Willowsia tanae, Chang, 2018
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publication ID |
https://doi.org/ 10.5852/ejt.2018.470 |
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DOI |
https://doi.org/10.5281/zenodo.5667124 |
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persistent identifier |
https://treatment.plazi.org/id/885D511B-FF9C-114B-FD0C-FECFFB7AFAEE |
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treatment provided by |
PlaziZenodoSync |
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scientific name |
Willowsia tanae |
| status |
sp. nov. |
Willowsia tanae View in CoL sp. nov.
urn:lsid:zoobank.org:act:070A4536-56EA-4325-A733-2901AF6512A4
Figs 8 View Fig. 8 ̅10, Tables 1 View Table 1 , 4
Diagnosis
Antennae and legs almost wholly blue pigmented and blue pigment present on most part of dorsum from Th. III to Abd. V; Abd. I with 3 mac; Abd. II with 3 central mac; Abd. III with 3 central and 3 lateral mac; Scales spinulate type and present on Ant. I̅II, dorsal side of head and terga, coxa to tibiotarsus, anterior face of ventral tube and ventral side of manubrium.
Etymology
Named after Ms Hongdan Tan, who collected the specimens.
Material examined
Holotype CHINA: ♀, on slide, Shangkanzhe Village, Laochang Town , Pan County, Guizhou Province, 25°39'34'' N, 104°48'27'' E, 1366 m a.s.l., in litter, 22 Jan. 2016, Hongdan Tan leg. (Collection number 1166 , NTU). GoogleMaps
Paratypes CHINA: 6 ♀♀, on slide, same data as holotype.
Description
MEASUREMENT. Body length up to 1.5 mm.
COLOUR. Ground colour pale yellow. Eyepatches dark blue. Antennae and legs almost wholly blue pigmented. Lateral side of Th. II and head behind eyepatches with blue pigment. Blue pigment present on most part of dorsum from Th. III to Abd. V ( Figs 8A–8C View Fig. 8 ).
HEAD. Antenna 0.3̅0.4 × as long as body. Antennal segments ratio as I: II: III: IV = 1: 1.4̅1.7: 1.4̅1.7: 2.1̅2.9. Distal part of Ant. IV with many sensory chaetae, normal ciliate chaetae and a bilobed apical bulb ( Fig. 9A View Fig. 9 ). Dorsal cephalic chaetotaxy with 7̅8 antennal (An), 4 median (M) and 9 sutural (S) mac ( Fig. 9B View Fig. 9 ). Interocular chaetae as p, s, t, all finely ciliate ( Fig. 9B View Fig. 9 ). Eyes 8+8, G and H smaller ( Fig. 9B View Fig. 9 ). Labral chaetae as 4/5, 5, 4, all slender; prelabral chaetae ciliate, other smooth, labral papillae not clearly seen ( Fig. 9C View Fig. 9 ). Lateral process of labial palp almost as thick as normal chaetae, with tip not reaching apex of labial papilla ( Fig. 9D View Fig. 9 ). Subapical chaeta of maxillary outer lobe equal to apical one, three smooth hairs on sublobal plate ( Fig. 9E View Fig. 9 ). Labial triangular chaetae as in Fig. 9F View Fig. 9 , MREL1L2 all finely ciliate.
THORAX. Dorsal macrochaetae shown as in Fig. 9G View Fig. 9 . Th. II with 2 (m1, m2) medio-median, 3 (m4, m 4i, m4p) medio-sublateral, 13 posterior mac, 1 ms and 2 sens. Th. III with 9 (10, p1p rarely present) median, 6̅7 (m5, a6, p5, p6, m6, m6e, m 5i sometimes absent) lateral mac and 2 sens. Trochanteral organ with 25̅26 smooth spiny chaetae ( Fig. 9H View Fig. 9 ). Unguis with 4 inner teeth, one pair located 0.5̅0.6 from base of inner edge of unguis, distal unpaired two respectively at 0.7 and 0.9 distance from base. Unguiculus acuminate and outer edge serrate. Tenent hair thick with clavate tip, slightly longer than length of inner edge of unguis ( Fig. 9I View Fig. 9 ).
ABDOMEN. Abd. IV 2.5̅3.2 × as long as Abd. III along dorsal midline. Dorsal mac shown in Figs 10A –10B View Fig. 10 . Abd. I with 3 (m2, m3, m4) mac, 1 ms and 1 sens; sens inner to ms. Abd. II with 3 (a2, m3, m3e) central, 1 (m5) lateral mac and 2 sens. Abd. III with 1 (m3) central, 3 (am6, pm6, p6) lateral mac, 1 ms and 2 sens ( Fig. 10A View Fig. 10 ). Abd. IV with 7 central (A3, A4, A6, B3, B4, B5, B6) and 11̅13 lateral mac as in Fig. 10B View Fig. 10 . Ventral tube anteriorly with 16̅18 ciliate chaetae ( Fig. 10C View Fig. 10 ), posteriorly with 24 ciliate chaetae and 2 smooth chaetae ( Fig. 10D View Fig. 10 ), laterally with 6̅7 ciliate chaetae and 5 smooth chaetae ( Fig. 10E View Fig. 10 ). Tenaculum with a striate chaeta ( Fig. 10F View Fig. 10 ). Manubrial plaque with 5̅6 ciliate chaetae and 2 pseudopores ( Fig. 10G View Fig. 10 ). Dens without spines, uncrenulated dens 1.1̅1.2 times as mucro in length. Mucro bidentate, two teeth subequal and tip of basal spine reaching subapical tooth ( Fig. 10H View Fig. 10 ).
SCALES. Hyaline, spinulate type, leaf-like and present on Ant. I̅II, dorsal side of head and terga, coxa to tibiotarsus, anterior face of ventral tube and ventral side of manubrium ( Fig. 10I View Fig. 10 ).
Remarks
The new species is most similar to the Chinese species W. variabilis Ma, 2016 in colour pattern and scale type, but Abd. I̅IV with 3, 3, 1 and 7 central mac in the former respectively, but 7̅8, 5, 2, 10̅13 central mac in the latter. It is also similar to the species W. sexachaeta sp. nov. in chaetotaxy, but their colour patterns are different. The differences between the three species are shown in Table 4.
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.
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