Complex sentence: The wings are transparent, with black or sometimes brown veins, and a brown-black patch at the base of apical cells 2 and 3, these patches are sometimes fused into a continuous zigzag infuscation (dark brown to black discoloration).
Split into simpler sentences: The wings are transparent with black or sometimes brown veins, and a brown-black patch at the base of apical cells 2 and 3. These patches are sometimes fused into a continuous zigzag infuscation (dark brown to black discoloration).