Bioacoustics of Poecilimon

Measurements. Pronotum male 4.4–5.1, female 4.9–5.1; tegmina male 0.0–1.3, female 0.0–0.1; postfemur male 14.4–17.1, female 16.5–16.7; ovipositor 8.1–8.3 mm . Description. Male. Scapus 1.0–1.1 (mean = 1.09) x broader than fastigium verticis. Fastigium verticis shallowly furrowed dorsally; parallel-sided or slightly widened in front. Discus of pronotum weakly rounded; dorsal margin almost straight in lateral view; apex faintly concave to almost straight; ventral margin of paranota almost straight in front, rounded behind. Squamipterous; tegmina less extending than in P. elegans . Stridulatory file with 106–114 teeth, only slightly curved; gradual transition from lager basal into smaller apical teeth after about 30 basal teeth. Cerci curved mediad in or behind apical third, slightly flattened before apex, apex rounded and apical tooth inserted ( 5 males ) or continuously narrowed into apical tooth ( 1 male ). Subgenital plate curved and narrowing behind middle; apical half with ( 5 males ) or without ( 1 male ) indistinct median keel; narrow apical part with subparallel sides; apex ± truncate with rounded projections at both corners. Female. Scapus 1.05 x broader than fastigium verticis; shallowly furrowed dorsally. Discus of pronotum weakly rounded; apex faintly concave or straight; dorsal margin in lateral view circa straight; ventral margin of paranota very slightly concave or straight in front, rounded behind. Squamipterous, tegmina (almost) completely hidden. Cerci conical. Subgenital plate triangular, apex rounded. Ovipositor sabre shaped, apical quarter to apical third dentate; with a distinct nodule above basal fold. Coloration. Male. Green with black stipples. Pronotum with white lateral bands bordered medially in metazona by a red cuneate spot; paranota with ventral margin white. Tegmina yellowish, speculum of discus (between cu1b and cu2) infumate and with a black spot at hind margin. Abdominal tergites green with an uninterrupted black median and with broad white lateral bands bordered externally by a black line; the white lateral bands sometimes extend onto the black median band. Female. Green with black stipples. Pronotum with a narrow white median line and white lateral bands, bordered medially in metazona by a red cuneate spot; paranota with ventral margins white. Tegmina yellowish with a black dot at hind margin. Abdominal tergites as in males; Coloration indistinct or lacking on last tergites.

Measurements. Pronotum male 4.4–5.2, female 5.2–5.3; tegmen male 0.6–1.3, female 0.0; postfemur male 15.4–17.4, female 17.3–17.6; ovipositor 8.1–8.5 mm . Description. Male. Scapus 1.2–1.7 x broader than fastigium verticis. Fastigium verticis dorsally furrowed. Discus of pronotum rounded; apex slight concave; ventral margin of paranota almost straight in front, rounded behind. Micropterous. Stridulatory file with 95–98 teeth, only slightly curved. Cerci gradually narrowing from base to about apical third, curved mediad in or behind apical third, slightly flattened before apex and continuously narrowed into apical tooth. Subgenital plate curved and narrowing behind middle; narrow apical part with subparallel sides; apex truncate with rounded projections at both corners. Female. Scapus 1.0–1.2 x broader than fastigium verticis. Fastigium verticis furrowed dorsally. Discus of pronotum rounded; apex faintly concave or straight; dorsal margin in lateral view substraight; ventral margin of paranota very slightly concave or straight in front, rounded behind. Squamipterous, tegmina completely hidden. Cerci conical. Subgenital plate triangular, apex rounded. Ovipositor sabre shaped, apical quarter to third dentate; without or with only a faint nodule above basal fold. Coloration. Green with black stipples. Pronotum with white lateral bands bordered medially in metazona by a red cuneate spot [hardly distinct as specimens are not well preserved]. Tegmina yellowish with a black spot at hind margin, speculum of discus infumate (at least between cu1b and cu2). Abdominal tergites green with an uninterrupted median and 2 lateral black lines; between lateral and median black lines a white band bordering the lateral lines or completely white [Coloration faintly distinct as the specimens are not well preserved]; 2 3 from Obrovazzo with indication of black lateral lines only.

First faunistic record for Croatia : Ingrisch & Pavićević 2010 Distribution in Croatia : From Southern Velebit Mt. to Metković (Neretva River) and Korčula Isl. Distribution in Europe: Endemic to the Balkans—Croatia and probably parts of Bosnia and Herzegovina . Taxonomic note: According to Ingrisch & Pavićević (2010) , some former paralectotypes of P. elegans (specimens from Obrovac, Metković, Korčula Isl.) deposited in the Natural History Museum in Vienna belong to an undescribed species. It has the same number of stridulatory teeth as Poecilimon albolineatus Ingrisch & Pavićević, 2010 (95–98), but is morphologically closer to P. elegans . Probably all the populations from the Adriatic coast and southern slopes of the Dinaric Alps southeastern of Karlobag belong to this new species. There is also a possibility for the presence of P. albolineatus or another undescribed species (close to P. albolineatus ) in Dubrovnik region and on the western slopes of Orjen Mt. Namely, some specimens from Lovćen Pass near Kotor in Montenegro examined by Ingrisch & Pavićević (2010) had a higher number of stridulatory teeth (106–114) and their song differs both from typical P. albolineatus and P. cf. elegans population from Biokovo Mt. in Croatia (K.–G. Heller pers. comm.).

The genus Poecilimon is quite diverse in its acoustic communication. In many species the females respond acoustically to the male song, but in others they have lost this capability, obviously several times independently (see Chobanov & Heller 2010). Within both sections many different song patterns exist, which prove the necessity of acoustic studies in combination to morphology to delimit taxa and solve certain systematic issues (compare Kaya et al. 2018; Sevgili et al. 2018). Due to the vast diversity within the genus and the multitude of rare and endemic taxa, most of the proposed systems focus on certain groups of taxa or on certain geographic area (e.g., Heller 1984; Ünal 2010) and plenty of taxa are still insufficiently known, especially bioacoustically.