Eupelops kumayaensis, Nakamura & Fukumori & Fujikawa, 2010
|
publication ID |
https://doi.org/ 10.1051/acarologia/20101988 |
|
persistent identifier |
https://treatment.plazi.org/id/03CA8799-FFE1-FFF9-BED5-BF62FE78BC85 |
|
treatment provided by |
Marcus |
|
scientific name |
Eupelops kumayaensis |
| status |
sp. nov. |
Eupelops kumayaensis View in CoL sp. nov.
[Japanese name: Kumaya-enmadani] ( Figs. 10 View FIGURE and 11 View FIGURE )
Diagnosis — Body length 607 µm; width 486 µm. Tutorium with sharply pointed apex, without dens. Anterior notogastral tectum broadly concave. Ten pairs of notogastral setae bacilliform, spinose. Four pairs of round porose areas. Genito-anal setal formula: 6-1-2-[2, 1]. Chelicerae bearing two Trägårdh’s organs; Tg1 longer than Tg2. Heterotridactylous.
Material examined — Holotype (Female) (NSMT-Ac 13592) from point E; 1 paratype (NSMT- Ac 13593): same data as holotype.
Etymology — After the name of sampling point, Kumaya Cave.
Measurements and body appearance — Body length 607 µm; width 486 µm. Body colour dark brown. Whole integument except for hypostoma bearing dark granules; hypostome laterally-costate.
Prodorsum — Rostrum protruding with rounded tip ( Fig. 10A View FIGURE ). Setae ro weakly expanded distally, spiculate throughout length, inserted on lateral margins at base of free tip of tutorium, extending for short distance anterior of rostral margin. Tutorium with sharply pointed apex, without dens ( Fig. 11B View FIGURE ). Tips of lamellar cuspis reaching two third-distance along prodorsum, anterodorsally arising lamellar setae. Space between cuspis forming parabola-shape. Setae le bacilliform, spiculate throughout length, reaching anterior margin of rostrum. Setae in large phylliform, spiculate throughout length, reaching anterior margin of rostrum ( Fig. 11A View FIGURE ). Bothridia opening antero-laterally. Sensilli (ss) bowing, expanded distally without narrower apex, spiculate throughout length. Setae ex short, smooth spiniform. Relative lengths of prodorsal setae in (230 µm) ≈ 2.5x [ro ≈ le ≈ ss (92 µm) ≈ 8x ex (11.5 µm)].
Notogaster — Anterior notogastral tectum broadly concave, projecting further anteriorly than anterior margin of movable pteromorphs, covering basal part of prodorsum ( Figs. 10A and C View FIGURE ). Large oval lenticulus visible. Ten pairs of notogastral setae bacilliform, spinose throughout length, variable in length; shortest c 2 ( Fig. 10D View FIGURE ). Four pairs of round porose areas; Aa located postero-laterally to setae c 2; A1, A2, A3 contiguous to lm, lp, h 2, respectively. Setae h 3 laterally inserted mid-distance between A2 and A3.Lyrifissures ia located anterior to la; im aligned obliquely antero-laterally to A2. Relative distances between notogastral setae in central part of notogaster: (c 2 – c 2) (262 µm)>(lp – lp) (235 µm) ≈ (h 2 – h 2)>(lm – lm) (162 µm)>(h 1 – h 1) (108 µm).
Ventral region — Genital and anal apertures roughly circular in shape, almost equal (77 µm) in length; distance (130 µm) between them 1.7x as long as length of each aperture ( Fig.10B View FIGURE ). Genito-anal setal formula: 6-1-2-[2, 1]; all setae short, smooth setiform ( Fig. 10D View FIGURE ); anal setae variable in number. Setae g 1 and g 2 inserted at anterior margines of plates; g 6 at posterior margines. Setae ag inserted lateroposteriorly to genital aperture. Setae an 1 and an 2 inserted near anterior and posterior margin of plates, respectively. Setae ad 1 and ad 2 aligned in postanal position; ad 3 in adanal. Lyrifissures iad located antero-laterally to anterior margin of anal aperture, along outline of aperture. Sternal ridge indistinct. Epimeral borders bo. 1-3, sj distinct. Epimeral setal formula: 3-1-3-3; setae short, smooth setiform. Relative lengths: 1a (18 µm)> g (17 µm)> ag (15 µm)> an (12 µm)> ad (10 µm). Pedipalpal setal formula: 0-2- 1-3-9[1]; solenidion on tarsus short, not extending in front of tarsal anterior margin ( Fig. 10E View FIGURE ). Suctorial subcapitulum bearing 3 pairs of setae: a (32 µm), m (32 µm) and h (17 µm); all setae smooth; a, m spiniform; h setiform ( Fig. 11D View FIGURE ). Chelicerae bearing two Trägårdh’s organs; Tg1 longer than Tg2 ( Fig. 11C View FIGURE ). Setae cha, chb smooth spiniform; cha long, chb short.
Legs — Heterotridactylous; claws dentate dorsally. Setal formula: I (1-5-3-4-19), II (1-5-3-4-16), III (2-3-1-3-15), IV (1-2-2-4-12). All segment except for femur IV and all trochantera bearing thick, spiculate lateral setae ( Fig. 11E View FIGURE ). Carina on every segment indistinct. Solenidiotaxy: I (1-2-2), II (1-1-2), III (1-1-0), IV (0-0-0). Solenidion absent on tibiae IV ( Fig. 11G View FIGURE ). On tarsus I, famulus ε long setiform, situated posterior to solenidia ω 1; ω 2 posteriolaterally to ω 1; ω 1 bacilliform and ω 2 setiform; seta ft ’ contiguous and posterior to ω 1 between ω 1 and ω 2 ( Fig. 11F View FIGURE ). Solenidion ’ 1 on tibia I originating from apophysis; ’ 2 lateral to ’ 1.
Remarks — As far as the authors know, the new species has concave anterior tectum of the notogaster as it is also observed in Eupelops bilobus ( Sellnick, 1928) ( Sellnick, 1929) and E. incompletes Mahunka, 1978 . However, the new species is distinguished from these latter species by form and length of prodorsal setae, insertion of notogastral setae h 3, and chelicera with two Trägårdh’s organs. E. acromios ( Hermann, 1804) ( Grandjean, 1936) and E. kumaensis Fujikawa, 2009 have two Trägårdh’s organs, however they differ from the new species in form of notogastral anterior tectum and notogastral setae, and situation of Aa.
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.