Cissidium angulatum, 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.3795706 |
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persistent identifier |
https://treatment.plazi.org/id/0A8C4F42-155C-4326-B4D9-097A0AB57637 |
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taxon LSID |
lsid:zoobank.org:act:0A8C4F42-155C-4326-B4D9-097A0AB57637 |
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treatment provided by |
Valdenar |
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scientific name |
Cissidium angulatum |
| status |
sp. nov. |
Cissidium angulatum View in CoL sp. nov.
urn:lsid:zoobank.org:act:0A8C4F42-155C-4326-B4D9-097A0AB57637
Fig. 87 View Fig
Etymology
Named after the strongly angled lateral margins of the pronotum.
Material examined
Holotype
PANAMA • ♀; B.C.I. [ Barro Colorado Island ]; 7 Dec. 1938; 3cAu FM( HD) #38.6; HD [Henry Dybas] leg.; FMNH.
Paratype
PANAMA • 1 ex., BCI., 21 Jul. 1938; 3cAEu; FM( HD) #38.10; mounted verso; MMUE.
Description
SIZE. Habitus ( Fig. 87A View Fig ), length 0.67 mm.
COLOUR. Dark brown, elytra dusky yellow where translucent, pubescence, legs and antennae dusky yellow.
HEAD. With a clearly marked linear depression behind the eyes, width across eyes 0.19 mm; antennomeres III–XI length 0.33 mm, III–IX length 0.22 mm, X–XI length 0.11 mm; mentum narrowed towards base then parallel-sided towards anterior margin, front angles obtuse.
PRONOTUM. Length 0.19 mm, width 0.28 mm, sparsely pubescent length of setae 0.05 mm, without foveae; side margins strongly bordered, sharply angled, border not extending onto posterior margin which has an emargination opposite the scutellum, hind angles acute ( Fig 87B View Fig ).
ELYTRA. Length 0.42 mm, width 0.37 mm, sparsely pubescent, length of setae as pronotum. MESOVENTRITE. Medial extension of collar short; mid-keel posterior margin reaching anterior margin of mesocoxal cavities, keel with a series of ± six setae arising from scale-like, overlapping cells then tapering to point between mesocoxae; mesoventral humeri sharply toothed with strongly sinuate posterior border, lateral margins without serrations ( Fig. 87C View Fig ).
METAVENTRITE. Length 0.13 mm, width across spines 0.10 mm, with scattered setae and a shallow medial depression, disc simple; posterior margins of mesocoxal cavities serrate.
WINGS. Macropterous.
GENITALIA. Female spermatheca globular. Males unknown.
Remarks
Only likely to be confused with C. dividuum sp. nov. in this group of Cissidium from Panama on dorsal characteristics but distinguished from that species by the longer mesoventral mid-keel and presence of a median extension of the collar.
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.