Abstract
Specimens of five species of the culicid Annulipes Group (Aedes annulipes, Ae. cantans, Ae. excrucians, Ae. flavescens, Ae. riparius), collected in the framework of the German mosquito monitoring programme, were examined for aberrant tarsal claws. Twenty types of aberrations regarding position, size, multiplication and structural modification of the tarsal claw and its basal tooth that were detected are described and illustrated. Different basal tooth positions found on claws reveal a basic blueprint of possible positions on mosquito tarsal claws. Morphological peculiarities and asymmetric occurrence of the aberrant claw types, as well as possible causes, are discussed with respect to species and gender.
References
Anderson, J.F. & Horsfall, W.R. (1963) Thermal stress and anomalous development of mosquitoes (Diptera: Culicidae). I. Effect of constant temperature on dimorphism of adults of Aedes stimulans. Journal of Experimental Zoology, 154 (1), 67–107.
https://doi.org/10.1002/jez.1401540106Azar, D., Veltz, I. & Nel, A. (2008) Mandibulate chironomids: primitive or derived? (Diptera: Chironomidae). Systematic Entomology, 33 (4), 688–699.
https://doi.org/10.1111/j.1365-3113.2008.00438.x
Becker, N., Petrić, D., Zgomba, M., Boase, C., Madon, M., Dahl, C. & Kaiser, A. (2010) Mosquitoes and their control. 2nd Edition. Springer-Verlag, Berlin, Heidelberg, xxx + 577 pp.
https://doi.org/10.1007/978-3-540-92874-4
Brust, R.A. (1966) Gynandromorphs and intersexes in mosquitoes (Diptera: Culicidae). Canadian Journal of Zoology, 44 (5), 911–921.
https://doi.org/10.1139/z66-093
Dahl, C.I., Kaiser, A. & Becker, N. (1999) Culicidae. In: Schumann, H., Bährmann, R. & Stark, A. (Eds.), Checkliste der Dipteren Deutschlands. Studia Dipterologica, Supplement 2, pp. 51–52.
Ellis, R.A. (1973) Sibling species delimitation in the Aedes communis (De Geer) aggregate (Diptera, Culicidae). Ph.D. thesis, University of Manitoba, Winnipeg, Manitoba, 158 pp.
https://hdl.handle.net/1993/8798
Forattini, O.P., Sallum, M.A.M. & Flores, D.C. (1991) Gynandromorphs of some Culex (Melanoconion) species. Journal of the American Mosquito Control Association, 7 (1), 129–131.
Hallmann, C.A., Sorg, M., Jongejans, E., Siepel, H., Hofland, N., Schwan, H., Stenmans, W., Müller, A., Sumser, H., Hörren, T., Goulson, D. & de Kroon, H. (2017) More than 75 percent decline over 27 years in total flying insect biomass in protected areas. PLOS ONE, 12 (10), e0185809.
https://doi.org/10.1371/journal.pone.0185809
Harbach, R.E. & Knight, K.L. (1980) Taxonomists’ glossary of mosquito anatomy. Plexus Publishing, Inc., Marlton, New Jersey, xi + 415 pp.
Jupp, P.G. & Kemp, A. (1999) Variation in tarsal claw morphology and the identification of Aedes (Stegomyia) demeilloni/segermanae and Aedes (Stegomyia) simpsoni/bromeliae (Diptera: Culicidae) in South Africa. Journal of the American Mosquito Control Association, 15 (1), 86–88.
Kaiser, K., Lorenz, S., Germer, S., Juschus, O., Küster, M., Libra, J., Bens, O. & Hüttl, R.F. (2012) Late quaternary evolution of rivers, lakes and peatlands in northeast Germany reflecting past climatic and human impact—an overview. Quaternary Science Journal, 61 (2), 103–132.
https://doi.org/10.3285/eg.61.2.01
Medlock, J.M., Hansford, K.M., Schaffner, F., Versteirt, V., Hendrickx, G., Zeller, Z. & Van Bortel, W. (2012) A review of the invasive mosquitoes in Europe: ecology, public health risks, and control options. Vector-Borne and Zoonotic Diseases, 12 (6), 435–447.
https://doi.org/10.1089/vbz.2011.0814
Mohrig, W. (1969) Die Culiciden Deutschlands. Untersuchungen zur Taxonomie, Biologie und Ökologie der einheimischen Stechmücken. Parasitologische Schriftenreihe, 18, 1–260.
Natvig, L.R. (1948) Contributions to the knowledge of the Danish and Fennoscandian mosquitoes, Culicini. Norsk Entomologisk Tidsskrift, Supplement I, i–xxiii + 1–567, 12 pls., 1 map.
Peus, F. (1937) Aedes cyprius Ludlow (= A. freyi Edwards) und seine Larve (Dipt., Culicidae). Archiv für Hydrobiologie, 31, 242–252.
Reinert, J.F., Harbach, R.E. & Kitching, I.J. (2004) Phylogeny and classification of Aedini (Diptera: Culicidae), based on morphological characters of all life stages. Zoological Journal of the Linnean Society, 142 (3), 289–368.
https://doi.org/10.1111/j.1096-3642.2004.00144.x
Robert, V., Günay, F., Le Goff, G., Boussès, P., Sulesco, T., Khalin, A., Medlock, J.M., Kampen, H., Petrić, D. & Schaffner, F. (2019) Distribution chart for Euro-Mediterranean mosquitoes (western Palaearctic region). Journal of the European Mosquito Control Association, 37, 1–28.
Roth, L.M. (1948) Mosquito gynandromorphs. Mosquito News, 8 (4), 168–174.
Taylor, D.B. (1982) Speciation in the Aedes triseriatus species complex. Ph.D. thesis, University of Notre Dame, Notre Dame, Indiana, 204 pp.
Walther, D. & Kampen, H. (2017) The citizen science project ‘Mueckenatlas’ helps monitor the distribution and spread of invasive mosquito species (Diptera: Culicidae) in Germany. Journal of Medical Entomology, 54 (6), 1790–1794.
https://doi.org/10.1093/jme/tjx166
Werner, E. (2012) A developmental network theory of gynandromorphs, sexual dimorphism and species formation. arXiv, 1212, 5439v1. [q-bio.MN]
Wilkerson, R.C., Linton, Y.-M., Fonseca, D.M., Schultz, T.R., Price, D.C. & Strickman, D.A. (2015) Making mosquito taxonomy useful: A stable classification of tribe Aedini that balances utility with current knowledge of evolutionary relationships. Plos ONE, 10 (7), e0133602.
https://doi.org/10.1371/journal.pone.0133602
Wood, D.M., Dang, P.T. & Ellis, R.A. (1979) The insects and arachnids of Canada. Part 6. The mosquitoes of Canada. (Diptera: Culicidae). Canadian Government Publishing Centre, Supply and Services Canada, Hull, Quebec, 390 pp.