Vibertiola cinerea
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Vibertiola cinerea is a species of bug from the subfamily Harpactorinae in the family of predatory bugs (Reduviidae). In the genus Vibertiola there are two other species, Vibertiola argentata and Vibertiola ribauti , both of which are native to Africa.
features
The bugs of the species Vibertiola cinerea have a slim build, they reach body lengths of 16.5 to 18.5 millimeters and about three millimeters wide. They are light brown in color with indistinct yellowish markings, but often appear gray or whitish due to the hairiness. The cylindrical head is about three times as long as it is wide, it is parallel, only the short foremost section, from the point of deflection of the antennae, is somewhat narrowed. The straight proboscis reaches the middle of the abdominal plate (sternum) of the first trunk segment in the rest position. The integument of the head and pronotum has stiff, protruding bristle hairs that are slightly shorter than the diameter of the eye. The hair on the first two antenna segments and the thighs and rails of the legs are longer, they are about as long as the diameter of these limbs. The side and rear edges of the trapezoidal pronotum have a continuous row of long hair. The triangular scutellum is about 1.4 times longer than it is wide at the base. The half-covers of the wings reach the tip of the sixth abdominal segment. The abdomen is narrowed, a little less wide than the pronotum. The species can be distinguished from other predatory bugs of the subfamily Harpactocorinae by its elongated shape with a pronotum that is noticeably longer than it is wide.
distribution
The distribution area of Vibertiola cinerea is in the southern Mediterranean. The species occurs in Catalonia (here only near the coast), in Sicily , in Algeria , in Egypt (including the Sinai Peninsula ) and in Yemen .
Way of life
The typical habitat of the bedbugs is steppe-like grass vegetation, in Spain exclusively on the clump grass Hyparrhenia hirta , in North Africa also Halfagras ( Stipa tenacissima ) (in Egypt Panicum turgidum is also given). The well-camouflaged bugs lurk in the leaf groves at the base of their host plants for prey. The species is not picky about its food spectrum (polyphagous), small, soft-skinned insects such as fruit flies (Drosophilidae), caterpillars and crickets (Gryllidae) belong to the range of prey. The species forms one generation per year. The adults are observed from March to October. The nymphs appear in June. The last two nymph stages are apparently able to overwinter (hibernation). In Catalonia, the species is considered threatened due to the decline in its typical habitat ( IUCN category VU D2).
Taxonomy
The species was first described by Géza von Horváth in 1907 as Vibertia cinerea , it is a type of the genus. In 1909 the author himself noticed that the genus name Vibertia was preoccupied by a genus of beetles described by Ernest Marie Louis Bedel in 1903 (weevils or Curculionidae, today synonymous with Koenigius Heyden) and changed the genus name itself to Vibertiola .
Web links
Individual evidence
- ↑ a b c d e f g Marcos Roca-Cusachs: New record for Vibertiola cinerea (Horváth, 1907) from the Iberian Peninsula (Heteroptera: Reduviidae: Harpactorinae) (PDF, 2.2 MB) Boletín de la Sociedad Entomológica Aragonesa 30: 361-363. January 2015. Retrieved July 29, 2018.
- ^ J. Ribes (1961): Contribución al estudio de los Reduviidae de Cataluña. Miscelánea Zoológica 1 (4): 57-73.
- ↑ a b c d Invertebrats que requereixen mesures de conservació a Catalunya (PDF, 370 KB) ICHN - Institució Catalana d'Història Natural. June 2010. Retrieved July 29, 2018.
- ↑ DG Horvàth (1909): Species generis Reduviidarum, Sirthenea spin. Annales Museo Nationalis Hungarici 7: 356-368.