Cissidium bilineatum, Darby, 2020
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publication ID |
https://doi.org/ 10.5852/ejt.2020.622 |
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publication LSID |
lsid:zoobank.org:pub:9CD3B2CD-F072-4994-8CA9-24145D343401 |
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DOI |
https://doi.org/10.5281/zenodo.3795664 |
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persistent identifier |
https://treatment.plazi.org/id/E3934680-B3BE-4C64-87A4-FE0BEEF8896F |
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taxon LSID |
lsid:zoobank.org:act:E3934680-B3BE-4C64-87A4-FE0BEEF8896F |
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treatment provided by |
Valdenar |
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scientific name |
Cissidium bilineatum |
| status |
sp. nov. |
Cissidium bilineatum View in CoL sp. nov.
urn:lsid:zoobank.org:act:E3934680-B3BE-4C64-87A4-FE0BEEF8896F
Figs 3H View Fig , 6A View Fig , 66 View Fig
Etymology
Named after the linear depressions on the pronotum
Material examined
Holotype
MALAYSIA • ♂; E Johore Sedili, Jason’s Bay , coastal swamp forest; 13 Oct. 1963, very wet litter; D.H. Murphy leg.; No 82; FM(HD) # 50.34; FMNH.
Paratypes
MALAYSIA • 1 ♂, 2 ♀♀; same collection data as for holotype; 1 ♀ mounted verso; MMUE, BMNH.
Additional material
MALAYSIA • 1 ♂; Sabah, Sandakan Distr., Sapagaya Forest Res.; 27 Jul. 1980; logged dipterocarp forest; R.F. Inger and D.D. Davis leg.; lacking antennae and with one elytron re-attached; MMUE. This specimen, not listed as a paratype, may be this species. It is much darker than the type series but in all
other respects similar, particularly in having a very setose head and patches on the mesoventral collar without reticulation.
Description
SIZE. Habitus ( Fig. 66A View Fig ), length 0.68 mm.
COLOUR. Yellow brown, pubescence, legs and antennae slightly paler
HEAD. Densely setose and foveolate ( Fig. 3H View Fig ); width across eyes 0.21 mm; antennomeres III–XI length 0.33 mm, III–IX length 0.21 mm, X–XI length 0.12 mm globular; mentum as Fig. 4A. View Fig
PRONOTUM. Length 0.21 mm, width 0.31 mm, pubescence more outstanding than on elytra, with two linear depressions reaching almost to the midpoint of the sclerite; side margins ± sharply angled then sinuate to obtuse hind angles, bordered, the border extending along the entire posterior margin including the emargination opposite the scutellum ( Fig. 66B View Fig ).
ELYTRA. Length 0.44 mm, width 0.40 mm, more densely pubescent than pronotum, pubescence slightly shorter.
MESOVENTRITE. Medial extension of collar narrow either side of semi-circular impressions in collar then widening posteriorly; mid-keel posterior corners not reaching anterior margin of mesocoxal borders; keel with a series of ± nine setae, almost parallel to a rounded tip between the mesocoxae; mesoventral lateral margins serrate in posterior half; humeri strongly toothed ( Fig. 66C View Fig ).
METAVENTRITE. Length 0.16 mm, width across spines 0.10 mm, with scattered setae, disc plain; posterior margins of mesocoxal cavities serrate.
WINGS. Macropterous.
GENITALIA. Male aedeagus as Fig. 6 View Fig Fa–b. Female spermatheca ( Fig. 6A View Fig ).
Remarks
Distinguished from C. visendum sp. nov., the only other Cissidium recorded from Malaya in this group, by the presence of the linear depressions on the pronotum.
| FMNH |
USA, Illinois, Chicago, Field Museum of Natural History (also used by Finnish Museum of Natural History) |
| MMUE |
United Kingdom, Manchester, The University, Manchester Museum |
| BMNH |
United Kingdom, London, The Natural History Museum [formerly British Museum (Natural History)] |
| FMNH |
Field Museum of Natural History |
| MMUE |
Museum of Manchester University |
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.