holothoracic
adjective
holo·thoracic
"
: having the three parts of the thorax closely united
holothoracic insects
compare schizothoracic 
Word History
Etymology
hol- + thorac- + -ic
- master-hand
- master-ring
- master-slave manipulator
- master-tailor
- masterates
- masterbatch
- masterdom
- masterdoms
- mastered
- masterer
- masterest
- masterful
- masterfully
- masterfulness
- masterfulnesses
- masterhood
- masteries
- mastering
- masterings
- masterless
- masterlessness
- masterlier
- masterliest
- masterlike
- masterliness