A new species of Monoblastus Hartig, 1837 (Hymenoptera: Ichneumonidae: Tryphoninae) from South Korea.

A new ichneumonid species, Monoblastus koreensis sp. nov. is described from South Korea. New data on the taxonomy and distribution of M. clauseni (Uchida), M. erythrurus Townes et al. and M. nigriventus Lee Cha are given. The taxonomic position of M. nigriventus and its similarity to M. ermolenkoi Kasparyan from Russian Kuril Islands is discussed. All these species are keyed and illustrated. Erromenus alpinator Aubert sensu Lee Cha (= Monoblastus koreensis sp. nov.) is excluded from the fauna of South Korea.

New records and descriptions of Ichneumonidae (Hymenoptera) from Mexico.

Based on a large quantity ichneumonid material collected mainly from the Mexican states of Veracruz and Quintana Roo, faunistic records of 79 species belonging to subfamilies Acaenitinae, Banchinae, Cryptinae, Cylloceriinae, Labeninae, Lycorininae, Microleptinae, Pimplinae, Tersilochinae, and Tryphoninae are provided. Three species are described as new to science: Latosculum ortegai Kasparyan Khalaim, sp. nov. (Cryptinae), Eusterinx madorae Khalaim Kasparyan, sp. nov. (Microleptinae) and Neotheronia veracruzana Khalaim, sp. nov. (Pimplinae). Two genera, Nipponaetes Uchida (Cryptinae) and Meggoleus Townes (Tersilochinae), and six species, Nipponaetes hansoni (Gauld) (Cryptinae), Lycorina moralesi Gauld (Lycorininae), Neotheronia murilloi Gauld (Pimplinae), Meggoleus pampahermosensis Alvarado (Tersilochinae), Phytodietus moragai Gauld, and Zagryphys zulaya Gauld (Tryphoninae), are first records from Mexico. Females of three species, Cestrus tenuiventris (Cresson), Mallochia macula Kasparyan Ruíz-Cancino (Cryptinae), and Phytodietus moragai Gauld (Tryphoninae), are recorded and described for the first time.