Geographic differentiation in male calling song of Isophyamodestior (Orthoptera, Tettigoniidae, Phaneropterinae).

We studied the songs and morphology of the stridulatory file of Isophyamodestior across its complete geographic range, in order to test our hypothesis that the male calling song of the species shows strong differentiation between the northern (Pannonian) and southern (Balkan) parts of its distribution range, reflecting its disjunct distribution. Our analyses confirm this hypothesis, separating analyzed specimens of I.modestior into two main groups - one present in the central part of the Balkan Peninsula (representing Isophyamodestior sensu stricto), with the second group occurring in the Pannonian Basin, Dinarides, Slovenia and NE Italy. The most reliable difference between the groups is the duration of the main syllable, the number of stridulatory teeth and number of pulses in the main syllable, where all values are higher in specimens from the Balkan Peninsula. Additional analyses showed that within the second group, there are differences in analyzed characters between specimens from the Pannonian Basin and specimens from the Dinaric area, the latter ones having intermediate song characteristics, closer to the group from the Balkan Peninsula. Our study shows that detailed bioacoustic analyses can help to unravel patterns of intraspecific differentiation and thus provide a useful tool for taxonomic studies.

Rediscovery of Southern Barbed-wire Bush-cricket, Onconotus servillei Fischer von Waldheim (Orthoptera: Tettigoniidae: Tettigoniinae: Onconotini) in Serbia, with notes on species' calling song at the westernmost border of its distribution area.

Described from Odessa and North Caucasus, the Southern Barbed-wire Bush-cricket, Onconotus servillei Fischer von Waldheim (1846) has a distribution restricted to steppe habitats in Eastern Europe, European Russia up to Western Siberia (Fig. 1A) (Storozhenko 1994; Cigliano et al. 2019).

The first record of genus Gryllomorpha Fieber in Romania (Orthoptera: Gryllidae: Gryllomorphinae).

Although the fauna of Dobrogea (south-eastern Romania and north-eastern Bulgaria) is relatively well studied, the discovery of a crevice cricket was quite unexpected. Described from Ukraine and known to occur in Bulgaria, Greece, Turkey, Kazakhstan and possibly Uzbekistan, Gryllomorpha miramae is now recorded for the first time in Romania.

High-speed duetting - latency times of the female acoustic response within the bush-cricket genera Leptophyes and Andreiniimon (Orthoptera, Phaneropteridae).

To find a mate, male and female bush-crickets of the family Phaneropteridae typically engage in duets. The male sings and the female responds. For mutual recognition, the amplitude pattern of the male song and the species-specific timing of the female response have been shown to be very important. In the seven studied species, belonging to the genera Leptophyes and Andreiniimon, these duets are extremely fast and nearly completely in the ultrasonic range. The females produce very short sounds by fast closing movements of the tegmina. They respond with species-specific delays of 20 to 150 ms after the beginning of the male song. The different latency times are probably not important for species recognition, since in sympatric species they are quite similar.

Corrigenda: Iorgu IȘ, Iorgu EI, Puskás G, Ivkovic S, Borisov S, Gavril VD, Chobanov DP (2016) Geographic distribution of Gryllotalpa stepposa (Insecta, Orthoptera, Gryllotalpidae) in South-eastern Europe, with first records for Romania, Hungary and Serbia. ZooKeys 605: 73-82, doi: 10.3897/zookeys.605.8804.

[This corrects the article DOI: 10.3897/zookeys.605.8804.].

New data on the bush-cricket Montana medvedevi (Orthoptera: Tettigoniidae), critically endangered in Europe (EU 28), and a comparison of its song with all known song patterns within the genus.

Montana medvedevi is reported for the first time from Serbia. New information about the distribution, morphology and song of this species is discussed. The song of M. medvedevi is different from that of all other members of the genus, all figured for comparison. Montana is quite diverse regarding the amplitude pattern of the calling song of its members (known in 15 species). Surprisingly, some Montana species seem to have two song patterns, one produced during the day and one at night.

The unexpected finding of Parapholidoptera castaneoviridis in south-eastern Romania (Insecta, Orthoptera, Tettigoniidae).

The Balkano-Anatolian genus Parapholidoptera comprises 21 species and the westernmost one, Parapholidoptera castaneoviridis, previously recognized to occur in western Turkey, north-eastern Greece and south-eastern Bulgaria is recorded for the first time from south-eastern Romania, almost 300 km away from the closest known locality. Illustrations and measurements of morphological characters are given and the male calling song from this new, northernmost population is described.

Geographic distribution of Gryllotalpa stepposa in south-eastern Europe, with first records for Romania, Hungary and Serbia (Insecta, Orthoptera, Gryllotalpidae).

Described from the steppe zones north of the Black Sea, Caucasus, and central Asia, Gryllotalpa stepposa Zhantiev was recently recorded from a few localities in Greece, R. Macedonia, and Bulgaria. In May 2015, several specimens were collected from Ivrinezu Mare in Romania, which suggested a continuous distribution area of the species, stretching from the central Balkans to central Asia. Thus, to reveal its actual range of occurrence, a survey of several Orthoptera collections became mandatory and, as expected, a large number of misidentified specimens of Gryllotalpa stepposa were discovered, providing new data on the species distribution in south-eastern Europe, including also the first records of this mole cricket in Serbia and Hungary. Here a full locality list is presented of this species west of Ukraine and Moldova and the current geographic distribution of the genus Gryllotalpa in the Balkans is revised. A key for distinguishing the mole crickets in south-eastern Europe and a distribution map for this region are presented.