Baltosidis, Szawaryn, 2021
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publication ID |
https://doi.org/ 10.1093/zoolinnean/zlaa180 |
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publication LSID |
lsid:zoobank.org:pub:529D72D0-2863-41BC-AEB0-D421B716CFFD |
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DOI |
https://doi.org/10.5281/zenodo.5763968 |
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persistent identifier |
https://treatment.plazi.org/id/58C958C5-6656-4749-94C1-69E7666B58EC |
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taxon LSID |
lsid:zoobank.org:act:58C958C5-6656-4749-94C1-69E7666B58EC |
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treatment provided by |
Plazi |
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scientific name |
Baltosidis |
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gen. nov. |
GENUS † BALTOSIDIS GEN. NOV.
( FIGS 2–4 View Figure 2 View Figure 3 View Figure 4 )
Z o o b a n k r e g i s t r a t i o n: u r n: l s i d: z o o b a n k. o r g: act:58C958C5-6656-4749-94C1-69E7666B58EC
Type species: † Baltosidis damzeni.
Diagnosis: Baltosidis is most similar to the genus Parasidis , having ten antennomere antenna with three-antennomere club, ventrite 1 with complete or almost complete v-shape abdominal postcoxal lines and four tarsomeres. However, it can be distinguished by a presence of distinct sutural carinae placed in the apical half of elytra. From similar-looking Coccidophilus Brèthes, 1905 and Stictospilus Brèthes, 1924 , it can be separated by four-segmented tarsi (three segmented in both genera) and an antennal club consisting of three antennomeres (in Coccidophilus it consists of two antennomeres).
Description: Length 1.05–1.28 mm. Body elongate, oval and convex ( Figs 2D View Figure 2 , 3A View Figure 3 , 4A View Figure 4 ), dorsum smooth ( Fig. 3E View Figure 3 ) or sparsely setose ( Fig. 2B View Figure 2 ); setae, if present, associated with micropunctures. Metathoracic wings present ( Fig. 4A View Figure 4 ) in at least in two species (in. B. damgaardi not observed). Head transverse, eyes large ( Fig. 2G View Figure 2 ), without interfacetal setae, dorsally not margined ( Fig. 2I View Figure 2 ). Frons ( Fig. 2G View Figure 2 ) about as long as length of an eye, emarginate around antennal insertions, lateral sides margined. Subantennal grooves shallow, extending behind eyes. Antenna consisting of ten antennomeres ( Fig. 2I View Figure 2 ) with three apical forming distinct club ( Fig. 3B View Figure 3 ). Terminal maxillary palpomere knife-like (cultriform) ( Fig. 3F View Figure 3 ). Pronotum transverse ( Fig.3C View Figure 3 ), disc with complete line separating anterior corners ( Figs 3E View Figure 3 , 4E View Figure 4 ), posterior and lateral margins bordered ( Fig. 4E View Figure 4 ), anterior edge not margined. Prosternum with prominent chin-piece ( Figs 2G View Figure 2 , 3B View Figure 3 ), prosternal process about 0.6× as wide as procoxa. Elytral surfaces with fine punctures, with sutural line present along posterior half length ( Figs 2E View Figure 2 , 3D View Figure 3 ), epipleura reaching posterior border of ventrite 3, with bordering line reaching posterior margin of ventrite 2 ( Figs 2A View Figure 2 , 3A View Figure 3 ). Scutellar shield heart-like ( Figs 3C View Figure 3 , 4E View Figure 4 ). Mesoventral process transverse ( Figs 2G View Figure 2 , 4B View Figure 4 ), raised anteriorly. Metaventrite ( Figs 2F View Figure 2 , 3A View Figure 3 ) transverse, 1.5× longer than abdominal ventrite 1, mesometaventral junction arcuate anteriorly, discrimen visible in posterior half, metanpisternum with short, transverse sulcus near apical margin, postcoxal lines complete or incomplete laterally, straight or descending. Abdomen with six ventrites, ventrite 6 partially visible ( Fig. 3A View Figure 3 ), ventrite 1 as long as ventrites 2 and 3 combined, postcoxal lines arcuate and incomplete laterally, accessory line long, often joining postcoxal line at apex forming v-shape ( Fig. 4C View Figure 4 ). Legs slender with femora slightly swollen ( Fig. 3A View Figure 3 ), tarsi with four tarsomeres ( Fig. 2C View Figure 2 ), pretarsal claws barely appendiculate.
Etymology: First part of the name is derived from the Baltic Sea, the second refers to the genus Parasidis to which it is related.
KEY TO THE SPECIES OF BALTOSIDIS
1. Elytra covered with long erect setae ( Fig. 2B View Figure 2 ), metaventral postcoxal lines slightly descending laterally ( Fig. 2F View Figure 2 ), abdominal accessory line short, widely separated from postcoxal line ( Fig. 2H View Figure 2 ....... B. damgaardi
- elytra covered with short, indistinct setae or glabrous, metaventral postcoxal lines straight or slightly recurved, abdominal accessory line long, fused with postcoxal line or shortly separated in apical part ..... 2
2. Pronotum and elytra covered with fine setae ( Fig. 4D, E View Figure 4 ), abdominal accessory line fused with postcoxal line, forming complete v-shape ( Fig. 4C View Figure 4 ) ................................................................................... B. szadziewskii
- pronotum and elytra glabrous ( Fig. 3C, E View Figure 3 ), abdominal accessory line does not reach postcoxal line, v-shape incomplete apically ( Fig. 3G View Figure 3 ) ............................................................................................................ B. damzeni
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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Phylum |
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Class |
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Order |
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SubOrder |
Polyphaga |
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SuperFamily |
Coccinelloidea |
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Family |
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SubFamily |
Microweiseinae |
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Tribe |
Microweiseini |