Analele Ştiinţifice ale Universităţii „Al. I. Cuza” Iaşi, s. Biologie animală, Tom LIV, 2008 THE ORTHOPTERA FAUNA (INSECTA: ORTHOPTERA) FROM PAŞCANI AND SURROUNDINGS (ROMANIA, IAŞI COUNTY) Ionuţ Ştefan IORGU “Al. I. Cuza” University Iaşi, Faculty of Biology, Bd. Carol I 20A, 700505 Iaşi, Romania, [email protected] Abstract. Paşcani town is located on the western part of Iaşi County, between the rivers Siret and Moldova, this region being a mosaic of ecosystems: grasslands and lawns, decidous and coniferous forests with glades. During our studies on this area, which begun in 2001, there were identified 60 orthoptera species. Among those, 31 species live in town ecosystems. This high number of species is due to the higher temperatures, with 2-3ºC inside the town. The forest Codrii Pascanilor represents the eastern limit for the distribution area of Isophya stysi, so far this species being known from the western and interior parts of the Carpathians Mountains. The species Acheta domestica and Tetrix tuerki are new reportings for Moldova, meanwhile the hybrid Chorthippus albomarginatus × oschei is new for Romanian fauna. Keywords: Orthoptera, Chorthippus albomarginatus × oschei, faunistics, Paşcani. Rezumat. Fauna de ortoptere (Insecta: Orthoptera) din Paşcani şi împrejurimi (România, judeţul Iaşi) Oraşul Paşcani este situat în partea de vest a judeţului Iaşi, între râurile Siret şi Moldova, zona prezentând un mozaic de ecosisteme: pajişti şi fâneţe, păduri de foioase şi răşinoase cu poieni. Pe parcursul cercetărilor intreprinse în zonă începând cu anul 2001, au fost identificate 60 de specii de ortoptere. Dintre acestea, 31 de specii trăiesc în ecosistemele din oraşul Paşcani. Prezenţa acestui număr ridicat de ortoptere se datorează temperaturii mai ridicate cu 2-3°C în interiorul oraşului. Codrii Paşcanilor reprezintă limita estică a arealului speciei Isophya stysi, până acum specia fiind cunoscută din interiorul arcului carpatic. Speciile Acheta domestica şi Tetrix tuerki sunt la prima semnalare pentru Moldova, iar hibridul Chorthippus albomarginatus × oschei este semnalare nouă pentru fauna României. Cuvinte cheie: Orthoptera, Chorthippus albomarginatus × oschei, faună, Paşcani. Introduction Paşcani is located in the western part of Iaşi County, at 1km west from the river Siret and 10km east from the river Moldova. The surroundings of this town are a mosaic of ecosystems: Populus alba and Salix alba forests at the edges of Siret river (site no. 30 on the map); Carpinus betulus, Robinia pseudacacia and Pinus sylvestris forest with mezophilous and hygro-mezophilous glades (sites no. 1-10 on the map) with: Campanula cochlearifolia, Elymus europaeus, Genista tinctoria, Taraxacum officinale, Achillea millefolium, Bellis perennis, Ranunculus acer, Alopecurus pratensis, Verbascum phlomoides, Lamium album, Poa nemoralis, Poa annua, Poa bulbosa, Bromus hordeaceus, Dactylis glomerata, Trifolium repens, Rubus idaeus, Coronilla varia, Fragaria vesca, Medicago falcata etc., between the town and Moldova river (Codrii Paşcanilor forest); hygrophilous, mezofilous and mezo-xerophilous lawns near the town (sites 11-16, 23-36 on the map) with: Poa nemoralis, Elymus europaeus, Genista tinctoria, Taraxacum officinale, Viola odorata, Agropyrum repens, Bellis perennis, Ranunculus acer, Trifolium sp., Achillea millefolium, Aristolochia clematitis, Poa annua, Bromus hordeaceus, Dactylis glomerata, Setaria viridis, Lepidium ruderale, Festuca sp., Lolium perenne, Cynodon dactylon, Alopecurus pratensis, Verbascum phlomoides, Lamium album, Tusilago farfara, Rosa canina, Prunus spinosa, Typha latifolia, Cynodon dactylon, Dactylis glomerata, Mentha aquatica, Ranunculus sardous, Alopecurus sp., Carex sp., Iris pseudacorus, Juncus effusus, Butomus umbellatus, Alisma Ionuţ Ştefan Iorgu plantago-aquatica etc. The areas studied inside the town are: the parks (sites no. 19 and 21 on the map) with Carpinus betulus, Morus nigra, Sambucus nigra, Aesculus hippocastanum, Gleditschia faba, Syringa vulgaris, Poa nemoralis, Elymus europaeus, Genista tinctoria, Taraxacum officinale, Viola odorata, Achillea millefolium, Bellis perennis etc.; the railways area (sites no. 18 and 20 on the map) with predominant mezophilous and mezo-xerophilous vegetation: Papaver somniferum, Viola tricolor, Festuca sp. (near the railways there are some hygrophillous small lawns, with Carex sp. and Typha sp.); Fântânele area (site no. 22 on the map) with hygrophilous and mezo-hygrophilous grasslands and lawns: Carex gracilis, Carex riparia, Typha latifolia, Typha angustifolia, Iris pseudacorus, Juncus effusus, Butomus umbellatus etc. and a few private properties (site no. 17 on the map), with flowers or crops: Zea mays, Trifolium sp., Vitis vinifera Chrysanthemum sp., Rosa sp., Antirrhinum majus, Paeonia festiva, Tulipa sp., Mentha longifolia, Clematis sp., Lonicera nigra etc. Material and Methods The investigated area has diverse ecosystems from Pascani town and the surroundings, the collecting zones being shown in Fig. 1. Collecting of the material was made with the entomological net or by hand. The identification was made according to the keys of Bela Kis (1976, 1978) and the papers of Otto von Helversen (1986), Otto von Helversen and Varvara Y. Vedenina (2003, 2007). The species nomenclature was reviewed according to http://osf2.orthoptera.org/HomePage.aspx (online version at 14th of January 2008). The photos were taken with a Canon A640 digital camera and the stridulations were recorded with a Sony ICD SX 56 digital recorder. The electro-microscopy photos were taken with a Vega Tescan electronic microscope. Figure 1. Map with the collecting/observing areas in Paşcani and surroundings. The collecting/observing areas marked on the map are: 1-10 – Codrii Paşcanilor sites; 11 – Topile site; 12 – Gâşteşti site;13 – Sodomeni site; 14- 16, 23, 34-36 – Paşcani sites (near town); 17-22 – Paşcani sites (inside town); 24 – Lunca site; 25 – Valea Seacă site; 26-33 – Siret sites. Analele Ştiinţifice ale Universităţii „Al. I. Cuza” Iaşi, s. Biologie animală, Tom LIV, 2008 Results and Discussion Our studies on the Orthoptera fauna in this area were realized between 2001- 2007 and show a total number of 60 species of Orthoptera, amoung those 31 being observed in town’s ecosystems and 59 species observed in the outside town ecosystems (Table 1 and Fig. 2). Table 1. Comparison between the Orthoptera species found in Paşcani and in the surroundings (the numbers from “inside/outside town ecosystems” columns are the numbers marking the collecting areas in Fig. 1; please note that eq. 2-6 is the abbreviation for the sites: 2, 3, 4, 5, 6). Crt. Inside town Outside town no. Species ecosystems ecosystems Suborder Ensifera Family Tettigoniidae 1. Phaneroptera falcata 17, 19, 20 1-11, 16 2. Leptophyes albovittata 19, 20 1-11, 16, 23, 30 3. Isophya stysi - 3, 6 4. Isophya zubowskii - 2, 7 5. Barbitistes constrictus constrictus - 2, 6 6. Poecilimon fussi - 2, 3, 6, 10, 30 7. Poecilimon schmidti - 2 8. Meconema thalassinum - 1-9 9. Conocephalus dorsalis 22 23, 24, 25, 29, 30 10. Conocephalus fuscus 18 - 20, 22 1-17, 21-36 11. Ruspolia nitidula - 25, 30 12. Tettigonia viridissima 17 - 22 1-16, 23-36 13. Tettigonia caudata caudata 20 3, 11, 14-16, 24, 30 14. Decticus verrucivorus verrucivorus - 2, 3, 6, 10, 16, 30 15. Platycleis albopunctata grisea - 3 16. Tessellana veyseli - 30 17. Metrioptera bicolor bicolor 20, 22 1-16, 23-36 18. Metrioptera roeselii roeselii - 6, 23-25, 30 19. Metrioptera fedtschenkoi vasilii 18, 22 1-7, 10, 11, 14-16, 23-36 20. Pholidoptera griseoaptera 19, 21 1-10 21. Pachytrachis gracilis - 10 22. Ephippiger ephippiger ephippiger - 6 Family Gryllidae 23. Gryllus campestris 17 - 22 1-16, 23-36 24. Acheta domestica 17 - 25. Melanogryllus desertus 18, 20 2, 3, 10-16, 23, 26-36 26. Modicogryllus frontalis 18, 20 2, 3, 6, 10-16, 23, 26-36 27. Pteronemobius heydenii heydenii - 2 28. Oecanthus pellucens pellucens 17 - 22 1-16, 23-36 Family Gryllotalpidae 29. Gryllotalpa gryllotalpa 17- 22 11, 13-16, 23, 30-36 Suborder Caelifera Family Tridactylidae 30. Xya variegata - 30-33 Family Tetrigidae 31. Tetrix subulata 18, 22 2, 10, 16, 23-36 32. Tetrix undulata - 2-4, 10, 16 33. Tetrix bipunctata bipunctata - 2-6, 10, 11, 16, 30 34. Tetrix tenuicornis 18, 20, 22 1-16, 23-36 35. Tetrix tuerki - 30, 31 Family Acrididae 36. Calliptamus italicus italicus 18, 20 2, 3, 10-12, 29, 30 37. Pezotettix giornae - 16, 30 38. Stethophyma grossum 22 23, 24, 25, 29, 30 39. Aiolopus thalassinus thalassinus 18, 22 23-36 Ionuţ Ştefan Iorgu Crt. Inside town Outside town no. Species ecosystems ecosystems 40. Paracinema tricolor bisignata - 25, 30 41. Oedipoda caerulescens caerulescens 18, 20 2, 3, 8, 10, 11, 26, 29, 30 42. Sphingonotus caerulans caerulans 18, 20 2, 10, 11, 29, 30 43. Euthystira brachyptera brachyptera - 1-10 44. Chrysochraon dispar dispar - 2, 3, 6 45. Dociostaurus brevicollis - 10, 30 46. Stenobothrus stigmaticus stigmaticus 22 1-3, 10, 11, 16, 29, 30-36 47. Stenobothrus lineatus lineatus 18, 19, 20, 22 1-16, 23-36 48. Stenobothrus nigromaculatus nigromaculatus - 2, 10 49. Omocestus rufipes 17, 18, 20, 22 1-16, 23-36 50. Omocestus haemorrhoidalis haemorrhoidalis - 10, 16 51. Gomphocerripus rufus - 6, 10 52. Chorthippus apricarius apricarius 20 1-11, 16 53. Chorthippus biguttulus hedickei 17 - 20, 22 1-16, 23-36 54. Chorthippus brunneus brunneus 17 - 20, 22 1-16, 23-36 55. Chorthippus mollis mollis - 16, 30 56. Chorthippus albomarginatus × oschei 17 - 20, 22 1-4, 6-16, 23-36 57. Chorthippus dorsatus dorsatus