Aspar tamalpaisensis, Ujvári, 2012

Ujvári, Zs., 2012, Review Of The American Genera Aspar Halašková, 1977 And Blaszakzercon Kemal & Koçak, 2009 (Acari, Mesostigmata, Zerconidae) With Description Of Three New Species, Acta Zoologica Academiae Scientiarum Hungaricae 58 (3), pp. 275-296 : 281-283

Aspar tamalpaisensis sp. n.

( Figs 3–4 , 13–20 )

Type material. Female holotype: USA, California, San Fransisco, Golden Gate , 19.09.1981, coll. J. KISS (É-Am-086) ; three female paratypes: USA, California, Mount Tamalpais , 1000 m a.s.l., pine forest, mosses and lichens among rocks, 12.01.1985, coll. J. KISS (É-Am-089) ( Fig. 44 ) . The type material is deposited in HNHM .

Diagnosis. Setae j1, r3 and Z5 elongate, brush-like, plumose, r1–2 short, plumose, the remaining podonotal and opisthonotal setae thick, blunt, with serrate margins (see Figs 15–18 ). Glands Po2 situated posterolaterally to Z2. The surface between submarginal and central setal series of opisthonotum with granulate ornamentation.

Description. Female. Length of idiosoma: 339–350 µm (346 µm); width: 242–247 µm (245 µm) (n = 4).

Dorsal side ( Fig. 3 ). Podonotum with 20 pairs of setae, j1–6, z2–6, s1–6 and r4–5 inserted on podonotal shield, r1–3 inserted on peritrematal shields. Setae j1 and r3 elongate, brush-like, plumose, r1–2 short, plumose. The remaining podonotal setae unifrom, thick, blunt, with serrate margins. Glands gds1 (po1) situated posteriorly to s1; gdj4 (po2) situated medially to z4; gds4 (po3) medially to line connecting s4 and s5, in equidistant position. The surface of podonotum covered by irregular, granulate pattern. Central muscle scares behind setae j5 with strongly sclerotized posterior margins.

Opisthonotum with 21 pairs of setae, J1–5, Z1–5, S1–5, R1–6. Opisthonotal setae of similar appearance, thick, blunt, with serrate margins, except Z5 which brush-like, plumose ( Fig. 19 ). Setae J1–4, Z3–4, J5 and Z5 constitute a central series, Z1, S2, Z2 and S3–5 constitute a submarginal series. Row of setae J1–4 parallel, behind these setae, row of Z3–4, J5 and Z5 posteriorly divergent. Length of opisthonotal setae and distances between their insertions as in Table 2. Glands gdZ1 (Po1) situated medially to insertions of Z1; gdS2 (Po2) posterolaterally to Z2; gdZ3 (Po3) laterally to line connecting J4 and Z3; gdS5 (Po4) posteriorly to S5. Marginal serration shallow and obtuse. Whole surface of opisthonotum covered by dense, granulate pattern. Dorsal cavities not conspicuous.

Ventral side ( Fig. 4 ). Shape of peritrematal shields, peritremes and peritrematal setae typical for the genus. Posterolateral tips of peritrematal shields reaching beyond insertions of R3. Peritrematal shields covered by longitudinal, serrate lines. Sternal shield weakly sclerotized, 55 µm long and 39 µm wide at the level of setae st2, with approximately straight posterior margin; its ornamentation not conspicuous. Genital shield relatively narrow. Adgenital glands gv2 with a 1–2 openings, situated on adgenital platelets. Ventrianal chaetotaxy complete, setae Zv1 present. Setae Jv1–3 and Zv1 smooth, pointed and needle-like. Zv2–3 thicker and pointed, Zv4, Jv4–5 ( Fig. 20 ) and adanal setae elongate, similar in appearance to opisthonotal setae. Postanal seta short, similar in to Zv2–3. Anal valves with vestigial euanal setae. Glands gv3 situated anterolaterally to adanal setae. Ventrianal shield covered by a web of serrate-undulate lines and granulate pattern posterolaterally.

Gnathosoma. Situation of hypostomal and subcapitular setae typical for the family. Setae h1–2 similar in appearance, elongate, needle-like. Setae h3 shorter than h1–2, needle-like, h4 somewhat longer than previous setae, serrate. Corniculi horn-like, internal malae with a pair of bifurcate anterocentral branches and with serrate margins. Chelicerae relatively stout, fixed digit with 6 teeth, movable digit with 4–5 teeth. Epistome ( Figs 13–14 ) typical for the genus Aspar , of Parazercon - type (see UJVÁRI 2011 b).

Male and immature stages. Unknown.

Etymology. The new species is named after one of its type-localities, Mount Tamalpais.

Differential diagnosis. The three Aspar species can be distinguished according to Table 3.

Figures

Fig 44. Occurrences of Aspar and Blaszakzercon species in North America

Figs 1–4. Females of Aspar species: 1 = A. opisthoisotrichus sp. n., dorsal view, 2 = A. opisthoisotrichus sp. n., ventral view, 3 = A. tamalpaisensissp.n., dorsal view, 4 = A.tamalpaisensis sp. n., ven-

Figs 5–20. Structures of Aspar species (5–12: A. opisthoisotrichus sp. n., 13–20: A. tamalpaisensis sp. n.): 5–6 = epistomes, 7 = seta z6, 8 = seta s5, 9 = seta J1, 10 = seta R1, 11 = seta Z5, 12 = seta Jv5, 13–14 = epistomes, 15 = seta z6, 16 = seta s5, 17 = seta J1, 18 = seta R1, 19 = seta Z5, 20 = seta Jv5