Trigonuropoda fendai, Kontschán, 2013

Kontschán, Jenő, 2013, Five new Uropodina species from New Caledonia (Acari: Mesostigmata), Journal of Natural History (J. Nat. Hist.) 47 (19 - 20), pp. 1339-1364 : 1357-1362

publication ID	https://doi.org/ 10.1080/00222933.2012.759284
DOI	https://doi.org/10.5281/zenodo.10536484
persistent identifier	https://treatment.plazi.org/id/038587D2-FFA2-FF99-C14B-FC579823FB11
treatment provided by	Felipe
scientific name	Trigonuropoda fendai
status	sp. nov.

Treatment

Trigonuropoda fendai sp. nov.

( Figs 16–19 View Figure 16 View Figure 17 View Figure 18 View Figure 19 )

Material examined

Holotype: female. New Caledonia, Mount Panié , c. 400–500 m above sea level, moss from leaf of ferns and agave, 2 June 1986. Leg. J. Balogh . Paratypes, two females, one male in NHMG and five females, three males, two nymphs in HNHM. Locality and date same as in holotype .

Description of male

Length of idiosoma 620–630 µm, width 410–440 µm (n = 9). Shape of idiosoma triangular, posterior margin rounded.

Dorsal side ( Figures 16A View Figure 16 and 19A View Figure 19 ). Marginal and dorsal shields fused anteriorly. Dorsal shield bearing smooth and needle-like setae (c.7–9 µm) and covered by oval pits. Marginal shield with undulate inner margin and ornamented by oval pits, marginal setae smooth and needle-like (c.7–9 µm).

Ventral side ( Figures 16B View Figure 16 and 19B View Figure 19 ). All sternal setae smooth and needle-like. St1, St2 and St4 short (c.3–4 µm), St3 and St5 long (c.6–8 µm), St1 situated at level of anterior margin of coxae II, St2 at level of central area of coxae II, St3 at level of central area of coxae III, St4 at level of anterior margin of coxae IV and St5 placed near basal line of genital shield. Surface of sternal shield smooth, one pair of lyriform fissures placed near St1 ( Figure 16C View Figure 16 ). Pedofossae deep, their surface smooth, deep furrows for tarsi IV present. All setae on ventral shield short (c.7–9 µm), smooth and needle-like. Ventral shield ornamented by oval pits. Genital shield scutiform, without anterior process, its surface on caudal area covered by oval pits, anterior part smooth. Genital shield placed between coxae II and IV. Stigmata situated between coxae II and III, peritremes U-shaped.

Tritosternum ( Figure 16D View Figure 16 ). With narrow basis, tritosternal laciniae divided into three smooth branches.

Gnathosoma ( Figure 17A View Figure 17 ). Corniculi horn-like, internal malae smooth and longer than corniculi. Hypostomal setae h1 Y-shaped (c.18 µm) and smooth, h2 smooth and needle-like (c.8 µm), h3 long (c.19 µm) and with two marginal spines, h4 (c.12 µm) marginally with three spines. Epistome marginally serrate. Fixed digit of chelicerae longer than movable digit, fixed digit bearing a large apical tooth, movable digit with very short teeth cheliceral node present ( Figure 17B View Figure 17 ). Palp trochanter with one smooth and one marginally serrate seta, other setae on palp smooth.

Legs ( Figure 17C–F View Figure 17 ). Bearing mostly smooth and simple setae, but marginally serrate setae can be found on tarsi of legs II-IV, the first legs with ambulacral claws.

Description of male

Length of idiosoma 610–680 µm, width 390–440 µm (n = 4). Shape, dorsal aspect of idiosoma same as in female.

Ventral side ( Figure 7G View Figure 7 ). Sternal setae short (c.6–7 µm), smooth and needle-like. St1 situated at level of anterior margin of coxae II, St2 at level of posterior margin of coxae II, St3 at level of central area of coxae III, St4 near posterior margin of genital shield. Surface of sternal shield ornamented by oval pits. Genital shield circular, without sculptural pattern and situated between coxae III. Ventral setation, processes of gnathosoma and legs same as in female.

Description of deutonymph

Length of idiosoma 540–560 µm, width 330–340 µm (n = 2). Shape triangular with rounded posterior margin.

Dorsal aspect of idiosoma ( Figure 18A View Figure 18 ). Dorsal shield covered by irregular pits, all setae on dorsal shield smooth and needle-like (c.13–17 µm), marginal setae placed on small platelets, needle-like and smooth (c.13–15 µm).

Ventral aspect of idiosoma ( Figure 14B View Figure 14 ). Sternal setae short (c.5–6 µm), smooth and needle-like. Surface of sternal shield with several oval pits, other shields of ventral idiosoma covered by irregular pits. Ventral shield bearing four pairs of smooth and needle-like setae. First pair of setae shorter (c.5 µm) than other setae (c.15 µm), one pair of adanal setae and one postanal seta smooth and needle-like (c.13 µm). Peritremes m-shaped.

Gnathosoma and its appendages similar to that of the female.

Larva

Unknown.

Etymology

I dedicate the new species to the excellent Slovakian acarologist, my dear friend, Dr Peter Fend’a.

Remarks

The two new Trigonuropoda species belong to Hirschmann’s (1975) crucistructuraspecies group, on the basis of undulate inner margin of marginal shield and the shorter prestigmatic part of peritreme. Currently 11 species belong to this group, which occur in Sri Lanka, New Guinea and East Africa. Oval pits on dorsal and ventral shields can only be seen on the Trigonuropoda structura Hirschmann 1975 , the other species of this group have different kinds of sculptural pattern on dorsal and ventral idiosoma. The differences between T. structura and the two new species are summarized in Table 1.