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The list of forty one subgenera of the genus Andrena from Iran is given. The list provided here is based on a detailed study of all available published data. Four subgenera and five species are recorded for the first time from Iran, including Andrena (Cnemidandrena) fuscipes (Kirby, 1802), Andrena (Lepidandrena) curvungula (Thomson, 1870), Andrena (Lepidandrena) pandellei (Pérez, 1895), Andrena (Parandrena) sericata (Imhoff, 1868) and Andrena (Platygalandrena) tecta (Radoszkowski, 1876). Ecological notes on the newly recorded species are briefly discussed.

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A field survey of the bee fauna was conducted in the north of Iran during 2009 to 2015. Special concern was given to the tribe Ceratinini (Hymenoptera; Apidae). Ten species of the genus Ceratina were collected and identified in the present study. Three species are recorded for the first time from Iran, including Ceratina (Euceratina) chrysomalla Gerstaecker 1869, Ceratina (Euceratina) cyanea (Kirby, 1802) and Ceratina (Euceratina) gravidula Gerstaecker, 1869. An updated checklist of Iranian Ceratinini with short description and figures of newly recorded species are provided. The host plants and distribution of each species are also given.

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Collecting data of the family Halictidae are reported in Gorgan county, Golestan province, northern Iran. We collected 30 species belonging to 5 genera in 3 subfamilies. Among them, Lasioglossum (Hemihalictus) croceipes (Morawitz, 1876) and Halictus (Seladonia) confusus Smith, 1853 are recorded from Iran for the first time and 18 species are new for Gorgan county. Among 112 collected specimen, the subfamily Halictinae (27 species), genus Lasioglossum (14 species) and subgenus Lasioglossum (5 species), representing the major groups of halictid bee and Halictus (Halictus) brunnescens (Eversmann, 1852) was the most abundant species in the study areas. Knapweed flowers (Centaura spp.) had higher halictid bee taxa richness. An updated checklist of halictid bees of Gorgan county is provided.

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A survey on the megachilid bees (Hymenoptera: Megachilidae) fauna of northern Iran, between 2010 and 2011, led to the identification of eleven species of the genus Coelioxys Latreille belonging to subgenera Allocoelioxys (6 species), Boreocoelioxys (2 species), Coelioxys (2 species) and Liothyrapis (1 species). Of these, six species and one subgenus (Liothyrapis) are new to the fauna of Iran. Detailed illustrations of morphological characters, a key to the species of the genus Coelioxys and an updated checklist of Iranian species of Coelioxys are provided.

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We present the results of a survey on the sawfly fauna of Anguran Protected Area, Dandi, Mahneshan County, Zanjan Province, Iran. Surveys in 2018 with nets recorded 4 sawfly species in three genera: Macrophya diversipes (Schrank, 1782); Macrophya nr. ribis (Schrank, 1781); Tenthredo cinctipleuris (Enslin, 1910) and Dolerus murcius Konow, 1895. The last mentioned species is a new record for the Iranian fauna.

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A survey on sawflies (Hymenoptera: Symphyta) fauna of Gorgan County, northern Iran, during 2015-2017, led to the identification of sixteen species. Six species including Arge cingulata (Jakowlew, 1891); Calameuta pallipes (Klug, 1803); Phylloecus xanthostoma (Eversmann, 1847); Allantus cingulatus (Scopoli, 1763); Ametastegia pallipes (Spinola, 1808) and Nematus lucidus (Panzer, 1801) are recorded for Golestan fauna for the first time and C. pallipes is a new record for the Iranian fauna.

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During a comprehensive survey of the heterostigmatic mites associated with dung beetles in the hyrcanian forests, northern Iran, several colonies of the pygmephoroid mites including four species of the genus Spatulaphorus Rack, 1993, S. copridis Khaustov, 2007, S. gorganica Rahiminejad & Hajiqanbar, 2011, S. vladimiri Khaustov, 2005 and S. geotruporum Khaustov, 2005 phoretic on Geotrupes spiniger (Marsham, 1802) were found. This is the first record of S. geotruporum from Asia. Furthermore, this is the first record of phoresy of S. geotruporum on G. spiniger.

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The red flour beetle, Tribolium castaneum (Herbst), is one of the most destructive pests attacking stored grain products all over the world. Serious problems assossiated with using synthetic chemical insecticides have strongly demonstrated the need for applying alternative safe compounds such as plant essential oils. The present experiment was conducted to evaluate fumigant toxicity of essential oils from the fresh fruit peel of two Citrus species namely, Citrus sinensis (L.) Osbeck and Citrus paradisi (Macfarlane) against 1 to 7-days-old adults of T. castaneum under laboratoryconditions. Moreover, oviposition deterrence activity of sublethal concentrations of the oils were assessed on the female beetles. All experiments were carried out at 27 ± 1 °C and65 ± 5% r. h. in darkness. Findings indicated the high fumigant toxicity of both essential oils. According to probit analysis, there was no significant differences between C. sinensis (LC₅₀ = 7.27 µl.l^-1 air) and C. paradisi (LC₅₀ = 7.70 µl.l^-1 air) essentialoils. Also, oviposition deterrence activity of the essential oils was significantly increased as concentrations of the oils were increased from 500 to 2500 ppm. In general, the results of our study demonstrated the high efficacy of C. sinensis and C. paradisi oils against T. castaneum.
 

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Following a short-term faunistic study on soil inhabiting heterostigmatic mites (Acari: Prostigmata: Heterostigmata), during spring-winter 2019, in Gorgan, Golestan Province, northern Iran, a total of six species from five genera of two families were identified. Among them Promicrodispus pumilis (Sevastianov, 1975) and Premicrodispus montanus Khaustov, 2006 are new records for mite fauna of Iran. The genus Promicrodispus Khaustov, 2017 is recorded for the first time for the mite fauna of Iran. Moreover, Pre. akermanae (Sevastianov & Al Douri, 1988), Paramicrodispus scarabidophilus Hajiqanbar & Rahiminejad, 2012, Pygmodispus (Allodispus) latisternus Paoli, 1911 and Scutacarus sphaeroideus Karafiati, 1959 were collected from soil in the sampling sites. The world distribution of the mites is reviewed.

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A checklist of the bees of the genus Hylaeus Fabricius, 1793 of Iran, based on the literature data and also field surveys in northeastern Iran (North Khorasan and Khorasan-e Razavi provinces) is presented. The resulting checklist comprises nine subgenera and 63 species. Four species of the genus Hylaeus, including H. (Lambdopsis) rinki (Gorski, 1852), H. (Spatulariella) hyalinatus Smith, 1842, H. (Spatulariella) punctatus (Brullé, 1832) and H. (Prosopis) lionotus (Alfken, 1909), are newly recorded for the fauna of Iran. The later species is considered as ″ very rare″ , has only known in Kazakhstan. A re-description of the male of H. (Prosopis) lionotus together with the illustrations of morphological characters is given.

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Abstract: Car-Following models are integral parts of capacity analysis, safety research, traffic simulation, and developing advanced vehicle control systems. During the past six decades, various car following models have been developed. GHR is the most well-known stimulus based model, in which the stimulus is the relative velocity of vehicles. In this research, timeto- collision (TTC), as the stimulus, is proposed as a substitute for relative velocity in the GHR model. GHR model is calibrated based on the comprehensive and detailed data gathered in the NGSIM project on I-80 freeway. The Results of GHR model calibration based on the data obtained for the two stimuli indicated that coefficient of determination (R2) increased from 0.233 in the base model to 0.638 in the proposed model. In all, the results indicated that the application of TTC as the stimulus in the GHR model would improve the model's outcome.

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The purpose of this study was to investigate the effect of different methods of preparation of raw rainbow trout (Oncorhynchus mykis) (full, empty stomach, fillets and fillets of butterflies) on quality and shelf life was over 4 months of storage in home freezers. To this end, rainbow trout  transferred to the laboratory and washed, were prepared by the method described and qualitative assessment of fish at the end of each month by measurement of chemical parameters (free fatty acids, thiobarbituric acid, protein, fat, moisture, ash, under pressure moisture, pH, heme iron content) and sensory (flavour, odor, texture, color) were performed. With increasing storage time heme iron content reduced, so that at the end of storage heme iron content was more in treatment of whole fish. Also under pressure moisture, TBA nad FFA increased in different treatments and in the fourth month of storage, the rate of these variables were lower in treatments of whole fish. Sensory analysis results indicate utility of all treatments decreased with increasing storage time but the rate of decline was less than in whole fish. According to the results, as can be fish kept in perfect shape than in other forms it is recommended.

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Bakery products, like many processed foods, are subjected to the physical, chemical and microbiological spoilage. Mold growth is a problem that limits the shelf life of high and intermediate- moisture bakery products .Water activity is a physical property that has a direct implication for microbiological safety of food. Foods with lower water activities are quite shelf life since they contain small a mount of water available for microorganisms to use for growth. In this research, effects of polyols (Glycerin, Sorbitol, Propylene glycol), invert and glucose syrup on the quality of batter and cake were evaluated. Polyols, invert and glucose syrup at five levels (1, 2, 3, 4 and 5%) were considered as variable treatments. The results showed that, cakes containing with propylene glycol had higher specific volume of batter, less height of cake and higher moisture of cake (P<0.05). Propylene glycol and glycerol were significant different in decreasing water activity other than sorbitol, invert and glucose syrup (P<0.05). Cakes containing propylene glycol and glycerol were more than sorbitol shelf life, invert and glucose syrup. Samples of cakes containing invert had the lowest pH (P<0.05). Thus, the polyols can be used to increase the quality and shelf life of cake.