Abstract
The circumscription and morphological characterization of the deltocephaline tribe Acostemmini is revised based on dis-coveries of new and poorly known taxa from recent collections in Madagascar and from examination of the type speci-mens of Alocoelidia fulva Evans, Iturnoria insulana Evans, and Protonesis delegorguei Spinola. Alocoelidia Evans 1954,Caelidioides Signoret 1880, Iturnoria Evans 1954, and Protonesis Spinola 1850 were previously placed in Coelidiinaebut were later removed from the subfamily and until now have been unplaced to subfamily are placed here in Deltocepha-linae: Acostemmini, new placement. A new genus and species, Ikelibeloha cristata gen. n., sp. n., are described that havean unusually modified structure of the head and a large, crested pronotum. Molecular data (28S, Histone H3 genes) wereobtained for Ikelibeloha and Iturnoria, and analyzed with other members of Deltocephalinae. Results of the phylogeneticanalyses show strong support for the monophyletic clade ((Acostemma, Eryapus), (Ikelibeloha, Iturnoria)) and thus a re-lationship between previously described Acostemmini, Ikelibeloha, and Iturnoria has strong statistical support, and aclose relationship is inferred between these and the morphologically similar Alocoelidia, Caelidioides, and Protonesis.Two new species of Alocoelidia, A. maurae sp. n. and A. chasei sp. n. are described, and the genus is redescribed. Themale genitalia of Caelidioides tristis (Signoret), Iturnoria insulana, Alocoelidia fulva, and Acostemella rubra Evans areillustrated and described for the first time. The female genitalia of A. fulva, C. tristis and I. insulana are described and thefirst and second valvulae of C. tristis are illustrated. The habitus and face of Protonesis delegorguei are illustrated and thegenus is redescribed. The characters traditionally used to define Acostemmini are reviewed with notes on their known de-grees of variation, and characters that differentiate Acostemmini from the closely related tribe Stegelytrini are discussed.The type of Malagasiella minima Evans was also examined, and Malagasiella Evans, 1954 is considered a junior syn-onym of Doratulina Melichar, 1903 (Deltocephalinae: Stenometopiini), syn. n. giving the new combination Doratulina minima (Evans) comb. n.References
Emeljanov, A.F. (1966) On the tribe Stirellini tribe n. and its taxonomic position (Homoptera, Cicadellidae). Zoologicheskii Zhurnal, 45, 609–610.
Evans, J.W. (1954) Les Cicadellidae de Madagascar (Homopteres). Mémoires de l’Institut Scientifique de Madagascar (Série E), 4, 87–137.
Evans, J.W. (1972) Some leafhoppers from New Guinea, Australia, and Thailand belonging to the subfamily Jassinae and a new genus from New Guinea referred to a new subfamily, the Acostemminae (Homoptera: Cicadellidae). Pacific Insects, 14(4), 647–662.
Huelsenbeck, J.P. & F. Ronquist. (2001) MRBAYES: Bayesian inference of phylogeny. Bioinformatics, 17, 754–755.
Kramer, S. (1950) The morphology and phylogeny of Auchenorrhynchous Homoptera (Insecta). Illinois Biological Monographs, 20, 1–111.
Kwon, Y.J. & Lee, C.E. (1979) The genus Doratulina Melichar from Korea (Homoptera: Auchenorrhyncha). Korean Journal of Entomology, 9, 99–105.
Linnavuori, R. (1959) Revision of the Neotropical Deltocephalinae and some related subfamilies (Homoptera). Annales Zoologici Societatis Zoologicae Botanicae Fennicae 'Vanamo', 20, 1–370.
Linnavuori, R. (1970) On the taxonomic position of two of Spinola’s African cicadellid genera. Suomen Hyonteistieteellinen Aikakaukirja (Annales Entomologici Fennici), 36, 183–185.
Linnavuori, R. & Al-Ne'amy, K. T. (1983) Revision of the African Cicadellidae (subfamily Selenocephalinae) (Homoptera, Auchenorrhyncha). Acta Zoologica Fennica, 168, 1–105.
Linnavuori, R. & Quartau, J.A. (1975) Revision of the Ethiopian Cicadellidae (Hemiptera-Homoptera): Iassinae and Acroponinae. Etudes du Continent Africain, Fascicle 3, 1–169.
Metcalf, Z.P. (1964) General Catalogue of the Homoptera. Fascile VI. Cicadelloidea. Part 11, Coelidiidae. Department of Agriculture, Agricultural Research Service, Washington, D.C. 182 pp.
Mita, T. (2009) First description of the males of Gonatopus lucens (Olmi) and G. asiaticus (Olmi), with host records from Japan (Hymenoptera: Dryinidae: Gonatopodinae). Esaki, 49, 117–120.
Müller, K. (2005) SeqState - primer design and sequence statistics for phylogenetic DNA data sets. Applied Bioinformatics, 4, 65–69.
Nielson, M.W. (1975) A revision of the subfamily Coelidiinae (Homoptera: Cicadellidae). Tribes Tinobregmini, Sandersellini and Tharrini. Bulletin of the British Museum (Natural History), Entomology, Supplement, 24, 1–197.
Oman, P.W. (1949) The Nearctic leafhoppers. A generic classification and check list. Memoirs of the Entomological Society of Washington, 3, 1–253.
Signoret, V. (1880) Essai sur les Jassides Stål, Fieb. et plus particulièrement sur les Acocéphalides Puton. Annales de la Société entomologique de France, 10(5), 189–212.
Swofford, D.L. (1998) PAUP* 4.0b10. Phylogenetic Analysis Using Parsimony (*and Other Methods). Version 4. Sinauer Associates, Sunderland, MA.
Vilbaste, J. (1965) On the genus Aconura Leth. (Homoptera, Iassidae). Notulae Entomologicae, 45, 3–12.
Viraktamath, C.A. New species of Doratulina and Bumizana (Homoptera: Cicadellidae) from Karnataka. Oriental Insects, 10, 79–86.
Wei, C., Webb, M.D. & Zhang, Y. (2010) A review of the morphologically diverse leafhopper subfamily Stegelytrinae (Hemiptera: Cicadellidae) with description of new taxa. Systematic Entomology, 35, 19–58.
Zahniser, J.N. & Dietrich, C.H. (2010) Phylogeny of the leafhopper subfamily Deltocephalinae (Hemiptera: Cicadellidae) based on molecular and morphological data with a revised family-group classification. Systematic Entomology, 35, 489–511.
Zwickl, D.J. 2008. GARLI v0.96 available from: http://garli.nescent.org.