Below are photos of some delphacid species that are potentially invasive to North America and are known to be of economic interest.  Most photos are of males (females are often paler).

Chilodelphax albifascia (no photos yet)

Delphacodes kuscheli

Dicranotropis hamata

Eumetopina flavipes

Javesella dubia

Laodelphax striatellus

Megadelphax sordidulus

Muellerianella fairmairei

Nilaparvata bakeri (no pictures yet)

Nilaparvata muiri (no pictures yet)

Nilaparvata lugens (this species has been intercepted in the US)

Perkinsiella vastatrix (male top row, female bottom - frons is similar between sexes)

Perkinsiella vitiensis (dorsal and lateral view are females)

Ribautodelphax notabilis (no photos yet)

Sogatella furcifera

Sogatella vibex  (images are of male except last is female frons)

Tarophagus prosperina (no photos yet - quite similar to T. colocasiae).

Tarophagus colocasiae (this species has been intercepted in the US)

Terthron albovittatum

Male

Female brachypter

Female macropter

Unkanodes sapporonus

Unkanodes tanasijevici

Male

Female