Abstract A new pentasetacine mite Loboquintus subsquamatus n. gen. & n. sp. was
found living under scale-like leaves of 2–3 years old twigs of Cupressus sempervirens in
Montenegro. This mite species possesses a number of morphological features (uncommon
teardrop-shaped body, traits of prosoma, atypical primitive anatomy of the genital apparatus
and morphological traits of immatures) which clearly distinguish it from all other
known eriophyoids. Adults of L. subsquamatus have seta vi situated on the anterior margin
of a uniquely elongate lingua-like thin frontal lobe, three pits on the posterior prodorsal
shield margin, a remarkable tube-like structure in the basal part of gnathosoma, a complicated
three-layered epigynium, spermathecae directed antero-laterad, short spermathecal
tubes and setae eu suppressed in males and possibly expressed in females. External genitalia
of males and females of L. subsquamatus are fundamentally similar. Hypothesized
remnants of coxisterna III or IV (forming a postgenital plate)