This paper provides faunistic data for 27 species of Cryptinae in Iran, of which 12 species and three genera, Buathra Cameron, Myrmeleonostenus Uchida and Glyphicnemis Foerster, are newly recorded from Iran. Previously recorded species with related references are also included. Distributional map is given for all species of Cryptinae. This study increases the number of known species of Iranian Cryptinae to 55.

During the research initiated in 2002 on the bioecology of weedy spurge clear-wing moth Chamaesphecia schizoceriformis (Lep.: Sesiidae) in west parts of Urmia lake, specimens of an endoparasitoid wasp were collected from larvae of this moth. The specimens emerged from infested larvae in late June 2003, which had been collected from Nazlo district located at 12 Km at west of Urmia. Specimens were sent to Wuerzburg University (Germany) and identified as Phaen% bus saltans (Gravenhorst, 1829) (Hym.: Ichneumonidae). This species belong to the subfamily Acaentinae and occurs in the palearctic region. The body length of males varies from 10-11 mm and females from 12-13 mm. Alar expanse is 15.8-16.1 mm. Antennae 25-segmented, scapus and pedicel black, external edge and terminal segments of flagellum light brown. Wings color is dark brown, head and thorax are black. Midfemur and mid-tibia are orange in color. Trochanter and femur of hind legs are very large and orange color. The specimens of this species are maintained in the collection of Department of Entomology, Tarbiat Modarres University.

The subfamily Cryptinae is the largest subfamily within the Ichneumonidae and might be encountered in the majority of terrestrial habitats. The nomenclature of this group is complex, e.g. it has been referred as the Phygadeuontinae and Gelinae (Townes, 1969). Almost all Cryptinae have been described as idiobiont ectoparasitoids. The most common hosts of Cryptinae are endopterygote pupae or prepupae enclosed in cocoons or plant tissue. However, there are some endoparasitic species in the Hedycryptina, Phygadeuontina, and Stilpnina. Conversely, a few are koinobionts. Furthermore, some species parasitize the egg sacs of Pseudoscorpionida and Araneae, and many can develop as secondary parasitoids. This subfamily includes 379 genera worldwide (Goulet & Huber, 1993). Although there is a large amount of information known about the host relationships of some Cryptinae, little is known on their biology. Furthermore, because the subfamily is rather large, it is structurally very diverse (Gauld & Hanson, 1995).

The fauna of the subfamily Diplazontinae (Hymenoptera: Ichneumonidae) in the north central parts of Iran was studied during 2010-2011. A total of 933 specimens were collected in 30 localities at different altitudes using Malaise traps. Sixteen species belonging to 7 genera were identified of which twelve species, are new records for Iran: Diplazon annulatus (Gravenhorst)*, Diplazon laetatorius (Fabricius), D. pectoratorius (Gravenhorst)*, D. tibiatorius (Thunberg)*, Enizemum ornatum (Gravenhorst), Homotropus nigritarsus (Gravenhorst)*, Homotropus pictus (Gravenhorst)*, Promethes sulcator (Gravenhorst), Sussaba flavipes (Lucas)*, Sussaba pulchella (Holmgren)*, Syrphoctonus tarsatorius (Panzer)*, Syrphophilus bizonarius (Gravenhorst)*, Tymmophorus obscuripes (Holmgren)*, Woldstedtius biguttatus (Gravenhorst), Woldstedtius citropectoralis (Schmiedeknecht)* and Xestopelta gracilima (Schmiedeknekht)*. Detailed morphological characters and a key to the genera and species are provided. Flight periods and distribution in relation to altitude on two slopes of the Alborz mountains are discussed.