Apparently they are taking D. mel alright. From the four species above, i think Tropidomantis tenera has the smallest front legs and therefore more challenging to handle fruit flies. I have used both springtails and small fruit flies as feeders. Both Hestiasula and Pachymantis have no problem with fruit flies, due to the larger front legs, although they are not as long as Tropidomantis hatchlings.Here are more pics.thanks Yen for the added info. so if they are not eating mels, then what are you feeding them? are the Pachymantis Bicingulata that small that mels were not your first choice of feeders?
Harry