Kleemannia miranda, Mašán, 2017

Masan, Peter, 2017, A revision of the family Ameroseiidae (Acari, Mesostigmata), with some data on Slovak fauna, ZooKeys 704, pp. 1-228 : 1

Kleemannia miranda sp. n.

Figure 4

Type material.

U.S.A.: 1 ♀ (BMNH, holotype) - 16. 2. 1962, Kansas, Douglas County, Lawrence, from tree hole, leg. W. W. Moss; 1 ♀ (BMNH, paratype) - 19. 10. 1955, Maryland, Prince George’s County, Laurel, Patuxent Wildlife Refuge, from nest of Peromyscus sp. ( Rodentia , Cricetidae ), leg. R. O. Drummond.

Diagnosis.

Dorsal shield with 29 pairs of setae (z6 present). Z-setae not reduced in length, at least as long as those in S-setal rows; setae J2 and J4 longest, j1 shortest. Sternal shield with three pairs of sternal setae (st1-st3). Ventrianal shield with two pairs of setae (JV2, JV3); setae JV2 close to anterior margin of the shield. Postgenital soft integument with three pairs of narrow and transverse sclerites.

Description.

Female. Idiosoma suboval, narrowed anteriorly, 350-370 μm long and 220-245 μm wide. Dorsal shield weakly sclerotised, scrobiculate laterally, smooth or delicately reticulate medially and posteromarginally, covering whole dorsal surface, and bearing 29 pairs of setae. Most of dorsal setae similar in length, relatively thin and regularly covered by minute spines; setae z5, z6 and S-setae 40-50 μm long; Z-setae 50-60 μm long; J2 77-81 μm and J4 83-87 μm long; setae j1 shortest, at most 20 μm in length, laterally with prominent thorns. Sternal shield subquadrate, with anterolateral corners well developed between coxae I and II, 68-71 μm in length and width (at level of st2), weakly reticulate on surface, with three pairs of setae (st1-st3). A pair of poroid structures associated with st3 on soft integument close to posterolateral corners of sternal shield. Pseudo-metasternal platelets absent. Metasternal setae (st4) on soft integument. Epigynal shield 86-90 μm wide, oblong, slightly expanded behind genital setae, tongue-shaped, with indistinct reticulate pattern and a pair of genital setae (st5). Three pairs of postgenital sclerites present. Metapodal platelets suboval, relatively small. Peritremes and peritrematal shields normally developed. Ventrianal shield 125-140 μm wide and 100-110 μm long, straight or very slightly concave anteriorly and widely rounded posteriorly, almost dish-shaped, well reticulate on surface, having three circum-anal setae, two pairs of opisthogastric setae and anus in its posteromedial portion. Except for JV5, all ventrally situated setae smooth and needle-like; sternal setae about 25 μm in length, slightly longer than ventral and adanal setae (15-17 μm), and postanal seta (20 μm). Setae JV5 of similar form and length as those on dorsal shield, 46-48 μm long. Epistome with central spine-like process. Setae h1 thickened. Fixed digit of chelicera with four small teeth on proximal masticatory area. Other gnathosomal structures and leg chaetotaxy typical of genus.

Taxonomic notes.

Sternal shield chaetotaxy, with st3 present, is unique and quite unlike any other species in the genus, in which these setae are off the shield, either on soft integument or small pseudo-metasternal platelets.

Etymology.

Derived from the Latin word " mirandus " (strange)-based on unique sternal shield chaetotaxy described in previous paragraph.

Figures

Figure 4. Kleemannia miranda sp. n., female. A Dorsal idiosoma B Ventral idiosoma. Not scaled.