a survey on the genus exallonyx kieffer, 1904 (hymenoptera: proctotrupidae) was conducted in northern iran. the specimens were collected using malaise traps during 2010–2011. the genus exallonyx and six species were collected and identified for the first time from iran: exallonyx ater (gravenhorst, 1807), e. brevicornis (haliday, 1839), e. formicarius kieffer, 1904, e. ligatus (nees, 1834), e. ...

the species dibrachys lignicola graham is newly recorded from rayen region of kerman province, iran. the diagnostic characters and geographical distribution of the species are briefly discussed.

Species are fundamental units in studies of systematics, biodiversity and ecology, but their delimitation has been relatively neglected methodologically. Species are typically circumscribed based on the presence of fixed (intraspecifically invariant or non-overlapping) diagnostic morphological characters which distinguish them from other species. In this paper, we argue that determining whether...

Giesbertiolus curoei, new species is described from a female specimen collected in northwestern Panama. This species is compared with the three known species of Giesbertiolus Howden and with the genus Dialithus Parry. The genera Dialithus and Giesbertiolus are redefined to include this new species, and new diagnostic characters are provided for both. Illustrations of diagnostic characters and a...

Tanacetum zahlbruckneriis reported as a new record from northwestern Iran. A complete description, diagnostic characters and a distribution map of T. zahlbruckneriare presented. The phylogenetic position of T. zahlbruckneri in a concise molecular framework based on the sequences of ITS nrDNA data are presented. A taxonomic conclusion about the previously reported samples of this enigmatic speci...