Trichosiopsis gretae
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BibTeX: @article{Heller2012SchriftendesNationalparksGesäuse7, RIS/ Endnote: TY - JOUR Wikipedia/ Citizendium: <ref name="Heller2012Schriften des Nationalparks Gesäuse7">{{Citation |
Ordo: Diptera
Familia: Sciaridae
Genus: Trichosiopsis
Name
Trichosiopsis gretae (Heller, 2012) – Wikispecies link – ZooBank link
- Leptosciarella (Leptosciarella) gretae Heller, 2012[1]: 197-198
Type material
Holotype ♂, no 7575 in ZSCM, leg. Lehmann, 10.07.2009
Type locality
Germany, Bavaria, National Park Berchtesgaden, fountain between Mittereisalm and Hirschbichl, 12°48‘30”E, 47°33‘30”N, 1.320 m
Paratypes
Germany: 1 ♂, Bavaria, National Park Berchtesgaden, Klaustal, fountain SW Mittereisalm, 1.350 m, Lehmann, PKHH 7574; Austria: 1 ♂, Styria, National Park Gesäuse, Untere westliche Rohrquelle, Weigand, 01.07.2007, PKHH 7565.
Other material studied
Finland: 1 ♂, Lk, Savukoski, Tyroja; spruce forest, Malaise trap, Salmela, 01.07.–05.08.2014, ZFMK-TIS-2544982
Description (male)
Head. Eye bridge 4 rows of facets. LW-index of 4th antennal flagellar segment 2.2–2.5; neck 0.27–0.33 of segment width; Transition of basal part to neck pronounced. Colour of neck unicolour. Antennal hairs shorter than segment width; sparse; salient. Palps darkened; long; palpomeres 3. First palpomere elongate; with 1–3 bristles; with only some sparse sensillae. Second palpomere elongate. Third palpomere as long as first segment. Thorax. Colour brown, or reddish. Notum unicolorous. Thoracic setae long and strong; dark. Mesonotum with some weaker central bristles. Posterior pronotum setose. Postpronotal setae 1–3; strong. Laterotergite bare. Legs. Colour yellow. Hind coxae of same colour as femora. Hairs on fore coxae black. Frontal tibia with a patch of setae. Front tibial organ dark. Front tibial organ not bordered. Tibial setae on hind legs normal, shorter than tibial width. Tibial spurs of equal length. Claws untoothed. Wings. Wings slightly darkened; of normal shape. Wing membrane without macrotrichia. Wing venation weak, with faint m-base. M-fork of normal shape. R1 inserting at or slightly before base of m-fork; posterior veins with macrotrichia; stM with a few macrotrichia; cuA1 and cuA2 mainly with macrotrichia; bM bare; r-m with a few setae, or mostly setose; bM:r-M 0.65–0.85; st-Cu:bM 0.15–0.35; r1:r 1.1–1.35; C:w 0.7–0.8. Halteres dark; of normal length. Abdomen. Abdominal setae strong and dense; dorsally dark; ventrally dark. Hypopygium concolour with abdomen; Length/Width 0.65–0.75 longer than wide. Base of gonocoxites with normal, weak hairs; gonocoxites narrowly separated; inner margin of gonocoxites normally U-shaped; inner part of hypopygium bare, or scarcely setose; elongated setae on valves of hypopygium absent. Gonostylus elongate; 2.2–2.5 × longer than wide; Inner margin concave; apex equally rounded, or with one obtuse angle. Apical tooth present; 1.05–1.25 × longer than broad; strong. Awl-like setae normal; below apex present. Megasetae on inner part of gonostylus absent. Whiplash-hair missing. Tegmen 0.5–0.7 × longer than broad; equally rounded; normal; Central process absent. Length of aedeagus/hypopygium 35–40 %; Aeadeagal apical structure absent. Measurements. Body size 3–3.6 mm. Wing length 2.9–3.4 mm.
Diagnosis
Trichosiopsis gretae is a typical, large representative of the genus. It takes an intermediate position between the species around Trichosiopsis pilosa with dorso-apically rounded gonostyli and those species around Trichosiopsis rejecta having the tip of the gonostyli dorsally angulate. The broad and strong beak-like apical tooth distinguishes Tr. gretae from other congeneric species. The tight, but clear basal separation of the gonocoxites is also very characteristic. Such a fine interstice is normally only observed in species with intercoxal lobes, such as Trichosiopsis subpilosa.
DNA Barcoding
The COI sequence is assigned to BIN BOLD:ADA7224 (n=1, K2P: 10.4%).
Etymology
The species was named after the author´s grandmother Grete Hagemeister (21.05.1911-16.06.2013) in honour of her 100th birthday on the 21th of May 2011.
Ecology
The type material was found in alpine regions in relation with fountains. Nevertheless a direct relation to fountains is not proven, as the specimens were collected by sweep netting in the course of a fountain ecology project and may have been captured only occasionally at these places. The additional record in a spruce forest in Finnish Lapland indicates a boreo-alpine distribution.
Distribution
Austria[1], Finland, Germany[1].
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