Daniel A. Aquino

Nesting biology and associated insect enemies of the exotic leaf cutter bee Megachile (Eutricharaea) concinna (Hymenoptera: Megachilidae) in Argentina

The nesting biology of the exotic bee Megachile (Eutricharaea) concinna Smith, 1879 and its negative interactions with other insects were studied. Trap nests made of wood were located in an urban environment in Buenos Aires province, Argentina, and surveyed during 26 months. The lifecycle and the structure of the nest of M. concinna are described. We also report six interactions between this bee and native and exotic parasitoids and cleptoparasites. The species Baryscapus megachilidis is recorded here for the first time in Argentina.

Diapriinae Wasps (Hymenoptera: Diaprioidea: Diapriidae) Associated with Ants (Hymenoptera: Formicidae) in Argentina

We provide an overview of diapriid wasps associated with ants in Argentina and the diversity of interactions they have developed with their hosts. As a result, we report 16 species of nine genera of Diapriinae, two new geographic distributions, three new association records, illustrations, and photographs. We highlight myrmecophile symphylic species, with a high degree of integration with the host ants, adaptation being morphological and behavioral. A table with diapriid species and ant hosts is given.

The first record of conopid flies (Diptera: Conopidae) and eulophid wasps (Hymenoptera: Eulophidae) as parasitoids and hyperparasitoids associated with carpenter bees (Apidae: Xylocopinae) in Argentina

Summary This is the first record for the parasitoid association between eulophids and conopids in the carpenter bee Xylocopa augusti Lepeletier. Biological features of Physocephala Schiner are mentioned. A diagnosis for Pediobius williamsoni (Girault) is given and morphological characters are illustrated.

New World Stephanocampta (Hymenoptera: Mymaridae)--descriptions of a new species from Argentina and of the male of S. masoni .

The genus Stephanocampta Mathot (Hymenoptera: Mymaridae) includes only two previously described species, S. yaosekoensis Mathot from the Democratic Republic of the Congo (Mathot 1966) and S. masoni (Yoshimoto) from Costa Rica and Panama (Yoshimoto 1990). Here we describe and illustrate a new species from Argentina based on a female, illustrate both sexes and newly describe the male of S. masoni , and provide a key to differentiate females of the three species.

The microlepidopterous natural enemy Brachymeria subrugosa Blanchard, 1942 (Hymenoptera, Chalcididae): identity, hosts and geographic distribution.

A lectotype is designated for Brachymeria subrugosa Blanchard 1942 (Hymenoptera: Chalcididae). The species is diagnosed, redescribed, and compared to B. subconica Bouček, both of which are illustrated by macrophotography. Taxonomic notes, new parasitoid/host associations and new geographical records are also given for B. subrugosa. Brachymeria annulipes (Costa Lima 1919), a junior secondary homonymy of Chalcis annulipes Walker 1834, is proposed as a junior synonym of B. subrugosa syn. nov.

First record of the parasitoid Melittobia hawaiiensis (Hymenoptera: Eulophidae) associated with Emphorini bees (Hymenoptera: Apidae)

Melittobia hawaiiensis Perkins (Hymenoptera: Eulophidae), a common gregarious ectoparasitoid of aculeate Hymenoptera and other orders of insects, is reported for the first time as a parasitoid of Melitoma segmentaria (Fabricius) (Hymenoptera: Apidae) in Buenos Aires, Argentina.

Two new species of Idris Foerster (Hymenoptera: Platygastridae) from Southeastern Brazil, parasitoids of Argyrodes elevatus Walckenaer (Araneae: Theridiidae) and Scytodes sp. (Araneae: Scytodidae)

In this study two new species of Idris Foerster (Platygastridae) are described and illustrated from specimens reared from eggs of the spider species Argyrodeselevatus Walckenaer(Theridiidae) and Scytodes sp. (Scytodidae) collected in Minas Gerais State, Brazil.Scytodidae is a new host family

Detección de hiperparasitoides de Mastrus ridens (Hymenoptera: Ichneumonidae) y Ascogaster quadridentata (Hymenoptera: Braconidae) en el Alto Valle del Río Negro, Argentina

En el presente trabajo se describe y se analiza la accion de un grupo de hiperparasitoides que atacan a los parasitoides Mastrus ridens y Ascogaster quadridentata introducidos al valle para el control de Cydia pomonella . Se realizan comparaciones entre sitios colonizados en la temporada 2013-2014 y uno colonizado entre 2005 y 2007. Tambien se analizan las variaciones de los hiperparasitoides durante las estaciones del ano. Se cita por primera vez a Eupelmus vesicularis y Eupelmus cushmani como parasitoides de las especies Mastrus ridens y Ascogaster quadridentata y a Dibrachys microgastri como parasitoide de Ascogaster quadridentata en la region del Alto Valle del Rio Negro.