Won't completely rule out D. lanceolata too. But nymph look very different.D. lanceolata oothDidimocorypha lanceolata
source: http://www.mantisonl...ndex.php?lan=en goto ooth pics , great reference site
If your hatchling has pointed eyes like below Paul, then you have something else, but likely your oothecae are O. dumonti.