What is Street Creatures?  This is the game I run on Twitter every Friday. I’ve
collected all the past quizzes here in one place so you can either relive them, or play
them for the first time.

How does it work?  Provided are four, seemingly unrelated clues, that are all
connected by a wild organism that can be found in a city. Look at the four clues,
do some research, and when you think you’ve figured it out, click on ‘Answer’
to reveal what connects the clues, and how they are connected.

Follow me on Twitter to play #StreetCreatures live every Friday at 9am PST.

Quiz #78 Clues

Genital shield
Surface tension

Answer (Don't click until you've solved it)

Water Strider (Gerridae)

Genital shield:

Male water striders in the genus Gerris are prevented from mating by the females genital shield. While the male rides on her back, he entices her to mate by strumming the water to ATTRACT predators. She has to either mate or risk being eaten.


Water striders are predators and will eat anything at the surface of the water, either above or below, including mosquito larvae, which is a favorite food.


Not only are water striders predators, they show no distinction for their own family and will readily eat one another…including their own offspring.

Surface tension:

How do they skate across the surface of the water? They have hairs on their legs that stay dry and prevent them from puncturing the surface tension of the water.
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