Rudolf Ritt

10 Questions 228 Answers 0 Followers

Questions related from Rudolf Ritt

Do pseudo scorpions glow under UV light, too?

Scorpions are known to reflect UV light on their surface and change it into a greenish visible light, spiders are not known to do so. Which Arachnids share this phenomenon with the scorpions?

05 June 2017 9,194 39 View

Coleoptera: What does this behaviour mean?

This specimen of Carabus intricatus (Linnaeus, 1761) raised and lowered the abdomen alternating and spread the cerci (?). There was no other specimen present. It was in the natural environment, in...

28 November 2016 9,018 17 View

What kind of insect is this?

I found this in a meadow in the Austrian Alps at about 1000 m above sea level. It is fixed on the stem of a plant of Compositae. The grub is approximately as big as the figures (eggs?) in the...

04 August 2016 7,571 17 View

How can I distinguish between Cicadella viridis and Cicadella lasiocarpae?

I heard, this two species are often mixed up. Planthoppers and leafhoppers are not my special subjects, but I often meet a lot of specimen on my moth screen at night. The attached picture I...

09 July 2016 8,863 4 View

Does anybody know genus or species of this larva of Coleoptera?

I found this larva in a marsh area of a renatured moor, near a forest. Germany, Lower Bavaria, 2016-06-18. Length about 12-15 mm Thank you very much for your help! Rudolf Ritt

23 June 2016 323 9 View

Can anybody determine this Cerambycid beetle?

Determination only with pictures is difficult or impossible, I know. I thought, it is Acmaeops septentrionis, but I am not sure. Germany, Bayerischer Wald, 320 m, Meadow in a small river valley,...

28 November 2015 1,647 21 View

Can anybody confirm my determination of this beetle?

While attracting Lepidoptera with a light trap, this specimen of Coleoptera, Lycidae, was also attracted and I took a (unfortunately very bad) photograph. I determined it as the very rare...

13 November 2015 4,655 17 View

Can anyone tell me the species of this Micro moth?

I think it belongs to Argyresthinae, but I'm not sure. I found it in Germany, Bavaria, wood at a southside leaning with oaks and Carpinus betulus, 2015-07-03; in the night at light, 450m Three...

26 September 2015 9,411 3 View

Does anybody know something or some work about butterflies feeding on pollen, especially in Europe?

I know the work of: Lawrence E. Gilbert: Pollen Feeding and Reproductive Biology of Heliconius Butterflies. Proc. Nat. Acad. Sci. USA, 69(6): 1403-1407, 1972, I also know, that Micropterigidae...

01 September 2015 1,852 4 View

Does anybody know about recordings of Euscorpius germanus in Germany?

Maybe there are introduced individuals from the Mediteranean or abandoned idividuals fom pet owners, but will they stay alive and reproduce in nature?

26 August 2015 7,368 9 View