(Hymenoptera: Chalcidoidea): New Records, Phenology and Habitat Data

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(Hymenoptera: Chalcidoidea): New Records, Phenology and Habitat Data NORTH-WESTERN JOURNAL OF ZOOLOGY 16 (1): 36-49 ©NWJZ, Oradea, Romania, 2020 Article No.: e191202 http://biozoojournals.ro/nwjz/index.html Bulgarian Eupelmidae (Hymenoptera: Chalcidoidea): new records, phenology and habitat data Miroslav ANTOV* and Anelia STOJANOVA Plovdiv University ”Paisii Hilendarski”, Faculty of Biology, Department of Zoology, 24 Tsar Assen Str., 4000 Plovdiv, Bulgaria. *Corresponding author, M. Antov, E-mail: [email protected] Received: 24. April 2019 / Accepted: 9. July 2019 / Available online: 15. July 2019 / Printed: June 2020 Abstract. Thirty-nine species of Eupelmidae belonging to seven genera and three subfamilies are listed. Ten of them are new for the fauna of Bulgaria and three for the Balkan Peninsula. New hosts and plant associates are established. Phenology of 37 species is studied. The highest imaginal activity is recorded in late spring (May), summer (June, July, August) and early autumn (September), and the highest variety of species is established during the three summer months, especially in August. The longest imaginal activity among the genera is observed in Eupelmus (seven months) and Anastatus (six months). The studied species are divided into six phenological groups and among them the summer phenological group is the most numerous. As a result of this study, 20 species (51.2 % of the total number) are found in a habitat of type 6210 Semi-natural dry grasslands and scrubland facies on calcareous substrates (Festuco-Brometalia). About 77% (30 species) of the species are recorded only in the oak zone. Key words: Eupelmidae, Bulgaria, Balkan Peninsula, faunistic data, new hosts and plant associates. Introduction muellneri Ruschka, 1921) are possibly the result of misidenti- fications (Fusu 2017). Eupelmidae Walker, 1833 (Hymenoptera: Chalcidoidea) is a Little is known about the phenology and habitats of the worldwide distributed family (Fusu et al. 2015, Kissayi & eupelmid wasps due to the absence of extensive investiga- Benhalima 2017), with the highest variety of species in tropi- tions. Faunistic data that can be used for phenological analy- cal regions (Kalina 1984, Gibson 1995, Fusu 2009, Kissayi & sis were previously given by Bouček (1967), Angelov (1970), Benhalima 2017). In the world fauna, the family is represent- Pélov (1975), Kalina (1981a), Donev (1986), Antov & Stojano- ed with more than 1000 recognized species (Noyes 2018) va (2015), Gibson & Fusu (2016), Fusu (2017), and Stojanova classified in 43 extant genera and three subfamilies (Gibson & Antov (2018). 1989, 2017, 2018). The aim of this paper is to present new faunistic data Calosotinae Bouček, 1958 comprises eight genera (Gib- and information on the phenology and habitat of the eupel- son 1989) whose species preferentially parasitize xylopha- mid wasps in Bulgaria. gous beetles, although some Calosota Curtis species are also primary or hyperparasitoids of insects in grass stems (Gib- son 1989, 1997, 2010). Material and methods Neanastatinae Kalina, 1984 includes four extant genera The material for this study was collected during the period 1996-2016 (Gibson 1989, 2009, 2013), with at least three of them having in different regions of Bulgaria and includes 883 specimens from quite varied host ranges, including coleopterans, dipterans over 150 locations. The altitude of the locations ranged from 2 m and crickets (Gibson 2009, 2013). (Black Sea Coast: NW of Lozenets Vill.) to 2500 m (Rila Mts: below Eupelminae Walker, 1833 is composed of 31 genera (Gib- Kovach Peak). son 2017, 2018) and is the most diverse of the three subfami- Imagoes were collected mainly by sweeping in grasslands, and lies of Eupelmidae. The spectrum of hosts of Eupelminae is setting up Malaise and Moericke traps. Trophic relationships be- extremely varied, including eggs of spiders and preimaginal tween eupelmids and their hosts were established by collecting galls, seeds and other plant material. These were put in plastic boxes until stages (eggs, larvae, pupae) of many insects belonging to the imagoes emerged. Imagoes were fixed in ethyl alcohol and stud- various orders (Gibson 1995, 1997). ied latter in the laboratory. Eupelmidae is distributed throughout Europe, with the Identification of the species was based on the keys by Ni- highest number of species in Spain – 67, followed by France kolskaya (1952), Bouček (1967), Kalina (1981b, 1988), Gibson (1995, with 52, Italy – 49 and Hungary – 43 (Noyes 2018). 2010, 2011, 2017), Askew & Nieves-Aldrey (2000, 2004, 2006), Gibson Eupelmidae is poorly studied on the Balkan Peninsula. & Fusu (2016) and Fusu (2017). In the works of Argyriou & Marakis (1973), Bouček (1977), The list of species established in this study includes the follow- ing data: the valid taxon name; published data for Bulgaria; exam- Kalina (1988), Tsankov et al. (1999), Marković & Stojanović ined material with locations, altitudes, date, number and sex of the (2003), Askew et al. (2006, 2013), Gibson (2011), Fusu (2013, specimens; the name of the host (in case of rearing); the method of 2017), Al khatib et al. (2014), Boyadzhiev et al. (2015), Gibson collection if different from sweeping, and the name of the collector (if & Fusu (2016), Fusu et al. (2018), etc. are reported a total of: different from the authors). For the species which are not determined 40 species for Croatia, 26 for Greece, 17 for Serbia, 9 for Mon- by the authors, the name of the specialist who had identified them is tenegro, 5 for Macedonia, 5 for Bosnia and Herzegovina, 3 indicated. Comments on biology are given for the reared species. for Slovenia and 1 for Albania. New species records for Bulgaria are marked with an asterisk (*) in So far for the fauna of Bulgaria, 37 species are reported the faunistic list and new species for the Balkan Peninsula with dou- ble asterisk (**). The insects are preserved as card-mounted speci- (Donev 1986, Harizanova 1997, Antov & Stojanova 2015, mens in the authorsʼ collection (University of Plovdiv). Gibson & Fusu 2016, Fusu 2017), but two of them (Eupelmus Eupelmus (Eupelmus) weilli Fusu & Gibson, 2016 was photo- (Macroneura) maculatus (Fèrriere, 1954) and E. (Macroneura) graphed under an Olympus SZ51 stereo microscope supplied with a New data on Bulgarian Eupelmidae 37 Canon PowerShot SD990 IS digital camera and with an insect ma- Calosota metallica (Gahan, 1922) nipulator (Boyadzhiev et al. 2012). The photo was processed by Calosota metallica: Gibson (2010), Antov & Stojanova (2015). Zerene Stacker software and subsequently edited by manually com- Material examined. Black Sea Coast: Sinemorets Vill., bining, adjusting and cleaning in Adobe Photoshop. Silistar Protected Area, 28 m, 13.VI.2015, 1 ♀. Danubian For the analysis of eupelmids distribution in plant zones in Bul- garia, Velchev et al. (1982) is followed with modifications. In this Plain: Shumen Fortress, 443 m, 11.VIII.2015, 13 ♀, 1 ♂. Rhod- study the xerothermic oak forests, along with mesophilic and xero- ope Mts: 5 km S of Ivaylovgrad, 200 m, 04.VI.2015, 2 ♀; Ivay- mesophilic oak-hornbeam forests are combined in an oak zone and lovgrad, 3 km N of Mandritsa Vill., 68 m, 04.VI.2015, 1 ♀. Sa- the subalpine and alpine vegetation in an alpine zone. kar Mts: Topolovgrad, 314 m, 18.VIII.2015, 1 ♀; 382 m, The investigation of the seasonal dynamics is based on the rec- 19.VIII.2015, 2 ♀. Stara Planina Mts: Arbanasi Vill., 417 m, ords of species present during the different months. 01.VIII.2015, 1 ♀. Strandzha Mts: Izgrev Vill., 134 m, The identification of habitats was done following Tzonev & Gussev 22.VI.2002, 1 ♀ (Det. G. A. P. Gibson, 2013). Vlahina Planina (2013). Mts: above St. Yoan Rilski Monastery, 1150 m, 20.VI.2005, 1 ♀ (O. Todorov). Results *Calosota obscura Ruschka, 1921 Material examined. Rhodope Mts: Sini Vrah Hut, 1050 m, Faunistic list 18.II.2001, 4 ♀ emerged from stems of Verbascum sp. Subfamily CALOSOTINAE Bouček, 1958 Comments: We reared C. obscura from stems of Verbas- cum sp. (Scrophulariaceae) along with curculionid beetles Calosota Curtis, 1836 (new plant associate) and suppose that the species develop as parasitoid of beetle larvae. This is the first record from *Calosota acron (Walker, 1848) Bulgaria. The real hosts of this species remain undetermined Material examined. Strandzha Mts: Vitanovo Reserve, because it is frequently reared from the stems of herbaceous 540 m, 30.VIII.2000, 1 ♀, Malaise trap (S. Petrov). plants inhabited by larvae of Coleoptera and gall wasps Comments: This is the first record from Bulgaria. (Askew & Nieves-Aldrey 2006). *Calosota aestivalis Curtis, 1836 Eusandalum Ratzeburg, 1852 Material examined. Strandzha Mts: Ropotamo River, 35 m, 12.V.1971, 1 ♀ (P. Angelov), (Det. G. A. P. Gibson, 2013). Eusandalum walkeri (Curtis, 1836) Comments: This is the first record from Bulgaria. Eusandalum walkeri: Bouček (1967). Material examined. Danubian Plain: Tabachka Vill., the *Calosota dusmeti Bolivar y Pieltain, 1929 Valley of Cherni Lom River, 110 m, 27.VII-10.VIII.2004, 1 ♀, Material examined. Belasitsa Mts: Belasitsa Hut, 693 m, Malaise trap (T. Ivanova). Vitosha Mts: Sofia, Slatina loc., 430 27.VI-05.VII.2002, 1 ♀, Malaise trap (O. Todorov). Stara Pla- m, 04-11.VIII.2003, 1 ♀, Blue Moericke trap (T. Ljubomirov). nina Mts: Arbanasi Vill., 417 m, 01.VIII.2015, 1 ♀. Comments: This is the first record from Bulgaria. Subfamily EUPELMINAE Walker, 1833 Calosota grylli Erdös, 1955 Anastatus Motschulsky, 1859 Calosota grylli: Donev (1986), Gibson (2010). Material examined. Black Sea Coast: Sinemorets Vill., **Anastatus bernardi Ferrière, 1954 Silistar Protected Area, 28 m, 13.VI.2015, 5 ♀, 2 ♂. Danubian Material examined. Black Sea Coast: NW of Lozenets Plain: Koshov Vill., 135 m, 28.VII.2015, 3 ♀; Cherven Vill., 154 Vill., 2 m, 26.VIII.2004, 1 ♀ (T. Ljubomirov) (Det. G. A. P. m, 29.VII.2015, 1 ♀. Rhodope Mts: the Valley of the Arda Gibson, 2013). River, NE of Madzharovo, 160 m, 28.V-08.VI.2001, 1 ♀, Ma- Comments: This is the first record from Bulgaria and the laise trap (H. Etarska); Besaparski Hills, Byaga Vill., 350 m, Balkan Peninsula.
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