New Insight Into the Evolutionary Arms Race Between Spider Egg Sac Pseudoparasitoids and Active Maternal Care by the Spiders

Posted by
  New Insight Into the Evolutionary Arms Race Between Spider Egg Sac Pseudoparasitoids and Active Maternal Care by the Spiders ABSTRACT Pseudoparasitoids can lead to high mortality in spider egg sacs, and in some cases, they reduce the reproductive success of a spider female to zero. On the other hand, a species that develops within the spider's egg sac uses a limited resource derived from a single egg sac for its larval development. Therefore, the most crucial behaviour that increases the fitness of free-living pseudoparasitoid females is choosing the best host for their offspring. We analysed various points of the counter-adaptations of the spider egg sac pseudoparasitoid and spiders exhibiting active maternal care, utilising the ichneumonid  Hidryta fusiventris  (Thomson, 1873) and the wolf spider  Pardosa lugubris  (Walckenaer, 1802). We showed that the oviposition decision of  H. fusiventris  is based on the spider's egg sac size and that the fema...

New Species of the Digger Scorpions, Odontobuthus Vachon, 1950 (Buthidae) from Southern Iran

Posted by

 


New Species of the Digger Scorpions, Odontobuthus Vachon, 1950 (Buthidae) from Southern Iran

Odontobuthus Vachon, 1950, with nine described species, is a genus of digger scorpions in the Buthidae family, which can be distinguished by having large tooth-like processes on the ventrosubmedian carinae of the second and third metasomal segments. Morphological and molecular investigation of coastal specimens from the Hormozgan province in Iran led to the discovery of a new species named Odontobuthus persicus sp. nov. that is described here. It is closely related to O. chabaharensis morphologically. The new Odontobuthus species has two large and conical tooth-like processes on ventrosubmedian carinae of the second and third metasomal segments, while O. chabaharensis has three or four medium to large tooth-like processes. Based on phylogenetic analysis using partial COI sequences, the new species is placed as a sister taxon of O. brevidigitus. Genetic differences with the other species of Odontobuthus (mean = 0.107) confirmed the validity of this species.

Acknowledgments: I would like to thank Hossein Barahoei (Ms.c) from the Research Institute of Zabol
I.R.IRAN, for forwarding this work and paper. 

Barahoei H, Shahi M. 2024. New species of the digger scorpions, Odontobuthus Vachon, 1950 (Buthidae) from Southern Iran. Zool Stud 63:48. doi:10.6620/ZS.2024.63-48.