Fungus on a beetle

Fungus on a beetle

Observation - Fungus on a beetle - UK and Ireland. Description: I'm assuming this is a fungus but not certain. It is on the underside of a water beetle, Helochares lividus. In life this beetle has a film of air over the underside, so the arms of the fungus would be in air and the pinhead possibly pushing through the m

I'm assuming this is a fungus but not certain. It is on the underside of a water beetle, Helochares lividus. In life this beetle has a film of air over the underside, so the arms of the fungus would be in air and the pinhead possibly pushing through the meniscus into the water. I think there are two more less well developed fungal bodies towards the left of the picture.