x1 is a cockroach/orthopteran/termite of order/species/breed x2.
Also grasshopper (= pipyjalra); cricket (= sagjalra); locust, termite (= mantyjalra or mudyctijalra). (Orthoptera includes grasshoppers, crickets, etc; termites are a closely-related non-Orthoptera, more akin to cockroaches than to e.g. ants); See also cinki, civla, manti.