Dolichopodidae (Diptera) of Inner West Anatolia (Turkey) with a new species record

This study was carried out between 2009 and 2011 in the Inner West Anatolia region (Afyonkarahisar, Kütahya and Uşak). It was determined that the collected species belonged to eight subfamilies, 21 genera and 54 species. Neurigona suturalis is a new record for Turkey and the other 53 species are new records for the Inner West Anatolia.


Introduction
Dolichopodidae is one of seven families within the superfamily Empidoidea and one of the biggest families in Diptera in terms of the number of species. It contains approximately 8000 species in the world. It is known that 200 species belonging to 35 genera are known from Turkey (Küçükberber et al., 2017;Kechev et al., 2020).
The body length of adult dolichopodids ranges from 0.8 to 9.0 mm. Adults is often identified by their metallic coloration, wings and males' genitalia. The adult dolichopodids occur in semi-aquatic and aquatic fields, like marshlands, woodlands, grasslands, etc. Adults are predaceous and feeding primarily on small, soft-bodied arthropods and annelids. Dolichopodids are important and ubiquitous natural enemies of pests in a variety of habitats (Grichanov, Brooks, 2017).
The Inner West Anatolia is located in the east of the Aegean Region and it contains three provinces, 37 districts and 1145 villages. The research area with 31.446 square kilometers constitutes 4% of the territory of Turkey. Prevoius studies on the dolichopodid fauna of the Inner West Anatolia have reported 22 species from the research area (Tonguç, Barlas, 2011;Tonguç et al., 2013;Tonguç et al, 2016a). This work reports data about new records of dolichopodid fauna in the Inner West Anatolia in Turkey.

Material and Methods
Field surveys were carried out between 2009 and 2011 in the Inner West Anatolia, and namely the Afyonkarahisar, Kütahya and Uşak provinces (Fig. 1). Adult specimens were collected from habitats such as freshwater seepages, damp ground, tree trunks, river rocks and grass leaves using an entomological hand net. The collected specimens were preserved in jars containing ethyl acetate. Later, they were put in vials containing 70% ethyl alcohol or in insect envelopes. The collected specimens were identified using a binocular microscope. The faunistic list of the species and their distribution in Turkey are given according to Tonguç et al. (2016a). The Palearctic distribution is presented following Yang et al. (2006) and Grichanov (2007)

Faunistic list
As a result of the identification of the collected specimens, 54 species, 21 genera and eight subfamilies were determined.

Discussion
As a result of this study, 54 dolichopodid species were recorded as new for the Inner West Anatolia and with previous records, (Tonguç, Barlas, 2011;Tonguç et al., 2013;Tonguç et al., 2016aTonguç et al., , 2016b) the total number of dolichopodids of the Inner West Anatolia increased to 77 species. Neurigona suturalis is a new record for the Turkish dolichopodid fauna. The full list of dolichopodid species divided by provinces is given in Table 1. Distributions of the number of species belong to ten identified subfamilies are given in Figure 2. Hercostomus anatoliensis was described in 2016 by Tonguç et al (2016b) and was known previously only from the Afyonkarahisar, Kütahya and Uşak Provinces of Turkey. Fourty-nine, 47 and 43 species were recorded from the Afyonkarahisar, Kütahya and Uşak Provinces, respectively. Here we enriched the fauna of the studied provinces by 38 new species records for Afyonkarahisar, 35 for Kütahya, 31 for Uşak. Twenty-nine species were distributed in all provinces. Thirty-nine out of 77 species identified from the Inner West Anatolia are known to have a West Palaearctic distribution, while the other 38 of them are distributed in the West and East Palearctic Regions.
In Table 1, new records for the studied region are marked with an asterisk (*) in faunistic remarks. The number of species belonging to the family Dolichopodidae identified in Turkey increases to 201 with this new record. It is estimated that the actual fauna of Dolichopodidae of Turkey is in the range of at least between 350 and 400 species. Turkey has very rich species diversity because of containing different biogeographic regions, ecosystems and habitats.