Metopina

Mostovski, Mike B., 2016, Metopina Macquart (Diptera: Phoridae) of Israel, with description of a new species, new records and an identification key, Zootaxa 4111 (1), pp. 61-68 : 67

Key to the Metopina species of Israel

1 Females ............................................................................................. 2

- Males............................................................................................... 7

2 Anterior flap of abdominal tergite 5 vestigial and either membranous or weakly sclerotized, posterior part of tergite 5 spear- shaped ( Fig. 3 ).......................................................................... M. kuslitzkyi sp. n.

- Anterior flap of abdominal tergite 5 well-developed and sclerotized, posterior part of tergite 5 variously shaped........... 3

3 Anterior flap of abdominal tergite 5 remarkably long ( Fig. 1 ).................................... M. braueri (Strobl)

- Anterior flap of abdominal tergite 5 of different shape......................................................... 4

4 Anterior flap of abdominal tergite 5 constitutes more than half a circle, with notably sclerotized anterior arms ( Fig. 6 )............................................................................................. M. ulrichi Disney

- Anterior flap of abdominal tergite 5 semicircular or nearly so................................................... 5

5 Anterior flap of abdominal tergite 5 clearly less than semicircular, tergite 5 itself broadly semilunar ( Fig. 4 )..................................................................................................... M. obsoleta Beyer

- Anterior flap of abdominal tergite 5 rather semicircular, tergite 5 itself rounded triangular or tapered.................... 6

6 Abdominal tergite 5 rounded triangular ( Fig. 2 ), pleural areas of abdomen with at least two rows of setae on segment 5 and one row on segment 4.................................................................... M. heselhausi Schmitz

- Abdominal tergite 5 generally thin and posteriorly tapered to various degree ( Fig. 5 ), pleural area of abdominal segment 5 nor- mally with a single row of setae............................................................ M. pileata Schmitz

7 Ventral side of abdomen lacks any sclerotization............................................................. 8

- Sclerotized areas present on ventral side of abdominal segment 4, being developed as an entire sclerite or a group of isolated areas of pigmentation around base of each seta.............................................................. 9

8 Posterior face of hind femur with oblique striation in basal third ( Fig. 12 )............................ M. ulrichi Disney

- Posterior face of hind femur mostly reticulated in basal half and appears scaly along ventral edge ( Fig. 10 )...................................................................................................... M. kuslitzkyi sp. n.

9 Sensory area on posterior face of hind femur very distinct and includes a pit surrounded by microsetae. M. heselhausi Schmitz

- Microsculpture of the sensory area on posterior face of hind femur variable but never includes such a pit............... 10

10 Hind trochanter with a sausage-like seta in addition to several short bristles ( Fig. 11 ); abdominal venter with two sclerotized plates ( Fig. 8 )........................................................................... M. obsoleta Beyer

- Hind trochanter only with simple setae or bristles........................................................... 11

11 Sclerotized patch on abdominal venter weak and consists of isolated areas of pigmentation around the base of each seta that, however, may show some coalescence; the patch with less than 15 setae arranged in two irregular series separated by a bare space ( Fig. 9 ); microsculpture at base of posterior face of hind femur with long axes of polygons subparallel to ventral edge of femur................................................................................. M. pileata Schmitz

- Abdominal venter with 12–20 setae that are not separated into two irregular series, and areas of pigmentation show no signs of coalescence; microsculpture at base of posterior face of hind femur with long axes of polygons divergent from ventral edge of femur................................................................................ M. braueri (Strobl)

Figures

FIGURES 1 – 6. Abdominal tergites (T) of Metopina females showing anterior flap (AF) of T 5. 1, M. braueri, T 5; 2, M. heselhausi, T 5; 3, M. kuslitzkyi sp. n., T 4 – 5; 4, M. obsoleta, T 4 – 5; 5, M. pileata, T 5; 6, M. ulrichi, T 4 – 5. Scale bars: 0.1 mm.

FIGURES 10 – 12. Posterior face of hind femur of Metopina males. 10, M. kuslitzkyi sp. n.; 11, M. obsoleta; 12, M. ulrichi. Scale bar: 0.1 mm.

FIGURES 7 – 9. Sclerotization on the abdominal venter of Metopina males. 7, M. heselhausi; 8, M. obsoleta; 9, M. pileata. Scale bars: 0.1 mm.