Sminthurinus lawrencei
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publication ID |
https://doi.org/ 10.25674/SO94iSS3id283 |
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persistent identifier |
https://treatment.plazi.org/id/A30F1A72-FF89-4C25-FC19-0582FBA32860 |
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treatment provided by |
Felipe |
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scientific name |
Sminthurinus lawrencei |
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Sminthurinus lawrencei View in CoL
Summarizing the identification of newly collected specimens, re-examination of previously collected material vastly increased the number of previously published occurrences for S. lawrencei over those previously recorded in North-Western Europe ( Table 1, Fig. 4 View Figure 4 ). Most of these records are from the Netherlands. Additional records supported by collected material originate from Belgium, thus confirming the presence of the species there, too.
The use of the colouration and shape of the inter-ocular vesicles is a trait that was first used since 2015 by the third author, a character to distinguish between the dark Sminthurinus- specieson digital images. By examining the collection material, this character is found to reliably separate the otherwise uniformly black S. lawrencei from S. niger and S. concolor . In S. lawrencei , these white inter-ocular vesicles are small, roundish with three teeth pointing inwards in an adult specimen. This inter-ocular vesicle does not advance beyond ocellus C and the distance between the left and right inter-ocular vesicle is more than twice that of the inter-ocular vesicle diameter ( Fig. 5A View Figure 5 ). In S. niger , this white inter-ocular vesicle circumvents most of the upper and posterior sides of the ocular fields, creating a large crescent shape in full-grown adults ( Fig. 5B View Figure 5 ). In S. concolor , these inter-ocular vesicles are much larger than in S. lawrencei and are not crescent shaped. The distance between these inter-ocular vesicles is less than twice that of the inter-ocular vesicle diameter and features a single, large anterior indentation ( Fig. 5C View Figure 5 ). The listing in table 1 is not exhaustive for images from public images due to the large number of records available, which are nearly always misidentified S. niger . However, several of such photographs were taken from France and Canada, from which S. lawrencei was not previously recorded and these are thus included in the list ( Table 1, Fig. 4 View Figure 4 ).
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.