Examination of the metafemoral spring in a variety of Neotropical genera was undertaken th order to further the study of this internal generic level charac ter and to relate some Neotropical genera to the previously established metafemoral spring morpho-groups of Palearctic and Nearctic genera. Although this study concerns only a portion 91 of the more than 220 genera of Neotropical Alticinae, ...

The recent catalog of Neotropical Nabidae is corrected and updated. Synonymies, species, and references that were overlooked are now included. 11 genera and 83 species are presently known from this region.

The lernaeopodids are highly specialized copepods which are widely distributed worldwide. In this paper the first record of Clavellisa ilishae Pillai, 1962 in the Neotropical region is documented parasitizing Sardinella brasiliensis from coastal zone of Rio de Janeiro, Brasil.

Three species previously described from the neotropical region are revised and four new species are described: Thienemanniella biobio sp. n. and T. manihuales sp. n. as males and pupae from Chile, T. sancticaroli sp. n. and T ubatuba sp. n. as males, females and immature stages from Brazil. The new Thienemanniella spreta species group is delimited consisting of T. spreta (Roback) sensu Sublette...

Asopines are predators of insects, with several species with potential as biocontrol agents of a number of pests. Metrogaleruca obscura (Degeer), a neotropical species of Galerucini, was introduced in Malaysia, Asia, and Mauritius, Africa, to control the spread of Cordia curassavica (Boraginaceae), a native plant of the neotropics. The occurrence of Podisus nigrispinus (Dallas) preying on M. ob...

Triclistus Förster, 1869 is a widely distributed genus of the family Ichneumonidae, rich in the Old World but poorly represented in the Neotropical region. Ten new species are described: Triclistus ashaninka sp. n., Triclistus bicolor sp. n., Triclistus castilloai sp. n., Triclistus cholo sp. n., Triclistus muqui sp. n., Triclistus inti sp. n., Triclistus matsiguenga, sp. n., Triclistus meganto...

We present revisions of the Neotropical genera Ruizodendron and Pseudephedranthus (Annonaceae). Ruizodendron includes a single species R. ovale. Pseudephedranthus now comprises two species, with the description of the new species P. enigmaticussp. nov. extending the range of the genus beyond the Upper Rio Negro region of Brazil (Amazonas) and adjacent Venezuela (P. fragrans), to include Guyana,...

Three new species of Meteorus parasitoids of Arctiinae are described: Meteorus anuae n. sp., M. juliae n. sp. and M. mirandae n. sp. The first biological record for M. cecavorum Aguirre & Shaw as well as its cocoon description is reported. A comprehensive key for the Neotropical Meteorus attacking Arctiinae is provided. A total of nine Meteorus species have been reared from Arctiinae in the Neo...