Eur. J. Entomol. 103 (3): 505-513, 2006 | DOI: 10.14411/eje.2006.066

Variability in the karyotypes, testes and ovaries of planthoppers of the families Issidae, Caliscelidae, and Acanaloniidae (Hemiptera: Fulgoroidea)

Anna MARYAŃSKA-NADACHOWSKA1, Valentina G. KUZNETSOVA2, Vladimir M. GNEZDILOV3, Sakis DROSOPOULOS4
1 Institute of Systematics and Evolution of Animals, Polish Academy of Sciences, Kraków, Poland; e-mail: maryanska@isez.pan.krakow.pl
2,3 Zoological Institute, Russian Academy of Sciences, St Petersburg, Russia; e-mail: karyo@zin.ru; hemipt@zin.ru
4 Department of Agricultural Biotechnology, Agricultural University of Athens, Greece; e-mail: drosop@aua.gr

The aim of this study was to obtain information on the karyotypes, testes and ovaries of three fulgoroid families, mainly in the Issidae but also in the Caliscelidae and Acanaloniidae. For the Issidae, the data is for 19 species belonging to 11 genera of the subtribes Issina (2 species, 1 genus), Hysteropterina (14 species, 9 genera) and Agalmatiina (3 species, 2 genera) of the tribe Issini. The male karyotypes are shown to be quite uniform across the tribe, with 2n = 26 + X in all species studied except Latilica maculipes (Melichar, 1906) with 2n = 24 + X. The modal karyotype, 2n = 26 + X, matches the most probable ancestral state in the Fulgoroidea. In the majority of cases the number of seminal follicles in males and ovarioles in females are stable within but fairly variable among the species, the modal value of the follicle number is 10 per testis. Contrary to what might be expected from other fulgoroid families, such as the Dictyopharidae and Delphacidae, the variability in these characters revealed neither regular trends nor evident correspondence with the taxonomy of Issidae. In the Caliscelidae, all species studied had testes consisting of 6 follicles each and karyotypes of 2n = 24 + X and 26 + XY, respectively, in 3 and 1 species. The only representative studied of the Acanaloniidae, Acanalonia bivittata (Say, 1825), had 2n = 24 + X and 13 follicles in its testis. The variability in all the characters investigated is discussed and compared to other fulgoroid families, primarily to the most extensively studied families, Delphacidae and Dictyopharidae.

Keywords: Hemiptera, Fulgoroidea, Issidae, Caliscelidae, Acanaloniidae, karyotypes, holokinetic chromosomes, testes, ovaries, evolution, systematics

Received: February 6, 2006; Revised: March 29, 2006; Accepted: March 29, 2006; Published: July 3, 2006  Show citation

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MARYAŃSKA-NADACHOWSKA, A., KUZNETSOVA, V.G., GNEZDILOV, V.M., & DROSOPOULOS, S. (2006). Variability in the karyotypes, testes and ovaries of planthoppers of the families Issidae, Caliscelidae, and Acanaloniidae (Hemiptera: Fulgoroidea). EJE103(3), 505-513. doi: 10.14411/eje.2006.066
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