Seashells in the Kalahari?
QBRITTA MARE from Roodepoort writes: I noticed these shells on a plant next to the pool at the Kang Ultra Stop in Botswana. What are they?
AEntomologist DUNCAN MACFADYEN says: This is actually a kind of scale insect belonging to the family Margodidae. It’s a cosmopolitan pest that feeds on a range of plants throughout southern Africa. No mate is required: each insect is a selffertilizing hermaphrodite.