Acantharadus, Bergroth, 1886
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publication ID |
https://zoobank.org/9196D59A-6501-4576-9ED7-00DC51B05EA1 |
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persistent identifier |
https://treatment.plazi.org/id/03C987FB-FFEA-FFA9-FE89-4D15FC00FE5B |
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treatment provided by |
Felipe |
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scientific name |
Acantharadus |
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Acantharadus quaternarius ( Bergroth, 1886)
(Figs 7–9, 15–16)
Material examined – MALAYSIA: “ SABAH: Poring Hot / Springs , 550–800 m / 5.V.1987
/ Burckhardt – Löbl”, (1 f, NHMG); “Sandakan / Borneo / Baker // USNM ” (1 f with wings removed, 1 m with identification label as “ Acantharadus quaternarius (Bergroth)”, USNM); “Tabekang / 12-5-14 // Sarawak Mus. / J. C. Moulton // 24 // Distant Coll. 1911-383” (1 f, BMNH). INDONESIA: “ Sumatra // 530/11 // Dysodius quaternarius Bergr.” (1 f, HNHM).
Remarks – BERGROTH (1886) gave a small but good drawing of his Dysodius quaternarius. BANKS (1909) also gave a good habitus figure with the original description of A. giganteus Banks, 1909, now a junior synonym of A. quaternarius ( Bergroth, 1886), since BERGROTH (1911) discovered that they are conspecific. (The type specimen of A. giganteus most probably perished during WWII.) The specimens from Borneo examined in the course of the present study match well with these figures and also with the text and illustration provided by USINGER and MATSUDA (1959), and accordingly, they are considered to represent A. quaternarius. Some excellent quality photos are available on the internet from further localities, showing clear characteristics of A. quaternarius; these helped to improve morphological information but are not considered as verified distribution data. Some additional features were given in the discussion of A. flora sp. n. above.
The single examined specimen from Sumatra bears a code “530/11”. Ac- cording to the associated inventory records deposited in the Hungarian Natural History Museum, no. 530 refers to materials collected by Dr I. G. Maschik in Sumatra in 1879. The specimen in concern shows a few differences from the material from Borneo: its pronotum is provided with a longer median sinus, its anterolateral lobes are directed anteriorly with almost straight, parallel inner margins ( Fig. 9 View Figs 9–11 ), its abdominal margin bears slightly shorter, finger-like, apically rounded spines; these spines are uniformly longer on all other specimens examined, see the photographic images ( Figs 15–16 View Figs 15–16 ). These differences, however, are considered insufficient for establishing a new taxon based on this single specimen, which is accordingly identified as A. quaternarius.
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