A new orthoclad species of

A new orthoclad species of Rheocricotopus Thienemann & Harnisch (Diptera, Chironomidae) from the Darjeeling–Sikkim Himalayas in India. — The adults and pupa of a new species, Rheocricotopus rarispina are described from the Darjeeling–Sikkim Himalayas in India. The species is distinguished by the few spines on the thoracic horn, anal lobe without fringe and bristle–like L setae and presence of ovoid humeral pit, nine squamal setae, structure of anal point and triangular and subterminal crista dorsalis in the adult male. With this new species, the number of Indian species of the genus rises to six