Mabel Alvarado

The first Mesozoic microwhip scorpion (Palpigradi): a new genus and species in mid-Cretaceous amber from Myanmar

A fossil palpigrade is described and figured from mid-Cretaceous (Cenomanian) amber from northern Myanmar. Electrokoenenia yaksha Engel and Huang, gen. n. et sp. n., is the first Mesozoic fossil of its order and the only one known as an inclusion in amber, the only other fossil being a series of individuals encased in Pliocene onyx marble and 94–97 million years younger than E. yaksha. The genus is distinguished from other members of the order but is remarkably consistent in observable morphological details when compared to extant relatives, likely reflecting a consistent microhabitat and biological preferences over the last 100 million years.

First record of Oxytorinae (Hymenoptera: Ichneumonidae) from South America, with description of a new species of Oxytorus Forster, 1869

The monotypic subfamily Oxytorinae is recorded for the first time from South America. Oxytorus peruvianus sp. n. from a Peruvian premontane rain forest is described and illustrated. Information on the habitat and phenology of the new species is reported.

Discovery of the genus Meggoleus Townes, 1971 (Hymenoptera, Ichneumonidae, Tersilochinae) in Peru, with the description of two new species

Abstract The genus Meggoleus Townes, 1971 (Ichneumonidae, Tersilochinae) currently comprises two species, one from Brazil and one from Gabon. The genus is recorded from Peru for the first time, with a range extension of the type species, Meggoleus spirator Townes, 1971, and the discovery of two new species – Meggoleus fuscatus sp. n. and Meggoleus pampahermosensis sp. n. A key to the world’s species is provided.

Nocturnal Aphanistes (Hymenoptera: Ichneumonidae: Anomaloninae) in the Neotropical region, with the description of five new species

The crepuscularis species group of the ichneumonid genus Aphanistes Förster currently comprises three species-Aphanistes crepuscularis Dasch, A. guatemalenus (Cameron), and A. arcei Gauld Bradshaw. Five new species are described: A. augustoi sp. n., A. cachil sp. n., A. paolae sp. n., A. ruthae sp. n., and A. silviae sp. n. A key for the species group is also presented.

A remarkable new species of Sicophion Gauld, 1979 (Hymenoptera: Ichneumonidae) from Peru, with a key to the species

The small Neotropical genus Sicophion currently comprises two described species. The genus is recorded for the first time in Peru and S. yana sp. n. is described. A key to species is also presented.