Hydrosmittia tenuistylata Ferrington Jr & Saether 2011, sp. n.

Hydrosmittia tenuistylata sp. n. (Fig. 37) Type material: Holotype male, TANZANIA: Tanga, West Usambara Mountains, Mazumbai, xi 1990, ZMBN's Tanzania Expedition (ZMBN Type No. 437). Diagnostic characters: The reduced inferior volsella and the attenuate Gonostylus together with the apical teeth on the phallapodeme will separate the male imago from other members of the genus. Etymology: From Latin, tenuis, slender, stylus, style, and – atus, equipped with, referring to the attenuate gonostylus. Male imago (n = 1) All measurements and ratios within the range of variation of H. soelii with the following exceptions and additions: AR 1.12; hypopygium (Fig. 37 E) with anal point folded, but apparently not pointed; tergite IX with 8 setae; virga (Fig. 37 D) 27 µm long, 0.4 times as long as gonostylus; gonocoxite 114 µm long; phallapodeme with two apical teeth resembling those in H. togadistalis Sasa, but barely sclerotized; inferior volsella weak, slightly hooked, reaching to 0.68 gonocoxite length; accessory lobe reaching to 0.80 gonocoxite length. Distribution The species is only known from the type locality, near a mountain stream in Tanzania. Published as part of Ferrington Jr, Leonard C. & Saether, Ole A., 2011, A revision of the genera Pseudosmittia Edwards, 1932, Allocladius Kieffer, 1913, and Hydrosmittia gen. n. (Diptera: Chironomidae, Orthocladiinae) 2849, pp. 1-314 in Zootaxa 2849 (1) on page 111, DOI: 10.11646/zootaxa.2849.1.1, zenodo.org