Willemia zeppelini, D’Haese, Cyrille A. & Thibaud, Jean-Marc, 2011
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publication ID |
https://doi.org/ 10.5281/zenodo.202784 |
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DOI |
https://doi.org/10.5281/zenodo.6194914 |
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persistent identifier |
https://treatment.plazi.org/id/700A87F1-FFDA-BD14-C4B3-FD18FBECF813 |
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treatment provided by |
Plazi |
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scientific name |
Willemia zeppelini |
| status |
sp. nov. |
Willemia zeppelini sp. nov.
Figs 1–5 View FIGURE 1 – 5
Type material. Holotype (female) and 2 paratypes (females).
Type locality. Brazil, Joao Pessoa, Beach of Tambau, central region, Joao Pessoa, PB. 17.vi.2010.
Other localities. Beach of Camboinha 3, Cabedelo, PB. 19.vi.2010; 3 specimens, 1 male, 2 females (MNHN- EA010008 to MNHN-EA010010).
Description. Body length: holotype 300 µm (MNHN-EA010005), paratypes 270–330 µm (MNHN-EA010006 to MNHN-EA010007). Color in alcohol white, body with short acuminate ordinary chaetae, some slightly longer. Sensory chaetae a little thicker and longer than ordinary chaetae. Tegumental granulation fine and regular.
Antennae somewhat shorter than head’s diagonal (40 µm; and 50 µm respectively). Ant. I and Ant. II with 7 and 11 chaetae respectively ( Fig. 2 View FIGURE 1 – 5 ). Ant. III and IV only hardly separated. Sensorial organ of Ant. III consisting of a large integumentary fold hiding 2 internal s-microchatae, 2 long guard chaetae, 2 long sensory rods with a dark axis and lighter expansions on both sides, and one ventral microsensillum ( Fig. 1 View FIGURE 1 – 5 ). Ant. IV with a large globular apical bulb, microsensillum and subapical organite present. Ant. IV s-chaeta comprising of S 2/ d and S 9/ e 1 absent or not differentiated form ordinary chaetae, S 1/ i 1 and S 8/ e 2 subcylindrical or hardly differentiated from ordinary chaetae, and S 4/ i 2 and S 7/ e 3 enlarged with the shape of a slightly flattened pear. Some variation is observed with S 1, S 8, S 4 and S 7 being in a continuum from subcylindrical hardly differentiated from ordinary chaetae to flattened pear-shaped ( Figs 1–2 View FIGURE 1 – 5 ).
Postantennal organ with 4 to 5 tubercles ( Fig. 3 View FIGURE 1 – 5 ), no eyes. Chaetae a 0 and c 1 absent on the head ( Fig. 3 View FIGURE 1 – 5 ). Prelabrum/labrum with 2/2,5,4 chaetae. Three pairs of labial chaetae.
Dorsal body chaetotaxy presented in Fig. 3 View FIGURE 1 – 5 . The specimens observed present some variation and asymmetries. Chaetae s per half tergum formula: 22/11111 generally, in m 7 and p 4 position on thorax II and III terga, in p 4 position on abdominal terga I to IV and p 2 position on Abd. V i.e. chaeta p 2 absent; some specimens have p 2 present (i.e. chaeta s in p 3 position). Thorax II and III with reduced chaetotaxy: a 1, a 2 or m 3 seem to be missing ( Fig. 3 View FIGURE 1 – 5 ). Abd. II and III with a 2, but without m -row. Abdomen IV without m1, m2, m3, or m’3 or p 5. No anal spine.
Ventral tube with 4 + 4 chaetae. Ventral abdominal chaetotaxy as in Fig. 4 View FIGURE 1 – 5 . Furcula absent. Female genital plate with 2 eugenital chaetae; male genital plate with 8 eugenital chaetae.
Anal valves with one hr chaeta and without e and z chaetae ( Fig. 4 View FIGURE 1 – 5 ).
Tibiotarsal chaetotaxy I, II and III with 12 chaetae each. Unguis with a small empodial appendage and without teeth ( Fig. 5 View FIGURE 1 – 5 ).
Derivatio nominis. The new species is cordially dedicated to the brazilian collembologist Professor Douglas Zeppelini from Universidade Estadual da Paraiba in Joao Pessoa, who participated to the collection of this new species.
Distribution. Phylogenetically, W. zeppelini fits among central american/neotropical species (W. subbulbosa, persimilis -group and W. brevispina) which makes a lot of sense biogeographically. The only other Willemia species recorded from Brazil is W. brevispina Hüther, 1962, found in littoral sand near Rio coast ( Thibaud & Palacios-Vargas 1999) and it is one of the closest to the new W. zeppelini on the phylogeny ( Fig. 6 View FIGURE 6 ).
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.