Gall Midges of the Genus Feltiella Rübsaamen (Diptera, Cecidomyiidae) in the Northwest of Russia, with Description of a New Species

Spider mite predator Feltiella acarisuga (Vallot, 1827) (Diptera: Cecidomyiidae) in greenhouse strawberry cultivation in Antalya Province: recognition, population dynamics and parasitization by Aphanogmus sp.

“…Pupae are 1.1-1.47 mm in size and can be found in a white cocoon (Lee et al, 2004). Fedotova & Kozlova (2019) found the body length of F. acarisuga to be 0.99-1.38 mm in females and 1.16-1.20 mm in males, and the antennae lengths were 0.61-0.77 and 1.69 mm, respectively. Lee et al (2004) reported that adult males have a length of 1.11-1.33 mm and females 1.27-1.58 mm.…”

A new species of Contarinia (Diptera: Cecidomyiidae) from flower galls on the relict tree Zelkova abelicea (Ulmaceae) endemic to Crete (Greece)

“…the newly described species belongs to Contarinia rondani 1860, one of the biggest, loosely defined and paraphyletic genera of Cecidomyiidae, with 318 described species worldwide (Gagné et al 2018;Gagné & Jaschhof 2021). Many species of this genus develop in simple flower galls, mostly as gregarious larvae in unopened and slightly to conspicuously deformed flowers on host plants belonging to many different families (e.g., Gagné 1989, Fedotova 1991, 1993uechi et al 2011;kolesik et al 2017;Mori et al 2019). the overwhelming majority of species leave their galls to pupate in the soil; many of them complete several generations per year, but some are bivoltine or univoltine.…”

Application of biological agents to protect cucumber plants against multiple pests in greenhouses in Northwest Russia

“…According to the research data, the application rate of 75 A. swirskii specimens per 1 m 2 during transplanting of seedlings, in presence of the pest, is sufficient for protection of cucumber plants against greenhouse whitefly. [11] However, manufacturers of entomophages, such as Koppert, recommend applying 1 sachet (250 mite specimens) per 2.5 m 2 once in 4-6 weeks for prophylactic purposesthat is, twice during a cucumber growth cycle [3], which is at least 2 times the application rate we use. Other facilities also use higher application rates of predatory insects for prophylactic purposes.…”

“…[13] Moreover, in 2015-2016 a new species of predatory midge F. luboviae was tested at the facility. [3,4] F. luboviae was brought under cultivation in the biological protection laboratory of the All-Russian Research Institute of Plant Protection. The predatory midge was also used in harbourage areas of the pest together with P. persimilis.…”

“…persimilis has been used at the application rate of 2 specimens/m 2 once in 3 weeks. Also predatory gall midge Feltiella luboviae Fedotova et Kozlova was released in rate 0,1-0,2 specimens/m 2 weekly [3,4,5]. To suppress A. gossypii the parasitoid A. colemani was released.…”