''Perittopus falciformis'' is a

species A species () is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can produce fertile offspring, typically by sexual reproduction. It is the basic unit of Taxonomy (biology), ...

of riffle bug from

China China, officially the People's Republic of China (PRC), is a country in East Asia. With population of China, a population exceeding 1.4 billion, it is the list of countries by population (United Nations), second-most populous country after ...

, first described in 2013 by Zhen Ye, Pingping Chen and Wenjun Bu, based on apterous specimens collected in

Yunnan Province Yunnan; is an inland Provinces of China, province in Southwestern China. The province spans approximately and has a population of 47.2 million (as of 2020). The capital of the province is Kunming. The province borders the Chinese provinces ...

at an altitude of 1500 m. Winged specimens of either sex are thus far unknown.

Taxonomy

Based on male genital characteristics, ''Perittopus falciformis'' can be placed to the "western species group" in ''Perittopus'', and appears closely related to ''

Perittopus zhengi ''Perittopus zhengi'' is a species of riffle bug from Thailand (Chiang Mai Province). It was described in 2013 by Zhen Ye, Pingping Chen and Wenjun Bu, and is named after Professor Leyi Zheng. Its authors placed it to the "eastern species group" ...

'' and '' Perittopus laosensis''.

References

Veliidae Insects described in 2013 Insects of China {{gerromorpha-stub