Proctogastrolaelaps McGraw & Farrier

De Moraes, Gilberto J., Britto, Erika P. J., Mineiro, Jefferson L. De C. & Halliday, Bruce, 2016, Catalogue of the mite families Ascidae Voigts & Oudemans, Blattisociidae Garman and Melicharidae Hirschmann (Acari: Mesostigmata), Zootaxa 4112 (1), pp. 1-299 : 51-52

Proctogastrolaelaps McGraw & Farrier

FEMALE

Gnathosoma. Anterior margin of epistome convex, mostly smooth. Seta h3 longer than h1, h2 and pc, which are similar in length; insertion of h2 slightly anterior to slightly posterior to insertion of h3. Inner palp trochanter seta about as long as outer seta, not elongate. Deutosternum narrow, transverse rows of denticles not visible. Corniculi about twice as long as their basal widths, with pointed tips, well separated from each other, slightly convergent distally. Palp tarsal apotele two-tined. Fixed cheliceral digit with two teeth in addition to apical tooth and expanded membranous lobe instead of setiform pilus dentilis; movable digit with one tooth in addition to apical tooth and a ventral mucro near base.

Idiosoma. Elongate. Dorsum: podonotal and opisthonotal shields fused, mostly smooth, with light reticulation on lateral and posterior areas, without lateral incisions at area of fusion, transverse and nearly straight lines or delineated strip along lateral margins; anterior end of dorsal shield not strongly deflexed. No supernumerary setae on dorsal shield or on unsclerotised lateral cuticle. Podonotal region of shield with 23 pairs of setae, including r3, which is slightly longer and more perpendicular to shield margin than neighbouring setae. Opisthonotal region of shield with 21 pairs of setae. Unsclerotised lateral cuticle with a pair of setae (UR1). Dorsal and lateral setae of idiosoma of similar lengths, short (except Z5, longer), acicular and smooth. Vent er: presternal plates indistinct. Sternal shield with three pairs of setae of similar lengths (st1–st3); st2 slightly closer to st3 than to st1; posterior shield margin concave. Third pair of sternal lyrifissures (iv3) and st4 inserted on metasternal plates. Genital shield not wide enough to include iv5, but including st5; posteriorly truncate to slightly convex. Two pairs of metapodal plates, the anterior rounded and the posterior elongate. No platelets between genital and ventral shields. Opisthogaster with 11 pairs of setae in addition to circumanal setae, of which four pairs on a subrectangular (longer axis transverse) ventral shield; anal shield rounded; para-anal setae inserted slightly anterior to posterior anal margin, and about as long as post-anal seta. Anal opening not enlarged, about 1/3 of shield length, in shield centre. Anterior section of endopodal shield fused with sternal shield; section behind sternal shield corresponding to a well developed, undulating platelet beside coxae III–IV. Exopodal shield extending along coxae II–IV.

Peritreme. Extending from stigma to level of s1, about as wide as stigma. Peritrematic shield very narrow, fused with dorsal shield at level of s2 and fused through a narrow bridge with exopodal shield beside coxa IV.

Legs. Setation of legs I–IV, genu: 13, 11, 9, 9; tibia: 13, 10, 8, 10. Leg II not distinctly different from other legs. Legs without macrosetae.

Spermathecal apparatus. Not distinct in holotype of the only species known in the genus.

MALE

Gnathosoma similar to female, but fixed cheliceral digit with three teeth in addition to apical tooth and movable cheliceral digit edentate; spermatodactyl simple, about as long as movable digit, directed forward at the base, slightly curved downward and tapering near apex. Dorsal shield ornamentation similar to female; without UR setae. Without presternal platelets. Sternogenital shield with five pairs of setae (st1–st5) and three pairs of lyrifissures (iv1–iv3); anterior margin indistinct and posterior margin slightly undulate. Endopodal shield totally fused with sternogenital shield. Without metapodal shields. Ventrianal shields wide, subtriangular, extending to area occupied by metapodal plates; not fused with exopodal or dorsal shields; bearing seven of the ten pairs of opisthogastric setae in addition to circumanal setae. Peritrematic shield fused with exopodal shield by a narrow bridge beside coxa IV and extending around its posterior margin. Leg chaetotaxy and other leg structures as in female.