonly known as the black-shouldered spinyleg, is a medium-sized in the Gomphidae. average 64 mm in length. The is distinguished by prominent black shoulder patches, long spines on the legs used for prey capture, and a clubbed with yellow lateral markings. It occurs across eastern North America from southern Manitoba to Florida.

Dromogomphus spinosus P1150179a by 
xpda. Used under a CC BY-SA 4.0 license.Dromogomphus spinosus P1150177a by 
xpda. Used under a CC BY-SA 4.0 license.Dromogomphus spinosus P1150156a by 
xpda. Used under a CC BY-SA 4.0 license.

Pronunciation

How to pronounce Dromogomphus spinosus: //ˌdroʊmoʊˈɡɒmfəs spɪˈnoʊsəs//

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Identification

Look for the combination of black shoulders, green I-shaped thoracic mark with pale ovals, and clubbed with yellow lateral markings. The long leg spines are characteristic of spinylegs but require close observation. Distinguished from other Dromogomphus by the specific pattern of thoracic markings and abdominal club coloration.

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Distribution

Eastern North America from southern Manitoba to the east coast of the United States, south to Florida.

Seasonality

period from late May to early September.

Behavior

Uses long leg spines to capture prey.

Similar Taxa

  • Other Dromogomphus speciesShare the spinyleg trait of long leg spines, but differ in thoracic marking patterns and abdominal club coloration.

More Details

Etymology

The specific epithet 'spinosus' and 'spinyleg' both refer to the long spines on the legs.

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Sources and further reading