kaksisirkkaiset

Could you clarify what you mean by "kaksisirkkaiset"? In Finnish, "sirkka" can refer to crickets/katydids, cicadas, or related groups, and "kaksisirkkaiset" isn't a universally fixed taxonomic term. Do you want a real taxonomic article (for example, about a Finnish usage referring to a specific suborder or group within Orthoptera) or a fictional/colloquial concept? If you confirm the intended meaning, I can draft a concise, neutral wiki-style article under 300 words.