Sentence 1: This large distinctive fly has three pairs of yellow comma markings ( lunules ) on the abdomen , these are white on `` Scaeva selenitica '' .
Sentence 2: This large distinctive fly has three pairs of yellow comma - markings ( steady ) on the belly , these are white on `` Scaeva selenitica '' .
Question: Do Sentence 1 and Sentence 2 express the same meaning? Yes or No?