Phytoseiulus—Key feature pages

 

Anal/ventrianal shield

A simplesimple:
unadorned; simple setae are needle-like and without hairs or pectins.
anal shield bearing only the 3 circumanal setaecircumanal setae:
in Mesostigmata, the three setae (postanal and pair of peranal) setae surrounding the anal opening.
(a pair of paranal setaeparanal setae:
(also adanal setae) the pair of seta inserted laterad the anal opening in the Mesostigmata; usually designated pa or PAR; the anterior (= h3) and posterior (= h2) para-anals in the Pritchard & Baker System.
[pa] and an unpaired postanal setapostanal seta:
the unpaired median seta inserted posterior to the anal opening in the Mesostigmata; usually designated po or POS.
[po]) is present in Phytoseiulus longipes and P. persimilis. Phytoseiulus fragariae has a well developed ventrianal shieldventrianal shield:
in Mesostigmata, a ventral shield bearing the anal opening, circum anal setae, and one or more pairs of ventral setae or pores (lyrifissures) [see anal shield]; maybe rather narrow or very broad and covering most of the gaster.
bearing a pair of ventral setaeventral setae:
in the Lindquist-Evans system used in the Mesostigmata, the ventral region has up to three longitudinal rows (JvZvLv) with 1-5 transverse row designations.
(JV2) as well as the circumanal setaecircumanal setae:
in Mesostigmata, the three setae (postanal and pair of peranal) setae surrounding the anal opening.
. A more irregular ventrianal shieldventrianal shield:
in Mesostigmata, a ventral shield bearing the anal opening, circum anal setae, and one or more pairs of ventral setae or pores (lyrifissures) [see anal shield]; maybe rather narrow or very broad and covering most of the gaster.
bearing setae JV2 is usually present in P. macropilis, but in some individuals one or both setae JV2 may be in the soft cuticle.