Trichouropoda aspera, Kontschán, Jenő & Starý, Josef, 2011

Kontschán, Jenő & Starý, Josef, 2011, Uropodina species from Vietnam (Acari: Mesostigmata), Zootaxa 2807, pp. 1-28: 7-9

publication ID

http://doi.org/ 10.5281/zenodo.202067

publication LSID

lsid:zoobank.org:pub:672AF661-B804-4079-A148-730E04DA3019

DOI

http://doi.org/10.5281/zenodo.5619547

persistent identifier

http://treatment.plazi.org/id/9C3B2D30-FF92-FFDC-D4CE-F477B223FDB7

treatment provided by

Plazi

scientific name

Trichouropoda aspera
status

sp. nov.

Trichouropoda aspera   sp. nov.

( Figs 13–20 View FIGURES 13 – 20 )

Material examined. Holotype. Female ( HNHM), Vietnam, Ha Tinh Prov., Vu Quang Nat Res. and Distr., along Khecong River, at Ngam Tay du ford lowland riverine, moss, 21 May 2002. T. Pócs coll. Paratypes. Two males ( HNHM), locality and date same as for holotype. One male in alcohol ( HNHM), one male on slide ( HNHM) and one male in alcohol ( ISB), Vietnam, Tam Dao, secondary pine forest, litter sample, 970 m, 19 October 1988, J. Starý coll.

Description. Female. Length of idiosoma 920 µm, width 710 µm (n = 1). Idiosoma strongly sclerotised, shape rounded, dorsally domed.

Dorsal idiosoma ( Fig. 13 View FIGURES 13 – 20 ). Marginal and dorsal shields not fused. Every seta on dorsal idisoma ca 25–35 µm long and marginally serrate ( Fig. 14 View FIGURES 13 – 20 ). Dorsal shield covered by small and deep oval pits, margins of marginal shield crenulated.

Ventral idiosoma ( Fig. 15 View FIGURES 13 – 20 ). Sternal setae not clearly visible (St 1, St 2 and St 3 are presumably present, but not visible in the only available female specimen), St 4 and St 5 short and finely serrate (ca 14–17 µm). Surface of sternal shield smooth, genital shield scutiform, surface with oval pits. Ventral setae short (ca 14–16), marginally serrate. Ventral shield covered by oval pits. Peritremes hook-shaped. Base of tritosternum narrow, tritosternal laciniae with serrate margins and two smooth apical branches ( Fig. 16 View FIGURES 13 – 20 ).

Gnathosoma ( Fig. 17 View FIGURES 13 – 20 ). Corniculi horn-like with two apical and one lateral teeth, internal malae longer than corniculi, their margins smooth. Hypostomal setae h 1 smooth, ca 53 µm, situated near anterior margins of gnathosoma, h 2 absent, h 3 marginally serrate, ca 38 µm long, h 4 similar in shape to h 3, ca 30 µm long. Distance between h 3 and h 4 equal to distance h 1 -h 3. Epistome not clearly visible. Chelicerae with internal sclerotised node, movable digit as long as fixed digit ( Fig. 18 View FIGURES 13 – 20 ).

Legs with smooth and simple setae, leg I without ambulacral claws.

Male. Length of idiosoma 820–880 µm, width 640–680 µm (n= 5). Shape of idiosoma, ornamentation, and chaetotaxy of the dorsum as in female. Sternal shield covered by oval pits ( Fig. 19 View FIGURES 13 – 20 ). Sternal setae short (ca 12–15), marginally serrate. St 1 situated at level of central region of coxae II, St 2 at level of anterior margin of genital shield, St 3 at level of posterior margin of coxae III, St 4 at level of anterior margin of coxae IV, St 5 at level of posterior margin of coxae IV. Genital shield circular, its surface with reticulate sculptural pattern. Ventral setae and ornamentation as for female.

Gnathosoma ( Fig. 20 View FIGURES 13 – 20 ).Corniculi horn-like, with two apical teeth, internal malae longer than corniculi and their margins smooth. Hypostomal setae h 1 smooth, ca 45 µm, situated near anterior margins of gnathosoma, h 2 smooth, ca 25 µm, h 3 marginally serrate, ca 38 µm, h 4 similar in shape and length to h 3. Distance between h 3 and h 4 eight times as long as distance h 1 -h 2 and h 2 -h 3.

Etymology. The name of the new species refers to the Latin word ‘aspera’ (pitted) for the deep oval pits on the surface of the body.

Remarks. Currently only one species is known from the genus Trichouropoda   with a rounded shape, strongly sclerotised and covered by deep oval pits ( Trichouropoda nigella Hiramatsu, 1976   described from Japan). The distinguishing differences between the new species and Trichouropoda nigella   are presented in Table 2.

Surface of genital shield reticulate smooth Position of St 1 between coxae II near anterior margin of sternal shield Hypostomal setae h 2 absent present Female

Anterior region of genital shield wide, scutiform narrow, bottle-shaped Hypostoml setae h 2 smooth serrate

HNHM

Hungarian Natural History Museum (Termeszettudomanyi Muzeum)

ISB

Institute of Spelology Emile Racovita