The Nabidae (Hemiptera) of the Neotropical Region are cataloged. A total of 12 genera and 83 species are listed together with their synonyms. References are given to the original descriptions and the subsequent taxonomic position, the location of types, and the geographic distribution. A comprehensive bibliography is provided.
-The adult female of Neohydatothrips denigratus (De Santis) is redescribed, the male and immature stages (larva, prepupa and pupa) are described for the fi rst time, and aspects of the biology of this species are made known. Descriptions of the different stages of development were made from laboratory-reared specimens on using twigs of Phaseolus vulgaris as a feeding and oviposition substrate. Neohydatothrips denigratus undergoes its life cycle on the leaves of P. vulgaris, no immature stages were found in fl owers or fruits. Under controlled conditions (21 ± 2ºC; 80 ± 4% RH; photophase: 12h), this species needed 21.6 ± 1.60 d to complete development (egg: 7.0 ± 1.00 larva I: 3.7 ± 1.40; larva II: 4.2 ± 1.10; prepupa: 1.8 ± 0.70, pupa: 5 ± 1). Longevity was 6.0 ± 2.00 days and observed sex ratio was 2:1. From the sixteen plants belonging to ten families recorded as hosts to this species, larvae were found only on two species of Fabaceae and one of Solanaceae.
Una especie nueva del género Iralunelus Ŝtys, 1974: I. zipaquirensis sp. n. Contreras, Neder y Coscarón de Zipaquirá, Colombia es descripta e ilustrada. Esta especie es cercana a I. sahlbergi (Bergroth, 1886) y a I. simulans (Walker, 1873) por la presencia de una callosidad oval en el escutelo y por los ángulos anterolaterales del pronoto redondeados; pero puede distinguirse de estas por los siguientes caracteres: escutelo con una callosidad redondeada grande sobre la mitad anterior; conexivo delgado; paratergitos VIII del macho rectangulares con el ápice truncado, y ubicados oblicuamente a la longitud del pigóforo. Se ofrecen ilustraciones de la genitalia de la nueva especie.
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