Zerconella (Metazercon) lobata Ujvári, 2010, sp. n.

• Main Author: Ujvári, Zsolt
• Format: Text
• Language: unknown
• Published: Zenodo 2010
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Arachnida; Mesostigmata; Zerconidae; Zerconella; Zerconella lobata; Mite; ren
• Online Access: https://dx.doi.org/10.5281/zenodo.6195957; https://zenodo.org/record/6195957

Zerconella ( Metazercon ) lobata sp. n. (Figs 11–20, 25) Type material. Holotype female (AS- 876), Taiwan, Nantou county, Kunyang, logging road, primary broadleaved forest, from leaf-litter, 24 o06.705'N, 121 o 11.977 'E, 2200 m a.s.l., 22 May 2008., leg. L. Dányi, Z. Korsós & E. Lazányi.(in the Collection of Soil Zoology of the Hungarian Natural History Museum, Budapest). Paratypes: 2 females (AS- 905), Taiwan, Miaoli County, Taian, township, Shei-Pa National Park, Kuanwu, Yulun Trail, 24 ° 30.002 'N, 121 ° 6.434 'E, 2200 m a.s.l., primary broad-leaved forest, leaf-litter, 20 October 2009, leg. L. Dányi & E. Lazányi; 1 female (AS- 917), Taiwan, Nantou County, Ren-ai, township, Taroko N.P., Dayuling, Western slope of Mt. Maomu, Mt. Bilu Trail, 24 ° 11.095 'N, 121 ° 18.615 ' E, 2580 m a.s.l., primary broad-leaved forest with stream, moss from trunks, 11 October 2009, leg. L. Dányi & E. Lazányi; 35 females, 2 males, 1 deutonymph (AS- 932), Taiwan, Hualien County, Xiulin, township, Taroko N.P., Dayuling, Eastern slope of Mt. Maomu, 24 ° 10.881 'N, 121 ° 19.408 'E, 2498 m a.s.l., disturbed secondary mixed forest, leaf-litter, 11 October 2009, leg. L. Dányi & E. Lazányi. Diagnosis. Dorsal setae rarely, very finely pilose or smooth. Setae z 3, r 3, s 5 and S 3–5 very long, extending beyond margin of idiosoma by more than half of their length. Opisthonotal setae relatively long, thickened, apically tapering. Setae J 5 situated medially to J 4. Margin of opisthonotum with seven pairs of setae. Central surface of opisthonotum covered by alveolar pits. Single pair of well-sclerotised dorsal cavities present, covered by large, posterocentral lobes which have strongly sclerotised, continuous posterior margin running arcuately between setae S 5. Description. Female . Length of idiosoma: 265–280 μm; width 175–195 μm (n= 39). Dorsum (Figs 11, 15). Podonotum with 20 pairs of finely pilose setae (Fig. 16). Setae z 3 and s 5 very long (48–65 μm), apically tapering, reaching beyond margin of idiosoma by more than half of their length. Other podonotal setae similar in shape, setiform (16–36 μm). Setae j 6 reaching beyond bases of J 2, z 6 reaching beyond insertions of Z 1. Gland openings gdj 2 (po 1) situated below line connecting insertions of j 3 and s 1, remaining podonotal gland pores not conspicuous. Sculpturing pattern of podonotum squamous, posteromedial surface with small, alveolar pits. Opisthonotum with 20 pairs of elongate, apically tapering, finely pilose setae. Setae J 1 absent. Setae J 3 reaching beyond insertions of J 4 and J 5, 1.5– 2 times as long as J 2. Setae J 5 situated medially to J 4, shorter than J 3–4. Setae Z 1 shorter than any other opisthonotal setae. Setae Z 2–5 similar in shape and length to central J-setae. S 2 similar in shape and length to J 2. Setae S 3–5 (Fig. 20) very long, reaching beyond margin of idiosoma, apically tapering. Marginal setae uniform, similar to that of podonotal margin. Size of opisthonotal setae and distance between their bases according to Table 1. Only exterior pair of dorsal cavities present, which large, strongly sclerotised, with smooth margins and axes converging posteriorly. Two large, lobe-like structures (Figs 17–18) emerging on posterior part of opisthonotum towards the caudal margin of idiosoma, covering dorsal cavities and bases of setae JV 5. These lobe-like structures have a continuous, strongly sclerotised posterior margin expanding between setae S 5. Small mound can be observed posteromedially to dorsal cavities. Gland openings gdJ 4 (Po 3) situated on a line connecting Z 4 and Z 5, near caudolateral margin of characteristic lobes, others not conspicuous. Marginal serration of dorsal idiosoma obtuse. Central and lateral surface of opisthonotum covered by alveolar pits. Ve n te r (Fig. 12). Peritrematal shields truncated at level of fourth pair of coxae, between level of S 1 -R 1, separated by triangular slit from podonotal shield, and ornamented by longitudinal fissures. Peritremes extremely short. Both peritrematal setae very finely pilose, r 3 six times as long as r 1. Sternal shield 46–50 μm long, 37–40 μm wide at level of setae st 2, posterior margin slightly concave. Adgenital platelets small, bearing 2 gland-openings of gv 2. One pair of post-genital sclerites often present. Ventri-anal shield with 7 pairs of preanal setae, posteriorly fused to opisthonotal shield. All ventral setae smooth or finely pilose. Ventri-anal pores situated near adanal setae, in posterolateral direction. Anal valves with vestigial euanal setae. Sternal shield with reticulate ornamentation, ventri-anal shield covered by tile-like pattern. Male (Figs 13–14). Length of idiosoma: 210–215 μm; width 151–154 μm (n= 2). Dorsal chaetotaxy, adenotaxy, poroidotaxy and sculpturing pattern similar to that of female. Length of opisthonotal setae and distance between their bases according to Table 1. Sternogenital shield with five pairs of setae (st 1–5). Genital opening situated behind level of setae st 3. Posterior ends of peritrematal shields free, truncated at level of S 1. Ƥ 3 DN Ƥ 3 DN Ƥ 3 DN Z 1 16 22 28 S 1 30 22 23 Z 1 -Z 2 33 21 30 S 1 - S 2 24 17 20 J 2 32 22 25 Z 2 45 29 36 S 2 33 22 31 J 2 -J 3 30 20 25 Z 2 -Z 3 30 17 18 S 2 - S 3 20 17 20 J 3 53 40 45 Z 3 55 49 67 S 3 63 39 30 J 3 -J 4 25 15 18 Z 3 -Z 4 15 15 16 S 3 - S 4 33 24 28 J 4 45 28 39 Z 4 47 38 48 S 4 69 52 72 J 4 -J 5 23 17 17 Z 4 -Z 5 48 41 38 S 4 - S 5 33 23 25 J 5 38 24 41 Z 5 50 41 46 S 5 69 60 77 Deutonymph (Fig. 19). Length of idiosoma: 247 μm, width 164 μm (n= 1). Dorsal chaetotaxy, adenotaxy and poroidotaxy similar to that of adults, sculpturing pattern on podonotum and lateral surface of opisthonotum weakly developed. Shape of posterodorsal lobes as in Fig. 19. Length of opisthonotal setae and distance between their bases according to Table 1. Etymology. The name of the new species refers to the characteristic caudodorsal lobes. Remarks. The new species is closely related to Zerconella ( Metazercon ) athiasae (Błaszak, 1975) and Zerconella ( Metazercon ) rafalskii (Błaszak et al ., 1997) by having only two dorsal cavities. Females of the three species can be distinguished by the following features. In Zerconella ( Metazercon ) lobata , setae J 5 are situated medially to J 4, setae J 1 are absent, the sculpturing pattern on the lateral parts of the opisthonotum is weakly developed, the surface between the J-series setae is covered by large, alveolar depressions, and a well sclerotised arcuate margin runs between setae S 5, laterally forming two caudodorsal lobes; in Zerconella ( Metazercon ) athiasae , setae J 5 are situated posterolaterally to J 4, setae J 1 are present, the anterior and lateral surface of the opisthonotum is covered by a tile-like pattern, the anteromedian surface between the J-series setae has reticulate ornamentation, spot-like depression can only be found between setae J 4 and J 5, on the caudodorsal part three separate, well sclerotised mounds can be observed; in Zerconella ( Metazercon ) rafalskii setae J 5 are situated posteromedially to J 4, setae J 1 are present, the sculpturing pattern on lateral parts of opisthonotum is weakly developed, the surface between the J-series setae is covered by small, spotlike depressions, and on the caudodorsal part three separate, well sclerotised mounds can be observed. : Published as part of Ujvári, Zsolt, 2010, Zerconella Willmann, 1953, a forgotten group of Zerconidae (Acari: Mesostigmata), pp. 33-47 in Zootaxa 2558 on pages 39-45, DOI: 10.5281/zenodo.196960 : {"references": ["Blaszak, C., Kaczmarek, S. & Lee, J. H. (1997) Metazercon rafalskii sp. nov., a new species of mite from South Korea (Acari, Gamasida, Zerconidae). Genus, 8, 9 - 14."]}