Deronectes taron sp. n. from the eastern Anatolian region of Turkey (Coleoptera, Dytiscidae, Hydroporinae).

Deronectes taron sp. n. from the Mus province in the eastern Anatolian region of Turkey is described and illustrated in detail. The species belongs to the D. longipes subgroup of the D. parvicollis species group and resembles in particular D. syriacus Wewalka, 1971. It can be differentiated from this and the other species of the group by the shape of the median lobe which is strongly bent in lateral view. A part of the key to species of the subgroup is updated. Together with the new species the number of the known species of the genus Deronectes Sharp, 1882 is now 59 and that of the longipes-subgroup is 13.

First record of larvae of the water mite Hydrachna processifera Piersig, 1895 from Turkey (Acari, Hydrachnidia, Hydrachnidae).

Larvae of water mite Hydrachna processifera Piersig, 1895 (Acari, Hydrachnidiae) were reported on diving beetles Dytiscus marginalis Linnaeus, 1758 (Coleoptera, Dytiscidae) from Turkey. The redescription of the larva was made. Earlier, the larva H. processifera was described as H. inermis, but it was subsequently synonymized with H. processifera. The larva of H. processifera is a new record for the Turkish fauna. All larvae of H. processifera were found on the mesosternum of the one specimens (prevalence = 16.7%).

House Dust Mites in Erzincan Province.

OBJECTIVE: We aimed to determine the species of the house dust mites seen in Erzincan, the number of mites per gram of dust in the houses, and the relationship between temperature and the number of mite specimens. METHODS: For this purpose, 54 dust samples collected from 18 houses located in different districts of Erzincan province between November 2013 and January 2014. These samples were examined by a lactic acid precipitation method. RESULTS: Of the houses in which the dust samples were collected, 94.44% were found to be positive in terms of mites. A total of 844 mite specimens were isolated from the dust samples, and the mean number of mites per gram of dust was found to be 18.34. The most common species was found to be Acarus siro (55.55%) and was followed by Dermatophagoides pteronyssinus (50.00%), Tyrophagus putrescentiae (22.22%), Histiostoma sp. (22.22%), Lepidoglyphus destructor (16.66%), T. perniciosus(11.11%), Euroglyphus maynei (11.11%), Glycyphagus privatus (11.11%), Cheyletus sp. (11.11%), Tarsonemus sp. (11.11%), and Tetranychus sp. (11.11%). CONCLUSION: Mite-holding rate of the houses in Erzincan province was found to be 94.44%. The mean number of mites per gram of dust was found to be 18.34. The most common mite species was A. siro, which was followed by D. pteronyssinus.

Seasonal changes of house dust mite population in Bitlis and Mus provinces of Turkey.

OBJECTIVE: This study was conducted to determine the dust mite fauna of houses in Bitlis and Mus provinces, the monthly value of mite numbers/g dust, as well as the impact of temperature, humidity and altitude on their numbers. METHODS: Dust samples were collected monthly from May 2010 to April 2011 from six houses belonging to three settlements; two of the houses were located in Bitlis, while another four were in Mus province. RESULTS: All 72 examined dust samples were found to be positive with regard to mites. The number of mites found in 1 g dust varied from 25 to 2,740. Overall, 1,167 house dust mites belonging to the orders Astigmata, Mesostigmata and Prostigmata were isolated. Dermatophagoides pteronyssinus was the predominant mite (83.2%), followed by Lepidoglyphus destructor (6.3%), Acarus siro (2.7%) and Tyrophagus putrescentiae (1.9%). The mite numbers were higher in the warmer months of the year. CONCLUSION: The dominant mite in the Bitlis and Mus provinces is Dermatophagoides pteronyssinus, and the highest mite numbers were found in months in which the outside humidity was low.

[Distribution of house dust mites in Hasköy town, Mus]. / Mus'un Hasköy ilçesinde ev tozu akarlarinin yayilisi.

OBJECTIVE: This study was carried out to determine the distribution of house dust mites and the role of the mites on allergic diseases in Haskoy town, Mus. METHODS: In the study, dust samples were collected from 50 houses in May and July months of 2002 year. RESULTS: Twenty eight (56%) of 50 mites samples examined in May and 20 (40%) of 50 mites samples examined in July were found positive. Dermatophagoides pteronyssinus was found to be the predominant species with 36.34% in May and 34.21%in July. Lepidoglyphus destructor, Cheyletus spp, Acarus spp, Acarus farris, Acotyledon tjidobas, Blomia tjidobas, Rhizoglyphus robini and Chartoglyphus arcuatus had 18.18%, 6.81%, 4.54%, 4.54%, 4.54%, 2.27%, 2.27% and 2.27% percentages in May respectively. On the other hand, L. destructor, Cheyletus spp, Acarus spp, Acarus farris, Allocalvolia habrocytes, A. tjidobas and R. robini had 18.42%, 10.52%, 7.89%, 2.63%, 5.26%, 5.26% and 5.26% in July respectively. CONCLUSION: Positivity rates of the mites collected from houses of people with allergic disorders was 55.5% while this rate was 56.25% for houses of those without allergic disorders. No statistical relationship was found between encounter with the mites and the patients with allergy. In addition, the number of adobes detected dust mites was higher than the other types of houses.