Archistempellina perkovskyi, 2014
publication ID |
https://doi.org/ 10.26879/621 |
publication LSID |
lsid:zoobank.org:pub:BAA44C0D-C497-4CED-85D7-B74A2A2AAEB4 |
persistent identifier |
https://treatment.plazi.org/id/59790D07-F928-3207-F6B2-019B1243FB1C |
treatment provided by |
Felipe |
scientific name |
Archistempellina perkovskyi |
status |
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Archistempellina perkovskyi
Giłka and Zakrzewska, 2014
Figure 1 View FIGURE 1
2014 Archistempellina perkovskyi Giłka and Zakrzewska in Zakrzewska and Giłka, p. 336, 342 (male, in key), figures 1, 2.
Material examined. Adult male (complete specimen) in 11.5 x 6 x 3.5 mm piece of amber (Eocene, ~40-45 Ma, Gulf of Gdańsk; CCHH 1754-4, Figure 1 View FIGURE 1 ).
Remarks. Archistempellina perkovskyi is a unique species known from the adult male, which bears distinct semicircular posterolateral lobes on the hypopygial tergite (see Zakrzewska and Giłka, 2014). We assume that these unusual structures can be incorrectly recognized as lobes of the superior volsellae, thus we confirm them as parts of the tergite (well developed in the examined specimen), probably homologous with those called “shoulders” (e.g., Ekrem et al., 2003). The original description of A. perkovskyi should be also supplemented with the following characters: wing length 1245 μm, VRCu 1.28; clypeus with at least 12 setae; thorax chaetotaxy: Ac at least 14, Dc at least 11-13, Pa 3, Scts at least 12; hind leg tibia with at least one spur ca. 45 μm long. Measurements of leg segments and leg ratios are compiled with those taken from the holotype specimen in Table 3. Unfortunately, some characters are still impossible to define on the basis of the presently examined male trapped in resin as freshly emerged (AR unmeasurable, hypopygium sunk into the abdomen with the anal point reaching the mid length of the inferior volsellae).
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