New records of biting and predaceous midges from Florida, including species new to the fauna of the United States (Diptera: Ceratopogonidae)

We provide new records of biting and predaceous midges (Diptera: Ceratopogonidae) from Florida, including the first documented United States records of Atrichopogon (Atrichopogon) caribbeanus Ewen, Dasyhelea griseola Wirth, D. scissurae Macfie, and Brachypogon (Brachypogon) woodruffi Spinelli and Grogan. Atrichopogon (Meloehelea) downesi Wirth, Forcipomyia (Thyridomyia) monilicornis (Coquillett), F. (T.) nodosa Saunders, Ceratoculicoides blantoni Wirth and Ratanaworabhan, Mallochohelea albibasis (Malloch), Bezzia (Bezzia) imbifida Dow and Turner and B. (B.) mallochi Wirth are recorded for the first time from Florida. Forcipomyia (Thyridomyia) johannseni Thomsen, Bezzia (Bezzia) expolita (Coquillett), and B. (B.) pulverea (Coquillett) are deleted from the ceratopogonid fauna of Florida. Dasyhelea koenigi Delécolle and Rieb is a junior objective synonym of Dasyhelea scissurae Macfie (NEW SYNONYM). The total number of Ceratopogonidae recorded from Florida is now 249 species contained within 27 genera

Acaricidal effects of the essential oil of Origanum minutiflorum (Lamiaceae) against Rhipicephalus turanicus (Acari: Ixodidae)

The acaricidal effects of the volatile essential oil Origanum minutiflorum O. Schwarz & P.H. Davis (Lamiaceae) against adult Rhipicephalus turanicus was evaluated at a variety of concentrations and exposure times. Generally tick mortality increased with concentration and exposure. Ticks exposed to vapors from cotton wicks containing at least 10 mu l/L resulted in complete (100%) mortality at 120 min. The major constituent of essential oil obtained from the plant material of O. minutiflorum was carvacrol.Akdeniz Üniversites

Comparative efficacy of spinosad with conventional acaricides against hard and soft tick populations from Antalya, Turkey

The acaricidal efficacy of ceramic tiles treated at field application rates with either spinosad (Mozkill (c) 120 SC, 0.01 g ai/m(2)), deltamethrin (Impotek Deltamethrin (c) EW, 0.01 g ai/m(2)), permethrin + esbiothrin (Chrysamed (c), 0.1 g ai/m(2)), chlorpyrifos-methyl (Chlortoks (c) EC 50, 0.2 g ai/m(2)) or a mixture of alpha-cypermethrin/tetramethrin/piperonyl butoxide (Ecorex Alfa (c) SE, 0.01 g ai/m(2)), against larval Rhipicephalus turanicus and Argas persicus ticks was determined in laboratory bioassays. All ticks were initially exposed to treated tiles for 15 min then removed to non-treated containers and mortality evaluated for 15 min, 1 h, 6 h, and 24 h postexposure. Generally, A. persicus proved to be the most susceptible of the two species to all treatments. The alpha-cypermethrin/tetramethrin/piperonyl butoxide mixture was the quickest acting acaricide against larval A. persicus where 100% mortality was observed 15 min postexposure. For the rest of the treatments complete mortality was obtained at 1 h except for permethrin/esbiothrin which occurred at 6 h postexposure. Complete mortality of larval R turanicus occurred to deltamethrin and spinosad at I h postexposure with all acaricides providing 100% control at 6 h except permethrin/esbiothrin which only achieved 92% control through the end of the study (i.e. 24 h). Our results showed that spinosad would be a useful addition in a tick control program as an alternative for pyrethroids and organic phosphorus acaricides against both tick species.Akdeniz Üniversites

Acaricidal activity of Satureja thymbra L. essential oil and its major components, carvacrol and gamma-terpinene against adult Hyalomma marginatum (Acari: Ixodidae)

The acaricidal activity of a volatile essential oil hydrodistillate of Satureja thymbra L (Lamiaceae) and its major constituents, carvacrol and gamma-terpinene, were evaluated against field-collected unfed adult Hyalomma marginatum. The distillate was tested against this tick species at 5, 10, 20, and 40 mu L/L while the two major components were each tested at 10 mu L/L. Generally, tick mortality to the S. thymbra distillate increased with concentration and exposure time. Ticks exposed to vapors from cotton wicks containing at least 40 mu L/L resulted in complete (100%) mortality at 3 h. The lower concentrations provided >= 90% mortality at 3 h post treatment with complete mortality at 24 h. Knockdown was observed only in the carvacrol and gamma-terpinene treatments. Ticks exposed to carvacrol-treated wicks produced >93% knockdown at 3 h but at 24 h approximately 57% were dead. The gamma-terpinene treatment produced >= 90% knockdown at 105 min through 3 h but at 24 h only about 87% of the ticks were dead.Akdeniz Üniversites

Comparative efficacy of spinosad with conventional acaricides against hard and soft tick populations from Antalya, Turkey

WOS: 000267778200015PubMed ID: 19446398The acaricidal efficacy of ceramic tiles treated at field application rates with either spinosad (Mozkill (c) 120 SC, 0.01 g ai/m(2)), deltamethrin (Impotek Deltamethrin (c) EW, 0.01 g ai/m(2)), permethrin + esbiothrin (Chrysamed (c), 0.1 g ai/m(2)), chlorpyrifos-methyl (Chlortoks (c) EC 50, 0.2 g ai/m(2)) or a mixture of alpha-cypermethrin/tetramethrin/piperonyl butoxide (Ecorex Alfa (c) SE, 0.01 g ai/m(2)), against larval Rhipicephalus turanicus and Argas persicus ticks was determined in laboratory bioassays. All ticks were initially exposed to treated tiles for 15 min then removed to non-treated containers and mortality evaluated for 15 min, 1 h, 6 h, and 24 h postexposure. Generally, A. persicus proved to be the most susceptible of the two species to all treatments. The alpha-cypermethrin/tetramethrin/piperonyl butoxide mixture was the quickest acting acaricide against larval A. persicus where 100% mortality was observed 15 min postexposure. For the rest of the treatments complete mortality was obtained at 1 h except for permethrin/esbiothrin which occurred at 6 h postexposure. Complete mortality of larval R turanicus occurred to deltamethrin and spinosad at I h postexposure with all acaricides providing 100% control at 6 h except permethrin/esbiothrin which only achieved 92% control through the end of the study (i.e. 24 h). Our results showed that spinosad would be a useful addition in a tick control program as an alternative for pyrethroids and organic phosphorus acaricides against both tick species. (C) 2009 Elsevier B.V. All rights reserved.Akdeniz UniversityAkdeniz University; Scientific Research Projects Committee Unit, AntalyaAkdeniz UniversityThe authors are thankful to Akdeniz University, Scientific Research Projects Committee Unit, Antalya, for financial support