TETTIGETTA CARAYONIBOULARD (HEMIPTERA: CICADIDAE) FROM CRETE, FAUNISTIC DATA AND FIRST DESCRIPTION OF ITS SONG

Using recording equipment for sonic and ultrasonic range we recorded the calling song of Tettigetta carayoni Boulard 1982, which is endemic to the Greek island of Crete (Kriti). It is widely distributed and common species from the sea coast to the mountains up to 1500 m above sea level. Nevertheless, the song of this species has not been described until now. The calling song structure is characteristic and easily distinguishable from the songs of related cicadas. Typical for the calling song is very fast repetition rate with 7 to 11 echemes per second. It consists of two parts, together forming a complete song with usual duration of many minutes. The monotonous part is a regular repetition of echemes with medium length, while rhythmic part consists of series with 2 to 4 very short echemes followed by one longer echeme. The monotonous part and rhythmic part can exchange either on a regular basis either one part is very long and can be randomly interrupted with a few echemes from opposite part. Studied was also the microstructure of the song, which shows 4-click units and consequently the stepwise distribution of the echeme duration. The song contains frequencies from 6 to 20 kHz with a maximum between 10.8 and 14.7 kHz. This species specific calling song pattern is compared with songs of other European cicadas.Original Abstract: S pomocjo snemalne opreme za slusno in ultrazvocno obmocje smo posneli pozivni napev skrzada vrste Tettigetta carayoni Boulard 1982, ki je endemicen na grskem otoku Kreta. Vrsta je splosno razsirjena in pogosta od morske obale do nadmorske visine 1500 metrov. Kljub temu oglasanje te vrste se ni bilo opisano. Struktura napeva je vrstno znacilna in jo po pozivnem napevu zlahka locimo od napevov sorodnih pojocih skrzadov. Znacilna za pozivni napev je zelo velika ponavljalna frekvenca s 7 do 11 ehemi v sekundi. Napev, ki je sestavljen iz dveh delov, obicajno traja vec minut. Monotoni del je enakomerno ponavljanje srednje dolgih ehemov, medtem ko je ritmicni del sestavljen iz serij z 2 do 4 zelo kratkimi ehemi, ki jim sledi en daljsi ehem. Monotoni in ritmicni del se bodisi izmenjujeta enakomerno ali pa en del traja zelo dolgo in je le nakljucno prekinjen z nekaj ehemi iz drugega dela. Mikrostrukturo napeva sestavljajo enote iz 4 klikov in zato je casovna razporeditev dolzin ehemov stopnicasta. Frekvencni obseg napeva je med 6 in 20 kHz z maksimumom med 10, 8 and 14, 7 kHz. Vrstno znacilni pozivni napev sva primerjala tudi z drugimi evro