First record of the leafhopper Platymetopiusnotatus Fieber (Hemiptera, Cicadellidae, Deltocephalinae) from northwest Algeria with description of the species.

BACKGROUND: A continuous monitoring of leafhoppers in a pear orchard (Pyruscommunis L.) of Santa Maria variety, located in Khemis Miliana in northwest Algeria for a period of 7 months from February to August 2019, revealed a species, Platymetopiusnotatus Fieber, earlier having been reported from Europe (Spain, Portugal). The species is reported in two African countries (Morocco and Tunisia). NEW INFORMATION: The species is recorded for the first time from Algeria and is re-described and illustrated along with the male and female genitalia structures for the first time.

Slender-horned gazelle (Gazella leptoceros), a new host for Tricholipeurus balanicus (Phthiraptera: Ischnocera: Trichodectidae).

This study was performed to provide information on Tricholipeurus balanicus (Werneck 1938) detected on slender-horned gazelles (Gazella leptoceros) (Cuvier 1842). Four slender-horned gazelles kept in the El Hamma Zoological Garden in Algeria were examined for lice in April 2015. Three of the four gazelles were infested with lice; of 37 lice collected from the infested animals, 14 were females, 16 were males, and 7 were nymphs. Lice were mainly found on the back and hind legs of the gazelles. The lice were collected by a forceps, preserved in 70% alcohol, and cleared in 10% KOH for 24 h. Thereafter, they were rinsed in distilled water, transferred to 70% and 99% alcohol, mounted on slides in Canada balsam, examined under a binocular microscope, and identified as Tricholipeurus balanicus (Werneck, 1938). To the best of our knowledge, T. balanicus on G. leptoceros has been reported for the first time.