Tephritis heringinella, Korneyev, 2017

Korneyev, S. V., 2017, A New Species Of The Genus Tephritis (Diptera, Tephritidae) With Shining Abdominal Tergites From Kyrgyzstan, Vestnik Zoologii (Vestn. Zool.) 51 (2), pp. 137-142 : 138-141

Tephritis heringinella sp. n. (figs 1–2)

urn:lsid:zoobank.org:act:286A3899-551B-4B58-8D33-BE334BEDB8C0

Type material: Holotype ♀: Kyrgyzstan: Chon-Aryk prope Bishkek, h = 1200 m; 5.06.1994 (V. Korneyev leg.) ( SIZK).

Paratypes: 4 Ơ, 2 ♀, same label as for the holotype; 1 ♀, idem, 29.06.1996 ; 7 Ơ, 6 ♀, Chon-Aryk prope Bishkek, 42°43.2ʹ N 74°34.4ʹ E, h = 1060–1100 m, 20.06.1998 ; 1 Ơ, Talas valley, 10.3 km from Kok-Sai , steppe, 42°26.5ʹ N 71°00.0ʹ E, h = 1700–1850 m, 24.06.1998 ( V. Korneyev & Kameneva leg.) ; 2 Ơ, Talas ridge, Chatkal flood plain, 76.0 km from Jangy-Bazar , 42°04.0ʹ N 71°35.8ʹ E, h = 2210 m, 28.06.1998 ( V. Korneyev & Kameneva leg.) ; 1 ♀, Chatkal River valley, 15.3 km from Jangy-Bazar , 41°41.1ʹ N 70°39.7ʹ E, h = 1400–1700 m, 1.07.1998 ( V. Korneyev & Kameneva leg.) ( SIZK) .

Diagnosis. Greyish flies, differing from most known species of the genus Tephritis that have entirely white microtrichose and setulose tergites by the shiny black, brown or black setulose abdominal tergites 4–5(6) and pointed aculeus (fig. 3, 3), characters shared only with T. corolla Richter, 1975 and T. sauterina Merz, 1994 . These species can be differentiated by wing pattern details: in T. heringinella the wing is widely dark with a few isolated round spots, including only one in cell R 2+3 anterior of r-m and dm-cu crossveins (two to three in T. corolla and T. sauterina , with one usually proximal to r-m crossvein), and only two to four hyaline spots in cell dm (four to seven in T. corolla and T. sauterina — fig. 3, 4). The new species is very similar to the species currently assigned to Heringina : H. guttala (Fallén, 1814) and H. arezoana Mohamadzade & S. Korneyev, 2015 in the wing pattern (brown with isolated round hyaline spots: one in R 2+3 anterior of r-m and dm-cu intersection, one in the dark distal field of cell br, one in basal half of cell r 4+5, and one posterior of r-m crossvein, and four narrow brown rays at wing apex separating large subtriangular hyaline spots — as on fig. 1, 4), readily differing from them by having three (rarely two) isolated round hyaline spots in cell r 1 (four to five spots in H. guttala and H. arezoana — as on fig. 3, 2, the absence of a thickening (“bulla”) in the distal third of the wing (present in H. guttala and H. arezoana ), and by the tip of aculeus being pointed (fig. 2, 2) (bluntly truncated in H. guttala and H. arezoana ).

D e s c r i p t i o n. Medium-sized flies ( BL = 3.8–4.1 mm (♀); 3.4–3.7 mm (Ơ)) with a few separated round hyaline spots in the wing disk and five large subtriangular incisions separated by four narrow brown rays at wing apex, shining abdominal tergites 4–5(6) and apically acute aculeus.

H e a d: shape as in most other Tephritis species (fig. 1, 3, 5), in profile, 1.1–1.3 times as high as long, gena below eye 0.13–0.20 times eye height. Frons matte yellow to ochreous, with white or light grey dorsal and lateral margins, 0.5–0.6 mm wide at vertex, and narrowing to 0.45 mm at antennal bases, and 0.4 mm long. Ocellar, medial vertical, anterior orbital and frontal setae dark brown to black; other setae including posterior orbital white to yellowish white; postocular row of setulae is black, except white one, genal setae is black, setulae on distal part of palp and on pedicel black. Antenna is yellow to dark ochreous, sometimes reddish; flagellomere 1 pointed; arista brown except reddish base.

Thorax: scutum, scutellum and pleural sclerites gray pollinose over black ground color (fig. 1, 1–3). Scutellum black medially, yellowish laterally and ventro-laterally. Thoracic setae usual for Tephritis , all dark brown or black (posterior anepisternal and anepimeral setae brown), except posterior notopleural seta white and lanceolate. Apical scutellar seta 1/3 as long as basal scutellar seta. Calypters white, with whitish fringe; upper calypter conspicuously lobate, almost as long as wide, lower calypter narrow. Halter yellow.

Legs: mostly entirely light to ochreous yellow, sometimes femora with light brown ventrolateral longitudinal streak (fig. 1, 3). Fore femur with two rows of posterodorsal setae, basal 3–5 white, others brown to black, and one row of longer postero-ventral setae, basal half (5–7 setae) white and apical half (6–7 setae) brown. Hind tibia with parallel rows of yellow to dark brown or black setulae and distinct anterodorsal row of dark brown to black setae on basal two-thirds, longest seta about as long as width of tibia; hind femur with black setulae dorsally.

Wing (fig. 1, 4): Cell bc hyaline. Cell c hyaline, with small brown spot at middle. Pterostigma entirely dark brown. Cell r 1 hyaline at base, posterior to pterostigma brown, with three, rarely two (2 males) rounded hyaline spots widely separated from each other (one at r-m, two others at dm-cu and apical portion of cell). Cell r 2+3 entirely dark from base to r 1, with small round hyaline spot between r-m and dm-cu; preapical brown area (posterior to cell r 1 apex) with some two large trapeziform hyaline spots at the apex separated by narrow dark rays coming from r 4+5 cell. Cell br hyaline in basal half and dark in apical half, with single small round hyaline spot. Area adjacent to r-m entirely dark, without hyaline dots. Cell r 4+5 with round hyaline spot near vein M at dm-cu level, and long apical spot bordered by 2 narrow apical rays extending to apices of veins R 4+5 and M, two anterior and posterior subapical hyaline spots in r 4+5 extending into cells r 2+3 and m cells respectively. Cell bcu hyaline; cell bm with brown pattern in apical part. Cell dm brown, with three to four small spots (one at base, one in the middle (level with r-m) and one or two at the apex). Cell m with two large hyaline spots, the most distal extending into cell r 4+5, and two small and round spots at base of the cell. Cell cu 2 brown with one proximal, one central (at the end of Sc level) and three marginal hyaline spots. Anal lobe with three little brown spots. Vein R 4+5 without setulae dorsally and rarely one-two setula ventrally in the basal part of vein.

Abdomen (fig. 1, 6, 7): black, tergites 1–4 entirely grey microtrichose, other tergites shiny. Setulae on syntergite 1–2 mostly white and on tergites 3–6 mostly black. Oviscape slightly lesser than abdominal tergites 5 and 6 combined, shiny black, black setulose.

Terminalia. Male. Epandrium (fig. 2, 5) similar to that of other Tephritis species. Glans of phallus as in Fig. 2 , 6. Ejaculatory apodeme (fig. 2, 7) as in other species of the genus.

Female. Eversible membrane with two pairs of taeniae 0.35–0.4 times as long as membrane itself; ventral side of membrane with dentate scales, moderately large in anteromedial portion (fig. 2, 3). Aculeus 4 times as long as wide, sharply pointed to apex, with small apical incision (figs. 2, 1, 2). Two papillose short spermathecae 3 times as long as wide (fig. 2, 4).

Measurements. WL = 3.0–3.25 (Ơ, n = 7), 3.25–3.75 (♀, n = 7); AL = 0.43–0.45 mm (n = 5); BL = 3.8–4.1 mm (♀, n = 7); 3.4–3.7 mm (Ơ, n = 7).

Host plants: Specimens swept from Helichrysum sp. , which possibly is its host plant.

D i s t r i b u t i o n. Kyrgyzstan.

Etymology. The species name heringinella is diminutive from the name Heringina , reflecting the similarity with the species assigned to the latter genus, along with the smaller size of the new species (“a little Heringina ”). Also, it is named in honour of Prof. Erich Martin Hering (1893–1967), who greatly contributed to the study of fruit flies, particularly of the genus Tephritis .

Figures

Fig. 2. Tephritis heringinella sp. n. (paratypes, 1–4 — ♀, 5–7 — Ơ): 1 — aculeus, ventral view; 2 — aculeus tip, ventral view; 3 — eversible membrane, ventral view; 4 — spermathecae; 5 — epandrium; 6 — glans of phallus; 7 — ejaculatory apodeme.