Identifying pesky larva? I've got some garden pests I requirement to identify. They are small...

I've got some garden pests I requirement to identify. They are small black caterpillar type insects that congregate in excess of 50+ and systematically chomp through a plant one leaf at a time. After the reality, there is a skeleton of the previous branch structure remaining. If it's any help I live within Texas. I'd like to use a homemade life deterrent, rather than a broad base insecticide. Therefore, identification is form of important.
Most insects and especially larve enjoy specific tastes you don't utter what they are eating.
I own provided some links with photos to lend a hand you find it.
INSECTS THAT EAT FOLIAGE AND/OR FRUITS OF PLANTS LEAVING VISIBLE SIGNS OF DAMAGE

http://entowww.tamu.edu/extension/answer...
http://www.insectscience.org/6.09/
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Below is probably the best place to look you'll have to navigate the links for photos.
Texas A&M University Department of Entomology
Insect Answers
Insect Help Publications
Common Texas Insects
Insect Identification
http://insects.tamu.edu/extension/inscta...
Common Texas Insects
http://insects.tamu.edu/images/insects/c...
click on photo
http://insects.tamu.edu/imagegallery/
their invading and infesting your garden

you'll want to get rid of them back they get rid of you
Answers:    Could okay be a species of Black sawfly larvae..'.Pyrethrum 'should do the work...soap and garlic spray otherwise I guess.
I've get them too. The egg mass looks like blue-grey mold. Easy to smash and smear beside your nekkid hands. Hatch is fundamentally small, ditto easy to smash. Little buggars!