Rhagoletis flavigenualis Hering, 1958

Korneyev, S. V., Smith, J. J., Hulbert, D. L., Frey, J. E. & Korneyev, V. A., 2022, A New Species Of Rhagoletis (Diptera, Tephritidae) From Switzerland, With Discussion Of Its Relationships Within The Genus, Zoodiversity 56 (1), pp. 1-20 : 10-12

Rhagoletis flavigenualis Hering, 1958 ( figs 5–6 )

Rhagoletis zernyi: Zaitzev, 1947: 6 (misidentification; records from Georgia; host plants).

Rhagoletis flavigenualis Hering, 1958 (description); Rohdendorf, 1961 (key, description); Kandybina, 1977 (larva; distribution; host plants); Korneyev & Merz, 1997 (key, distribution); Norrbom et al., 1999 (catalogue); Gilasian & Merz, 2008; Mohamadzade & Rasoulian, 2009: 84; Korneyev et al., 2018 a: 466; 2018 b: 32 (key, distribution).

T y p e m a t e r i a l. Holotype Ơ: Turkey: S. Anatolia , Antalya-Kas , Katrandag , 1100 m ( SMNS).

N o n -t y p e m a t e r i a l. Kazakhstan: Aksu-Djabagly , on Juniperus zeravshanica , 17.08.1964, 2 Ơ, 2 ♀; 15.09.1964 (Fisechko) ; Kyrgyzstan: Kyrghyz Alatau , 30 km S of Bishkek, 42°35.9΄ N 73°52.1΄ E, h = 1950– 2100 m, 5– 7.08.1998, 3 Ơ, 1 ♀ (Korneyev & Kameneva) ( SIZK) ; idem, 1 Ơ, 1 ♀, in alcohol ( MSU) ; Yssyk-Kol Region , Terskey Alatau, from Juniperus sabina , 5.08.1972 (Kandybina) ( SIZK) ; Tajikistan: Ghissar Range , 2.5 km E Iskanderkul, 39.08530º N, 68.40226º E, 2360 m asl, swept from Juniperus , 7– 8.07.2018, 3 Ơ (V. Korneyev) ( SIZK) ; Turkmenistan: [ Kopet-Dagh , between Firuza & state border], 23.09.1930, 1 ♀ (L. Bianchi) ( SIZK) .

Diagnosis. Rhagoletis flavigenualis can be differentiated from other species of the Rhagoletis juniperina group by having the medial occipital sclerite entirely yellow, entirely or predominantly yellow femora (at most hind femur brown basally), wing with basicostal cell clearly tinged with brown, wing bands partially yellowish-brown, with discal and subapical bands separated. R. flavigenualis is similar to R. bagheera , R. batava , R. juniperina , R. mongolica , and R. merzi in general appearance, differing from them also by having the occiput entirely yellow (or at most the occipital sutures tinged with brown) (vs. with the median occipital sclerite widely black at least on the ventral half in the other species); it also differs from the juniper-associated R. juniperina and R. merzi by having a conspicuously longer male posterior lobe of the lateral surstylus (1.3–1.5 times as long as surstylus basal of prensisetae ( fig. 6 , a) vs. 0.6–0.75 times as long as surstylus basal of prensisetae in R. merzi ( fig. 8 , b) and R. juniperina ( Bush, 1966: fig. 83)). Abdomen black with posterior margins of tergites yellow. It is also similar to Rhagoletis zernyi in having the occiput and femora yellow and the wing bands partially yellowish-brown, differing from it by the entirely separated discal and subapical bands (in R. zernyi , the discal, subapical, and apical bands are connected at the anterior margin of the wing). Wing length 3.8–4.0 mm.

Host plants. Juniperus isophyllos (as “ isocellos ”) C. Koch; J. foetidissima Willd. ( Zaitzev, 1947) ; J. excelsa M. Bieb. , J. seravschanica Kom. ( Kandybina, 1977) .

D i s t r i b u t i o n. Georgia ( Zaitzev, 1947: as “ R. zernyi ” — misidentification); Kazakhstan, Kyrgyzstan, Tajikistan, S Turkmenistan ( Kandybina, 1977), Turkey, Iran ( Gilasian & Merz, 2008; Mohamadzade Namin & Rasoulian, 2009).

Remarks. This species is widespread in the Asia Minor, Caucasus and Central Asia.

Figures

Fig. 5. Rhagoletis flavigenualis male (a) and female (b–e): a–b — habitus left, c — abdomen dorsal; d — occiput and mesonotum, posterodorsally.

Fig. 6. Rhagoletis flavigenualis male (a–с) and female (d–g): a, b — epandrium, hypandrium and surstyli (a — left, b — posterior), c — phallus glans; d — aculeus apex, e — aculeus, f — spermatheca; g — eversible membrane, ventral. Scale: d, f — 0.1 mm, e, g — 0.5 mm.

Fig. 8. Rhagoletis merzi sp. n. paratypes (SIZK): male (a–с) and female (d–g): a, b — epandrium, hypandrium and surstyli (a — left, b — posterior), c — phallus glans; d — aculeus apex, e — aculeus, f — spermatheca; g — eversible membrane, ventral. Scale: d, f — 0.1 mm, e, g — 0.5 mm.