Tipula (Lunatipula) talyshensis Savchenko, 1964

Lantsov, Vladimir I. & Pilipenko, Valentin E., 2021, A new Palaearctic species of the subgenus Lunatipula (Diptera, Tipulidae) from the West Caucasus with a survey of the caucasica species group, ZooKeys 1048, pp. 145-175 : 145

Tipula (Lunatipula) talyshensis Savchenko, 1964

Figs 10 , 11 , 12G-I ; 13E , 14E, K

Tipula (Lunatipula) talyshensis Savchenko 1964: 391 (type locality: Azerbaijan, Lerik region); Oosterbroek, Theowald 1992: 121; Oosterbroek 2021.

Material examined.

Holotype: Azerbaijan • 1 male, “р-н Лерик, Азербайдж. ССР 26. VI. [1]954 Джафаров” [Lerik region, Azerbaijan. SSR. [ Azerbaijanskaya Soviet Socialist Republic ] [alt. ~ 1115 m, 38°46'31"N, 48°24'55"E]; 26 Jun. 1954; Jafarov; / " Tipula talyshensis det. Savchenko sp. n." [white label] / [Original red label without text] / “Holotypus” [red label]; ZISP. Holotype in good condition (Fig. 10A, B ), however, some legs missing: fore legs - left missing, right up to femur; mid legs - left present, right missing; hind legs - left and right up to femur. Paratypes. Azerbaijan • 2 males, 2 females; same data as for holotype [printed on white paper] / “Paratypus” [Paratype not initially marked; red label]; ZISP .

Diagnosis.

Male. Tergite 9 at apex with a denticle on either side of wide, shallow, flat median notch. Paired apical appendages of sternite 9 narrower distally, bearing tassel of long golden setae. Female. Hypogynial valve several times longer than width at base.

Redescription.

Adult male (Fig. 10A, B ). General body coloration grey. Body length 15-20 mm, wings 18-19.5 mm.

Head (Fig. 13E ). Vertex light grey with indistinct median grey line, glabrous in middle and around eye with rows of setae between. Rostrum dorsally dark grey, whitish at base, ventrally light brown with grey median stripe. Nasus with long, whitish procumbent setae. Tempora and genae light grey to whitish (color depending on angle of inclination) with faint silvery pruinescence.

Antennae. Scape dark grey with rusty bristles, pedicel yellowish with indistinct brown line in middle, flagellum brown.

Thorax (Fig. 10A, B ). Pronotum grey with whitish setae. Scutum (Fig. 10B ) with four brownish stripes on grey, short whitish setae between central and side stripes. Scutal lobe grey with faint silvery pruinescence, anterolaterally with group of whitish setae. Pleura and coxae grey with silvery pruinescence; katepisternum dorsally with sparse whitish setae, anepisternum and meron glabrous. Scutellum and mediotergite grey with whitish setae, scutellum with dark grey median line visible as specimen is rotated.

Wings (Fig. 10A ). Translucent, grey, with light brown pterostigma. Longitudinal veins C, Sc, and R and bases of A1 and A2 with macrotrichia.

Halteres . Stem yellowish with light setae, knob brown.

Legs. Coxae grey with silvery pruinescence and long, whitish setae. Femora light brown with procumbent dark brown setae. Claws of fifth tarsal segment without spine at base.

Abdomen (Figs 10A , 11A ). Dark grey with short whitish setae. Posterior margins of tergites without noticeable light edging, lateral margins with wide whitish to yellowish edging.

Terminalia (Figs 11 , 14E, K ). Hypopygium (Fig. 11A, B, C ) not thickened. Tergite 9 (Figs 11E, F ; 14E ) trapezoidal, apex with rather wide, shallow median notch bounded by a denticles. Gonocoxites (Figs 11G , 14K ) with large ventral tooth, dorsal tooth truncated at apex. Outer gonostylus without significant features (Fig. 11G ). Inner gonostylus as in Figures 11G, H ; 14K . Paired appendages of sternite 8 (Fig. 11D ) relatively small, with fringe of hairs along inner edge. Apical appendages of sternite 9 (Fig. 11K, L ) narrowed distally, bearing tassel of long golden setae. Gonocoxal fragment, semen pump and aedeagus as in Figure 11I, J , respectively.

Female. Adult female body length 18-25 mm, wings 18-18.5 mm. Similar to male. Cercal hypogynial valve (Fig. 12G, H ) several times longer than wide at base. Sternite 9 and furca as in Figure 12I .

Comparison with closely related species.

This species differs from other species of the Tipula caucasica group by the broad shallow notch at the apex of tergite 9, the tassel of golden setae at the tip of the apical appendage of sternite 9, and by the small size of the paired appendages of sternite 8. The unusually long hypogynial valve of the female distinguishes this species from that of T. caucasica and T. quadridentata , the other known females of the Tipula caucasica group.

Elevation.

Adults were collected at altitudes ~ 1115 m.

Flight period.

Adults were collected on 26 June.

Habitat.

No data.

Distribution.

Endemic to the Caucasus - currently only known from Talysh (Azerbaijan).

Figures

Figure 10. T. (Lunatipula) talyshensis, male habitus A general lateral view B head and thorax, dorsal view. Scale bars: 10 mm (A), 1 mm (B).

Figure 11. T. (Lunatipula) talyshensis A terminal segments of male abdomen, lateral view (dry) B-L male terminalia (after KOH 10 % treatment) B hypopygium, caudal view C hypopygium, lateral view D sternite 8, ventral view E tergite 9, caudal view F tergite 9, dorsal view G inner and outer gonostylus, lateral view H inner and outer gonostylus, caudal view I gonocoxal fragment, dorsal view J semen pump and aedeagus, lateral view K adminiculum and paired apical appendages of sternite 9, caudal view L adminiculum and paired apical appendages of sternite 9, lateral view. Scale bar: 1 mm.

Figure 12. Female terminalia of Tipula caucasica species group A-C T. (Lunatipula) caucasica D-F T. (Lunatipula) quadridentata G-I T. (Lunatipula) talyshensis A, D, G ovipositor, lateral view B, E, H ovipositor ventral view C, F, I sternite 9 and furca, lateral view. Abbreviations: c-cerci; f-furca; hv-hypogynial valve; s-sternite; t-tergite. Scale bar: 1 mm.

Figure 13. Heads of Tipula caucasica species group, dorsal view A T. (Lunatipula) caucasica B T. (Lunatipula) eleniya sp. nov. C T. (Lunatipula) paupera D T. (Lunatipula) quadridentata E T. (Lunatipula) Tipula talyshensis. Scale bar: 1 mm.

Figure 14. Comparisons of some components of male terminalia of the Tipula caucasica species group A, F T. (Lunatipula) caucasica B, G T. (Lunatipula) eleniya sp. nov. C, I T. (Lunatipula) paupera D, J T. (Lunatipula) quadridentata E, K T. (Lunatipula) talyshensis A-E tergite 9, dorsal view F-K inner and outer gonostylus, lateral view. Arrows point to central notch at apex of tergite 9 (C, D), to the wedge-shaped projection posteriorly on inner gonostylus (F), to the rod-like outgrowth behind anterior beak of inner gonostylus (G), to the anterior (dorsal) margin of gonocoxite (I, J, K). Scale bar: 1 mm.