Poecilimon isopterus Kaya & Chobanov, 2018

Kaya, Sarp, Chobanov, Dragan, Heller, Klaus-Gerhard, Yahyaoğlu, Özgül, Uluar, Onur & Çiplak, Battal, 2018, Review of Poecilimon species with inflated pronotum: description of four new taxa within an acoustically diverse group, Zootaxa 4462 (4), pp. 451-482 : 476-477

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Poecilimon isopterus Kaya & Chobanov


Poecilimon isopterus Kaya & Chobanov sp.n.

(I in Figures 2–13 View FIGURE 2 View FIGURE 3 View FIGURE 4 View FIGURE 5 View FIGURE 6 View FIGURE 7 View FIGURE 8 View FIGURE 9 View FIGURE 10 View FIGURE 11 View FIGURE 12 View FIGURE 13 , Figures 1D View FIGURE 1 , 14I View FIGURE 14 , 15C,D View FIGURE 15 , 21 View FIGURE 21 , 22 View FIGURE 22 , 23 View FIGURE 23 )

Material examined. Holotype male. 1 M (male No 2 recorded in label), TURKEY: Antalya, S of Ibradı , 36.98060o N, 31.59330o E, 821 m, 30.iv.2015, xerophyte vegetation, collected as nymph 1 st instar on tall herbaceous vegetation, leg. D. Chobanov (CC) (sound record) GoogleMaps . Paratypes: 2 MM, 3 FF, TURKEY: Antalya, Ibradı— Derebucak , 1330 m, 37.13384o N, 31.56040o E, 14.vi.2014, leg. S.Kaya & D. Chobanov (in alcohol), mesophyte meadows and oak scrub, collected as nymphs 4–5th instar on the oak leaves (CC); 1 M, 1 F (nymph last instar), same data as holotype GoogleMaps ; TURKEY: 2 MM, Antalya, Termessos, Güllük Dağı , 900–1000 m, 27.vi.1997, leg. B. Aslan ( AUZM) ; 2 MM, Antalya, Ibradı , 850 m, 28.vi.1996, leg. B. Çıplak ( AUZM) ; 2 MM, Antalya, Ibradı, around Altınbeşik Cave , 650 m, 05.v.2003, leg. İ. Çinbingel ( AUZM) .

Diagnosis. The new species P. isopterus is aberrant in the group by its short pronotum, the indistinct inflation of metazona and its almost truncate caudal margin (I in Figures 3 View FIGURE 3 , 4 View FIGURE 4 , 7 View FIGURE 7 , 8 View FIGURE 8 ). However, it is clearly a member of the group based on the resemblance with P. inflatus , especially in the structure and coloration (black in apical half) of male cerci ( Figure 9I View FIGURE 9 ) and by its song ( Figure 15C,D View FIGURE 15 ). In addition it is similar to P. bilgeri by the less inflated and caudally truncate metazona of pronotum, but differs by the male cerci regularly incurved as a bow and black in the second half, the longer ovipositor and black abdominal terga in the first 1/2–2/3. It differs from P. inflatus by the metazona indistinctly inflated and caudally not produced, male cerci apically flattened and with 3–5 denticles and female subgenital plate narrowed apically (almost triangular in the new species while roughly quadrangular in P. inflatus ). A striking distinction of the new species is the small male tegmina especially in relation to its body size, and the smaller size of male tegmina in comparison to female tegmina (male left tegmen— 2.1–2.7 mm, in female about 2.8 mm; 3.1–4 mm in other members of the group) ( Figure 23 View FIGURE 23 ). Male stridulatory file is also characteristic being shortest in the group (1–1.4 mm against over 1.4 to 2.5 mm in other members of the group) with finest distal teeth.

Description (holotype, male). Fastigium of vertex <1/3 of scapus ( Figure 3I View FIGURE 3 ). Pronotum short, median sulcus located before to the middle, cylindrical in prozona and weakly inflated in metazona, posterior margin of the disc is truncate or slightly concave, medial carina absent, disk bordered by large light lines; paranotal margin straight along prozona and oblique or indistinctly S-shaped along metazona (I in Figures 3 View FIGURE 3 , 4 View FIGURE 4 ). Tegmina hardly visible beyond the pronotum, stridulatory file with 60–76 small teeth (very fine at both ends of the file). The length of stridulatory file 1.0– 1.4 mm ( Figure 6I View FIGURE 6 ). Cerci cylindrical, straight in proximal half and weakly curved apically, with flattened apex and 3–4 small denticles on external margin ( Figure 9I View FIGURE 9 ); subgenital plate slightly longer than wide and oval in its distal half, distal margin with a small triangular notch ( Figure 11I View FIGURE 11 ). Epiproct roughly 1.5x wider than long, with a convex caudal margin ( Figure 10I View FIGURE 10 ).

Female. Similar to male. Pronotum very similar in shape to that of the male (I in Figures 7 View FIGURE 7 , 8 View FIGURE 8 ). Subgenital plate twice wider than long and with a distinct incision ( Figure 12I View FIGURE 12 ); ovipositor typical for the genus, roughly 5 times as long as its medial width ( Figure 13I View FIGURE 13 ).

Coloration. Occiput with two black spots; disc of pronotum brownish, bordered by light stripes and with blackish pattern along these light stripes; paranota greenish-brown, Abdominal terga black in the first 1/2–2/3 part and brown in remaining part. In female (from İbradı) paranota greenish, disc brown and bordered by light stripes and with irregular dark pattern internal and external to the light bands.

Etymology. The new species characterises by the similar shape of male and female pronotum and especially by the similarity of male and female tegmina, female ones being frequently larger ( Figure 23 View FIGURE 23 ).