Drymeia cantabrigensis (Huckett, 1965)

Savage, Jade & Sorokina, Vera S., 2021, Review of the North American fauna of Drymeia Meigen (Diptera, Muscidae) and evaluation of DNA barcodes for species-level identification in the genus, ZooKeys 1024, pp. 31-89 : 31

Drymeia cantabrigensis (Huckett, 1965) Fig. 6A

Eupogonomyia cantabrigensis Huckett, 1965a: 300.

Type material examined.

Eupogonomyia cantabrigensis - Holotype male labelled " Cambridge Bay /N.W. T. 18.VII. 1950 / G. K. Sweatman "; "Type [red]"; " HOLOTYPE / CNCNo. 8367 [red]"; " Eupogonomyia / Drymeia cantabrigensis Huck./ det. H.C. Huckett " ( CNC). Allotype female labelled " Cambridge Bay /N.W. T. 20.VII. 1950 / E. H. N. Smith "; "Allo [red]"; " ALLOTYPE / CNCNo. 8367 [red]"; " Eupogonomyia / Drymeia cantabrigensis Huck./ det. H.C. Huckett " ( CNC). 3 paratypes males: " Cambridge Bay /N.W. T. 20.VII. 1950 / E. H. N. Smith "; " PARATYPE /No. 8367 [yellow]"; " Eupogonomyia / Drymeia cantabrigensis Huck./ det. H.C. Huckett " ( CNC). 1 paratype male, same as previous but 18.VII. 1950 . 2 paratypes males: " Cambridge Bay /N.W. T. 20.VII. 1950 / G. K. Sweatman "; " PARATYPE /No. 8367 [yellow]"; " Eupogonomyia / Drymeia cantabrigensis Huck./ det. H.C. Huckett " ( CNC). 1 paratype male, same as previous but 21.VII.1950 .

Other material examined.

More than 100 males and females: Nearctic: Canada: North West Territories: Arviat [formerly Eskimo point], Hooper Is., Mould Bay (Prince Patrick Is.), Sachs Harbour, Victoria Is.; Nunavut: Banks Is., Cambridge Bay , Kugluktuk, Masik Riv. (Banks I.) ; Yukon Territory: Herschel Is. ( BUIC, CNC, LEM) .

Distribution.

Nearctic: Canada (Northwest Territories, Nunavut, Yukon Territory) .

DNA Barcode.

BOLDBIN: BOLD:AAD7664 (BIN merge with several other species, see Fig. 25 ). See Suppl. material 1: Table S1 for GenBank accession numbers.

Remarks.

While always lacking an anteroventral bristle on the midtibia, the females of this species are sometime indistinguishable from those of D. setibasis where this bristle is either present or absent. DNA barcodes for D. cantabrigensis were very similar and in some case identical to those of other species forming a cluster (or BIN merge) of seven named species (including D. setibasis ) in BOLD:AAD7664 (Fig. 25 ). The males can be easily identified based on the distinctive chaetotaxy of the mid femur but since DNA barcodes do not discriminate between D. cantabrigensis and several other species including D. setibasis , the identification of females from these two species can be problematic in the Nearctic region.

Figures

Figure 6. Male mid femur, anterior view (except G, H, L) A D. cantabrigensis B D. setibasis C D. vockerothi D D. profrontalis E D. glacialis F D. quadrisetosa G D. santamonicae, antero-dorsal view H D. amnicola, postero-dorsal view I D. similis J D. amnicola K D. hucketti L D. aldrichi, ventral view. Scale bars: 0.25 mm.

Figure 25. Neighbour-joining tree based on p-distance of all COI sequences (> 550 bp) for which specimens were examined. Each terminal includes the species name, BOLD process ID number, country of collection, and Barcode Index Number. Red text indicates the presence of more than one named species grouped under a single BIN (BIN merge).