The Terellia virens group includes eight species of uniformly greenish flies with white setulose abdomens and hyaline wings, variable in the characters of the male and female terminalia. Three new species are described and illustrated: Terellia freidbergi sp. n. from Middle and Near East, from flower heads of Centaurea behen L., T. ivannikovi V. Korneyev et Evstigneev, sp. n. from European Russia, Kazakhstan and Uzbekistan, breeding in flower heads of Ce. chartolepis Greuter, and T. whitei V. Korneyev et Mohamadzade, sp. n. reared from flower heads of Cousinia spp. in Kazakhstan, Kyrgyzstan, Turkmenistan and Iran. Illustrated diagnoses or redescriptions of other species and a key to the species of Terellia with hyaline wings and white setulose abdominal tergites are given.
Tephritis ozaslani sp. nov. is described from Artvin Province of Turkey and placed in the T. pulchra species group. Th e key to the T. pulchra group is provided, which includes 9 species. Th e main characters that distinguish the new species from the closely resembling Palaearctic species, T. cometa israilis Freidberg, T. acanthiophilopsis Hering, T. erdemlii Kütük, T. divisa Rondani, T. recurrens Loew, T. merzi Freidberg & Kütük, and T. hurvitzi Freidberg, are discussed. In addition, Inula oculus christi L. (Asteraceae) is determined as a host plant of the new species.
Korneyev (1985) reviewed the genus and recognized several species groups based on similarity of structure of the male terminalia, predominantly regarding the glans of the phallus. Korneyev (1987) proposed the genus Cerajocera as a subgenus Cerajocera of the genus Terellia and described T. (C.) clarissima Korneyev, 1987 as a new species. According to Norrbom et al. (1999), subgenus Cerajocera includes 14 species. Korneyev (2003) described T. (C.) cyanoides Korneyev, 2003 and proposed a key for the subgenus Cerajocera for a species of Palearctic region. Kütük (2009) described T. (C.) yukseli Kütük, 2009 and finally Kütük et al. (2011) described T. (C.) askaleensis Kütük et al., 2011 as a new species from Turkey. Thus, the subgenus Cerajocera includes 17 known species as of today. According to Koçak and Kemal (2013), 8 species of the subgenus Cerajocera are scattered throughout Turkey.
Tephritidae are picture-winged flies of variable size belonging to the superfamily Tephritoidea within the suborder Brachycera (De Meyer, 2006). According to Freidberg (2006), fruit flies (Diptera: Tephritidae) include 3 to 6 subfamilies, about 40 tribes and subtribes, approximately 500 genera, and about 4500 species. It seems that we already have enough suprageneric taxa and that not many additional genera are still to be discovered. According to Carroll et al. (2002), 190 species of fruit flies have economic importance all over the planet. According to Koçak and Kemal (2013), 156 species of fruit flies are located in Turkey. Yaran and Kütük (2014) described a new species of Urophora Rob-Des from Turkey, and Yaran and Kütük (2015) also recorded 2 species of fruit flies for the first time from Turkey. Thus, 159 species of fruit flies have been recorded from Turkey to date. With the present study, the number of fruit flies species increases to 160. The research area is located at 37°25′-39°20′N, 33°10′-35°51′E. Adult specimens of fruit flies were collected from host plants randomly or systematically by using an insect net in various locations of Nevşehir and Niğde provinces during 2012-2013. Species were identified by using the keys given by
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