Serangium Blackburn, 1889
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publication ID |
https://doi.org/ 10.11646/zootaxa.4571.2.7 |
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publication LSID |
lsid:zoobank.org:pub:9DF2B61F-B13E-40CC-AC4E-429D384AC976 |
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DOI |
https://doi.org/10.5281/zenodo.5932614 |
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persistent identifier |
https://treatment.plazi.org/id/4E7E87DB-FFEE-561D-FF33-FCAFFD78BB12 |
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treatment provided by |
Plazi |
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scientific name |
Serangium Blackburn, 1889 |
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Genus Serangium Blackburn, 1889 View in CoL View at ENA
Type species: Serangium mysticum Blackburn, 1889 , by monotypy.
Serangium kalandyki sp. nov.
Figs 1–3 View FIGURE 1 View FIGURE 2 View FIGURE 3 .
urn:lsid:zoobank.org:act:165827C0-0929-448E-8597-DEEABB18ACD9
Etymology. The species name is an honorific for Mr. Wojciech Kalandyk, collector of the amber piece containing the holotype and donator of a large collection of amber inclusions to the Museum of Amber Inclusions at the University of Gdańsk.
Type material. Holotype, MAIG, No. 1535 ( Fig. 1 View FIGURE 1 ). Reference IR curves No. MAIG 1535 IR ( Fig. 2 View FIGURE 2 ) and deposited in MAIG, International Amber Association database curve No. 13835. Piece of Baltic amber transparent yellow, anterior and anterior left part of the ventral side of the beetle inclusion covered with milky veil. Cuticle black, without any trace of maculation. Amber piece donated by Wojciech Kalandyk, beetle inclusion determined as Coccinellidae by Daniel Kubisz. Syninclusions: Arachnida: Acari (2 specimens); Diptera : Chironomidae (1 specimen); Diptera : Sciaridae (1 specimen).
Locality and Horizon. Eocene, Lutetian, Baltic amber, Jantarnyj area (secondary deposit) ( Wappler 2005).
Diagnosis. Serangium kalandyki sp. nov. is most similar to S. gedanicum Szawaryn & Szwedo, 2018 in possesing a setiferous elytral disc, metaventrite as long as ventrites 1–4 combined, and deeply marked elytral foveae for reception of hind femora. It differs in that the elytral margin is visible throughout from above, with a row of long sparse setae on the outer margin. S. gedanicum possesses a barely visible elytral margin from above with a row of short sparse setae on outer margin.
Description. Total length = 1.47 mm, total width = 1.19 mm, elytral length = 1.18 mm, pronotal length = 0.39 mm, pronotal width = 0.77 mm, body high = 0.68 mm. Body oval ( Fig. 1B View FIGURE 1 ), strongly convex, hemispherical ( Fig. 1E View FIGURE 1 ); elytral margins entirely visible. Wings visible apically.
Head hypognathous, retracted, not clearly visible. Antenna not visible.
Pronotum transverse, covered with punctures, glabrous, shiny; with raised border along basal margin ( Fig. 1B View FIGURE 1 ). Prothoracic hypomeron posteriorly with deep delimited fovea for reception of folded antennae and retracted forelegs. Prosternum large, elevated, prominent anteriorly, forming anteriorly rounded, broad chin piece concealing mouthparts from below ( Fig. 1D View FIGURE 1 ); prosternal process smooth. Mesoventrite with mesoventral process strongly transverse, very short ( Fig. 1G View FIGURE 1 ), anterior margin with complete raised border; meso-metaventral junction with suture visible; mesoventral process broader than mesocoxal diameter. Metaventrite transverse, as long as abdominal ventrites 1–4 combined ( Fig. 1G View FIGURE 1 ); metaventral postcoxal lines joined medially, complete, extending to metanepisternum.
Scutellar shield small, triangular, glabrous ( Fig. 1B View FIGURE 1 ).
Elytral surface covered with sparsely distributed punctures, each bearing short seta ( Fig. 1C View FIGURE 1 ); outer margin with row of sparse, long setae ( Fig. 1B View FIGURE 1 ), sutural line not present. Epipleura incomplete apically, inclined throughout, reaching about base of 5 th abdominal ventrite ( Fig. 1A View FIGURE 1 ), with foveae to accommodate apices of mid, hind femora, foveae for hind femora deep, reaching about 2/3 epipleural width ( Fig. 1F View FIGURE 1 ).
Abdomen with five ventrites: ventrites 1 and 5 each longer than ventrites 2 and 3 combined, ventrite 5 rounded, not crenulated, not grooved laterally ( Fig. 1F View FIGURE 1 ). Postcoxal lines complete, reaching lateral margin of ventrite ( Fig. 1A View FIGURE 1 ).
Legs short, not reaching outer margin of elytra ( Fig. 1A View FIGURE 1 ); coxae large, about half length of femora; femora, especially profemur, broad, flattened ( Fig. 1D View FIGURE 1 ), mid and hind femora closely fitting into depression on meso- and metaventrite ( Fig. 1F View FIGURE 1 ); tibiae externally angulate medially ( Fig. 1A, F View FIGURE 1 ); tarsi four-segmented ( Fig. 1F View FIGURE 1 ); tarsal claws toothed at base.
Sex undetermined. Genitalia not visible.
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.