Kybos albitalicus, Guglielmino, Adalgisa, Poggi, Francesco & Bückle, Christoph, 2011

Guglielmino, Adalgisa, Poggi, Francesco & Bückle, Christoph, 2011, Contribution to the knowledge on Typhlocybinae (Hemiptera, Cicadellidae) in Italy with description of two new species, Zootaxa 2979, pp. 41-59 : 46-49

2) Kybos albitalicus sp. nov.

( Figs 5 , 6)

Type series: Holotype Male: Marche (Macerata): Camerino, near Serravalle di Chienti, road to Copogna, lane 1,7 Km after fork from SS 77; ~ 700m; 23/6/2005 (176); herbaceous vegetation in valley with Salix eleagnos , S. purpurea , S. alba , Acer campestre , Ostrya ; Guglielmino & Bückle leg..— Paratypes: same data as holotype; 1 male.— Campania (Benevento): Road from SS 158 to Telese, Fiume Volturno at fork to Alvignano/Ruviano (Benevento); ~ 70m; 27/8/2006 (322); Salix alba , Populus canescens beside the river; Guglielmino & Bückle leg.; 1 male.—Abruzzo (L’Aquila): Between L'Aquila and Monticchio, plane of Aterno river, about 4 Km west of Monticchio; ~ 550m; 17/6/2005 (148); Salix alba ; Guglielmino & Bückle leg.; 1 male, 3 females.—Abruzzo (L'Aquila): Plane of Aterno river ~ 4 km west of Monticchio; ~ 550m; 8/8/2006 (283); meadows with brushes and trees with Salix alba , Crataegus , Urtica ; Guglielmino & Bückle leg.; 5 males.—Lazio (Rieti): Monti della Laga, north of S. Angelo, road to Macchie Piane about 3,3 Km from the end of the road; ~ 1300m; 20/6/2005 (161); on Salix caprea ?; Guglielmino & Bückle leg.; 2 males.—Lazio (Rieti): Monti della Laga, north of S. Angelo, road to Macchie Piane about 6 Km from the end of the road; ~ 1100m; 20/6/2005 (162); on Salix alba ; Guglielmino & Bückle leg.; 1 male.—Lazio (Roma): Lago di Bracciano near fork to Lago di Martignano; ~ 500m; 2/7/2005 (192); vegetation ( Poaceae , Cyperaceae , Juncaceae , Lamiaceae ) on the lakeshore, Salix alba ; Guglielmino & Bückle leg.; 6 males, 3 females.—Lazio (Rieti): Monti Reatini, M. Terminillo, SP 10, 4 Km from Leonessa; ~ 1200m; 22/8/1999 (36); vegetation along a brook; Guglielmino & Bückle leg.; 2 males, 31 females.—Lazio (Rieti): Monti Reatini, Leonessa; 1000m; 23/ 8/1999 (39); Salix along the gravel of a brook; Guglielmino & Bückle leg.; 6 males, 3 females.—Lazio (Roma): Lago di Bracciano, shore northeast of road-fork to Martignano; 150m; 19/8/2000 (83); Phragmites , Poaceae , Salix ; Guglielmino & Bückle leg.; 6 males, 2 females.—Emilia-Romagna (Modena): Monte Cimone, Fanano, Fellicarolo, near bridge Fellicarolo; ~ 700m; 28/6/2005 (186); river gravel with Salix eleagnos , Alnus incana ; Guglielmino & Bückle leg.; 3 males, 5 females.—Emilia-Romagna (Reggio Emilia): road Ligonchio— Castelnovo ne’Monti, Rio di Sologno southeast of Braglie; ~ 500m; 11/8/2005 (198); riverbed, Salix eleagnos, Carpinus ; Guglielmino & Bückle leg.; 2 males.— Lazio (Roma): Lago di Bracciano near fork to Lago di Martignano; 164m; 3–5/8/2006 (280); vegetation on seashore with Poaceae , Cyperaceae , Salix alba , Populus canescens ; Guglielmino & Bückle leg.; 13 males.—Toscana (Firenze): Marradi; 400m; 26.08.1996; F. Poggi leg.; 11 males, 3 females.—Emilia-Romagna (Reggio Emilia): Fiume Secchia near bridge between Sologno and Castelnovo ne’Monti; ~ 450m; 05/06/2008 (419); riverbed, Clematis , Populus nigra, Artemisia , S. eleagnos etc.; Guglielmino & Bückle leg.; 7 males, 2 females.

FIGURE 6. Kybos albitalicus sp. nov., male Paratype, Marche, Serravalle di Chienti: 2nd abdominal tergum, ventral view (A); 3rd abdominal tergum, ventral view (B); 1st–3rd abdominal sterna, dorsal view (C).

(The locality numbers in parenthesis coincide with the number system used by Guglielmino and Bückle in their faunistic and zoogeographic papers).

Holotype and paratypes from Emilia-Romagna, Marche, Abruzzo, Lazio and Campania are deposited in Dipartimento di Protezione delle Piante, Università della Tuscia, Viterbo, Italy (collection Guglielmino) (CG), paratypes from Toscana are in collection Francesco Poggi (CP).

Description. In size, shape and coloration very similar to Kybos virgator Ribaut , K. volgensis (Vilbaste) and K. albilacustris Tishechkin and distinguishable from those species only by genital morphology and apodemes.

Body length: 4.0– 4.5mm (Holotype 4.1mm).

Male genital apparatus: Pygofer appendages and anal collar ( Fig. 5 E) as in K. virgator . Aedeagus shaft ( Fig. 5 A) as in K. virgator , lateral appendages somewhat variable, generally rather wide and stout ( Fig. 5 D), in lateral view normally ventrally protruding beyond the shaft, sometimes slightly ( Fig. 5 A), sometimes almost perpendicularly ( Fig. 5 B), in ventral view only slightly diverging in caudal direction ( Fig. 5 C).

Apodemes: 2nd abdominal tergum (Fig. 6A) with well developed apodemes, about as long as wide. 3rd abdominal tergum (Fig. 6B) with distinct apodemes, almost reaching hind margin of tergum. 2nd abdominal sternum (Fig. 6C) with very short apodemes, not reaching hind border of 3rd sternum.

Diagnosis. K. albitalicus sp. nov. strongly resembles K. virgator (Figs 7A,7B), from which it differs by the shape and orientation of the aedeagal appendages and above all by the extremely short apodemes of the 2nd abdominal sternum and the long apodemes of the 2nd abdominal tergum. Also the apodemes of the 3rd abdominal tergum are somewhat longer. In the latter character the new species is similar to K. volgensis (Vilbaste) (Figs 7C,7D), which differs from it, however, by longer apodemes of the 2nd abdominal sternum and narrow and strongly diverging aedeagal appendages. K. albilacustris displays apodemes similar to K. virgator , with the sternal apodemes somewhat shorter, and is therefore easily distinguishable from K. albitalicus . The characters of the tymbal organ in Kybos albitalicus display very little variability.

Distribution. Kybos albitalicus is present in Emilia-Romagna, Toscana, Marche, Abruzzo, Lazio, Campania.

Ecological data. Host plant: Kybos albitalicus lives on Salix alba L., sometimes together with K. virgator . Probably also S. eleagnos Scopoli is used as a host plant.

FIGURE 7. Kybos virgator Ribaut. 3rd abdominal tergum, ventral view (A); 1st–3rd abdominal sterna, dorsal view (B). After Ossiannilsson (1981).— Kybos volgensis (Vilbaste) . 3rd abdominal tergum, ventral view (C); 1st–3rd abdominal sterna, dorsal view (D). After Ossiannilsson (1981).

Specimens were found from the beginning of June to the end of August. Probably the species is at least bivoltine.

Remarks. Material recorded as K. cf. virgator in Guglielmino et al. (2005) and as K. gr. virgator by Guglielmino & Bückle (2008) is K. albitalicus .

We consider it doubtful that K. albitalicus and K. virgator evolved on the same host plant in the same area and the same period. Perhaps K. albitalicus evolved in Italy isolated from K. virgator on Salix alba and K. virgator immigrated or was introduced only recently. Or K. albitalicus evolved first on another host plant, which disappeared due to climate changes and K. albitalicus therefore was compelled to a shift to another plant, previously colonized by K. virgator .

Figures

FIGURE 5. Kybos albitalicus sp. nov., male Paratype, Marche, Serravalle di Chienti: Aedeagus lateral (A). Kybos albitalicus sp. nov., male Paratype, Emilia Romagna, Rio di Sologno: Apex of Aedeagus lateral (B). Kybos albitalicus sp. nov., male Paratype, Marche, Serravalle di Chienti: Aedeagus ventral (C). Kybos albitalicus sp. nov., male Paratype, Emilia Romagna, Rio di Sologno: Aedeagus apical (D). Kybos albitalicus sp. nov., male Paratype, Marche, Serravalle di Chienti: Anal collar (E).