Archicera avarorum Szilády, 1934
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publication ID |
https://doi.org/ 10.5281/zenodo.13588506 |
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publication LSID |
lsid:zoobank.org:pub:08799CEE-C597-4D1C-90F2-569C42E9FAEB |
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persistent identifier |
https://treatment.plazi.org/id/03D487E4-FFBD-2306-8951-FE48FC09C3B2 |
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Felipe |
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scientific name |
Archicera avarorum Szilády, 1934 |
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Archicera avarorum Szilády, 1934 View in CoL
( Figs 3–5 View Fig View Fig View Fig )
MATERIAL EXAMINED: Belgium, Brussels-Capital Region: Auderghem, Jardin botanique Jean Massart , 2 females, 21–28 May 2015, MT2 ; 1 female, 13–21 May 2015, MT1 .
ADDITIONAL OBSERVATIONS: 2 females, 11–17 May 2017, MT6 ; 5 females, 11–17 May 2017, MT2 ; 1 female, 11–17 May 2017, MT5 ; 2 females, 17–24 May 2017, MT2 (leg. A. Drumont & H. Raemdonck) .
COMMENTS
A few more specimens of this very rare species were found in the year following the first sampling at the Garden, and thus examined and incorporated in the study. At first this species was confused with Spania nigra Meigen, 1830 . However, in S. nigra the flagellomere or third antennal segment has a rectangular base and bears a much thinner “arista” -like projection at the ventral corner of its apex. In all 13 females examined from the Garden, the entire flagellomere is broad throughout ( Fig. 3 View Fig ), also with a rather square base and no other segmentation is visible on the flagellomere. Such morphology of the antenna is typical for Archicera avarorum , a species and genus described by SZILÁDY (1934) on the base of two
females. One female was found in Jasenak ( Croatia) and another in Spital (Styria, Steirermark, Oberösterreich, Austria). It was originally described as a subgenus of Ptiolina and only later considered as a distinct genus. Eventually the genus Archicera was considered as a synonym of Spania by NAGATOMI (1982) and by KERR (2010) because the shape of the third antennal segment fell into the variability of Spania species. Since the two syntypes of A. avarorum were destroyed, PAPP (2018) designated a female recently found in Romania as neotype. PAPP did not wish to express himself on the status of Archicera and we follow his view and leave the question unanswered. His re-description fits entirely to our specimens and that is why we consider our specimens to be conspecific with A. avarorum .
A. avarorum is a variable species. The shape of the flagellomere is slightly variable even on the same specimen ( Fig. 4 View Fig ) but it is always broad and flattened. The discal cell has 3 veins on its apex. The third vein generally does not reach the wing margin, which is a generic character for both Spania and Archicera . However, we found a specimen in which the third vein reaches the wing margin in one wing ( Fig. 3 View Fig ) but not on the other wing. In another specimen the discal cell was apically open while there was also a specimen in which the two apical veins of the discal cell arose from the tip of the discal cell in one wing as was illustrated by PAPP (2018) in a Spania specimen.
The palp consists apparently of a single segment as no separation of palpomeres was visible ( Fig. 5D View Fig ) The palp is broad with a truncate tip, bearing two small bristles at the tip and a series of long bristles dorsally at the base ( Fig. 5D View Fig ). The proboscis is tubiform and the labellae are large. The pseudotracheae are thin, long and coiled and some might be furcate so that it is not clear if 8 or 9 pseudotracheae are present ( Fig. 5D, E View Fig ). Fig. 5A View Fig illustrates the female terminalia in dorsal position while Fig. 5B View Fig shows the ventral position.
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.
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