Key to known species of Larnaca from China

1 Body blackish brown; posterior margin of male subgenital plate with a distinctly V-shaped notch.................................................. ..................................................................................................................... Larnaca (Larnaca) emarginata Bian, Guo & Shi, 2015

- Body yellowish brown with some black spots on head and pronotum; apical half of male subgenital plate nearly trapezoid, posterior margin almost straight .......................................................................................................... Larnaca (Larnaca) infolda sp. nov.