indicating the division of distinct
parts of body wall: the line of junction of elytra in Coleoptera.

Suturiform: an articulation soldered together so that only a slight
impressed line is visible.

Swarming: the concerted departure from a hive of a large number of
worker bees, accompanied by a queen; this forming the nucleus of a
new colony.

Swimmerets: gill or plate-like structures in the aquatic larvae of some
Neuroptera, serving as oars or organs of locomotion.

Swimming paddles: terminal appendages of mosquito pupae.

Swoked: smoky, suffused with gray or blackish.

Sylvan: species inhabiting forests or woodland areas.

Symbiogenesis: the method of origin of social symbiotic relation
among ants and other insects.

Symbiosis: a life relationship existing between different kinds of
animals or plants, or between animals and plants: true symbiosis is
where both parties to the relation benefit: see also parasitism,
commensalism. Among the ants social symbiosis exists in its most
highly developed form and distinctive terms have been proposed for
the various types of relations:

Calobiosis, is that association in which one species, often only the
female, lives in the nest of and at the expense of another species,
either for a time, = temporary - or altogether, = permanent
calacobiosis. {Scanner's note: sic}

Cleptobiosis, is where one species of ant lives in or near the nest of
another, preying upon its larvae or pupae or stealing the food supply.

Dulosis, is that mingling of colonies which owes its origin to the
enslavement of one species by another.

Hamabiosis, is that relation where two species of any insects, one of
which may be an ant, live side by side without obvious motive or
known advantage to one or both.

Lestobiosis, is where the workers of one ant colony "hold up" those of
another species and rob them of the food they are carrying to the nest.

Parabiosis, is where different species of ants form colonies with
inosculating galleries, and have their households strangely
intermingled, but not blended.

Phylacobiosis, is the relation existing between ants and Termites, the
ants living in the doorways of the Termites and functioning as guards.

Synclerobiosis, is an association of two species of ants that usually
inhabit independent colonies, for purposes that are not clearly
understood.

Trophibiosis, is the relationship between ants on the one