A new species of Lathrolestes (Hymenoptera,Ichneumonidae) from Ecuadorian Amazonia,with?a?key?to the Neotropical species of the genus

Here we describe and illustrate a new parasitoid wasp species, Lathrolestes gauldi sp. n. from the lowland rainforest of eastern Ecuador and provide a key to the Neotropical species of the genus. This is the first record of the subfamily Ctenopelmatinae from Ecuador.     

Species of the genus Mastrus Förster (Hymenoptera, Ichneumonidae) of China with descriptions of two new species parasitizing sawflies (Hymenoptera)

Four species of Mastrus Förster, 1869 are reported from China. Two, Mastrus nigrus Sheng & Zeng, sp. n. reared from Arge pullata (Zaddach) and Mastrus rugotergalis Sheng & Zeng, sp. n. reared from Diprion jingyuanensis Xiao & Zhang, are new to science. One, Mastrus deminuens (Hartig, 1838), is a parasitoid of Pachynematus itoi Okutani. A key to species of Mastrus Förster known in China is provided.     

A review of the palaearctic species of the genus <Emphasis Type="Italic">Hadrodactylus</Emphasis> Förster (Hymenoptera,Ichneumonidae, Ctenopelmatinae) with a description of five new species

30 Palaearctic species of Hadrodactylus are considered. 2 species-group with 6 subgroups are distinguished. 5 new species from the Eastern Palaearctic Region are described: Hadrodactylus arkit sp. n. (Kyrgyzstan), H. caucasicus sp. n. (Caucasus), H. nitidus sp. n., H. sibiricus sp. n., and H. taigensis sp. n. (Eastern Siberia and Far East of Russia). A new combination and a new synonymy Xenoschesis incarnator Aubert, 1985 (recte Hadrodactylus, comb. n.) = Hadrodactylus fugax almator Aubert, 1996, syn. n. are established. An annotated list of species is given with data on the distribution in Russia and adjacent territories. A key to 30 Palaearctic species is given.     

A new species of the genus Himertosoma from the Ryukyus,Japan, with a key to species from the Palaearctic and Oriental Regions (Hymenoptera,?Ichneumonidae,Banchinae)

A new species of the genus Himertosoma Schmiedeknecht, Himertosoma kuslitzkii sp. n., was discovered in Amamioshima Island, the Ryukyus. This new species resembles two Oriental species, Himertosoma philippense Chandra & Gupta and Himertosoma townesi Chandra & Gupta, in the colour pattern of the head and metasoma, number of flagellomeres, and the relatively slender first metasomal tergite, but can easily be distinguished from them by the nearly evenly punctate propodeum, different length/width ratio of the first metasomal tergite, different length of the ovipositor sheath, tricoloured mesosoma, and the whitish band along the posterior margin of the second and following metasomal tergites. A key to the Palaearctic and Oriental species of Himertosoma is also provided.     

A new species of Megischus Brullé (Hymenoptera, Stephanidae) from China, with a key to the Chinese species

A new species of Megischus Brullé from China, Megischus aplicatussp. n.,is described and illustrated. A key to the Chinese species of Megischus is added. The holotype is deposited in the Parasitic Hymenoptera Collection of Zhejiang University, Hangzhou.     

A new species of the genus <Emphasis Type="Italic">Coccophagus</Emphasis> Westwood (Hymenoptera,Chalcidoidea, Aphelinidae) inhabiting ants’ nests (Hymenoptera,Formicidae) in Malaysia

Coccophagus brachypterus sp. n. is described from Malaysia. The new species differs from the closely related C. silvestrii Compere in the black hind femur and blackish largest part of hind tibia. The new species is also characterized by shortened fore wings with the apices not reaching the abdominal apex.     

Two new species of genus Ateleute Förster (Hymenoptera, Ichneumonidae, Cryptinae) with a key to the Oriental species

Three species of Ateleute Förster 1869 belonging to the tribe Cryptini of the subfamily Cryptinae (Hymenoptera, Ichneumonidae), collected from Jiangxi Province, China, are reported, of which two are new for science: Ateleute ferruginea Sheng, Broad & Sun, sp. n. and AAteleute zixiensis Sheng, Broad & Sun, sp. n. One, AAteleute densistriata (Uchida, 1955), was previously known from China and Japan. A key to the species of genus Ateleute known in the Oriental Region is provided.     

Review of the western palaearctic Ichneumon-flies of the genus Rhorus Förster, 1869 (Hymenoptera,Ichneumonidae: Ctenopelmatinae). II. The species of the punctus,longicornis, chrysopygus,and substitutor groups,the species with the black metasoma and some others

The Western Palaearctic species of Rhorus with the black metasoma and all the species of 4 speciesgroups (the punctus, longicornis, chrysopygus, and substitutor) are revised. Fourteen new species from the Western Palaearctic Region (mainly from Europe) are described: Rh. arkhyz sp. n., Rh. avacha sp. n., Rh. boreator sp. n., Rh. brevigena sp. n., Rh. gauldi sp. n., Rh. humalai sp. n., Rh. jussilai sp. n., Rh. laricis sp. n., Rh. olenek sp. n., Rh. pristiphorae sp. n., Rh. romani sp. n., Rh. suecicus sp. n., Rh. ucrainicus sp. n., and Rh. xanthopygus sp. n. A key to 40 species is given.     

Review of the ichneumon-flies of the genus <Emphasis Type="Italic">Rhorus</Emphasis> Förster, 869 (Hymenoptera,Ichneumonidae: Ctenopelmatinae): I. The species from the Far East (with description of 24 new species and with a key)

34 Palaearctic species of Rhorus are considered, 9 groups of species are distinguished, and 24 new species from the Eastern Palaearctic (mainly from the Russian Far East) and one new species reared in St. Petersburg from Phyllocolpa leucosticta are described. A key to all these species is given.     

The ant <Emphasis Type="Italic">Aphaenogaster dlusskyana</Emphasis> sp. nov. (Hymenoptera,Formicidae) from the Sakhalin amber—the earliest described species of an extant genus of Myrmicinae

The earliest member of an extant ant genus of the subfamily Myrmicinae, Aphaenogaster dlusskyana sp. nov., from the Sakhalin amber (Russia, Middle Eocene, 43–47 Ma) is described. Fossil representatives of the genus Aphaenogaster are critically analyzed and it is proposed to transfer many of these to the fossil morphotaxon Paraphaenogaster. The morphology, distribution, and possible evolutionary trends of the genus Aphaenogaster are reviewed and it is suggested that this genus appeared in the territory currently occupied by the Palearctic not later than the Early Eocene (over 50 Ma). Aphaenogaster dlusskyana can be considered the oldest described representative of an extant genus of the subfamily Myrmicinae, although earlier, as yet undescribed, records of extant genera of Myrmicinae belong to the Early Eocene.     

Species of the genus Lamachus F?rster (Hymenoptera,Ichneumonidae) parasitizing diprionid sawflies (Hymenoptera,Diprionidae) with descriptions of two?new species and a key to Chinese species

Four species of the genus Lamachus Förster 1869 belonging to the tribe Mesoleiini of the subfamily Ctenopelmatinae (Hymenoptera, Ichneumonidae) are reported from China. Two of them are new to science, Lamachus nigrus Li, Sheng & Sun, sp. n. and Lamachus rufiabdominalis Li, Sheng & Sun, sp. n. were reared from Neodiprion huizeensis Xiao & Zhou, in Guizhou Province of the Oriental part of China. The biology of Lamachus rufiabdominalis is described. A key to the species of Lamachus known from China is provided.     

First record of the ant subfamily Aenictinae (Hymenoptera,Formicidae) from Saudi Arabia,with?the description of a new species

The ant subfamily Aenictinae is recorded for the first time from the Kingdom of Saudi Arabia and for the second time from the Arabian Peninsula. A new species Aenictus arabicus sp. n., is described from the worker caste. Aenictus arabicus belongs to the Aenictus wroughtonii-group and appears to be most closely related to Aenictus rhodiensis Menozzi, but can be easily distinguished from the latter by the following characters: overall smaller size; cephalic index (head width/head length) small; occipital corners in lateral view rounded; antennal scape when laid back surpassing approximately two-thirds of head length; funicular segments 2–8 each at least 2× as long as broad; subpetiolar process well developed; petiole and postpetiole distinctly imbricate; gaster and clypeus entirely yellow, teeth of mandibles reddish- brown. Aenictus arabicus was collected from leaf litter, next to a tree of Psidium guajava L. The new species also is similar to Aenictus sagei and Aenictus wroughtonii. Affinities and a key to related species of the species group are given.     

Taxonomy of the hyper-diverse ant genus Tetramorium Mayr in the Malagasy region (Hymenoptera,Formicidae, Myrmicinae) – first record of the T. setigerum species group and additions to the Malagasy species groups with an updated illustrated identification key

In this study we provide an update to the taxonomy of the ant genus Tetramorium Mayr in Madagascar. We report the first record of the Tetramorium setigerum species group in Madagascar and describe the only Malagasy representative as Tetramorium cavernicola sp. n., which is known only from a cave in Ankarana. In addition, we provide an overview of the 19 proposed Malagasy species groups, and discuss their zoogeography and relationships to other groups and larger lineages within the hyper-diverse genus Tetramorium. At present, we recognise a highly unique Malagasy Tetramorium fauna with 113 species endemic to the island of Madagascar out of a total of 125 translating into an endemism rate of 93%. We hypothesise that this fauna is based on one or a few colonisation events from the Afrotropical region, with subsequent adaptive radiation in Madagascar. Furthermore, we present an updated and illustrated identification key to the Tetramorium species groups in the Malagasy region.     

A new species of the genus Disogmus Förster (Hymenoptera, Proctotrupoidea, Proctotrupidae) from the Eocene Rovno amber

Disogmus rasnitsyni Kolyada & Perkovsky, sp. n. is described from a fossil inclusion of Late Eocene amber (Ukraine). The new species is most similar to Disogmus basalis (Thomson, 1857), in particular, in the shape of the tyloids and the general shortening of the segments of antennae, but distinctly differs from it and the other species of the genus by having tyloids on flagellar segments 2-4 compared to 3-6 and 4-7 in other species.     

A new ant species of the genus Tapinoma (Hymenoptera, Formicidae) from Saudi Arabia with a key to the Arabian species

Tapinoma wilsonisp. n. is described and illustrated from Saudi Arabia based on the worker caste collected from Al Baha, Saudi Arabia. It closely resembles Tapinoma lugubre Santschi 1917, from Zimbabwe in body measurements but can be distinguished from the latter species by the yellowish brown color; the yellowish pubescence, the two pairs of hairs present on the anterior part of the head; and the distinctly concave anterior clypeal margin. Biological and ecological notes of the new species are presented. An identification key to the workers of the Arabian species of the genus Tapinoma is given.     

A new species of Apechoneura Kriechbaumer (Hymenoptera, Ichneumonidae, Labeninae) from Colombia

A new species of the ichneumonid subfamily Labeninae, Apechoneura seminigrasp. n., is described. Specimens were collected from the Amazon Rainforest of Colombia.     

Palaearctic species of the ichneumon-fly genus Campodorus Förster (Hymenoptera, Ichneumonidae): III. Species with long-haired ovipositor sheath, species with entirely rufous hind tibia, and species with white-banded tibiae

A complex of about 40 Palaearctic species of the genus Campodorus with long haired ovipositor sheath and with entirely rufous or white-banded hind tibia is considered and keyed. Twenty-one new species are described. The species with the pale rufous hind tibia have black hind coxa and trochanters, most of them also have rather long genae and scabrous mesopleura. The majority of these species are distributed in subarctic Siberia: C. yakutator sp. n., C. minutor sp. n., C. arctor sp. n., C. atripes sp. n., C. pequenitor sp. n., C. mordax sp. n., C. lucidator sp. n., C. subarctor sp. n., C. nikandrovskii sp. n., and C. genator sp. n. C. suomi sp. n. is described from northern Finland, C. labytnangi sp. n., from Kola Peninsula, the Polar Ural, and Transbaikalia, and only C. gallicator sp. n., from France (? Alps). The species with a white band on the hind tibia are mostly boreal; most of them have red coxae and trochanters (except for C. sakhalinator sp. n. and C. taigator sp. n.), rather short genae, and granulate mesopleura. In this group, eight new species are described: C. atrofemorator sp. n., C. barbator sp. n., C. sakhalinator sp. n. (all from the southern part of the Russian Far East), C. taigator sp. n. (southern Siberian), C. ciliator sp. n., C. melanopygus sp. n., C. marginator sp. n., and C. boreator sp. n. (European-Siberian).