A new species of terrestrial pitviper, Porthidium porrasi, is described from mesophytic forests of the Península de Osa and surrounding area of the Pacific versant of southwestern Costa Rica. It is most similar to P. nasutum and is characterized by a pattern of bands, persistence of the juvenile tail color in adults, and a high number of dorsal scales. Analysis of mtDNA sequences confirms its d...

Brown marmorated stink bug, Halyomorpha halys (Stål), is a highly polyphagous invasive species attacking both cultivated and wild plants increasing its threat to ecosystems as a global pest. However, dispersal biology of this invasive species is not well understood. This study evaluated the flight capacity and behavior of H. halys under laboratory, semi-field, and field conditions. Flight mills...

Using species distribution data, we developed a georeferenced database of troglobionts (cave-obligate species) in Tennessee to examine spatial patterns of species richness and endemism, including >2000 records for 200 described species. Forty aquatic troglobionts (stygobionts) and 160 terrestrial troglobionts are known from caves in Tennessee, the latter having the greatest diversity of any sta...

Nezara viridula L. and Euschistus servus (Say) are the predominant species of phytophagous stink bugs on corn, Zea mays L., in Georgia. Oebalus pugnax pugnax (F.) occurs in relatively low numbers, and the predatory stink bug Podisus maculiventris (Say) is commonly found. Limited information is available on natural biological control of these four stink bug species in Georgia corn fields; there...

The monophyletic genus Chinavia Orian includes 80 species of which 18 are endemic to Brazil. The general morphology of the species allows the recognition of different groups of species, however, the monophyly and the phylogenetic relationships of those groups has not been investigated. We present here the first cladistic analysis involving species of Chinavia, with particular focus on the obsti...

Different theories of bodily tides assume different forms of dependence of the angular lag 8 upon the tidal frequency %. In the old theory (Gerstenkorn 1955, MacDonald 1964, Kaula 1964) the geometric lag angle is assumed constant (i.e., 8 ~ x), while the new theory (Singer 1968; Mignard 1979, 1980) postulates constancy of the time lag At (which is equivalent to saying that 8 ~ j} ). Each partic...

Nezara viridula L. (Hemiptera: Pentatomidae) is a serious pest of macadamia nuts, Macadamia integrifolia, in Hawaii. Using ruthenium red dye to stain stink bug feeding probes, feeding activity was determined for nuts of various maturity levels harvested from the tree and off the ground throughout the growing season in five commercial cultivars. Damage occurred in the tree and on the ground duri...

Smeđa mramorasta stjenica (Halyomorpha halys Stål, 1855.) invazivna je, polifagna vrsta stjenice, koja se iz izvornog azijskog područja proširila na područje Sjeverne i Južne Amerike te Europe. Cilj ovoga rada je prikazati dosadašnja istraživanja potencijalnih prirodnih neprijatelja H. koji bi mogli primijeniti za smanjenje populacije. ima velik broj neprijatelja: kukci, gljive, nematode, mikro...

The stink bug genus Ochrophara Stål, 1871 (Hemiptera, Heteroptera, Pentatomidae, Pentatominae, Sephelini) is dis-tributed in the Oriental Region, including southern China; however, no species has been recorded Japan. To date, O. chinensis Zheng & Liu, 1987 only reported China. In present study, and were Japan for first time based on materials from Okinawa Ishigaki islands of Ryuky...