''Perittopus breddini'' is an Indonesian species of riffle bug and the designated type species of genus ''

Perittopus ''Perittopus'' is a genus of Veliidae, riffle bug, and the sole genus of subfamily Perittopinae. Its species occur from southern India east to Indonesia and north to China in mountain stream habitats. Visually, the red or orange to reddish colou ...

''.

Distribution and habitat

''Perittopus breddini'' is confined to

Bali Bali (English:; Balinese language, Balinese: ) is a Provinces of Indonesia, province of Indonesia and the westernmost of the Lesser Sunda Islands. East of Java and west of Lombok, the province includes the island of Bali and a few smaller o ...

and Central and East

Java Java is one of the Greater Sunda Islands in Indonesia. It is bordered by the Indian Ocean to the south and the Java Sea (a part of Pacific Ocean) to the north. With a population of 156.9 million people (including Madura) in mid 2024, proje ...

, where it is found on mountains at altitudes between 730 and 1550 m

above sea level Height above mean sea level is a measure of a location's vertical distance (height, elevation or altitude) in reference to a vertical datum based on a historic mean sea level. In geodesy, it is formalized as orthometric height. The zero level ...

. In 2001, ''Perittopus'' specimens formerly identified as belonging to respectively ''P. breddini'' or '' P. vicarians'' in

Malaysia Malaysia is a country in Southeast Asia. Featuring the Tanjung Piai, southernmost point of continental Eurasia, it is a federation, federal constitutional monarchy consisting of States and federal territories of Malaysia, 13 states and thre ...

Thailand Thailand, officially the Kingdom of Thailand and historically known as Siam (the official name until 1939), is a country in Southeast Asia on the Mainland Southeast Asia, Indochinese Peninsula. With a population of almost 66 million, it spa ...

and

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 ...

were described as a new species: '' P. asiaticus''.

Description

Females larger than males; winged ("macropterous") specimens larger than wingless (" apterous") specimens of the same sex. Size ranges from 3.2 mm to 4.0 mm. Wingless specimens resemble those of '' Perittopus crinalis'', but can be separated in females by the shape of the black mark on the pronotum (heart-shaped on ''P. breddini'' and indistinct on ''P. crinalis'') and in males by the genital characteristics.

References

Veliidae Insects described in 1901 Insects of Indonesia {{gerromorpha-stub