Received: 26 November 2017, Accepted: 12 February 2018 Subject Editor: Shahab Manzari Journal of Entomological Society of Iran 2018, 37(4), 441460 ﻧﺎﻣﻪ اﻧﺠﻤﻦ ﺣﺸﺮه ﺷﻨﺎﺳﯽ اﯾﺮان460 - 441 ), 4 ( 37 , 1396 Doi: 10.22117/jesi.2018.116455.1163 Study of three genera of the Orthocentrus genus-group (Hymenoptera: Ichneumonidae, Orthocentrinae) in northern Iran Abbas Mohammadi-Khoramabadi 1 & 2 , Ali Asghar Talebi 1 & * 1- Department of Entomology, Faculty of Agriculture, Tarbiat Modares University, P.O.Box: 14115- 336, Tehran, Iran, 2- Department of Plant Production, College of Agriculture and Natural Resources of Darab, Shiraz University, Darab, Iran. *Corresponding author, E-mail: talebia@modares.ac.ir Abstract The subfamily Orthocentrinae comprises a diverse group of ichneumonid parasitoid wasps. The species of three genera of the Orthocentrus genus-group (Hymenoptera: Ichneumonidae, Orthocentrinae) was studied in northern Iran: Batakomacrus Kolarov, Plectiscus Gravenhorst and Stenomacrus Förster. A total of 847 specimens of these genera were collected from Alborz, Tehran, Qazvin, Gilan and Mazandaran provinces using Malaise traps during 2010-2011. Nine species including Batakomacrus caudatus (Holmgren, 1858), Plectiscus agilis (Holmgren, 1858), P. minutus (Holmgren, 1858), Stenomacrus carbonariae Roman, 1939, S. curvicaudatus (Brischke, 1871), S. deletus (Thomson, 1897), S. exserens (Thomson, 1898), S. merula (Gravenhorst, 1829) and S. minutissimus (Zetterstedt, 1838) are recorded for the first time from Iran. Their phenology, seasonal abundance, adult emergence period, distribution and altitudinal changes on two northern and southern slopes of the Alborz Mountains of Iran are provided. Our data showed that the Caspian Hyrcanian forests at the northern slope of the Alborz Mountains inhabit a more diverse and higher abundant community of Orthocentrus genus-group than the southern one. Key words: Hyrcanian forests, distribution, parasitoid, taxonomy, new record. ﻣﻄﺎﻟﻌﻪ ﺳﻪ ﺟﻨﺲ از ﮔﺮو ه ﺟﻨﺲOrthocentrus (Hymenoptera: Ichneumonidae, Orthocentrinae) در ﺷﻤﺎل اﯾﺮان ﻋﺒﺎس ﻣﺤﻤﺪي ﺧﺮم آﺑﺎدي 1 و2 و ﻋﻠﯽ اﺻﻐﺮ ﻃﺎﻟﺒﯽ 1 و * 1 - ﮔﺮوه ﺣﺸﺮه ﺷﻨﺎﺳﯽ، داﻧﺸﮑﺪه ﮐﺸﺎورزي، داﻧﺸﮕﺎه ﺗﺮﺑﯿﺖ ﻣﺪرس، ﺻﻨﺪوق ﭘﺴﺘﯽ336 - 14115 ، ﺗﻬﺮان ، اﯾﺮان،2 - ﮔﺮوه ﺗﻮﻟﯿﺪات ﮔﯿﺎﻫﯽ، داﻧﺸﮑﺪه ﮐﺸﺎور زي و ﻣﻨﺎﺑﻊ ﻃﺒﯿﻌﯽ داراب، داﻧﺸﮕﺎه ﺷﯿﺮاز، داراب، اﯾﺮان. * ﻣﺴﺌﻮل ﻣﮑﺎﺗﺒﺎت، ﭘﺴﺖ اﻟﮑﺘﺮوﻧﯿﮑﯽ:talebia@modares.ac.ir ﭼﮑﯿﺪه زﯾﺮ ﺧﺎﻧﻮادهOrthocentrinae درﺑﺮﮔﯿﺮﻧﺪه ﮔﺮوه ﻣﺘﻨﻮﻋﯽ از زﻧﺒﻮرﻫﺎي ﭘﺎرازﯾﺘﻮﺋﯿﺪ اﯾﮑﻨﺌﻮﻣﻮﻧﯿﺪ ﻣﯽ ﺑﺎﺷﺪ. ﮔﻮﻧﻪ ﻫﺎي ﺳﻪ ﺟﻨﺲ از ﮔﺮوه ﺟﻨﺲOrthocentrus (Hymenoptera: Ichneumonidae, Orthocentrinae) ﺷﺎﻣ ﻞBatakomacrus Kolarov ، Plectiscus Gravenhorst وStenomacrus Forster در ﺷﻤﺎل اﯾﺮان ﻣﻮرد ﻣﻄﺎﻟﻌﻪ ﻗﺮار ﮔﺮﻓﺖ. در ﻣﺠﻤﻮع 855 ﻓﺮد از ﺳﻪ ﺟﻨﺲ ﻣﺬﮐﻮر از اﺳﺘﺎن ﻫﺎي اﻟﺒﺮز، ﺗﻬﺮان، ﻗﺰوﯾﻦ، ﮔﯿﻼن و ﻣﺎزﻧﺪران ﺑﺎ اﺳﺘﻔﺎده از ﺗﻠﻪ ﻣﺎﻟﯿﺰ در ﺳﺎل ﻫﺎي1388 و1389 ﺟﻤﻊ آوري ﮔﺮدﯾﺪ.9 ﮔﻮﻧﻪ ﺷﺎﻣﻞBatakomacrus caudatus (Holmgren, 1858) ، Plectiscus agilis (Holmgren, 1858) ، P.minutus (Holmgren, 1858) ، S.carbonariae Roman, 1939 ، S. curvicaudatus (Brischke, 1871) ، S. deletus (Thomson, 1897) ، S. exserens (Thomson, 1898) ، S. merula (Gravenhorst, 1829) وS. minutissimus (Zetterstedt, 1838) ﺑﺮاي اوﻟﯿﻦ ﺑﺎر از اﯾﺮان ﮔﺰارش ﻣﯽ ﺷﻮﻧﺪ. ﻓﻨﻮﻟﻮژي اﯾﻦ ﮔﻮﻧﻪ ﻫﺎ، ﻓﺮاواﻧﯽ ﻓﺼﻠﯽ، دوره ﻇﻬﻮر اﻓﺮاد ﺑﺎﻟﻎ، ﭘﺮاﮐﻨﺶ و ﺗﻐﯿﯿﺮات ارﺗﻔﺎﻋﯽ آن در دو ﺷﯿﺐ ﺷﻤﺎﻟﯽ و ﺟﻨﻮﺑﯽ رﺷﺘﻪ ﮐﻮه ﻫﺎي اﻟﺒﺮز ﻓﺮاﻫﻢ ﮔﺮدﯾﺪ. داده ﻫﺎي اﯾﻦ ﻣﻄﺎﻟﻌﻪ ﻧﺸﺎن ﻣﯽ دﻫﻨﺪ ﮐﻪ ﺟﻨﮕﻞ ﻫﯿﺮﮐﺎﻧﯽ واﻗﻊ در ﺷﯿﺐ ﻫﺎي ﺷﻤﺎﻟﯽ رﺷﺘﻪ ﮐﻮه ﻫﺎي اﻟﺒﺮز از ﺗﻨﻮع ﮔﻮﻧﻪ اي ﺑﺎﻻﺗﺮ و ﻓﺮاواﻧﯽ ﺑﯿﺸﺘﺮ ﮔﻮﻧﻪ ﻫﺎي ﮔﺮوه ﺟﻨﺲOrthocentrus ﻧﺴﺒﺖ ﺑﻪ ﺷﯿﺐ ﻫﺎي ﺟﻨﻮﺑﯽ ﺑﺮﺧﻮردار اﺳﺖ. واژه ﻫﺎي ﮐﻠﯿﺪي: ﺟﻨﮕﻞ ﻫﺎي ﻫﯿﺮﮐﺎﻧﯽ، ﭘﺮاﮐﻨﺶ، ﭘﺎرازﯾﺘﻮ ﺋﯿﺪ، ﺗﺎﮐﺴﻮﻧﻮﻣﯽ، ﮔﺰارش ﺟﺪﯾﺪ. درﯾﺎﻓﺖ:5 / 9 / 96 ، ﭘﺬﯾﺮش:23 / 11 / 96 .