Hi,

what are the environmental condition? Those might effect your population growth. As well I might ask: if you worry about Entomophtora did you find any? Could you show us some picture of those entomophtora?

Here are some useful link:

Article Analysis of the population structure of Macrolophus pygmaeus...

https://www.actahort.org/books/1041/1041_18.htm

https://www.cabi.org/isc/FullTextPDF/2015/20153028708.pdf

Article Inoculative release strategies of Macrolophus pygmaeus Rambu...

Best regards

Hi Francesco,

we didn´t find any typical Entomophtora symptoms on Macrolophus body. On the other hand the overal population development is very slow or even non. Humidity is over 80% usually, average temperature about 20 °C and on top of natural light we have also artificial light.

I´m going to check the link wich you have send me.

Thank you!!

Entomphtora may be effect of Macrolophus bug. But depending on environment condition...

Ahoy Vasku.

Some years ago in Poland in greenhouses we had similar problems with the Macrolophus population in the middle of the season. At that time I found dead and diseased insects on plants. I observed deformities of insect abdomen. Insects moved inefficiently. At that time I was able to take some pictures. I had a very high suspicion that they were Entomophtorales, but we didn't do tests in the laboratory. Colleagues from Koppert NL confirmed the suspected diseased, also without tests. If this helps you, I send photo of one of this insect (quality of photo are not good because they was scanned analog slide).

Ahoj Michale,

thank you for perfect answer and good picutre. I have feeling that we have different reasons. In that specific greenhouse where this problem was, we had also very high humidity.

I agree with Francesco Desiderio .