Mabulatrichus kumayaensis, Nakamura & Fukumori & Fujikawa, 2010
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publication ID |
https://doi.org/ 10.1051/acarologia/20101988 |
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persistent identifier |
https://treatment.plazi.org/id/03CA8799-FFFC-FFFD-BD88-BB34FF66B8F1 |
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treatment provided by |
Marcus |
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scientific name |
Mabulatrichus kumayaensis |
| status |
sp. nov. |
Mabulatrichus kumayaensis View in CoL sp. nov.
[Japanese name: Kumaya-nokomedani] ( Figs. 12 View FIGURE , 13 View FIGURE and 14 View FIGURE )
Diagnosis — Body length 414 µm; width 229 µm. Numerous notogastral micropores. Rostrum dentate at anterior margin; seven dens small, rounded. Humeral saccule (hu) large. Piriform organ (py) conspicuous. Ten pairs of notogastral setae. Notogaster with marginal line between anterior of setae la. Epimeral setal formula 3-1-3-3. Trochanter IV bearing seta. Heterotridactylous.
Material examined — Holotype (Female) (NSMT-Ac 13594) from point B.
Etymology — After the name of sampling point, Kumaya Cave.
Measurements and body appearance — Body length 414 µm; width 229 µm. Body colour light brown. Whole integument smooth, with numerous notogastral micropores.
Prodorsum — Rostrum dentate at anterior margin; seven dens small, rounded ( Fig. 12A View FIGURE ). A pair of longitudinal ridges convergent, running from bothridia to anterior of setae le. Setae ro (48 µm), le (89 µm) and in (59 µm) spiniform, ciliate throughout length, originating from small apophyses. Bothridia opened antero-laterally. Sensilli (ss) (64 µm) setiform, ciliate throughout length; relative lengths ss ≈ 1.3x ro. Setae ex (15 µm) thin, short, smooth, setiform.
Notogaster — Medially interrupted dorsosejugal scissure directed forwards, ending at level of mid-distance between setae le and in. Humeral region developed, bearing barbed spiniform setae c 2 (36 µm). Humeral saccule (hu) large. Piriform organ (py) conspicuous ( Fig. 12B View FIGURE ). Other nine pairs of notogastral setae except for c 2, thin, smooth, short setiform (8 µm). Lyrifissures ia (16 µm) and im (18 µm) remarkable long, aligned almost perpendicular to notogastral outline; ih and ip transversly aligned; ips obliquely aligned to notogastral outline. Notogaster with marginal line between anterior of setae la ( Fig. 12C View FIGURE ). Notogaster separated medially and overlapping at posterior border ( Fig. 14 View FIGURE ).
Ventral region — Genital aperture (41 µm) almost square in form; anal aperture (69 µm) rectangular; distance (99 µm) between them about 2.4x and 1.4x as long as lengths of genital and anal apertures, respectively. Genito-anal setal formula 4-1-1- 2; all setae smooth, setiform; genital setae (15 µm) about 4x longer than anal (3 µm) and adanal (3 µm) setae, and about 2.5x longer than aggenital setae (6 µm). Setae an 1 and ad 3 absent. Genital setae (g 1) inserted at anterior margines of plates; the others inserted at the mid-ventral line. Setae ag inserted almost at level of posterior margin of genital aperture. Setae ad 1 aligned in postanal position, ad 2 in adanal. Lyrifissures iad located postero-laterally to anterior margin of anal aperture. Sternal ridge and epimeral borders indistinct. Epimeral setal formula 3-1-3-3; setae roughened setiform. Diarthric subcapitulum bearing 3 pairs of setae: a (25 µm), m (35 µm) and h (35 µm); setae barbed; a and m setiform; h spiniform. Custodium sharp, long, extending anteriorly of setae 1 c ( Fig. 13A View FIGURE ).
Legs — Heterotridactylous; median claw inflexed, shorter than lateral ones. Setal formula: I (1-5-2-4-16), II (1-5-2-4-14), III (2-3-1-3-11), IV (1-2- 2-3-10). On tarsus I, famulus ε minute bacilliform, situated lateral to seta ft ’ ( Fig. 13B View FIGURE ). Solenidion ω 1 bacilliform, inserted posterior to famulus. Solenidion ω 1 setiform, situated anterior to ft ’. Solenidion ’ 1 on tibia I originating from apophysis; ’ 2 situated lateral to the base of apophysis of ’ 1.
Remarks — The new species is distinguished from all the species of the genus Mabulatrichus , especially from M. baloghi ( Mahunka, 1993) by the absence of two large incisions between medial and lateral teeth, from M. dentatus Coetzee, 1993 by the obsence of a long epimeral setae la, from M. litoralis Aoki and Hirauchi, 2000 by the presence of rostral dens, conspicuous piriform organ, long dorsoseju-
Acarologia 50(4): 439–477 (2010)
gal scissure, and trochanter IV bearing seta v, and from M. iranicus Akrami and Coetzee, 2007 by having round rostral dens and conspicuous piriform organ.
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