Consider: The wood wasp burrows into the pine tree by means of an ovipositor ​ — a needlelike tube with two interlocking shafts, or “valves, ” each of which is covered with backward - facing teeth.
Mõtteainet. Männi - puiduvaablane saeb männipuitu käigu, kasutades munetit – nõelataolist toru kahe põimunud poolmega, millest kumbki on rasplitaoliselt hammasjas.