A new Palaearctic species of the subgenus Lunatipula (Diptera, Tipulidae) from the West Caucasus with a survey of the caucasica species group Author Lantsov, Vladimir I. https://orcid.org/0000-0002-8275-496X Tembotov Institute of Ecology of Mountain Territories of Russian Academy of Sciences, I. Armand str., 37 a, Nalchik 360051, Russia lantsov@megalog.ru Author Pilipenko, Valentin E. Lomonosov Moscow State University, GSP- 1, Leninskie Gory, Moscow 119991, Russia text ZooKeys 2021 2021-07-13 1048 145 175 http://dx.doi.org/10.3897/zookeys.1048.67564 journal article http://dx.doi.org/10.3897/zookeys.1048.67564 1313-2970-1048-145 578795FD41BF4807B0016F7B5AC4D4B9 93FE96A4127A5D8FAA3A39BCB3E4B729 Tipula (Lunatipula) eleniya sp. nov. Figs 3 , 4 , 5 , 13B , 14B, G Material examined. Holotype : Russia • 1 male ; Krasnodarskiy Kray , Sochi env. Psekhako Mt. , 43°41'28"N , 40°22'E ; alt. ~ 2000 m ; 14-18 Jun. 2008 ; K. Tomkovich leg.; ZISP . Holotype in good condition; however, left antenna, front right and left hind legs missing. Paratypes : Russia • 1 male ; same data as for holotype • 2 males ; Krasnodarskiy Kray , Kamyshanova Polyana env. [Biological station of Krasnodar State University], 44°16'91"N, 40°04'46"E ; alt. 1200 m ; 26 Jul. 2018 ; V.. Pilipenko leg.; ZISP . Diagnosis. Male. General coloration grey with silver pruinescence. Tergite 9 with deep rounded notches either side of slightly grooved cone-shaped projection. Sternite 8 with a pair of small appendages, each bearing a long medially curved spine, broad base of appendages with fringe of long whitish hairs. Outer gonostylus small, triangular, slightly thickened distally, covered with long setae. Inner gonostylus with small rod-like outgrowth in middle of outer edge. General description. Adult (Fig. 3A ). Male body length 15.7 mm, wing length 16.2 mm, haltere 2.5 mm, nasus 0.13 mm, rostrum 0.8 mm, scape 0.6 mm, pedicel 0.15 mm, 1st flagellomere 0.5 mm. Length (mm) of leg segments, fore (1), mid (2), and hind (3); successively femur, tibia, 1st and 2nd tarsomeres: 1 (9.7; 10.4; 8.5; 3.8), 2 (9.8; 10.5; 9.0; 4.5) and 3 (10.0; 13.0; 9.0; 4.5). Length (mm) of 3rd, 4th, and 5th tarsomeres of all three pairs of legs, approximately the same: 1.0; 0.6; 0.5 mm, respectively. Figure 3. T. (Lunatipula) eleniya sp. nov., male habitus. Holotype A general lateral view B head and thorax, dorsal view. Scale bars: 10 mm ( A ), 1 mm ( B ). Description. Head (Figs 3 , 13B ) grey with silvery pubescence. Rostrum grey dorsally, ventrally yellow-brown with sparse light rusty setae in black sockets. Nasus distinct, appearing triangular in dorsal aspect, covered with long, sparse procumbent setae. Frons and gula bare. Vertex (Fig. 13B ) framed by rows of sparse setae alongside eye, glabrous in center with indistinct narrow longitudinal dark grey line. Genae, including lateral part of rostrum, with very sparse fine pale bristles. Tempora and postgenae with sparse black setae. Antennae , bent backwards, reaches base of abdomen. Scape grey with silvery pruinescence, pedicel dirty yellow brown. Flagellomeres dark brown with verticils on slightly thickened bases, longest verticils subequal to length of respective flagellomere. Thorax (Fig. 3A, B ) grey with silvery pruinescence, and short sparse whitish hairs. Pronotum dark brown with a weak dark stripe medially, and short sparse whitish bristles. Scutum (Fig. 3B ) with four brownish grey longitudinal stripes, lateral stripe shorter, medial stripes narrowly separated by dirty yellow area. Katepisternum, anepisternum, katepimeron, anepimeron and meron grey, bare, with silvery pruinescence; scutellum and mediotergite light grey with silvery pruinescence; scutal lobes with wide dark grey stripe, bordered by sparse whitish setae and with long yellow setae anterolaterally at wing base. Scutellum framed anteriorly with brown, with sparse yellow setae laterally, and with vague narrow dark grey medial line. Mediotergite light grey with sparse yellow setae and with silvery pruinescence. Laterotergite grey with silvery pruinescence and sparse erect short brown setae. Wings (Fig. 3A ) with typical venation for the subgenus, transparent with brownish tin, (viewed in transmitted light). Stigma dirty yellow. Oblique lunule proximal to stigma. Setae on costal and subcostal veins; group of short black macrotrichia distally on R and base of R1 . Distal section of Rs , R4 + 5 , r-m , base of pentagonal discal cell lighter and weakened. Stem of cell m1 approximately half length of cell. Apex of vein Cu 1 sharply curved at wing margin. Halteres . Stem grey with base covered with short white setae, knob dark grey. Legs . Coxae light grey with silvery pruinescence; laterally with long sparse whitish yellow setae; medially with very short yellowish setae. Trochanters yellow with long yellow setae. Femora brown, narrowly yellow at base, covered with adpressed short brown setae; tibiae brownish; tarsal segments dark brown with short, adpressed brown setae. Tibial spur formula 1-2-2. Tarsal claws with a small tubercle at the base (magnification 10 x 4.5); with short but clearly visible arolium between ones. Abdomen (Figs 3A , 4A ). Tergites and sternites grey with silvery pruinescence, and sparse fine short golden setae. Tergites with lateral dark grey intermittent stripe, no distinct dorsal stripe. Tergites laterally and distally edged with whitish-yellow, proximal segments with thinner distal edge, becoming wider on caudal segments. Figure 4. T. (Lunatipula) eleniya sp. nov. A terminal segments of male abdomen, lateral view (dry) B-L male terminalia (after KOH 10% treatment) B hypopygium (without sternite 8), caudal view C hypopygium, lateral view D sternite 8, ventral view E tergite 9, caudal view F tergite IX, 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. Terminalia (Figs 4 , 5 , 14B, G ). Hypopygium grey to dark grey, moderately thickened, with silvery pruinescence (Fig. 4A-C ). Tergite 9 with two deep rounded notches flanking a median cone-shaped projection, the apex of which has a small groove (Figs 4E, F ; 5G-L , 14B ). The dorsolateral edges of the tergite 9 convex, curved inward. Sternite 8 (Fig. 4D ) with a pair of small appendages bearing long medially curved spine, base of appendages with fringe of long whitish hairs not obscuring gap between. Appendages of sternite 9 (Fig. 4K, L ) abundantly pubescent. Outer gonostylus (Figs 4G , 5A-F , 14G ) small, triangular, slightly thickened distally, covered with long bristles. Inner gonostylus (Figs 4G, H ; 5A-F , 14G ) with small rod-shaped outgrowth in middle of outer edge (Figs 4G , 14G ), twice as long as wide at base, slightly narrower medially, tip obliquely truncate. Posterior part of inner gonostylus a wide triangular plate with short sparse brown bristles in inner surface, long whitish setae in outer one. Gonocoxite (Figs 4G , 5A-C ) with two wide dentate outgrowths, ventral one longer, pointed, dorsal one rounded; long yellowish setae laterally on gonocoxite. Gonocoxal fragment (Fig. 4I ) with short forked extension at base. Semen pump and aedeagus as in Figure 4J . Figure 5. T. (Lunatipula) eleniya sp. nov., variation in the structure of the male terminalia A, D, G, J variant I (holotype) B, E, H, K variant II (paratype) C, F, I, L variant III (paratype) A-C inner and outer gonostylus, lateral view D-F inner and outer gonostylus, latero-caudal view G-I tergite 9, caudal view J-L tergite 9, dorsal view. Scale bar: 1 mm. Female unknown. Variation. Three variants exist of the small rod-like outgrowth of the inner gonostylus: variant I (holotype - Sochi env., Psekhako Mt, alt. 2000 m) (Fig. 5A, D ), variant II (paratype) (Fig. 5B, E ) and variant III (paratype) (Fig. 5C, F ). (variants II and III from Kamyshanova polyna env., alt. 1200 m). There are also some differences in the shape of tergite 9 (Fig. 5G-L ). Given the paucity of material, and the minor differences observed, the authors consider this to be intraspecific variability. Comparisons to similar species. The new species is readily separable from all other species of the subgenus by the presence of an outgrowth medially, on the outer edge of the inner gonostylus (Figs 4G ; 5A-F ; 14G ). Elevation. Adults were collected at altitudes ranging from 1200-2000 m. Flight period. Adults are active from middle of June through the end of July. Habitat. Mixed moderately moist mesophytic plants, shady communities that include common hornbeam ( Carpinus betulus ), oriental beech ( Fagus orientalis ), Nordman fir ( Abies nordmanniana ), ash vulgaris ( Fraxinus excelsior ), field maple ( Acer campestre ), colchis holly ( Ilex colchica ), etc. Distribution. Endemic to the Caucasus: currently known from the West Caucasus. Etymology. Tipula (Lunatipula) eleniya sp. nov. is named after the mother of the first author, Elena Nikolaevna Lantsova.