ZOBODAT - www.zobodat.at Zoologisch-Botanische Datenbank/Zoological-Botanical Database Digitale Literatur/Digital Literature Zeitschrift/Journal: Scopolia, Journal of the Slovenian Museum of Natural History, Ljubljana Jahr/Year: 1990 Band/Volume: Suppl_1 Autor(en)/Author(s): Gogala Andrej, Gogala Matija, Günther Hannes Artikel/Article: New records of Gardena insignis Horvth, 1887 (Emesinae, Reduviidae) in Istria (Yugoslavia). 65-68 ©Slovenian MuseumSCOPOLI of Natural A History, Suppl. Ljubljana, 1, Slovenia;pp. 65-68, download Nov. www.biologiezentrum.at 1990 65 New records ofGardena insignis Horvth, 1887 (Emesinae, Reduviidae) in Istria (Yugoslavia) Andrej GOGALA x>, Matija GOGALA 2> and Hannes GÜNTHER 3> 1> Pot na Tičnico 6, YU-61351 Brezovica 2) Prirodoslovni muzej Slovenije, YU-61001 Ljubljana 3> Eisenacherstr. 25, D-6507 Ingelheim Received: Sept. 3rd, 1989 Keywords: Heteroptera, Reduviidae, Emesinae, Gardena insignis, Yugoslavia ABSTRACT New records of rarely found assassin bug Gardena insignis Horvath in a Slovene and Croatian part of Istria are reported. IZVLEČEK NOVE NAJDBE STENICE GARDENA INSIGNIS HORVATH, 1887 ('EMESINAE. R E D U V IID A E ) V ISTRI Avtorji poročajo o novih najdbah stenice vrste Gardena insignis (Emesinae, Reduviidae) v slovenskem in hrvaškem delu Istre. During the 3rd International Meeting on Rhynchota Fauna of Balkan and Adjacent Regions, some participants went on a collecting trip to a Croatian part of Istria. On this occasion one of us, H. Günther, caught one specimen of Gardena insignis near Savudrija (Salvore), a rarely found and interesting species of the subfamily Emesinae of Reduviidae. The following day further 7 specimens were recorded by Berend Aukema, Wageningen, at the same place. Together with Gardena a similar, but smaller Emesinae, Metapterus linearis , occurred in high population density. Gardena insignis is a big, needle-shaped assassin bug, reaching up to 18 mm body-length. It was first described by Geza von HORVATH in 1887, who found it near Gorica (Gorizia). We do not know the exact site of the locus classicus of the first record of Gardena and we also do not know if it belongs to Yugoslavia or to Italy at present, as Gorica is now divided into an Italian and an Yugoslavian part. Gardena insignis was later found in Italy (Friuli-Venezia giulia, Lombardia), Spain (Catalunya) and Israel (see TAMANINI 1962 and DIOLI 1981). Accordingly we can say it is a Mediterranean species. The day after the meeting was finished, two of us (A. and M. Gogala) decided to look for Gardena in places described by Günther and others: In high grass under bushes of Spartium junceum, near Savudrija. It was at Zambratija where we succeeded and found two specimens of G ardena and a great number of Metapterus. We decided to look for them also in the Slovene coastal region. We went to the coast again on September 17, 1990 and looked for them first, near Strunjan under S p a rtiu m in high grass but ©Slovenian Museum of Natural History, Ljubljana, Slovenia; download www.biologiezentrum.at 66 SCOPQLIA, Supplemcntum 1 without success. The difference between the regions near Zambratija and Strunjan is the nature of the geological substrate. In Zambratija it is limestone, in Strunjan it is Flysch. So we also went to Stena near Dragonja, an isolated island of limestone in the Slovene part of Istria. We first found several specimens of Metapterus linearis and then also one of Gardena insignis. This was the first record of Gardena in Slovenia since HORVÄTH’s signalization. M etapte rus was previously recorded near Črni Kal which is also situated in the carstic region. So it seems, that Gardena insignis and Metapterus linearis live only on calcareous substrate, at least in Istria. We assume this to be truefor two other species of Heteroptera found in the same habitat: Berytinus hirticornis and Anaptus major. But this assumption should be checked in many more Slovenian localities, as M etapterus lives on sandy and muddy substrates in Austria (region of the Neusiedler See) and Berytinus hirticornis occurs in grass growing on calcareous-free porphyr and devonian schist in south-western parts of Germany. Table 1. Species of bugs, found in three localities in similar habitats (in high grass, under bushes of S p a rtiu m etc.) during September 1989. Zambratija Stena, Dragonja Strunjan 2. 9. 1989 17. 9. 1989 17. 9. 1989 Gardena insignis X X Metapterus linearis X X Berytinus hirticornis X X Anaptus major X X Micrelytra fossularum X X Ceraleptus lividus X Ceraleptus gracilicornis X Aptus mirmicoides X Megalonotus dilatatus X Raglius confusus X Beosus maritimus X X Nabis pseudoferus X Rhinocoris sp (larvae) X Paromius gracilis X ©Slovenian Museum of Natural History, Ljubljana, Slovenia; download www.biologiezentrum.at A. Gogala cl al.: New records of Gardena insignis...______________ 67 Fig. 1. Gardena insignis Hv., Stena near Dragonja, 17.9.1989 U U M X 9 LUTH (10*10 kn) I I I I I I 1 I I I I I I I I I M I I lyfl/ v<■ I I I I I UTM (10*10 kn) 8 [ ? UL83 7 *-\ J s UL93 6 ■-v 1. < UL76 ~v > UL98 <r'1 MS C i 1 " J \ -- j 3 S' \ _ j \ \ 2 j — r 1 'S c "V 0 ) 9 I t -V } 8 £ j \ 7 ' J ? \ f ' 6 ( \ c. f j i )/ » r 1 1 LL5 4 ~ / K I ;c 3 m — 's V T 2 T y--' uni ueiia iii^iyiuä i ( \ 0 Horvath1887 0 1 r f T J (■ 9 T" 1 ♦ Diol1 i 9 7 7 - 78 8 \' V \\ 0. \ i V ti J f J i ' J » Giinther, Goaala1989 K e •i) 1 î Li^, f i 7 8 9 0 1 1 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 l 2 3 4 5 6 7 8 9 Fig. 2. Localities of Gardena insignis in Yugoslavia and Friuli-Venezia giulia. ©Slovenian Museum of Natural History, Ljubljana, Slovenia; download www.biologiezentrum.at 68 SCOPOLIA, Supplementum 1 References DIOLI P., 1981: Eterotteri del Friuli-Venezia giulia2 . Interessanti emesini dei dintorni di Grado (Hemiptera Heteroptera). Gortania Atti Mus. Friul. Storia Nat., Udine, 3: 235-244 HORVATH G., 1887: Notes additionelles sur les Hémiptères Hétéroptères de Gorice (Illyrie). Rev. Entom. Soc. Fr. Entom. 6: 68-74 TAM ANINI L., 1962: Interessanti reperti emitterologici nella pianura padano-veneta (Heteroptera: Reduviidae et Lygaeidae). Mem. Mus. Civ. St. Nat., Verona, 10: 243-250 Note added in proof: According to P. V. Putchkov, Fauna Ukraini, Polužestokokrilie, 21, 5: (1987) is Metapterus linearis Costa, 1862 from Istria correctly M. caspicus (Dohrn, 1863)..