Kleemannia dolichochaeta, 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 dolichochaeta sp. n.

Figure 3 , Plate 38

Type material.

Spain: 1 ♀ (IZSAV, holotype) - 18. 9. 2005, Balearic Islands, Mallorca, Serra de Tramuntana, Coll de Sa Bataia, side of Puig de Massanella Mount, forest soil detritus, leg. I. Országh.

Diagnosis.

Dorsal shield with 28 pairs of setae (z6 absent); setae relatively narrow, sword-shaped. Setae j5 and j6 conspicuously lengthened, subequal to J2 and J4, and with tips reaching beyond bases of j6 and J2, respectively. Ventrianal shield with two pairs of opisthogastric setae (JV2, JV3); setae JV2 close to anterior margin of the shield. Setae JV4 present.

Description.

Female. Idiosoma suboval, widened medially and narrowed anteriorly, 385 μm long and 255 μm wide. Dorsal shield normally sclerotised, evenly and entirely reticulate, with several pairs of very shallow and indistinct depressions on anterior surface, covering whole dorsal surface, and bearing 28 pairs of setae. Dorsal setae spatulate, with parallel lateral margins and central longitudinal rib; setal margins smooth or serrate. Setae in central rows longer (up to 100 μm) than those in submarginal (60-70 μm) and marginal rows (50-60 μm). Setae j5 and j6 conspicuously lengthened, subequal to J2 and J4, longer than distance between their bases and bases of j6 and J2, respectively. Setae J2 with tips reaching beyond bases of J4, and setae J4 reaching beyond posterior margin of idiosoma. Setae j1 relatively short, 19-22 μm long, with spines on lateral margins. The length of some selected dorsal setae as follows: j4 50-55 μm, j5 and j6 77-85 μm, J2 90-95 μm, J4 93-100 μm, z5 68-73 μm. Sternal shield subquadrate, with anterolateral corners between coxae I and II, 72 μm in length and width (at level of st2), reticulate, with two pairs of setae (st1, st2). Pseudo-metasternal platelets present, relatively large, subcircular, each bearing a seta (st3) and poroid structure. Metasternal setae (st4) on soft integument. Epigynal shield relatively shorter and wider, 98 μm in width, slightly expanded behind genital setae, almost trapezoidal, with reticulate pattern and a pair of genital setae (st5). Three pairs of narrow and transverse postgenital sclerites present. Metapodal platelets suboval. Peritremes and peritrematal shields normally developed. Six pairs of opisthogastric setae present (JV4 expressed). Ventrianal shield 143 μm wide and 123 μm long, with medial anterior margin moderately concave and posterior margin widely rounded, almost pentagonal, well reticulate, having three circum-anal setae and two pairs of opisthogastric setae. Except for JV5, all ventrally situated setae smooth and needle-like; sternal setae 21-24 μm in length, slightly longer than opisthogastric and adanal setae (16-18 μm), and postanal seta (23 μm). Setae JV5 of similar form and length as those on dorsal shield, 62-66 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.

Etymology.

The name is derived from the Greek words " dolichos " (long) and " chaete " (bristle), and it expresses one of the most important features of the species-the dorsal shield bears the longest setae among the known members of the subgenus Primoseius , especially in its anterior medial portion.

Figures

Figure 3. Kleemannia dolichochaeta sp. n., female. A Dorsal idiosoma B Ventral idiosoma. Not scaled.

Plate 38. Kleemannia dolichochaeta, female (holotype, from Spain), dorsal idiosoma.