Sciara lackschewitzi

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Taxonavigation

Ordo: Diptera
Familia: Sciaridae
Genus: Sciara

Name

Sciara lackschewitzi (Lengersdorf, 1934) – Wikispecies link

  • Lycoria lackschewitzi Lengersdorf, 1934 — Lengersdorf (1934): 57, fig. 4[1]

Type material

Lectotype ♂, in ZMHB, leg. Lackschewitz, 26.06.1932.

Type locality

Kurl. Kalwen, Latvia.

Additional material examined

Finland: 1 ♂, Li, Inari, Tsarmitunturi, 1.viii.2003, Salmela (no. 9328 in MZH); 1 ♂, Obb: Tervola, Pisavaara Strict Nature Reserve, Scorpidium rich fen, 2.viii.2004, Salmela (no. 9329 in MZH).

Description (male)

Head. Eye bridge 3–4 rows of facets. LW-index of 4th antennal flagellar segment 3–3.6; neck 0.4–0.5 of segment width. Antennal hairs longer than segment width; sparse; salient. 1st palpomere with 4–8 bristles. Third palpomere as long as first segment. Thorax. Colour brown. Thoracic setae long and strong; dark. Mesonotum bare. Posterior pronotum setose. Postpronotal setae 1–4; fine. Legs. Colour yellow-brown. Hind coxae darkened. Hairs on fore coxae darkened. Frontal tibia with a patch of setae. Front tibial organ dark, not bordered. Tibial setae on hind legs weak, inconspicuous. Claws untoothed. Wings. Radial vein r1 inserting at or slightly before base of m-fork; posterior veins with macrotrichia; stM bare; cuA1 and cuA2 mainly with macrotrichia; bM bare; r-m bare; bM:r-M 1.22–1.45; st-Cu:bM 0.05–0.18; r1:r 0.9–1.1; C:w 0.66–0.76. Abdomen. Abdominal setae strong and dense; dorsally dark; ventrally dark. Length/Width 0.56–0.76 longer than wide. Base of gonocoxites bare; gonocoxites fused; inner margin of gonocoxites narrowly U-shaped, or normally U-shaped; inner part of hypopygium bare. Gonostylus elongate; 1.7–2 × longer than wide; Inner margin concave; apex nearly rectangular. Apical tooth absent. Awl-like setae long; below apex absent. Megasetae on inner part of gonostylus absent. Tegmen 1.2–1.45 × longer than broad; rectangular with sharp edges. Length of aedeagus/hypopygium 21–28 %; Aeadeagal apical structure present. Measurements. Body size 3.2–4 mm. Wing length 2.6–3.2 mm.

Etymology

The species was named after the collector of the type specimen, the Latvian Entomologist Paul Lackschewitz (1865-1936).

Ecology

This apparently rare species was mainly found in European bogs and mires between the 53°N and 68°N.

Relationships

Sciara lackschewitzi is similar to Sciara mendax, but can be distinguished by the lack of macrotrichia on the wing membrane. Tuomikoski (1960: 15)[2] recognized the similarity with Sciara helvola, from which it can be distinguished by the completely dark colour and the less pronounced apical lobe at the gonostyles.

Distribution

Czech Republic?[3], Finland[4], Great Britain[5], Japan[6][7] , Latvia[1].

Remarks

The species concept of Sciara lackschewitzi has been unclear for some time. Menzel (1992: 260-261, figs 1-4)[8] redescribed and figured the lectotype, but erroneously identified it with Sciara mendax. Menzel & Heller (2007: 224-225)[9] separated both species again. Only very few specimens of this species are known, which may be due to the very specific habitat preferences. Nevertheless the distribution has a wide range from Wales in the west to Japan in the east of the Palaearctic Region. The Check List record from 1997 for the Czech and Slovakian Republic[3] was omitted in the current Check List[10] because no specific record is published.

Images

Figure 1. Sciara lackschewitzi male, hypopygium, scale 0.1 mm
Figure 1. Sciara lackschewitzi male, hypopygium, scale 0.1 mm 
Figure 2. Sciara lackschewitzi male, gonostylus, scale 0.1 mm
Figure 2. Sciara lackschewitzi male, gonostylus, scale 0.1 mm 
Figure 3. Sciara lackschewitzi male, tegmen, scale 0.1 mm
Figure 3. Sciara lackschewitzi male, tegmen, scale 0.1 mm 
Figure 4. Sciara lackschewitzi male, head, scale 0.1 mm
Figure 4. Sciara lackschewitzi male, head, scale 0.1 mm 
Figure 5. Sciara lackschewitzi male, 4th antennal flagellar segment, scale 0.1 mm
Figure 5. Sciara lackschewitzi male, 4th antennal flagellar segment, scale 0.1 mm 
Figure 6. Sciara lackschewitzi male, wing, scale 1 mm
Figure 6. Sciara lackschewitzi male, wing, scale 1 mm 

References

  1. ↑ 1.0 1.1 Lengersdorf, F. 1934: Neue Sciariden aus Palästina und Lettland. Mitteilungen der Deutschen Entomologischen Gesellschaft, 5(7-8), 55–58.
  2. ↑ Tuomikoski, R. 1960: Zur Kenntnis der Sciariden (Dipt.) Finnlands. Annales Zoologici Societatis Zoologicae Botanicae Fennicae “Vanamo”, 21, 1–164.
  3. ↑ 3.0 3.1 Rudzinski, H.-G.; Košel, V. 1997: Sciaridae. In: M. Chvála (Ed.), Check List of Diptera (Insecta) of the Czech and Slovak Republics. Karolinum - Charles University Press, Prague.
  4. ↑ Salmela, J.; Vilkamaa, P. 2005: Sciaridae (Diptera) from central Finland: faunistics and taxonomy. Entomologica Fennica, 16, 287–300.
  5. ↑ Menzel, F.; Smith, J.E.; Chandler, P. 2006: The sciarid fauna of the British Isles (Diptera: Sciaridae), including descriptions of six new species. Zoological Journal of the Linnean Society, 146, 1–147.
  6. ↑ Sasakawa, M. 2003: Notes on the Japanese Diptera: Part 2. Japanese Journal of Entomology (New Series), 6, 119–133.
  7. ↑ Sutou, M.; Kato, T.; Ito, M. 2011: Recent discoveries of armyworms in Japan and their species identification using DNA barcoding. Molecular Ecology Resources, 11(6), 992–1001..
  8. ↑ Menzel, F. 1992: Beiträge zur Taxonomie und Faunistik der paläarktischen Trauermücken (Diptera, Sciaridae). Teil II. - Die Sciaridae des Museums für Naturkunde der Humboldt-Universität zu Berlin. Beiträge zur Entomologie, 42(2), 259-277.
  9. ↑ Menzel, F.; Heller, K. 2007: Bemerkungen zur Nomenklatur der Sciariden (Diptera: Bibionomorpha: Sciaridae). Studia dipterologica, 13(2), 209–229.
  10. ↑ Heller, K.; Menzel, F. 2009: Sciaridae Billberg, 1820. In: L. Jedlička, M. Kúdela, & V. Stloukalová (Eds.), Checklist of Diptera of the Czech Republic and Slovakia. - Electronic version 2 (1). Bratislava. Available from [1]
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