1) Arthropod family 2) Family aphididae 3) Small soft-bodied plant lice 
The Aphididae are a very large insect family in the aphid superfamily (Aphidoidea), of the order Hemiptera. Several thousand species are placed in this family, many of which are well known for being serious plant pests. They are also the family of insects containing most plant virus vectors (around 200 known) with the green peach aphid (Myzus pers...
[n] - small soft-bodied plant lice
Aphididae Aphids, blackflies, greenflies; family of over 3,500 species of pear-shaped, soft-bodied insects (Homoptera) which move slowly over their host plants sucking juices and injecting toxic saliva; typically excreting honeydew or secreting wax for protection. Life cycles are complex, commonly involving both parthenogenetic and bisexual reprod...
family Aphididae noun small soft-bodied plant lice