Difference between revisions of "Bradysia laurentia"
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==Images== | ==Images== | ||
{{Gallery | lines=3 | width=300 | {{Gallery | lines=3 | width=300 | ||
| − | |1= File:BIOUG04074-G03 M.jpg|2= '''Figure 1.''' ''Bradysia laurentia'' male, holotype, habitus | + | |1= File:BIOUG04074-G03 M.jpg|2= '''Figure 1.''' ''Bradysia laurentia'' male, holotype, habitus, scale 1 mm |
| − | |3= File:BIOUG04074-G03 H.jpg|4= '''Figure 2.''' ''Bradysia laurentia'' male, holotype, hypopygium | + | |3= File:BIOUG04074-G03 H.jpg|4= '''Figure 2.''' ''Bradysia laurentia'' male, holotype, hypopygium, scale 0.1 mm |
| − | |5= File:BIOUG04074-G03 S.jpg|6= '''Figure 3.''' ''Bradysia laurentia'' male, holotype, gonostylus (ventral view) | + | |5= File:BIOUG04074-G03 S.jpg|6= '''Figure 3.''' ''Bradysia laurentia'' male, holotype, gonostylus (ventral view), scale 0.1 mm |
| − | |7= File:BIOUG04074-G03 G.jpg|8= '''Figure 4.''' ''Bradysia laurentia'' male, holotype, aedeagal complex | + | |7= File:BIOUG04074-G03 G.jpg|8= '''Figure 4.''' ''Bradysia laurentia'' male, holotype, aedeagal complex, scale 0.1 mm |
| − | |9= File:BIOUG04074-G03 F.jpg|10= '''Figure 5.''' ''Bradysia laurentia'' male, holotype, 4<sup>th</sup> antennal flagellar segment | + | |9= File:BIOUG04074-G03 F.jpg|10= '''Figure 5.''' ''Bradysia laurentia'' male, holotype, 4<sup>th</sup> antennal flagellar segment, scale 0.1 mm |
| − | |11= File:BIOUG04074-G03 L.jpg|12= '''Figure 6.''' ''Bradysia laurentia'' male, holotype, wing | + | |11= File:BIOUG04074-G03 L.jpg|12= '''Figure 6.''' ''Bradysia laurentia'' male, holotype, wing, scale 1 mm |
}} | }} | ||
==References== | ==References== | ||
<references /> | <references /> | ||
Latest revision as of 18:41, 2 January 2021
Ordo: Diptera
Familia: Sciaridae
Genus: Bradysia
Name
Bradysia laurentia unpublished
Type material
Holotype ♂, 16.–20.06.2012, intercept trap, wetland, BIOUG04074-G03 in BIOUG, leg. BIOBus 2012
Type locality
Canada, Alberta, Banff National Park, Corral Creek
Barcoded material studied
| Stadium | Country | Province | Locality | Habitat | Method | Date | Collector | Collection Number | Collection | Latitude | Longitude | Elevation (m) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 ♂ holotype | Canada | Alberta | Banff National Park, Corral Creek old road | Wetland | Intercept Trap | 20.06.2012 | BIOBus 2012 | BIOUG04074-G03 | BIOUG | 51.407 | -116.154 | 1539 |
| 1 ♂ | Canada | Saskatchewan | Prince Albert NP, Boundary Bog Trail | Wetland | Free Hand | 18.06.2010 | BIObus 2010 | 10BBCDIP-1000 | BIOUG | 53.909 | -106.021 | 584 |
| 1 ♂ | Canada | Manitoba | Churchill, 10 km E Churchill, Launch Road | Malaise Trap | 21.07.2009 | JM Cumming | 09PROBE-JW1234 | BIOUG | 58.7543 | -93.9968 | ||
| 1 ♂ | Canada | Manitoba | Churchill, 10 km E Churchill, Launch Road | Malaise Trap | 21.07.2009 | JM Cumming | 09PROBE-JW1233 | BIOUG | 58.7543 | -93.9968 |
Description (male)
Head. Eye bridge 3 rows of facets. Antenna unicolour. LW-index of 4th flagellomere 1.6–2; neck 0.26–0.37 × segment width; Transition of basal part to neck pronounced. Colour of neck unicolour. Antennal setae shorter than segment width; of normal strength, or strong; dense; salient. Palpus darkened; of normal length; palpomeres 3. First palpomere of normal shape; with 4–6 bristles; with delimited sensillary field. Second palpomere short, oval. Third palpomere shorter than first segment. Thorax. Colour brown. Notum unicolour. Thoracic setae weak; white. Posterior pronotum bare. Mesothoracic sclerites bare. Legs. Colour brown. Hind coxa of same colour as femora. Hairs on fore coxa bright. Front tibia apically with a distinct, delimited comb. Front tibial organ bright. Tibial comb undivided. Tibial comb with 5 bristles. Front tibial organ not bordered. Tibial setae on hind legs weak, inconspicuous. Tibial spurs of equal length. Claws untoothed. Wing. Wing slightly darkened; of normal shape. Wing membrane without macrotrichia. Wing venation weak, with faint stM. M-fork of normal shape. R1 ending clearly before base of m-fork; bM bare; r-m bare; bM:r-M 0.9–1.2; st-Cu:bM 0.5–0.7; R1:R 0.55–0.7; c:w 0.57–0.66. Halter darkened; of normal length. Abdomen. Abdominal setae weak. Abdominal setae sparse. Tergal setae white; sternal setae white. Hypopygium concolour with abdomen; 0.5–0.62 × longer than wide. Base of gonocoxites bare; gonocoxites narrowly separated; inner margin of gonocoxites normally U-shaped; inner membrane of hypopygium bare; elongated setae on gonocoxites absent. Gonostylus elongate; 3.2–3.5 × longer than wide; Inner margin straight; apex equally rounded. Apical tooth dorsally present; shorter than subapical megasetae; 3.5–5 × longer than broad; of normal strength. Apical tooth without internal structure. Awl-like setae absent. Subapical megasetae present. Number of megasetae 12–15; megasetae thick; megasetae straight; megasetae in one group. Position of basalmost megaseta 15–23 % from top. Whiplash-hair absent. Tegmen 0.6–0.75 × longer than broad; equally rounded; without special features; Central process absent. Length of ejaculatory apodeme/hypopygium 15–23 %; Aeadeagal apical structure present. Field with aedeagal teeth present. Measurements. Body size 2–2.5 mm. Hind tibia 0.7–0.8 mm. Wing length 1.7–2.1 mm.
Diagnosis
Bradysia laurentia has an elongate gonostylus like Bradysia bellstedti, Bradysia quercina and Bradysia parvifinis. It can be distinguished from these three by the less conspicuous dorsal tooth. The antennal flagellomeres are shorter and more strongly setose than in the other species. A peculiar character of B. laurentia is, that the gonocoxites are nearly fused, but leave a U-shaped notch with some dense microtricha, which is more conspicuous than in the neighbouring species except for Bradysia valeriae. For further distinction see under the latter.
DNA Barcoding
The COI sequence is assigned to BIN BOLD:AAL7888 (average distance 0.52%, max. 1.76%, n=91, K2P: 5.94%). The nearest neighbours is Bradysia valeriae and afterwards B. parvifinis and B. bellstedti with a genetic distance of 10.52 %.
Discussion
The species was first identified by the close genetic similarity to the other members of the Bradysia nitidicollis group. Only for that reason reference specimens were requested from the Biodiversity Institute of Ontario, and the species proved indeed to be a member of that group.
Etymology
The species epithet refers to the regional name "Laurentia", the ancient geological core of North America.
Distribution
Canada.
Images
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