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The tachinid flies (Diptera) and their host species have been studied in the corn and sugar beet fields of Kermanshah and Hamedan provinces from 2022 to 2023. The infested plants by caterpillars were collected in order to rear the larvae at the laboratory. In this study, six species of parasitoids were identified of which Drino imberbis (Wiedemann, 1830), Linnaemya neavei Curran, 1934 and Pseudogonia rufifrons (Wiedemann, 1830) parasitize the larval stages of Leucania loreyi (Duponchel, 1827) in corn fields. The species D. imberbis is newly reported here as a parasitoid of L. loreyi in Iran. The tachinid Voria ruralis (Fallén, 1810) is the first world recorded parasitoid of larval stages of Sesamia cretica Lederer, 1857. Furthermore, Periscepsia carbonaria (Panzer, 1797) and an undetermined Tachina sp. were discovered to parasitize the larvae of Agrotis segetum (Denis & Schiffermüller, 1775) and Spodoptera exigua (Hübner, [1808]), respectively, in sugar beet fields.

During the monitoring of some corn fields in the Orzuiye region, Kerman Province, in October 2023, several moths’ larvae were observed while feeding on leaves, spikes and seeds of the host plant. The collected larvae were reared under laboratory conditions until emerging the adults. After examining the reared specimens and the collected adult moths, they were identified as Spodoptera frugiperda (J. E. Smith) which is known as fall armyworm. This species which was previously being considered as an external quarantine pest in Iran, is being reported from the country for the first time.

We record three Tischeriidae species new for Iran: Coptotriche gaunacella (Duponchel, 1843) from Tehran and Mazandaran provinces, Tischeria dodonaea Stainton, 1858 from East Azarbaijan province and T. caucasica Klasiński & Stonis, 2020, previously only known from Georgia. The larvae of T. caucasica were observed mining the leaves of planted trees of Quercus infectoria G. Olivier, Q. robur Linnaeus and Q. libani G. Olivier in Peykan Shahr, Tehran province; and on native trees of Q. castaneifolia C.A.Mey. and Q. macranthera Fisch. & C.A.Mey. ex Hohen. in East Azarbaijan, Gilan and Mazandaran provinces. This species was very abundant on planted oaks in Peykan Shahr, Tehran and the infestation increased progressively in the second generation of the moth in November and December. Tischeria caucasica is very similar to European T. ekebladella (Bjerkander, 1795) in external appearance and biology, both sharing the same DNA barcode. The only diagnostic character, in the male genitalia, are the spiny appendages of the juxta. We provide a brief diagnosis and describe the larvae, leafmines and pupae for the first time. We discuss whether the observed difference in the male genitalia supports separate specific status, or is the result of clinal variation of a single species.

Teleiopsis diffinis (Haworth) was identified based on a single male specimen collected in Khakak, Mazandaran Province, deposited in the Hayk Mirzayans Insect Museum, Iranian Research Institute of Plant Protection. The genus Teleiopsis Sattler and T. diffinis are newly reported for the fauna of Iran. Taxonomic characterization of the species is provided and the examined adult male and its genitalia are illustrated.

Sitochroa urmiensis sp. nov. is described based on a single male collected in West Azarbaijan Province, Iran. Sitochroa palealis (Denis & Schiffermüller, 1775) is considered as a senior synonym of Loxostege farsalis Amsel, 1950 syn. nov. Loxostege malekalis Amsel, 1950 is transferred to the genus Sitochroa Hübner, as S. malekalis (Amsel, 1950) comb. nov. And the hitherto unknown female of S. malekalis is described and illustrated.

The genus Ratasa Herrich-Schäffer, 1849 and R. alienalis (Eversmann, 1844) are identified based on a single male specimen collected in Golestan National Park, Sulgerd region and preserved in the Hayk Mirzayans Insect Museum. Both genus and species are newly reported for the fauna of Iran. Taxonomic characterization of the species as well as the adult male and male genitalia figures are presented herein.

The genus Eidophasia Stephens, 1840 and E. messingiella (Fischer von Röslerstamm, 1840) are newly reported for the fauna of Iran. They were identified based on three and one specimens collected in Kordestan and Tehran Provinces, respectively. Taxonomic characterization of the species, as well as figures of the adult female, collecting data map, and both male and female genitalia are briefly described and illustrated.

Stathmopoda ficivora Kasy was identified based on a female specimen collected in the late of June 2013 in Dorbadam protected area, N. Ghuchan, Khorasan-e Razavi Province. This species is newly reported for the fauna of Iran. A brief taxonomic characterization of the species is provided and the examined adult female and its genitalia are figured.

Three Phyllonorycter species namely, Ph. coryli (Nicelli, 1851), Ph. millierella (Staudinger, 1871) and Ph. roboris (Zeller, 1839) are newly reported for the fauna of Iran. These species are collected in Azarbaijan-e Sharghi, Tehran and Kordestan provinces, respectively. The first two species were collected as larvae while feeding on Carpinus betulus L. (Betulaceae) and Celtis australis L. (Cannabaceae), in the order, and the last one collected as adult in an Oak forest using light trap. The genus Carpinus L. and C. betulus are newly reported as larval host plant for Ph. coryli. Brief taxonomic characterizations of these species are provided and an updated list of the Phyllonorycter species occurring in Iran is presented.

A complete description of Acteniopsis gambronensis sp. n. is given based on three males and three females collected in the south of Iran, Hormozgan Province. The female of A. kurdistanella Amsel, 1959 is redescribed and illustrated and new distributional data for this species is also provided. Acteniopsis robustus Asselberges, 2010 is transferred to the genus Stemmatophora Guenée, 1854, S. robustus (Asselbergs, 2010), comb. n. A taxonomic review of the genus Acteniopsis is presented. Introduction The genus Acteniopsis Amsel, 1959 was erected to accommodate the type species A. kurdistanella Amsel, 1959. Acteniopsis belongs to the subfamily Pyralinae along with more than 1100 species in 134 genera. This subfamily is more diverse in Asia and Africa than in the western hemisphere (Munroe and Solis 1999; Nuss et al. 2003–2017). There is no obvious synapomorphic character for this subfamily (Solis and Shaffer 1999). Prior to the current study, Acteniopsis included only two species, A. kurdistanella and A. robustus Asselbergs, 2010 which had been described from Iraq and United Arab Emirates, respectively. The former species is also reported from Iran by Amsel (1961). According to Amsel (1959), this genus is generally close to Actenia Guenée, 1854 (presently known as Stemmatophora Guenée, 1854), although has very small and hardly recognizable maxillary palpi, and different, much shorter, and more broadly scaled labial palpi. The wing venation of these two genera is more or less similar accordingly; however in the hindwing of Acteniopsis the veins M2 and M3 originate from the same point, while in Stemmatophora they are on a short stalk. Also, in the forewing of Stemmatophora vein R5 is more or less on a long stalk at R3+R4, while in Acteniopsis R3+R4+R5 arising from a common point, and sometimes in female, R3+R4 has a short stalk with R5. Their antennae are differently ciliated ventrally: Stemmatophora has two rows of stout brushes of ciliae ending in numerous split hairs, while in Acteniopsis the ciliae are very tender, distally split in few fine hairs (Amsel 1959). During the study of Pyralinae of Iran, an unknown Acteniopsis species was found in the Lepidoptera collection of the Hayk Mirzayans Insect Museum (HMIM), Iranian Research Institute of Plant Protection (IRIPP). The aim of the present study is to describe this new Acteniopsis species which has been collected in Hormozgan Province in 1986. We also redescribe the female of A. kurdistanella based on the Iranian specimens collected in Chaharmahal va Bakhtiari, Fars, Hamedan and Kermanshah Provinces. Furthermore, the genus Acteniopsis is here revised.

Bucculatrix albella Stainton is newly reported for the fauna of Iran. The species is collected in Khorasan-e Jonubi and Zanjan Provinces as larvae and cocoon, and adult, respectively. In the former Province it was found on red date, Ziziphus jujuba Miller (Rosales: Rhamnaceae) in some orchards of Birjand during 2015-2016. This species may be considered as a severe pest of jujube in Iran in the future.

The larvae of Strophedra weirana (Douglas, 1850) were discovered in Shast Kola forest (Golestan Province) and few adult specimens were collected in Rasht (Gilan Province) and Ramsar (Mazandaran Province). In Golestan Province, the caterpillars had attached two leaves of the host plant, Fagus orientalis Lipsky, with their silk and were feeding within this shelter. The genus Strophedra and S. weirana are new reports for the fauna of Iran. A brief taxonomic characterization of the species, as well as figures of the adults and male and female genitalia are provided.

The phylogeny of the hydrophilid genus Sternolophus Solier, 1834 was examined in this study using 60 morphological adult characters, eight of them continuous and 52 discrete. The cladistic analysis resulted in a single most parsimonious tree with two major subclades corresponding, respectively, to species previously assigned to the subgenera Sternolophus s. str. Solier and Neosternolophus Zaitzev, although they are not re-instated. The species groups S. angolensis (Erichson, 1843) and S. solieri Castelnau, 1840 are recovered as monophyletic. The biogeography and diversification of the species of Sternolophus are briefly discussed.

An examination of the entire Schoenobinae material preserved in the Hayk Mirzayans Insect Museum (HMIM) of the Iranian Research Institute of Plant Protection (IRIPP) revealed the presence of 19 males and 18 females of Scirpophaga tongyaii Lewvanich collected in Kerman Province. This species is newly reported for the fauna of Iran. Brief description of the species as well as the figures of the adults and both male and female genitalia are presented.

Acleris kochiella (Goeze) collected in Gilan and Golestan Provinces and preserved in the Hayk Mirzayans Insect Museum (HMIM) of the Iranian Research Institute of Plant Protection (IRIPP) was identified during the study of Tortricidae material of the Lepidoptera collection. This species is newly reported for the fauna of Iran. A brief diagnosis of the species is provided.

The cotton leaf roller moth, Haritalodes derogata (Fabricius, 1775) (Lepidoptera: Crambidae) was collected on two kinds of flowering shrubs, Hibiscus syriacus L. and Hibiscus mutabilis L., in Rasht, Guilan Province, during August 2013. This species represents a generic new record for the fauna of Iran. A brief description of the species is provided to facilitate the identification.