Norellisoma vonickai, Šifner, 2008

Šifner, František, 2008, Three new species of the family Scathophagidae (Diptera) from the Palaearctic region with a redescription of the male of Amaurosoma longicorne, Acta Entomologica Musei Nationalis Pragae (suppl.) 48 (1), pp. 103-109 : 107-109

Norellisoma vonickai sp. nov.

( Fig. 10-11 ) Type material. HOLOTYPE: ♀, CZECH REPUBLIC: BOHEMIA bor., Jizerské hory Mts., Bukovec Mt. (5158) near the Jizerka settlement, 18.-20.vi.2007, wet meadow and forest edge, 950 m a.s.l., yellow pan traps, F. Šifner leg. (coll. Šifner).

Description. Female. Body length 6 mm, primary colour black.

Head. Two orbital setae, three frontal setae, frontal vitta, parafacials, face and genae entirely yellowish red, antennae completely yellow, arista black and bare, only one vibrissal seta, palpi yellow, ocellar triangle and posterior portion of head black.

Thorax. Acrostichal setae almost invisible, fine dorsocentral setae (2 + 3), one humeral seta, one pair of discal scutellar setae, apical discal setae reduced to hairs. All femora and tibiae including all tarsomeres yellow, wings distinctly darkened but veins without longitudinal darkened coloration.

Abdomen. Sternite 7 divided into two separate sclerites which are irregularly sclerotized caudally and connected by membrane with minute sclerites, proximally with a separate small triangular sclerite, sternite 6 narrow, caudally straight and extended by narrow membrane and with distinct bristles laterally, sternite 5 with three pairs of fine bristles ( Fig. 10 ), sternite 8 very short with six thorns, two apical ones small ( Fig. 11 ).

Male unknown.

Differential diagnosis. The female of Norellisoma vonickai sp. nov. differs from all known species of the genus by the bare arista, very short abdominal sternite 8, and characteristic arrangement of the thorns.

Etymology. This species is dedicated to the Czech coleopterologist and my friend Pavel Vonička (Regional Museum of Northern Bohemia, Liberec, Czech Republic).

Distribution. Czech Republic (northern Bohemia).

Figures

Figs. 7-11. 7: Amaurosoma bernasconii sp. nov., female, allotype, abdominal sternites 4 to 7. 8-9: Microprosopa ozerovi sp. nov., male, paratype; 10-11: Norellisoma vonickai sp. nov., female. 8 – abdominal sternites 3 to 5; 9 – praegonite; 10 – abdominal sternites 5 to 7; 11 – abdominal sternite 8. Scale bars: 0.5 mm (Figs. 8, 10); 0.1 mm (Figs. 7, 9, 11).