. British journal of entomology and natural history. Natural history; Entomology. BR. J. ENT. NAT. HIST., 8: 1995. Fig. 5. Rheotanytarsus rioensis. Larva: a. characteristically worn mentum, b. mandible, c. labrum, d. mentum and ventromental plates, e. antenna, f. maxillary palp. Scale = mm. was rectangular in cross-section, about m wide with a water depth of about m. The water velocity was between and m s1. Algae covered the sides and base of the conduit which had no loose substratum. Two other species of Chironomidae were also found at the same site: Paratrichocladius ruf
. British journal of entomology and natural history. Natural history; Entomology. BR. J. ENT. NAT. HIST., 8: 1995. Fig. 5. Rheotanytarsus rioensis. Larva: a. characteristically worn mentum, b. mandible, c. labrum, d. mentum and ventromental plates, e. antenna, f. maxillary palp. Scale = mm. was rectangular in cross-section, about m wide with a water depth of about m. The water velocity was between and m s1. Algae covered the sides and base of the conduit which had no loose substratum. Two other species of Chironomidae were also found at the same site: Paratrichocladius rufiventris (Meigen) and Cricotopus vierriensis Goetghebuer. Two further records of this species are known from collections made by Malmqvist et al. (1993) in riffles in the natural stony bottomed stream in Barranco del Rio at an altitude of 1450 m on 1991 and in the stream Ijuana at an altitude of 770 m on 1991. The specimens were identified from pupal material. Acknowledgements We are grateful to Mrs A. M. Matthews for the original drawing of the male genitalia, and to Dr F. Reiss for advice and the loan of the types of Rheotanytarsus photophilus and pentapoda. References Cranston, P. S., Dillon, M. E., Pinder, L. C. V. & Reiss, F. 1989. 10. The adult males of Chironominae (Diptera: Chironomidae) of the Holarctic Region—Keys and diagnoses. Ent. Scand. Suppl. 34: 353-502. Langton, P. H. 1991. A key to pupal exuviae of West Palaearctic Chironomidae. 386 pp. Privately published. Lehmann, J. 1979. Chironomidae (Diptera) aus Fliessgewassern Zentralafrikas (Systematik, Okologie, Verbreitung und Produktionsbiologie). I. Teil: Kivu-Gebiet, Ostzaire. Spixiana Suppl. 3: Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original British Entomological and Natural History Society. [London] : British Entomo
Size: 1763px × 1417px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, booksubjectentomology, booksubjectnaturalhistor
