Brasiluropoda palmiformis, Kontschán, 2010
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publication ID |
https://doi.org/ 10.5281/zenodo.12584308 |
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persistent identifier |
https://treatment.plazi.org/id/DF6187EC-FFE9-B244-FDD2-9255FC36FC8B |
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treatment provided by |
Felipe |
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scientific name |
Brasiluropoda palmiformis |
| status |
sp. nov. |
Brasiluropoda palmiformis sp. n. ( Figs 17–24 View Figs 17–24 )
Diagnosis. Dorsal shield hypertrichous, covered by short and needle-like setae. Two pairs of marginal setae on caudal region with pilose margins, other marginal setae smooth and needle-like. Genital shield of female scutiform without ornamentation. Genital shield of male oval, with one pair of pilose setae near its anterior margins. Peritreme palm tree-like.
Material examined. Holotype: Female. Brazil, Pico Itatiaia , mountain forest, 1700–1800 m a.s.l., from leaf litter, 27.05.1992 Leg. J. BALOGH. Paratype: one female and five males . Locality and date same as holotype.
Description. Female. Length of idiosoma 780–810 µm, width 660–730 µm (n = 2). Shape oval, posterior margin rounded.
Dorsal idiosoma ( Fig. 17 View Figs 17–24 ). Marginal and dorsal shields completely separated. Dorsal shield hypertrichous, all dorsal setae smooth and needle-like (c. 9–14) ( Fig. 18 View Figs 17–24 ). Setae on marginal shield similar in length and shape to dorsal setae, two pairs of marginal setae (c. 18–19) on caudal region with pilose margins ( Fig. 19 View Figs 17–24 ). Marginal and dorsal shields without ornamentation.
Ventral idiosoma ( Fig. 20 View Figs 17–24 ). Ornamentation on sternal and ventral shields absent. Sternal setae short (c. 9–10), smooth and needle-like. St1 placed near to the anterior margin of genital shield, St2 on the level of posterior margin of coxae II, St3 on the level central region of coxae III, St4 on the level of anterior margins of coxae IV, St5 can be found near the basis of genital shield. Ventral setae smooth and needle-like, one pair of lyriform fissures placed near anal platelets. Stigmata situated between coxae II and III. Peritremes palm tree-like. Genital shield scutiform, without sculptural pattern and process on its apical margin. Base of tritosternum narrow, tritosternal laciniae subdivided into smooth lateral and pilose central branches ( Fig. 21 View Figs 17–24 ).
Gnathosoma ( Fig. 22 View Figs 17–24 ). Corniculi horn-like, internal malae smooth. Hypostomal setae similar in length, h1, h2 and h3 smooth, he with serrate margins, h1 situated near the anterior matgin of gnathosoma. Epistome not clearly visible. Chelicerae with nodes, movable digit shorter than fixed digit ( Fig. 23 View Figs 17–24 ).
Male. Length of idiosoma 750–800 µm, width 650–680 µm (n = 5). Shape oval, posterior margin rounded.
paratype (scale bar: 100 µm)
Dorsal idiosoma. Ornamentation and chaetotaxy of dorsal shield as in female.
Ventral idiosoma ( Fig. 24 View Figs 17–24 ). Sternal and ventral shields without ornamentation. Sternal setae short and needle-like except St4 which marginally pilose, their situation and shape illustrated on Fig. 24 View Figs 17–24 . Genital shield oval, placed between coxae III and IV, one pair of pilose setae placed anteriorly to genital shield.
Gnathosoma. Similar to that of the female.
Nymphs and larvae. Unknown.
Etymology. The name of the new species refers to the shape of peritreme.
Remark. The extraordinary palm tree-like peritreme is unique in the genus
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