Zoodiversity_06_2021.indb UDC 595.132: 597.5(262:65) NEW RECORDS OF THE SUBFAMILIES CYLLOCERIINAE AND MICROLEPTINAE (HYMENOPTERA, ICHNEUMONIDAE) FROM EASTERN EUROPE O. Varga1, A. Kostro-Ambroziak2 1Schmalhausen Institute of Zoology NAS of Ukraine vul. B. Khmelnytskogo, 15, Kyiv, 01030 Ukraine E-mail: Sancho.Varga@gmail.com 2Laboratory of Insect Evolutionary Biology and Ecology, Faculty of Biology, University of Bialystok ul. K. Ciołkowskiego 1J, 15-245 Białystok, Poland E-mail: ambro@uwb.edu.pl O. Varga (https://orcid.org/0000-0002-6285-7830) A. Kostro-Ambroziak (http://orcid.org/0000-0001-8172-2985) New Records of the Subfamilies Cylloceriinae and Microleptinae (Hymenoptera, Ichneumonidae) from Eastern Europe. Varga, O., Kostro-Ambroziak, A. — Th e Ichneumonidae species belonging to the subfamilies Cylloceriinae Wahl, 1990 and Microleptinae Townes, 1958 collected in diff erent parts of Poland and Ukrainian Carpathians are listed. Allomacrus longecaudatus (Strobl, 1903) and the ge- nus Rossemia Humala, 1997 with a species, R. longithorax Humala, 1997, are recorded for the fi rst time from Ukraine, representing the third records of species for a European country aft er the original descrip- tion. Th e genus Entypoma Förster, 1869 with two species, E. robustator Aubert, 1968 and E. suspiciosum (Förster, 1871) is the fi rst reliable modern record of the genus for Poland. Th e subfamily Microleptinae is reliably recorded for the fi rst time from Ukraine. A key to European species of the genus Allomacrus Förster, 1869 is also provided. K e y w o r d s : Darwin wasps, parasitoids, Carpathians, Poland, Ukraine, key. Introduction Th e subfamily Cylloceriinae Wahl, 1990 is a small group of the Darwin wasps, numbering 54 species worldwide, of which 23 are distributed in Europe (Yu et al., 2016). Albeit, their taxonomic position within the family Ichneumonidae still remain very unclear. Th e genera Allomacrus Förster, 1869, Cylloceria Schiødte, 1838 and Hyperacmus Holmgren, 1858 were classically considered by Townes (1971) as members of the subfamily Microleptinae. Th e members of this group were subsequently assigned to diff erent subfamilies (e. g., Quicke et al., 2009; Broad et al., 2018), with the genera Cylloceria and Allomacrus placed in their own subfamily, Cylloceriinae, which included also the later described genus Rossemia Humala, 1997 (Wahl, 1990; Wahl, Gauld, 1998). Th e genus Hyperacmus was then transferred to this subfamily, on the base of molecular and morphological analysis (Quicke et al., 2009). Humala (2007) questioned placing these genera into a separate subfamily, stating that nearly all autapomorphies typical for these genera are also found in members of the subfamily Orthocentrinae. He proposed to group Allomacrus, Cylloceria, Rossemia and Hyperacmus in a separate tribe, Cylloceriini, within Orthocentrinae. He also proposed to reduce the rank of Microleptinae to tribal level, transfer the genus Eusterinx Förster, 1869 to Helictini, and place there only genera Microleptes Gravenhorst, 1829 and Cushmaniana Humala, 2007. Th e latter is considered as a synonym of Hyperacmus by Broad (2004). Zoodiversity, 55(6): 485–492, 2021 DOI 10.15407/zoo2021.06.485 Entomology 486 O. Varga, A. Kostro-Ambroziak Humala (2007) proposed to transfer to the tribe Cylloceriini also Helictini genera Apoclima Förster, 1869 and Entypoma Förster, 1869, while later (Humala, 2019) he refused this conception. Recent molecular studies (Spasojevic et al., 2019) confi rmed the close association of the Cylloceriinae with the subfamilies Diacritinae and Orthocentrinae, showing that these taxa constitute an entity which is diffi cult to subdivide based on both molecular and morphological evidence. Th us, the relationships between all these Ichenumonidae groups are still serve as a basis for discussion and no consensus have been reached yet. In this paper we follow the size and сomposition of the studied groups proposed by Humala (2007) but with the subfamily rank. Th e Cylloceriinae genera are characterized by: the presence of glymmae on the fi rst metasomal tergite; short sternite distinctly separated from the tergite, usually only reaching the level of spiracles; absence of the basal transverse carina on the propodeum; localization and specifi c shape of tyloids on male fl agellomeres (starting from 3rd). Th e microleptines can be separated from the other orthocentrines by the strongly projecting head on the level of antennal sockets; fore wing with vein 3rs-m absent; propodeum with well defi nded carination; long metasomal sternite 1, reaching the level beyond spiracles; absent glymmae; and tyloids starting from the fi rst male fl agellomere. Our knowledge on the biology of the Cylloceriinae and Microleptinae as well as all orthocentrines is scarce. Th e members of the genus Cylloceria are known as endoparasitoids of crane fl ies (Diptera, Tipulidae) (Humala, 2002), while Entypoma species were reared from Mycetophila spp. (Diptera, Mycetophilidae) (Hum- ala, 2003). Th e members of the subfamily Microleptinae (Microleptes) as well as the genus Hyperacmus are believed to be parasitoids of Stratiomyidae (Humala, 2003). Th e biology of the genera Apoclima, Allomacrus and Rossemia is still unknown (Yu et al., 2016). Material and methods Th e material used in this study was collected by diff erent authors in various locations of Western Ukraine (Carpathians) and Poland (South and Northeastern parts). Th e specimens are deposited in the collection of the I. I. Schmalhausen Institute of Zoology, Kyiv, Ukraine (SIZK) and the Department of Biology, University of Bialystok, Poland (UwB). Th e specimens were collected by sweep netting, Malaise trapping (MT) or using yellow pan traps (YPT). Images of the specimens were taken with a Leica Z16 APO microscope equipped with Leica DFC 450 camera and processed by LAS Core soft ware at SIZK. Scale bar for body parts = 0.2 mm and for habitus = 0.5 mm. General distribution follow Yu et al. (2016). Results Subfamily Cylloceriinae Wahl, 1990 Allomacrus arcticus (Holmgren, 1880) (fi gs 1–2) M a t e r i a l . Ukraine: Transcarpathian Region: Svydovets, 2–3 km NW of Kvasy, 48.1447 N, 24.2708 E, 750 m, beech forest, MT, 07.05–05.06.2014, 1 }; same locality, 22.05–08.06.2015, 1 }; same locality, 13–29.06.2015, 2 }; 6.5 km N of Mala Ugolka, 48.2595 N, 23.6197 E, 600 m, primeval beech forest, MT, 20.04–12.05.2015, 1 {; same locality, 12–31.05.2015 1 }; Vynogradiv, oak forest, 280 m, 48.1383 N, 23.0737 E, MT No. 3, 07.06– 03.07.2018, 1 }; Vynogradiv, beech forest, 48.138338 N, 23.073689 E, MT No. 2, 320 m, 26.07–18.08.2018, 1 } (Varga) (SIZK). D i a g n o s i s . Th e species is characterized by the smooth face; relatively wide, more- or-less fl at yellow clypeus; complete occipital carina; smooth mesoscutum; fore wing with vein 3rs-m absent; propodeum with strong lateromedian longitudinal carinae reaching well defi ned area apicalis; orange hind tibiae; granulate metasomal tergites 1–2; weakly upcurved female ovipositor, about 1.8–2.0 times as long as the hind tibia length; male antenna lacking tyloids. D i s t r i b u t i o n . Palaearctic; Ukraine (Humala, 2002), Poland (Hedwig, 1962). Allomacrus longecaudatus (Strobl, 1903) (fi gs 3–4) M a t e r i a l . Ukraine: Transcarpathian Region: Chornogora, Sheshul 6–7 km NE of Kvasy, 48.1572 N, 24.3637 E, 1450 m, subalpine zone, sweeping, 16–18.06.2012, 1 } (Varga) (SIZK). D i a g n o s i s . Th e species from Ukraine is characterized by the largely granulate body, including face, mesoscutum and metasomal tergites 1–2; relatively wide, more-or- less fl at yellow clypeus; complete occipital carina; propodeum with strong lateromedian 487New Records of the Subfamilies Cylloceriinae and Microleptinae (Hymenoptera, Ichneumonidae)… longitudinal carinae reaching well defi ned area apicalis; fore wing with vein 3rs-m present; fuscous hind coxae, trochanters and femora; weakly upcurved female ovipositor, about 0.9 times as long as the hind tibia length. Remarks. Schwarz (2003) also metioned several collected Allomacrus longecaudatus specimens marked as variation of the nominal taxon. Th e status of these specimens is still unclear. Th e specimens have generally darker hind femora and black tegulae in combination with stronger sculptured propodeum and fore wing with vein 3rs-m indistinct. D i s t r i b u t i o n . Europe; previously recorded from Austrian Alps (Schwarz, 2003), Germany (Riedel et al., 2021), fi rst record for Ukraine. Key to European Allomacrus species (females only) 1 Face and mesoscutum granulate (fi g. 3). Fore wing with vein 3rs-m usually present. Hind coxa and femur fuscous (fi g. 4). ............................................................................................................. A. longecaudatus – Face and mesoscutum smooth (fi g. 2). Fore wing with vein 3rs-m absent. ............................................... 2 2 Ovipositor at most weakly longer than the hind tibia length. Hind femur fuscous. ...................A. subtilis – Ovipositor at least 1.8 times as long as the hind tibia length. Hind femur orange (fi g. 1). .......A. arcticus Figs 1–4. Allomacrus spp.: 1–2 — A. arcticus; 3–4 — A. longecaudatus; 1, 4 — habitus (lateral view); 2–3 — face (frontal view). 488 O. Varga, A. Kostro-Ambroziak Cylloceria caligata (Gravenhorst, 1829) M a t e r i a l . Ukraine: Ivano-Frankivsk Region: Gorgany, 10–12 km SW of Stara Guta, 48.5589 N, 24.1967 E, 950 m, coniferous forest, sweeping, 13.07.2012, 2 } (Varga) (SIZK). D i a g n o s i s . Th e species is characterized by the complete occipital carina; strongly swollen basally clypeus; fore wing with vein 3rs-m absent; propodeum with strong lateromedian longitudinal carinae reaching well defi ned area apicalis; orange hind coxae; rugose metasomal tergites 1 and fi nely granulate tergite 2; weakly upcurved female ovipositor, about 1.8 times as long as the hind tibia length; and male tyloids on emarginated fl agellomeres 3–4. D i s t r i b u t i o n . Palaearctic; Ukraine (Humala, 2002), Poland (Sawoniewicz, 1982). Cylloceria melancholica (Gravenhorst, 1820) M a t e r i a l . Poland: Lesser Poland Voivodeship: Mochnaczka Niżna, forestation with Larix, 49.4333 N, 21.0333 E, sweeping, 30.05.2012, 2 {, 1 }; Kopciowa near Krynica Gorska, sweeping, forestation with Larix, 49.4333 N, 21.0333 E, 6.08.2011, 1 } (A. Kostro-Ambroziak) (UwB). Ukraine: Ivano-Frankivsk Region: Mochary, 5 km NE of Bogorodchany, 48.8371 N, 24.5814 E, 315 m, mixed forest, MT No. 1, 08–14.06.2015, 1 {; same locality, 09.06–05.07.2018, 2 {, 2 } (Varga); Chornogora, m. Goverla, 05.07.1969, 1 { (Ermolenko); Rybne, 48.9399 N, 24.5829 E, MT No. 1, 16.06–06.07.2019, 1 {; same locality, MT No. 2, 16.06–06.07.2019, 18 {, 2 } (Shparyk); Transcarpathian Region: Svydovets, 2–3 km NW of Kvasy, 48.1447 N, 24.2708 E, 750 m, beech forest, MT, 05–29.06.2014, 2 }; Chornogora, Sheshul 6–7 km NE of Kvasy, 48.1572 N, 24.3637 E, 1450 m, subalpine zone, MT, 10.08–01.09.2014, 1 {; Vynogradiv, beech forest, 48.1383 N, 23.0737 E, MT No. 2, 320 m, 20.05–07.06.2018, 2 { (Varga) (SIZK). D i a g n o s i s . Cylloceria melancholica is similar to C. caligata, but it diff ers by the black coxae, trochanters and trochantelli. D i s t r i b u t i o n . Palaearctic; Ukraine (Humala, 2002), Poland (Sawoniewicz, 1982). Entypoma robustator Aubert, 1968 (fi gs 5–6) M a t e r i a l . Poland: Podlasie Voivodeship: Biebrza National Park, Grobla Honczarowska, birch with alder, YPT, 24.09.2006, 1 {; 22.10.2006, 1 {, 2 }; 20.10.2007, 1 }; mineral island Pogorzały, oak-linden-hornbeam forest, YPT, 22.10.2006, 1 {; mineral island Pogorzały, oak-linden-hornbeam forest, MT, 22.10.2006, 2 }; YPT, 22.10.2006, 1 {; ‘Zdroj’, 2 km NE of Kostry-Litwa, YPT on picket (about 1 m) near small river, 15.10.2006, 1 {, 1 } (A. Kostro-Ambroziak) (SIZK, UwB). Ukraine: Ivano-Frankivsk Region: Dibrova, 5 km SW of Bogorodchany, 48.7721 N, 24.5117 E, 310 m, oak forest, sweeping, 11.10.2013, 2 { (Varga) (SIZK). D i a g n o s i s . Th e species is characterized by the complete occipital carina; strongly swollen basally dark brown clypeus; fore wing with vein 3rs-m present; propodeum with strong lateromedian longitudinal carinae reaching well defi ned area apicalis; orange hind femora; granulate metasomal tergites 1–2; strongly upcurved female ovipositor, about as long as the hind tibia length; and widened tyloids on male fl agellomeres 3–6. D i s t r i b u t i o n . Western Palaearctic; Ukraine: Kharkiv Region (Humala, 2003), fi rst record for Poland. Entypoma suspiciosum (Förster, 1871) (fi gs 7–8) M a t e r i a l . Poland: Podlasie Voivodeship: Biebrza National Park, Grobla Honczarowska, birch with alder, YPT, 24.09.2006, 1 }; 22.10.2006, 1 {, 2 }; mineral island Pogorzały, oak-linden-hornbeam forest, MT, 22.10.2006, 3 }; YPT, 20.10.2007, 1 {, 2 }; Carska Droga, bridge, alder, YPT, 22.10.2006, 7 {, 1 }; “Bęben” 1 km S of Kostry-Litwa, birch, YPT, 19.09.2006, 2 { (A. Kostro-Ambroziak) (SIZK, UwB). D i a g n o s i s . Th e species is characterized by the complete occipital carina; weakly and uniformly swollen orange-brown clypeus; propodeum with strong lateromedian longitudinal carinae reaching well defi ned area apicalis; fore wing with vein 3rs-m absent; largely fuscous hind femora; granulate metasomal tergites 1–2; strongly upcurved 489New Records of the Subfamilies Cylloceriinae and Microleptinae (Hymenoptera, Ichneumonidae)… female ovipositor, about as long as the hind tibia length; and oblique tyloids on male fl agellomeres 3–5. D i s t r i b u t i o n . Palaearctic; Ukraine (Humala, 2007), fi rst record for Poland. Hyperacmus crassicornis (Gravenhorst, 1829) M a t e r i a l . Poland: Podlasie Voivodeship: Biebrza National Park, mineral island Pogorzały, oak-linden- hornbeam forest, MT, 6–20.07.2008, 1 } (A. Kostro-Ambroziak) (SIZK). D i a g n o s i s . Th e species is characterized by the strongly projecting below antennal sockets head; dorsally absent occipital carina; not strongly twisted mandible, with both teeth visible; propodeum with distinct lateral and lateromedian longitudinal carinae reaching well defi ned area apicalis; fore wing with vein 3rs-m absent; short metasomal sternite 1, not reaching the level of spiracles; rugose metasomal tergites 1 contrasting with smooth and glabrous rest of metasoma; short female ovipositor, about 0.4 times as long as the hind tibia length; and tyloids on male fl agellomeres 4–5. D i s t r i b u t i o n . Holarctic and Oriental regions; Ukraine: Carpathians and Kharkiv Region (Humala, 2003), Poland (Sawoniewicz, 2001). Figs 5–10. Cylloceriinae spp. 5–6 —  Entypoma robustator; 7–8 — Entypoma suspiciosum; 9–10 —  Rossemia longithorax; 5, 7, 9 — habitus (lateral view); 6, 8, 10 — face (frontal view). 490 O. Varga, A. Kostro-Ambroziak Rossemia longithorax Humala, 1997 (fi gs 9–10) M a t e r i a l . Ukraine: Transcarpathian Region: Svydovets, 2–3 km NW of Kvasy, 48.1447 N, 24.2708 E, 750 m, beech forest, MT, 15.07–10.08.2014, 1 }; same locality, 8.07–6.08.2015, 2 } (Varga) (SIZK). D i a g n o s i s . Th e species is characterized by the dorsally absent occipital carina; strongly and uniformly swollen clypeus; strongly twisted mandible, with hardly visible lower tooth; propodeum with weak lateromedian longitudinal carinae reaching well defi ned area apicalis; fore wing with vein 3rs-m absent; granulate metasomal tergites 1–2; weakly upcurved female ovipositor, about 1.9 times as long as the hind tibia length; and tyloids on male fl agellomeres 5–9. D i s t r i b u t i o n . Palaearctic; previously recorded from Russia, Japan (Humala, 2007, 2019; Wahl & Gauld, 1998), and Germany (Riedel et al., 2021), fi rst record for Ukraine. Subfamily Microleptinae Townes, 1958 Microleptes splendidulus Gravenhorst, 1829 (fi gs 11–12) M a t e r i a l . Poland: Podlasie Voivodeship: Biebrza National Park, ‘Zdroj’, 2 km NE of Kostry-Litwa, YPT on picket (about 1 m) near small river, 15.10.2006, 1 { (A. Kostro-Ambroziak) (UwB). Ukraine: Transcarpathian Region: Vynogradiv, oak forest, 280 m, 48.1383 N, 23.0737 E, MT No. 2, 17.05–10.06.2017, 1 } (Varga) (SIZK). D i a g n o s i s . Th e species is characterized by the weakly swollen and apically rounded clypeus; antenna with 14 fl agellomeres, fi rst fl agellomere short, at most 3 times longer than width; propodeum with costulae present; stout legs with hind femora about 3.0–3.7 times longer than width, and smooth hind coxa; and tyloids on male fl agellomeres 1–2(3). D i s t r i b u t i o n . Holarctic; fi rst record for Poland and Ukraine. Discussion Th e Cylloceriinae fauna of Europe contains 23 species belonging to six genera (Hum- ala, 2007; Yu et al., 2016), of them almost half of the species (11) are members of the genus Cylloceria. Seven species of this genus have been recorded from Poland, of which only 3 seem to be valid records: Cylloceria caligata, C. melancholica (Sawoniewicz, 1982) and C. sylvestris (Gravenhorst, 1829) (van Rossem, 1987). Another four, C. alpigena (Strobl, 1902), C. imperspiqua Rossem, 1987, C. occupator (Gravenhorst, 1829), and C. fusciventris (Hellén, 1940) are rare European species with questionable taxonomic status, listed in the Polish checklist of Kazmierczak (2004) without any mention of label data or voucher speci- mens. It seems that Kazmierczak prepared his catalogue (2004) largely based on records Figs 11–12. Microleptes splendidulus: 11 — habitus (lateral view); 12 — face (frontal view). 491New Records of the Subfamilies Cylloceriinae and Microleptinae (Hymenoptera, Ichneumonidae)… from bordering countries, so that we assume that he has included these four Cylloceria species to the fauna of Poland without attesting to their actual presence in the country. It is also supported by the fact that these four species were not included in the recent Polish Ichneumonidae checklist provided by Bogdanowicz and co-authors (2007). T h e Ukrainian Cylloceria fauna contains only two common and widely distributed species, C. caligata and C. melancholica, recorded by Humala (2002) and both collected during this study in the Ukrainian Carpathians. C. melancholica seems to be the most common species, having being found in different forest types at different altitudes, while C. caligata was collected only in the coniferous forests of the Gorgany massif. Kazmierczak (2004) also listed two Apoclima species from Poland, A. haeselbarthi Rossem, 1987 and A. signaticorne Förster, 1881, but, given the above, the presence of this genus in both Poland and Ukraine should be regarded as doubtful. The genus Allomacrus is represented by 3 species in Europe, of which only A. arcticus is common and widely distributed. This species was recorded from Western Ukraine by Humala (2002), while its presence in Poland remains questionable as based only on an old paper of Hedwig (1962). Unexpectedly, we collected in the Ukrainian Carpathians another species of this genus, A. longecaudatus, which is known only from Austria and Germany (Yu et al., 2016; Riedel et al., 2021). We can therefore assume that this species is characteristic of high altitude insect communities in mountain systems within the whole Europe. Until this study, the distribution of the genus Entypoma in Poland was based only on an old record of E. robustum Förster, 1871 by Hedwig (1962), while Ukrainian list contains all European species (Humala, 2007). The newly collected E. robustator and E. sus- piciosum in Polish Biebrza National Park can be treated as the first reliable modern records of the genus for the country. T h e genus Hyperacmus contains 5 described species (Yu et al., 2016), of which only the cosmopolitan H. crassicornis is known from Poland (Sawoniewicz, 2001) and Ukraine (Humala, 2007). Lastly, the monotypic genus Rossemia, with the Pa- laearctic species R. longithorax, was recorded from Japan, Russia (Russian Far East, Karelia, Leningrad Province) and Germany. In this paper, we provide the new European record of the genus, expanding its known distribution southward. All the three Carpathian speci- mens of this species were collected near old dead beech trunks infected by numerous sap- roxylic dipterans. We hope that further studies on this locality will shed light on the biology of this genus, as well as that of other genera collected there, such as the genus Allomacrus. The European microleptines belong to the genus Microleptes with 5 species in the region (Humala, 2007; Yu et al., 2016). Of them, Microleptes aquisgranensis (Förster, 1871) is reported from Poland (Bogdanowicz et al., 2007). During this study we collected an additional species, Microleptes splendidulus Gravenhorst, 1829, in both, Poland (Biebrza National Park) and Ukraine (Carpathian Biosphere Reserve). This species was reported from Ukraine by Meyer (1936). This record should be re-checked as this paper is outdated and containing numerous incorrect data (Humala, 2003). Unfortunately, the collection of Meyer was lost during the Second World War and none of these records can be considered valid as there are no voucher specimens available. 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