mother hen: a person who cares for the needs of others (especially in an overprotective or interfering way)
whole: an assemblage of parts that is regarded as a single entity
superclass myriapoda: used in some classifications to encompass the millipedes (Diplopoda) and centipedes (Chilopoda); formerly a large taxon including also the Pauropoda and Symphyla; the term Myriapoda now usually used synonymously with Diplopoda and limited to the millipedes