Relevant part
Stellate scale is also a known pest of Schefflera plants. Wash foliage with warm soapy water, try not to get any in the pot. You may have to treat multiple times. Imdacloprid (Bonide Systemic) should also be effective as it’s considered a soft bodied scale.
Same in German (Seeigel). Though I wondered what an “urchin” is since I learned the word. So still a TIL.