Review of the genus Notanisus Walker, 1837 (Hymenoptera: Pteromalidae) in Iran

. The species of Notanisus Walker (Hymenoptera: Pteromalidae: Cleonyminae) from Iran were revised. Four Palaearctic species are recognized: N. clavatus Bouček, N. oulmesiensis (Delucchi), N. vanharteni Gibson and N. versicolor Walker; including one species with macropterous male and the rests with macropterous females. Of which, N. oulmesiensis and N. versicolor are new records for Iran. The species are briefly described based on available materials, illustrated through macrophotography, and their distributions in Iran was mapped.


Introduction
In the family Pteromalidae, the genus Notanisus Walker, 1837 was established with N. versicolor Walker in the subfamily Cleonyminae and tribe Cleonymini (Gibson, 2003).This genus includes 18 species in the World (Gibson, 2015;Noyes, 2019) with eight species in the Palaearctic region (Mitroiu & Andreiscu, 2008;Gibson, 2015).Only Notanisus vanharteni Gibson, 2015 was known from Iran prior to this study (Lotfalizadeh et al., 2017;Abolhasanzadeh et al., 2017).Bouček (1961) described Notanisus clavatus and compared it with N. versicolor.Mitroiu & Andreiscu (2008) analyzed the morphology of the male genitalia in N. sexramosus and N. versicolor and presented a key to species for determination of four species in Europe.Gibson (2015) designated the oulmesiensis species group of Notanisus.He revised this group and described five new species in this group from different regions, providing key to nine species.

Amoung
the recently collected specimens from different parts of Iran, we found two new records that are purpose of the present publication.

Material and methods
This study is based on material collected during 2012-2016 from different parts of Iran.Collected specimens were cardmounted following Noyes (1982).Prepared specimens were examined by a Leica M205C research stereomicroscope and Leica CLS 150X fiber optic light source.Generic identification was made using Graham (1969) and Bouček & Rasplus (1991) and species were identified using Bouček (1961), Mitroiu & Andreiscu (2008), Gibson (2015).All species were photographed with a Keyence VHX-5000 multiple-focus imaging system; and finally deposited in the HMIM (Hayk Mirzayans Insect Museum, Tehran, Iran).

Results
Iranian species of the genus Notanisus include four species that two of these species belong to the oulmesiensis species group.Notanisus oulmesiensis (Delucchi) and Notanisus versicolor Walker are new records for Iran.All of collected specimens were macropterous including three females and one male.Species are arranged alphabetically: Notanisus clavatus Bouček, 1961 (Fig. 1)
Remarks.This Mediterranean species distributed from Europe to Transcaucasus (Gibson, 2003;Mitroiu & Andreiscu, 2008).Gibson (2015) reported four male specimens of this species from Iran, which was identified by Z. Bouček in 1989 and deposited in the Canadian National Collection of Insects, Arachnids and Nematodes, Ottawa, Ontario, Canada (CNC).
Main morphological characters of this species are as follow: Head less transverse (Fig. 2C), width about 1.3 times of width of mesoscutum and in face and frontovertex extensively reddish-violaceous; pronotum posterolaterally and propodeum submedially with large, triangular, violaceous and smooth areas (Fig. 2E); fore wing (Fig. 2D) with infuscate region obviously interrupted by hyaline region behind marginal vein subbasally, postmarginal and stigmal veins equal and very short, marginal vein about 7 times of stigmal vein; propodeum (Fig. 2F) reticulate medially and smooth laterally, its median carina complete; petiole longer than broad; metacoxa yellowish to darkbrown dorsally but without metallic luster.Remarks.This species was described originally from Arabian Peninsula and based on recent report of Lotfalizadeh et al. (2017) occurs in the south of Iran.Gibson (2015) treated it in the oulmesiensis species group.
Males of N. versicolor with 5 lateral branches of antennal funicle (Fig. 4D) and longer petiole (longer than broad) (Fig. 4E) can be separated from N. sexramosus (Erdős), its closely related species.Mitroiu & Andreiscu (2008) believe that the males of N. versicolor appear to be much more common than the females that seems to be supported in our collection in Iran.

Discussion
Four Palaearctic species of Notanisus are present in Iran, N. oulmesiensis and N. versicolor being now reported for the first time.Therefore, Iranian species of the genus reaches four species, which further collections, especially in the south and east of Iran can increase number of species.Species of the genus Notanisus rarely found in Iran and based on our collections are mostly collected in the northwest and central parts of Iran (Fig. 5).
Mitroiu & Andreiscu (2008) reported most distribution of the genus Notanisus in the steppe areas, which our collected specimens were found in the steppe biotopes alongside of Zagros mountain chain in the west of Iran.

Figure 1 .
Figure 1.Notanisus clavatus: A. female in lateral view; B. Scale-like setae of fore wing; C. Female antenna; D. Head in frontal view; E. Fore wing; F. Mesosoma and first segment of metasoma in dorsal view.