View source for Trichosiopsis antimelanoma

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{{Treatment start
| Ordo = Diptera
| Familia = Sciaridae
| Genus = Trichosiopsis
| Specific name = antimelanoma
| Infraspecific name =
| Taxon rank = species
| Taxon authority =
| Taxon status = unpublished
| Nomenclature citation =
| Wikispecies page name =
| ZooBank ID =
}}

==Type material==
Holotype: ♂, 15.–31.07.2016, Malaise Trap, leg. Jostein Kjærandsen, TSZD-JKJ-104039 in TSZD

===Type locality===
Norway, Troms, Tromsø, Hansmarkmyra, 69.648 N, 18.918 E

==Description (male)==
'''Head'''. Eye bridge 4–5 rows of facets. Antenna unicolour. LW-index of 4<sup>th</sup> flagellomere 1.6–1.9; neck 0.2–0.3 × segment width; transition of basal part to neck pronounced. Colour of neck unicolour. Antennal setae shorter than segment width; of normal strength; dense. Sensillae present. Antennal setae salient. Palpus darkened; of normal length; palpomeres 3. First palpomere of normal shape; with 4–5 setae; with only sparse sensilla. Second palpomere short and oval. Third palpomere as long as first. '''Thorax'''. Colour brown, or reddish. Notum unicolour. Thoracic setae long and strong; black. Posterior pronotum setose. Postpronotal setae 3; strong. Mesothoracic sclerites bare. ''Legs''. Colour yellow. Hind coxa darkened. Setae on front coxa black. Front tibial organ as patch of setae; dark; front tibial organ not bordered. Tibial setae on hind legs normal, shorter than tibial width. 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. R<sub>1</sub> ending at or slightly before base of m-fork; posterior veins with macrotrichia; stM bare; CuA<sub>1</sub> and CuA<sub>2</sub> mostly with macrotrichia; bM bare; r-m mostly setose; bM:r-M 1–1.2; st-Cu:bM 0.4–0.6; R<sub>1</sub>:R 1.25–1.45; c:w 0.72–0.8. Halter darkened; of normal length. '''Abdomen'''. Abdominal setae strong; dense; on tergites black; on sternites black. Hypopygium concolour with abdomen; LW-index 0.7–0.85. Base of gonocoxites with weak setae; gonocoxites broadly separated; inner margin of gonocoxites typically U-shaped; inner membrane of hypopygium scarcely setose; ventral margin of gonocoxite with short setae. Gonostylus elongate; LW-index 2.5–2.75; Inner margin concave; apex tapered, or equally rounded. Apical tooth present; without internal structure; of medium strength; LW-Index 2–3. Awl-like setae normal; present beneath apical tooth. Megasetae absent. Whiplash-hair absent. Tegmen 0.55–0.7 × longer than broad; rectangular with rounded edges; without special features; central process absent. Length of ejaculatory apodeme/hypopygium 18–26 %; base of ejaculatory apodeme present. Field with aedeagal teeth inconspicuous. '''Measurements'''. Body size 2.5–3.2 mm. Hind tibia 1.45–1.6 mm. Wing length 2.7–3.2 mm.

==Diagnosis==
''Trichosiopsis antimelanoma'' is placed in the ''Trichosiopsis pilosa'' group by the presence of short setae at the base of the gonocoxites and a not very strong apical tooth, which is partially covered by a dorsal bulge. The species is similar to ''[[Trichosiopsis melanopilosa]]'', but has a still more tapered gonostylus. It is differing from all other species in that group by the colourful yellow legs and the nearly or completely bare m-base.

===DNA Barcoding===
COI sequences are assigned to the following BINs:
*{{BIN|ADL1265}}  (n=1, K2P: 4.98%)
*{{BIN|ADG6568}} (n=1, K2P: 4.98%)

==Etymology==
The name was coined as being similar to ''melanoma'' because it is located at the opposite position in the phylogenetic clade of the ''melanoma'' complex.

==Ecology==
''Tr. melanoma'' appears to be a boreo-alpine species.

==Distribution==
Austria, Norway.

==Subspecies list==
''[[Trichosiopsis antimelanoma antimelanoma]]'' -
''[[Trichosiopsis antimelanoma remschakae]]'' 

==Images==
{{Gallery | lines=3 | width=300
|1= File:TSZD-JKJ-104039 M.jpg|2= '''Figure 1.''' ''Trichosiopsis antimelanoma'' male (holotype), habitus, scale 1.0 mm
|3= File:TSZD-JKJ-104039 H.jpg|4= '''Figure 2.''' ''Trichosiopsis antimelanoma'' male (holotype), hypopygium, scale 0.1 mm
|5= File:TSZD-JKJ-104039 S.jpg|6= '''Figure 3.''' ''Trichosiopsis antimelanoma'' male (holotype), gonostylus (ventral view), scale 0.1 mm
|7= File:KH7554 S.jpg|8= '''Figure 4.''' ''Trichosiopsis antimelanoma remschakae'' male (holotype), gonostylus, scale 0.1 mm
|9= File:TSZD-JKJ-104039 G.jpg|10= '''Figure 5.''' ''Trichosiopsis antimelanoma'' male (holotype), aedeagal complex, scale 0.1 mm
|11= File:TSZD-JKJ-104039 F.jpg|12= '''Figure 6.''' ''Trichosiopsis antimelanoma'' male (holotype), 4<sup>th</sup> antennal flagellar segment, scale 0.1 mm
|13= File:TSZD-JKJ-104039 P.jpg|14= '''Figure 7.''' ''Trichosiopsis antimelanoma'' male (holotype), palpus, scale 0.1 mm
|15= File:TSZD-JKJ-104039 L.jpg|16= '''Figure 8.''' ''Trichosiopsis antimelanoma'' male (holotype), wing, scale 1.0 mm
}}

==References==
<references />