An annotated check-list of the aquatic and semi-aquatic bugs of the infraorders Enicocephalomorpha, Dipsocoromorpha, Nepomorpha, Gerromorpha, and Leptopodomorpha of Turkey and its geographical parts (Turkish Thrace [i.e., European Turkey] and Anatolia [i.e., the Asian Turkey]) is presented. The nomenclatoric history of Alpagut Kıyak, 1995 (= Harpago Linnavuori, 1951, = Raunocoris Baena & Alonso-Zarazaga, 2009) is reviewed, its gender is fixed, and two new combinations are proposed: Alpagut maroccanus (Wagner, 1960) comb. nov., and Alpagut medius (Rey, 1888) comb. nov. The list is based on a survey of all published records as well as on examination of collection material, including recent material collected in the poorly explored Turkish Thrace. The following numbers of species are accepted as occurring in Turkey: Enicocephalomorpha—1 species (Asian Turkey only), Dipsocoromorpha—2 species (Asian Turkey only), Nepomorpha—49 species (29 in European and 47 in Asian Turkey), Gerromorpha—27 species (10 in European and 25 in Asian Turkey), and Leptopodomorpha—21 species (6 in European and 20 in Asian Turkey). Forty species are known from both European and Asian Turkey, whereas 5 are recorded only from European Turkey and 55 only from Asian Turkey. Eight species and subspecies, Micronecta scholtzi (Fieber, 1860), Hesperocorixa sahlbergi (Fieber, 1848), Sigara iranica Lindberg, 1964, Hebrus ruficeps Thomson, 1871, Velia affinis filippii Tamanini, 1947, Velia rhadamantha rhadamantha Hoberlandt, 1941, Gerris kabaishanus Linnavuori, 1998, and Saldula pilosella pilosella (Thomson, 1871), are reported from Turkey for the first time; and four species, Sigara scripta (Rambur, 1840), Corixa punctata (Illiger, 1807), C. panzeri (Fieber, 1848), and Gerris argentatus Schummel, 1832, are new records for Turkish Thrace. First exact localities of several other species are provided as well. Three species, Sigara kervillei (Poisson, 1927), Microvelia hozari Hoberlandt, 1952, and Velia mariae Tamanini, 1971, seem to be endemic to Anatolia; 22 species occur only in Turkey and the adjacent regions (Balkan Peninsula, Cyprus, Near East, Iran, and Transcaucasia). The 75 remaining species have a wider distribution. Occurrences of 10 species, previously recorded from Turkey, need further confirmation. Finally, 19 species-group taxa are excluded from Turkish fauna as they are based on proven or suspected misidentifications or taxonomic confusion: Micronecta minutissima (Linnaeus, 1758), Cymatia bonsdorffii (C. R. Sahlberg, 1819), Arctocorisa carinata carinata (C. R. Sahlberg, 1819), Callicorixa praeusta praeusta (Fieber, 1848), Hesperocorixa castanea (Thomson, 1869), Hesperocorixa occulta (Lundblad, 1929), Sigara hoggarica Poisson, 1929, Sigara scotti (Douglas & Scott, 1868), Heleocoris minusculus (Walker, 1870), Anisops debilis canariensis Noualhier, 1893, Velia caprai caprai Tamanini, 1947, Aquarius najas (De Geer, 1773), Gerris costae costae (Herrich-Schaeffer, 1850), G. gibbifer Schummel, 1832, G. lateralis Schummel, 1832, Saldula fucicola (Sahlberg, 1870), S. pilosella hirsuta (Reuter, 1888), Salda morio Zetterstedt, 1838, and S. muelleri (Gmelin, 1790). In addition, first records of Aquarius ventralis (Fieber, 1860) from Syria, and Saldula melanoscela (Fieber, 1859) and Leptopus marmoratus (Goeze, 1778) from Lebanon, are provided. The previously published records of Rhagovelia nigricans nigricans (Burmeister, 1835) from Cyprus and Israel (Hoberlandt 1952b) belong to R. infernalis africana Lundblad, 1936.

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This paper focuses on isolation and identification of airborne and waterborne fungi from different parts of Terkos Lake located in Istanbul (Turkey). The quantitative and qualitative fungal composition of the air and water of the Lake was surveyed monthly for a year (August 2000-July 2001). Water samples were taken at five different stations at Terkos Lake. Airborne fungal spore levels were estimated by exposing a petri dish containing Rose-Bengal streptomycin agar medium to air for 15 minutes. A total of 2372 fungal colonies (1032 from air and 1340 water) was counted on 216 petri plates. We isolated twenty mould species belonging to 9 genera. Scopulariopsis brevicaulis, Penicillium expansum and Cladosporium herbarum were the most abundant species (22.0%, 13.4% and 12.9%, respectively). Cladosporium herbarum and sphaerospermum are very common in air samples (29.7% and 27.0%, respectively). Many of the species isolated are rarely in the atmospheric and water environment such as Aspergillus niger and Cladosporium variabile. Statistical analysis revealed a positive correlation between total CFUs and a number of environmental factors.

The numerical and proportional distributions of benthic macroinvertebrates in Tunca (Tundja, Tundzha) River (Edirne/Turkey) were determined from July 2002 to June 2003 at monthly intervals at four different stations. It was found that the benthic macrofauna consisted of 63% Oligochaeta, 24% Chironomidae larvae, and 13% Varia by numbers. According to the Shannon-Wiener index, Tunca River had a diversity of 1.36; station 2 and September were found to have the highest diversity while station 4 and December to have the poorest. According to Bray-Curtis similarity index, stations 2 and 3 and April and May were found to be the most similar to each other while stations 1 and 4 and August and January were found to be the most different from each other for the dynamics of the benthic macrofauna. Also some physicochemical parameters of the water (water temperature, electrical conductivity, pH, dissolved oxygen, chloride, total hardness, NO 3 --N, NO 2 --N, sulfate, phosphate, biochemical and chemical oxygen demands) were analyzed. Pearson correlation index supported the relationships between the dynamics of organisms and physicochemical variables. The relation between the number of macroinvertebrates and pH (r = +0.57, P a 0.05) was direct proportional while the relation between the number of macroinvertebrates and NO 3 --N (r = -0.99, P a 0.05) was inverse proportional. Furthermore, the Chironomidae larvae of Bryophaenocladius muscicola and Mesosmittia flexuella were new records for Turkish Thrace region. High pH and supersaturated oxygen levels, hard water quality, second quality levels of NO 3 --N, BOD, COD and fourth quality levels of NO 2 --N as well as the density of 490 individuals m -2 for 124 taxa and the diversity of 1.36 showed that similar studies should be repeated periodically in Tunca to determine the future of the river.

Many aquatic insect species, including aquatic Hemiptera, are parasitized by water mite larvae. Although this situation may cause damaging impacts to the hosts, the mites can disperse and colonize new localities in this way. Little is known about the frequency of water mite ectoparasitism amongst the aquatic Hemiptera in Turkey. In this study, larval water mite parasitism on aquatic Hemiptera, which have been collected from different localities in Turkish Thrace, was evaluated. It was found that only nine individuals, belonging two different species in a total of 367 hemipteran specimens, were parasitized by larval water mites. Furthermore, variations in sizes and shapes of the mites on the waterscorpion Ranatra linearis Linne, 1758 and Nepa cinerea Linne, 1758 were determined. These are the first records for larval mite parasitism on R. linearis and N. cinerea in Turkish Thrace.