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The new genera and species of the new fossil tribe Protodikraneurini trib. nov. of leafhoppers (Cicadellidae: Typhlocybinae) are described. The new genera and species are: Protodikraneura gen. nov. with Protodikraneura cephalica sp. nov. and Protodikraneura nasti sp. nov., Stareono mirabilis gen. nov. and sp. nov. The keys to recently recognized tribes of Typhlocybinae is given. Taxonomie position of Protodikraneurini as well as extant tribes of Typhlocybinae is discussed. Some other fossils formerly believed to be representatives of Typhlocybinae and their placement is also discussed. "Typhlocyba" bremi Heer, 1855 is excluded from Typhlocybinae.
This study provides the first data on the occurrence of the mosaic leafh opper Orientus ishidae (Matsumura, 1902) (Hemiptera: Cicadellidae) in Poland. This species is native to Southeast Asia, adventive in Europe and feeds on cultivated plants. Orientus ishidae is a well-known carrier of Grapevine fl avescence doree phytoplasma which causes the grapevine yellows disease. Symptoms of phytoplasma diseases of grapevine include deformations, leaf chlorosis and withering of plants. Th e appearance of this species in Poland might be caused by observed climate variations and insuffi cient plant health controls in the international trade of plants.
The Ligurian leafhopper (Eupteryx decemnotata Rey 1891) has been recorded for the first time in Poland, in a commercial greenhouse in Warsaw. Individuals were collected from rosemary (Rosmarinus officinalis L.). Intense feeding of this species caused serious damage in the cultivation of rosemary. For this reason, the range extension of this species must be monitored.
Wheat dwarf virus (WDV) has been one of the most common viruses on cereal crops in Poland in the last years. This single stranded DNA virus is transmitted by the leafhopper spec, Psammotettix alienus (Dahlb.) in a persistent manner. It induces yellowing and streaking of leaves, dwarfing or even death of infected plants. The presence of barley- and wheat-specific forms of WDV (WDV-B and WDV-W) and their vector were previously reported in the country, however the literature data did not include any information on the infectivity of the vector in Poland. A duplex polymerase chain reaction (PCR) procedure was developed and optimized for simultaneous detection and differentiation of both forms in the vector. Two sets of primers amplify 734 bp and 483 bp specific fragments for WDV-W and WDV-B, respectively. The results were verified by a sequencing method. The studies were carried out on insect samples collected in autumn from four different locations in Greater Poland. The results confirmed the presence of WDV-W in the tested samples. They also suggested the concomitant of both forms of the virus in the vector. Additional studies to determine virus-vector relationships should be undertaken.
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