Bradysia oelandica, Heller & Hippa & Vilkamaa, 2015

Heller, Kai, Hippa, Heikki & Vilkamaa, Pekka, 2015, Taxonomy of Bradysia Winnertz (Diptera, Sciaridae) in the Northern Holarctic, with the description of four new species, European Journal of Taxonomy 122, pp. 1-15 : 9-10

Bradysia oelandica sp. nov.

urn:lsid:zoobank.org:act:D1390D14-F74E-4595-A927-A287B8A331DF

Fig. 5 A–C

Diagnosis

Large-sized Bradysia . Brown. Maxillary palpus with 3 segments, segment 1 with a small shallow sensory patch. Wing length 2.3 mm, anal lobe small. Setose intercoxal lobe of hypopopygium present. Gonocoxa and gonostylus broad; gonocoxa with elongated ventromesial setae; gonostylus bulged mesiad, with a short apical tooth.

Etymology

The name is derived from the Latinized name of the type locality (the island of Öland, Sweden) of the species.

Material examined

Holotype

SWEDEN: ♂, Öland, Mörbylonga, Gamla Skogsby (Kalkstad), 56°37.002’ N, 16°30.457’ E, meadow with bushes, Malaise trap (Trap ID 22), 20 May–28 Jun. 2006, Swedish Malaise Trap Project, SMNH 2652 .

Description (male)

HEAD. Dark brown, antennal flagellomeres unicolorous, paler brown; maxillary palpus very pale brown. Eye bridge 3 facets wide. Face with 15 scattered longer and shorter setae. Clypeus with 3 setae. Maxillary palpus with 3 segments; segment 1 longer than segment 3, segment 2 shortest; segment 1 with 3 setae, with small dorsal patch of sensilla in shallow depression; surface of antennal flagellomeres rough, body of flagellomere 4 2.9× as long as wide, neck shorter than broad, longest setae as long as width of flagellomere.

THORAX. Brown, setae dark. Anterior pronotum with 7 setae. Episternum 1 with 6 setae. Scutum with long dorsocentrals, with some longer and shorter laterals, scutellum with short setae.

WING. Fumose. Length 2.3 mm. Width/length 0.45. Anal lobe small. Veins distinct. R1/R 0.75. c/ w 0.70. r-m shorter than bM, both non-setose.

LEGS. Yellowish brown. Coxal setae pale. Front tibial organ with pale vestiture forming a row. Front tibial spur longer than tibial width. Claws without teeth.

ABDOMEN. Setae dark and long.

HYPOPYGIUM ( Fig. 5 A–C). Brown, concolorous with abdomen. Intercoxal area with lobe and possessing ca. 10 long setae.

GONOCOXA. Broad, longer than gonostylus, ventromesial margin with elongated setae, dorsomesial margin with distinct lobes.

GONOSTYLUS. Globular, medially bulged mesiad, with dense apical setosity, with short narrow apical tooth, with apical (lateral) megaseta, with specialized subapical seta. Tegmen conical, weakly sclerotized, with area of small aedeagal teeth. Aedeagal apodeme short but strong.

Remarks

Bradysia oelandica sp. nov. belongs to the Bradysia polonica group of Menzel & Mohrig (2000) in having a broad intercoxal lobe of the hypopygium and an indistinct apical tooth at the end of the gonostylus. The general structure of the gonostylus is fairly similar to the other species of that group, but B. oelandica sp. nov. is easy to distinguish by the elongated setae at the apical part of the gonocoxa.

Figures

Fig. 5. Bradysia oelandica sp. nov. (holotype). A. Gonostylus, ventral view. B. Part of hypopygium, ventral view. C. Medial parts of hypopygium, ventral view. Scale bars: A = 0.1 mm, B–C = 0.3 mm. 1 = lobe at dorsal mesial margin of gonocoxa, 2 = tegmen, 3 = gonocoxal apodeme, 4 = aedeagal apodeme.