Complex sentence: This may be correct, but as far as can be told they are a closely related but well distinct lineage of Tenebrionidae; conversely, the Opatrini are sometimes elevated to familial rank as Opatrinae.
Split into simpler sentences: This may be correct, but as far as can be told they are a closely related but well distinct lineage of Tenebrionidae. The Opatrini are sometimes elevated to familial rank as Opatrinae.