Trichosiopsis subviatica subelongata

Taxonavigation

Ordo: Diptera
Familia: Sciaridae
Genus: Trichosiopsis
Species: Trichosiopsis subviatica

Name

Trichosiopsis subviatica subelongata  unpublished

Type material

Holotype: ♂, 16.5.–2.6.2014, Malaise trap, leg. Rulik et al., ZFMK-TIS-2564680 in ZFMK

Type locality

Germany, Rhineland-Palatinate, Niederzissen

Barcoded material

Stadium	Country	Province	Locality	Habitat	Method	Date	Collector	Collection Number	Collection	Latitude	Longitude	Elevation (m)
1 ♂ (holotype)	Germany	Rhineland-Palatinate	Niederzissen, Bausenberg	Trockenrasen	Malaise Trap	16.5.–2.6.2014	Rulik et al.	ZFMK-TIS-2564680	ZFMK	50.465	7.222	321
1 ♂	Germany	Rhineland-Palatinate	Niederzissen, Bausenberg	Trockenrasen	Malaise Trap	16.5.–2.6.2014	Rulik et al.	ZFMK-TIS-2564681	ZFMK	50.465	7.222	321
1 ♂	Germany	Rhineland-Palatinate	Niederzissen, Bausenberg	Trockenrasen	Malaise Trap	16.5.–2.6.2014	Rulik et al.	ZFMK-TIS-2564650	ZFMK	50.465	7.222	321
1 ♂	Germany	Rhineland-Palatinate	Niederzissen, Bausenberg	Trockenrasen	Malaise Trap	9.4.–24.4.2014	Rulik et al.	ZFMK-TIS-2559742	ZFMK	50.465	7.222	321
1 ♂	Germany	Rhineland-Palatinate	Heppingen-Gimmingen, Landskrone altes Burggelände	Wiese, altes Burggelände	Malaise Trap	2.5.–16.5.2013	Rulik et al.	ZFMK-TIS-2559727	ZFMK	50.552	7.172	271
1 ♂	Germany	Rhineland-Palatinate	Heppingen-Gimmingen, Landskrone altes Burggelaende	Wiese, altes Burggelände	Malaise Trap	2.5.–16.5.2013	Rulik et al.	ZFMK-TIS-2559726	ZFMK	50.552	7.172	271

Other material studied

Germany: Rhineland-Palatinate, Gönnersdorf, Eifel, orchard, Malaise trap, Cölln, 30.4.-07.05.1994, PKHH 1901; 5 ♂, Kirchheimbolanden, Nature Reserve Albertskreuz, Malaise trap, Doczkal, 23.5.-07.06.2002, PKHH 4885/4888/4889/4892; Sweden: 14 ♂, Östergötland, Omberg, Boskogsreservatet Omberg: beech forest, Malaise trap, Swedish Malaise Trap Project, 28.5.-05.07.2005, NHRS 1496-1501, 1584-1587; PKHH 6052; 3 ♂, Skåne, Simrishamn, Stenshuvud National Park: Svabeholmsskog, hornbeam forest, Malaise trap, Swedish Malaise Trap Project, 22.5.-20.06.2005, PKHH 7230, 7243, 7256; 1 ♂, Södermannland, Södertälje, Tullgarns näs, Rävsalaviken, mixed forest next to pasture, Malaise trap, Swedish Malaise Trap Project, 3.7.-19.08.2004, PKHH 7475.

Description (male)

Head. Eye bridge 5 rows of facets. Antenna unicolour. LW-index of 4^th flagellomere 2.4–2.7; neck 0.26–0.36 × segment width; transition of basal part to neck pronounced. Colour of neck unicolour. Antennal setae shorter than segment width; of normal strength; dense; adjacent. Palpus darkened; of normal length; palpomeres 3. First palpomere of normal shape, or thickened; with 4–7 setae; with only sparse sensilla. Second palpomere short and oval. Third palpomere as long as first. Thorax. Colour dark brown, or brown. Notum unicolour. Thoracic setae long and strong; black. Posterior pronotum bare. Mesothoracic sclerites bare. Legs. Colour yellow-brown. Hind coxa darkened. Setae on front coxa black, or darkened. 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. R₁ ending at or slightly before base of m-fork; posterior veins with macrotrichia; stM mostly with macrotrichia; CuA₁ and CuA₂ mostly with macrotrichia; bM bare; r-m with few setae, or mostly setose; bM:r-M 1–1.2; st-Cu:bM 0.25–0.4; R₁:R 1.6–1.8; c:w 0.67–0.77. Halter darkened; of normal length. Abdomen. Abdominal setae strong; dense; on tergites black; on sternites black. Hypopygium concolour with abdomen; LW-index 0.6–0.8. Base of gonocoxites with strong 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 1.9–2.2; Inner margin concave; apex tapered, or equally rounded. Apical tooth present; without internal structure; of medium strength; LW-Index 1.4–2.4. 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 25–33 %; base of ejaculatory apodeme present. Field with aedeagal teeth inconspicuous. Measurements. Body size 3.8–4.5 mm. Hind tibia 1.75–1.9 mm. Wing length 3.1–3.6 mm.

Diagnosis

Trichosiopsis subviatica subelongata is nearly as large as Trichosiopsis subviatica heikendorfensis, but the gonostylus is differently shaped and apically more tapered. The posterior pronotum is as well bare and the legs are darkened.

DNA Barcoding

The COI sequence is assigned to one part of BIN BOLD:ACK0022 (average distance 0.16%, max. 0.30%, n=6).

Etymology

The species name refers to the similarity with Tr. elongata. which is a synonym of Tr. subviatica.

Discussion

This subspecies is genetically more homogeneous than Tr. subviatica heikendorfensis. Most of the specimens were at first sight not identified correctly as Tr. subviatica, which is a good indication, that this is indeed a different taxon.

Distribution

Germany, Sweden.

Images

Figure 1. Trichosiopsis subviatica subelongata male, habitus, scale 1 mm  Figure 2. Trichosiopsis subviatica subelongata male, hypopygium, scale 0.1 mm  Figure 3. Trichosiopsis subviatica subelongata male, gonostylus (ventral view), scale 0.1 mm  Figure 4. Trichosiopsis subviatica subelongata male, gonostylus (dorsal view), scale 0.1 mm  Figure 5. Trichosiopsis subviatica subelongata male, aedeagal complex, scale 0.1 mm  Figure 6. Trichosiopsis subviatica subelongata male, 4th antennal flagellar segment, scale 0.1 mm  Figure 7. Trichosiopsis subviatica subelongata male, wing, scale 1 mm