Chironomidae from Ethiopia, Part 2. Orthocladiinae with two new species and a key to Thienemanniella Kieffer (Insecta, Diptera) By A. D. Harrison Harrison, A.D. (1992): Chironomidae from Ethiopia, Part 2. Orthocladiinae, with two new species and a key to Thienemanniella Kieffer (Insecta, Diptera). — Spixiana 15/2: 149-195. Males, femäles, pupae and larvae of Orthocladiinae found in the Ethiopian Highlands and Rift Valley lakes, are described. The known species are: Bryophaeno-cladms brincki (Freeman), Corynoneura dewulfi Goetghebuer, Cricotopus albitibia (Walker), Cricotopus bizonatus Freeman, Cricotopus dibalteatus Freeman, Crico-topus ßavozonatus Freeman, Cricotopus harrisoni Freeman, Cricotopus scottae Freeman, Limnophyes minimus (Meigen), Limnophyes natalensis Kieffer, Paratricho-cladius micans (Kieffer), Paratrichocladius pretorianus (Freeman), Pseudosmittia guineensis (Kieffer), Pseudosmittia rectilobus (Freeman), Smittia maculipennis Goetg-hebuer, Thienemanniella lineola Freeman, Thienemanniella safi Lehmann. In addition, two new species are described: Chaetocladius awasae, from males and females, and Cricotopus unizonatus from males, females, pupae and larvae. Dr. A. D. Harrison, 111 A Berg Rd., Fish Hoek, 7975 South Africa Introduction This paper is the second in the series on Chironomidae collected in Ethiopia; the first was on the Tanypodinae (Harrison 1991). Freeman & Cranston (1980) list Orthocladiinae of Sub-Saharan Africa; most of the males of these are described and illustrated by Freeman (1953, 1956). Lehmann (1979, 1981) gives more details of some of these, and also describes further species, and some females and pupae. Harrison (in press) includes Ethiopian material in a paper on the genus Nanocladius from Africa south of the Sahara. Males, females, pupae and larvae of known species, and a detailed description of two new species are given in the present paper. Specimens were collected by the author and colleagues from the Biology Department, Addis Ababa University (Harrison 1991). The ecological background is given in Harrison & Hynes (1988), Tilahun Kibret & Harrison (1989), and Tesfaye Berhe, Harrison & Hynes (1989). Short notes only are given for Cardiocladius spp., Parametriocnemus scotti (Freeman), Rheocrico-topus capensis (Freeman) and Tvetenia calvescens (Edwards), as this material was sent to Drs. O. A. Saether and G. A. Halvorsen who are revising these genera. 149
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