Dichaeta transversa (Walker, 1853)

Krivosheina, M. G., 2012, Restoration Of The Name Dichaeta Ussurica Krivosheina, 1986 (Diptera: Ephydridae), Far Eastern Entomologist 252, pp. 27-31 : 28

Dichaeta transversa (Walker, 1853)

Figs 1 , 2–3 , 6–7 , 10

MATERIAL EXAMINED. Lectotype, ♂, with handwritten label “transversa” and several additional labels ( Fig. 1 ), kept in BMNH. This specimen was designated as lectotype by Mathis & Zatwarnicki (2007).

DESCRIPTION. The lectotype is in a poor condition, directly pinned, with only the thorax on the pin, without wings, forelegs and right midleg, dissected terminalia are placed in plastic vial. Basal fused part of surstyli broad, apical parts of surstyli directed inside ( Fig. 2 ), curved surstyli longer than adjoining part of epandrium ( Fig. 3 ), the shape of surstyli in lateral view differing form those of “ussurica”. Abdominal sternite 5th of male 2 times as long as wide, bilobed anteriorly, abdominal sternite 4th as long as wide ( Figs 6-7 ).

DISTRIBUTION ( Fig. 10 ). Nearctic: United States (Florida, Maryland, New Jersey, Ohio, Tennessee, Texas, Virginia) ( Mathis & Zatwarnicki, 2007) .

Figures

Fig. 1. Labels of the lectotype of Dichaeta transversa Walker, 1853.

Figs 2–5. Epandrium and fused surstyli of Dichaeta. 2, 3 – D. transversa: 2 – dorsal view,

Figs. 6–9. Abdominal sternites V and IV, ventral view: 6, 7 – Dichaeta transversa: 6 –

Figs. 10–11. Distribution maps. 10 – Dichaeta transversa (after Mathis & Zarwarnicki,