Spilostethus pandurus (Hemiptera: Heteroptera: Lygaeidae), nuevo registro para República Dominicana y el Caribe insular

Se reporta por primera vez para República Dominicana y el Caribe insular la especie de chinche de semillas Spilostethus pandurus (Scopoli, 1763) originaria del Viejo Mundo. Este chinche podría representar una amenaza para múltiples plantas cultivadas pertenecientes a varias familias. Se ofrecen algunas características diagnósticas que permiten diferenciar la especie reportada de otros Lygaeidae en la Hispaniola.

Biodiversity of Heteroptera in Puerto Rico: Part II. Annotated Checklist and Keys of Lygaeoidea (Pentatomomorpha)

Lygaeoidea fauna of Puerto Rico and its adjacent islands is presented as part of a revision of the Heteroptera of these islands. In this work, we present 73 species in nine families known from Puerto Rico: Berytidae (4); Lygaeidae (17); Cimidae (1); Ninidae (1); Blissidae (3); Geocoridae (7); Oxycarenidae (1); Pachygronthidae (2); and Rhyparochromidae (37). Of this total, nine represent new records for Puerto Rico: Gampsocoris decorus (Uhler), Spilostethus pandurus (Scopoli), Icshnodemus variegatus (Signoret), Geocoris uliginosus Say, Valtissius distinctus (Distant), Pseudopachybrachius concepcioni Zheng & Slater, Paromius dohrnii (Guérin-Méneville), Ozophora barbudensis Baranowski, and O. xancthocnemis Baranowski. Most species found here are also widely found in the West Indies. The genera with the most species represented are the rhyparochromids Ozophora Uhler and Neopamera Harrington. Taxonomic accounts presented in this work include synonymies, known distribution, lists of hosts and a listing of examined specimens. Also, we provided taxonomic keys and color plates of 52 of the species discussed.

Effect of temperature on development and population growth rates of Spilostethus pandurus (Scopoli) (Hemiptera: Lygaeidae) in Giza, Egypt

The effects of temperature on the life history of Spilostethus pandurus (Scopoli) were examined by determining the different developmental and reproductive parameters with respect to days of hatching, oviposition, and adult emergence of insects reared in field cages at Giza, Egypt. Hatching, oviposition, and adult emergence continued all year round; the average daily temperature in the coldest month (January) seemed to be above developmental thresholds for different stages. This lygaeid completed six overlapping generations in 1 year. The basic population parameters, i.e. net reproductive rate (R0), gross reproductive rate (GRR), instantaneous rate of natural increase (r), finite rate of natural increase (λ), and mean generation time (T) exhibited a more or less cyclic pattern in successive generations. The highest value of r (rmax) was considered as the intrinsic rate of natural increase of this species.