Desmoxytes phasmoides, Liu, Weixin, Golovatch, Sergei & Tian, Mingyi, 2016
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publication ID |
https://dx.doi.org/10.3897/zookeys.577.7825 |
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publication LSID |
lsid:zoobank.org:pub:FA39ED68-8F91-46A9-838A-C0F9803F70DE |
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persistent identifier |
https://treatment.plazi.org/id/258D7BBE-ECB2-4123-A03A-390B70438280 |
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taxon LSID |
lsid:zoobank.org:act:258D7BBE-ECB2-4123-A03A-390B70438280 |
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treatment provided by |
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scientific name |
Desmoxytes phasmoides |
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sp. n. |
Taxon classification Animalia Polydesmida Paradoxosomatidae
Desmoxytes phasmoides View in CoL sp. n. Figs 1G, 8, 9
Holotype
♂ (SCAU), China, Guangxi, Baise, Lingyun Xian, Jiayou Zhen, Yangli Cun, Cave Fengliu Dong, 2015-VI-9, leg. Mingyi Tian, Weixin Liu, Xinhui Wang & Mingruo Tang.
Paratypes.
1 ♂, 1 ♀ (SCAU), 1 ♂ (ZFMK), same locality and collecting data as the holotype.
Name.
To emphasize that superficially this new species somewhat resembles a stick insect, Phasmatodea ; noun in apposition.
Diagnosis.
Keys out to the superficially most similar Desmoxytes minutubercula Zhang, 1986 ( Liu et al. 2014), especially so due to long spiniform paraterga and a particularly condensed solenophore, but differs by a pair of rounded, setose processes present between ♂ coxae 4 and the gonopod lamella medialis showing a distinct spine.
Description.
All characters as in Desmoxytes laticollis sp. n., except as follows.
Length of both sexes ca 27-29 mm, width of midbody pro- and metazonae 1.3-1.5 and 2.8-3.0 mm, respectively. Holotype 29 mm long, 1.5 and 3.0 mm wide on midbody pro- and metazonae, respectively. In width, segment 2-4 <collum <head <5-7 <8-18. Coloration rather uniformly light brownish, some metaterga and bases of paraterga pinkish (Fig. 1G). Antennae very long and slender, reaching back until posterior margin of segment 8 (7) (♂) or 6 (♀) when stretched dorsally.
Tegument shining and smooth, prozonae faintly microalveolate; metazonae finely microgranulate (Fig. 8). Collum (Fig. 8A) with at least 6+6 anterior, 4+4 (5) intermediate and 3+3 posterior setigerous spines; paraterga on collum spiniform, directed dorsolaterad, with a setigeous spine anteriorly at distal 1/3 (Figs 8A, 9A). Metaterga 2-4 each with 4+4 anterior, 3+3 intermediate and 5+5 posterior setigerous tubercles; metaterga 5-19 with a pattern of 5+5 setigerous tubercles anteriorly, these occasionally arranged in two transverse rows, as well as 4+4 between paraterga and at least 5+5 setigerous tubercles at posterior margin. Paraterga 2-18 (Fig. 8) extremely long, straight, spiniform, simple, usually with 2-3 very small setigerous denticles on lateral side; only paraterga 19 directed caudad. Ozopores inconspicuous, lying at base of pore-bearing paraterga on lateral side (Fig. 8D). Transverse sulcus incomplete, present on segments 6-18 (Fig. 8B, D, E).
Sterna modestly setose, cross-impressions very shallow (Fig. 8C, E). A pair of paramedian, rounded, setose processes between ♂ coxae 4 (Fig. 9B). Legs long and slender, midbody legs ca 4.5 (♂) or 3.5 (♀) times as long as body height; ♂ femur 6 with a very evident apophysis at distal 1/4 (Fig. 9C).
Gonopods (Fig. 9 D–F) subfalcate. Coxite very short, less than 1/3 as long as telopodite. Prefemur short, less than half as long as acropodite. Femorite rather long, curved ventrad. Solenophore highly condensed, divided into a small, rectangular lamella lateralis and a simple lamella medialis, the latter with a distinct spine (s) at about midlength; solenomere very short and flagelliform.
Remark.
Because of the pallid tegument and extremely elongated antennae and legs, this species may well be a troglobite.
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.