Кавказский энтомол. бюллетень 14(1): 7–9 © CAUCASIAN ENTOMOLOGICAL BULL. 2018


New recorded species of Heteraphorura Bagnall, 1948 (Collembola: Onychiuridae) from Georgia

with a key to the Holarctic species

Новая находка представителя рода Heteraphorura Bagnall, 1948 (Collembola: Onychiuridae) в Грузии

с определительной таблицей голарктических видов

Sh. Barjadze, G. Nebieridze Ш. Барджадзе, Г. Небиеридзе


Institute of Zoology, Ilia State University, Giorgi Tsereteli str., 3, Tbilisi 0162 Georgia. E-mail: shalva.barjadze@yahoo.com Институт зоологии, Государственный университет Илии, ул. Георгия Церетели, 3, Тбилиси 0162 Грузия

Key words: Collembola, new record, Caucasus, cave, distribution.

Ключевые слова: Collembola, новое указание, Кавказ, пещера, распространение.


Abstract. One springtail species, Heteraphorura iranica Kaprus’, Shayanmehr et Kahrarian, 2017 is recorded from the Caucasus for the first time. A key to the Holarctic species of the genus Heteraphorura Bagnall, 1948 including

H. magnina (Wray, 1950) is given.

Резюме. Впервые с Кавказа указана ногохвостка Heteraphorura iranica Kaprus’, Shayanmehr et Kahrarian, 2017. Приведена определительная таблица видов рода Heteraphorura Bagnall, 1948, включающая вид

H. magnina (Wray, 1950).

Introduction

There are ca. 8700 springtail species in the world [Bellinger et al., 1996–2018]. Springtails are good bioindicators of environmental pollution and restoration in mined areas [Dunger et al., 2001; Fountain, Hopkin, 2001; Zeppelini et al., 2009]. At present, 101 species of springtails are known from Georgia [Barjadze et al., 2012, 2016; Vargovitsh, 2013, 2017; Djanashvili et al., 2014; Barjadze,

Murvanidze, 2016].

After investigation of Collembola separated from the soil samples collected in Marshy forest in Kolkheti Lowland and from leaf litter and moss in the entrance zone of karstic Sakajkari Cave (Imereti Region, Western Georgia) we determined specimens as Heteraphorura iranica Kaprus’, Shayanmehr et Kahrarian, 2017 (Fig. 1) using the original description of this species [Kaprus’ et al., 2017]. The above mentioned species was described from the soil in forest areas in Iran [Kaprus’ et al., 2017]. So far only one species from the genus Heteraphorura Bagnall, 1948, H. variotuberculata (Stach, 1934), was recorded from Georgia [Barjadze, Djanashvili, 2008].

The genus Heteraphorura was established by Bagnall [1948] with the type species Onychiurus variotuberculatus Stach, 1934. Species of the genus Heteraphorura are characterized by absence of posterior cephalic pseudocelli;

image

DOI: 10.23885/1814-3326-2018-14-1-7-9

body without lateral pseudocelli; thoracic tergum I and abdominal tergum III without pseudocelli; granulation strong without granular areas; Ant III O with simple papillae and guard setae; different kind of vesicles are in PAO: simple, bilobed, multilobed or granulated; furca reduced to small area of fine granulation with 4 setulae arranged in one row or an arch; strong anal spines located on distinct papillae closely together; distal whorl of Tibiotarsi I–III with 11 chaetae, sensilla on the head and body indistinct [Pomorski, 1998, 2002]. Pomorski [2002] suggested a new diagnosis of the genus Heteraphorura, synonymised Japonychiurus Yoshii, 1996 with Heteraphorura and transferred 11 species and one subspecies to the abovementioned genus. Arbea [2014] distinguished three species groups within the genus Heteraphorura based on the shape of PAO vesicles: Nearctic, Euro-asiatic and Oriental. Nowadays, there are 17 species in the genus Heteraphorura, from which 7 are distributed in Nearctic and 10 species and 1 subspecies in Palaearctic [Pomorski, 2002; Arbea, 2014; Bernard, 2015; Kaprus’ et al., 2017].

Keys to the species of the genus Heteraphorura in Nearctic and Palaearctic were published by Pomorski [2002] and Kaprus’ and his co-authors [2017] respectively, but one species in the key [Pomorski, 2002], H. magnina (Wray, 1950) from Nearctic, was omitted there. We included the above mentioned species and suggested key for Holarctic Heteraphorura spp.

Material and methods

Material. Heteraphorura iranica: Georgia: 2♂, 3♀, Kolkheti Lowland, in soil of Marshy forest, 42°17ʹ8.34ʺN / 41°39ʹ54.89ʺE, 7 m a.s.l., 20.08.2009 (leg. M. Salakaia); 1♀, 2♂ subadult, Kolkheti Lowland, in soil of Marshy forest close to Anaklia, 42°22ʹ17.05ʺN / 41°36ʹ6.30ʺE, 0 m a.s.l., 20.08.2009 (leg. M. Salakaia); 2♂ subadult, Imereti Region, Chiatura district, Sakajkari Cave, entrance zone, in leaf litter and moss, 42°19ʹ33.80ʺN / 43°16ʹ14.29ʺE, 619 m a.s.l., 19.04.2017 (leg. G. Nebieridze). Material is deposited at Institute of Zoology, Ilia State University, Tbilisi, Georgia.

8 Sh. Barjadze, G. Nebieridze



image

Fig. 1. Habitus of Heteraphorura iranica from Kolkheti Lowland, Georgia.

Рис. 1. Габитус Heteraphorura iranica с Колхидской низменности, Грузия.


The morphological characters of Georgian specimens of Heteraphorura were congruent in the original description of Heteraphorura iranica in all diagnostic characters.

The following abbreviations are used in the text: Abd – abdominal tergites; Ant – antenna; Ant III O – antennal III sense organ; Asp – anal spines; Cl – claw; Emp – empodium; MVO – male ventral organ; PAO – postantenal organ; pso – pseudocelli; VT – ventral tube.

Key to the species of the genus Heteraphorura

  1. Ant base with 4 pso 2

  2. PAO with simple and bilobed vesicles. Cl without tooth. Pso formula dorsally: 40/011/11035 ................................

    ....................................... H. magnina (Wray, 1950) (USA)

  3. Emp rudimental. It length equal 1/4 or less of inner edge of Cl. Pso formula dorsally: 20/011/11023(2,4) ...............

    H. carpatica (Stach, 1954) (Poland, Slovakia, Ukraine)

  4. PAO with granulated vesicles 5

  5. Ant bases with 2 pso 6

  6. Abd V with 2 pso. Abd VI with only m2 seta. Pso formula dorsally: 20/011/11022 .......................................................

    ......... H. pseudoseolagensis (Martynova, 1981) (Russia)

  7. Abd VI with 3 medial setae. Only m2 setae present on the Abd VI. Pso formula dorsally: 20/011/11023 ..............

    H. iranica Kaprus,’ Shayanmehr et Kahrarian, 2017 (Iran)

  8. Abd V with 1–2 pso. Pso formula dorsally: 30/011/1101(0)2(1) ..............................................................

    .......... H. longisetosus (Lee et Park, 1986) (South Korea)

  9. Abd IV with m0 seta. Pso formula dorsally: 30/011/11023

    ............ H. seolagensis (Lee, 1974) (South Korea, Russia)

  10. MVO absent. Pso formula dorsally: 30/011/11023(4) .....

    ....................................... H. japonica (Yosii, 1967) (Japan)

  11. Emp with distinct basal lamella 12

  12. PAO with only simple vesicles. Pso formula dorsally: 20/011/1(0)1(0)023 ..............................................................

    ................................... H. subtenuis (Folsom, 1917) (USA)

  13. PAO with 25–28 simple, bi- and trilobed vesicles. Male without MVO. VT with 13–19 setae apically. Pso formula dorsally: 20/011/11022 .......................................

    ......................... H. orientalis (Martynova, 1976) (Russia)

  14. PAO with 17–25 simple and multilobed vesicles. Cl with inner tooth 15

  15. m1 setae present on Abd I–III. Pso formula dorsally: 3(2)0/011/11022(3) ..............................................................

    .................... H. variotuberculata (Stach, 1934) (Europe)

  16. PAO with 13–16 simple and bilobed vesicles 17

  17. Tip of antenna without cauliflower-like papilla. Cl without inner tooth. Pso formula dorsally: 30/011/11023(4–5) ..............................................................

........... H. cassa (Christiansen et Bellinger, 1980) (USA)

................................... H. intricata Pomorski, 2002 (USA)

Acknowledgements

We would like to thank Dr. Ulrich Burkhardt (Senckenberg Museum of Natural History, Görlitz, Germany) and anonymous referees for the valuable comments on the manuscript.

This manuscript is prepared with the financial support of Shota Rustaveli National Science foundation in the frame of the grant: “Biodiversity of the invertebrates in the karst caves of Zemo Imereti Plateau” (ref. SRNSF 217222) and the DAAD program: Research Stay for University Academics and Scientists (A/11/05439).

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Received / Поступила: 27.04.2018 Accepted / Принята: 12.06.2018