Alluropus Silvestri, 1911
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publication ID |
https://doi.org/ 10.11646/zootaxa.4825.1.1 |
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publication LSID |
lsid:zoobank.org:pub:F230F199-1C94-4E2E-9CE4-5F56212C015F |
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DOI |
https://doi.org/10.5281/zenodo.4457023 |
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persistent identifier |
https://treatment.plazi.org/id/03DE092D-FFC3-D73E-FF13-FA412F6ADEB7 |
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treatment provided by |
Plazi |
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scientific name |
Alluropus Silvestri, 1911 |
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(!) Alluropus Silvestri, 1911 View in CoL
Figs 110–112 View FIGURES 108–112
Type species. Alluropus demangei Silvestri, 1911 View in CoL (by monotypy). This species was synonymized with A. calcaratus (Pocock, 1891) (former Rhysida calcarata View in CoL ) by Siriwut et al. (2018: 1029).
Diagnosis. Median tooth of labrum well developed. Forcipular tooth-plates present, trochantero-prefemur with well-developed process ( Fig. 111 View FIGURES 108–112 ). Tergites lacking longitudinal keels. Sternites with paramedian sutures which may be incomplete. LBS 7 with spiracles, the spiracles with atrium (fig. 21J in Siriwut et al. 2018). Legs with tarsal spur(s), legs 1 with prefemoral spur ( Fig. 111 View FIGURES 108–112 ). Coxopleural process normally developed, with spines ( Fig. 110 View FIGURES 108–112 ). Prefemur of the ultimate leg with numerous spines ventro-medially and ventro-laterally (not with “a row of shallow tubercles” as written in Edgecombe & Bonato 2011: 402). This prefemur with well-developed corner spine of characteristic shape: long and enlarged in males ( Fig. 110 View FIGURES 108–112 ) and visibly smaller, comb-like in females ( Fig. 112 View FIGURES 108–112 , fig. 22H in Siriwut et al. 2018). Ultimate tarsus 1 in males considerably swollen, with short, blunt dorsodistal projection ( Fig. 110 View FIGURES 108–112 ) followed by a disproportionately slender tarsus 2; pretarsus well-developed, with accessory spines.
Number of species. 1.
Sexual dimorphism. Present.
Remarks. Treated as a genus in Edgecombe & Bonato (2011: 402), Siriwut et al. (2018: 1005). The latter authors wrote in the Diagnosis of Alluropus (p. 1029): “… leg 1 with prefemoral … spurs. … Ultimate legs with male secondary sexual characters, such as swollen structure of tarsus 1 and dorsomedian projection [= corner spine] on prefemur” and (p. 1032): “The original description of R. calcarata also indicated characteristics of Alluropus , such as … and a prefemoral process on the ultimate legs that has not been reported in most South-East Asian Rhysida such as R. longipes , R. singaporiensis , R. immarginata and R. monticola ”. Based on re-investigation of ZMMU’s material of both Rhysida (see Remarks above) and Alluropus calcaratus (Pocock, 1891) —an adult female ca 30 mm long from Central Laos (Rc 7161), mentioned by Schileyko (2007: 83) as Rhysida calcarata Pocock, 1891 —we confirm these characters as diagnostic for Alluropus . None of the re-studied specimens of Rhysida (from either South-East Asia or the Neotropics, see above) have a prefemoral spur on leg 1 or a corner spine on the ultimate prefemur ( Fig. 107 View FIGURES 102–107 ). The re-studied specimen of Alluropus calcaratus has a coxopleural process of medium length with apical and subapical + lateral (or posterior coxopleural?) spines (i.e. as in the corresponding pictures of Siriwut et al. 2018), relatively short ultimate legs, the prefemur with spines and a very characteristic comb-like corner spine (figs 22G, 22H of Siriwut et al. 2018). These characters are virtually identical to those of females of A. calcaratus as presented in Siriwut et al. (2018).
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