Fanniidae (Wang, 2014)

Zhang, Dong, Li, Wei, Zhang, Ming, Wang, Ming-Fu & Wang, Rong-Rong, 2016, Fanniidae (Insecta, Diptera) from Beijing, China, with key and description of one new species, Zootaxa 4079 (4), pp. 401-414 : 402-403

Key to the known males of the family Fanniidae in Beijing, China

1 Arista long plumose; katepisternal setae 1+2 ( Piezura Rondani ); frons much broader than the distance between two posterior ocelli at narrowest point; legs yellow, except tarsi and apical part of femora black; abdomen ground-color reddish-yellow.......................................................................... Piezura shanxiensis Xue, Wang & Wu

- Arista short plumose or nearly bare; katepisternal setae 1+1 ( Fannia Robineau-Desvoidy )............................ 2

2 Abdomen spatulate in shape, becoming narrow basad ( Fig. 1A ); mid femur with two stout thorn-like av in subbasal part ( Fig. 1B )....................................................................... Fannia subpellucens (Zetterstedt)

- Abdomen not spatulate in shape; mid femur without any stout thorn-like av in subbasal part.......................... 3

3 Mid coxa with hook-like spines on lower margin ( Fig. 1C, D, E )................................................ 4

- Mid coxa without any hook-like spine on lower margin, or only with stout and straight spine.......................... 6

4 Mid tibia with a tubercle on ventral surface ( Fig. 1C ); mid coxa with three hook-like spines ( Fig. 1C )................................................................................................... Fannia scalaris (Fabricius)

- Mid tibia without tubercle on ventral surface; mid coxa with one hook-like spine ( Fig. 1D, E )......................... 5

5 Lower margin of katepisternum without stout spine-like seta; fore tibia yellow at the basal 2/3 and with a long setae cluster on the posteroventral surface ( Fig. 1F ).................................................. Fannia manicata (Meigen)

- Lower margin of katepisternum with a stout spine-like seta ( Fig. 1D ); fore tibia entirely black and without long setae cluster on the posteroventral surface............................................................. Fannia fuscula (Fallén)

6 Mid first tarsomere with a basal tooth-like spine ( Fig. 1G, H ; Fig. 5E )............................................ 7

- Mid first tarsomere without basal tooth-like spine............................................................9

7 Fore tibia with a row of slender pv ( Fig. 1I ).......................................... Fannia spathiophora Malloch

- Fore tibia without pv row............................................................................... 8

8 Eyes bare; fore first tarsomere with slender and dense light brown setae on ventral surface ( Fig. 1J ); with two setae clusters between fore and mid coxae ( Fig. 1K ); cercus with long setae cluster ( Fig. 1L )................... Fannia barbata (Stein)

- Eyes with fine brownish hairs; fore first tarsomere without slender and dense seta on ventral surface; without setae cluster between fore and mid coxae; cercus without setae cluster.................................... Fannia hirticeps (Stein)

9 Hind coxa on posterior surface with setae................................................................. 10

- Hind coxa on posterior surface bare...................................................................... 15

10 Abdominal tergites 3 and 4 each with three black spots.................................. Fannia leucosticta (Meigen)

- Abdominal syntergite 1+2 to tergite 4 with median stripes or triangular vittas even without any mark.................. 11

11 Mid tibia with two or more pd ..........................................................................12

- Mid tibia with one pd ................................................................................. 13

12 Hind tibia with three to six av and four to six ad; mid femur without notch in distal area; mid tibia without slender seta on ven- tral surface........................................................................... Fannia dupla Nishida

- Hind tibia with two av and one ad; mid femur with a notch in distal area; mid tibia with numerous slender setae on ventral sur- face ( Fig. 6E )........................................................................ Fannia papei sp. nov.

13 Lateral part of abdominal tergites yellow, with thin pollinosity.......................... Fannia canicularis (Linnaeus)

- Abdomen black, with dense greyish-blue pollinosity......................................................... 14

14 Abdominal syntergite 1+2 to tergite 4 each with one inconspicuous median inverted triangular vitta, tergite 5 with one narrow median stripe; hind femur with two long av in distal 1/3 ( Fig. 1N ); hind tibia with one row of p ( Fig. 1M ), and with one row of ad, irregular in length ( Fig. 1N ).................................................... Fannia lepida (Wiedemann)

- Abdominal syntergite 1+2 to tergite 5 each with one median longitudinal stripes; hind femur with four long av on distal 1/3; hind tibia without p and with one ad ........................................................ Fannia prisca Stein

15 Hind femur with a setae cluster on posteroventral surface in distal 1/3 ( Fig. 1O )......... Fannia metallipennis (Zetterstedt)

- Hind femur without setae cluster on posteroventral surface in distal 1/3.......................................... 16

16 Hind tarsomeres stout ( Fig. 2E ); pra 1; thorax and abdomen ground-color gloss black ( Fig. 2A, B ); mid femur without notch in distal area...................................................................... Fannia carbonaria (Meigen)

- Hind tarsomeres not stout; pra 2; thorax and abdomen with light gray pollinosity; mid femur with a notch in distal area........................................................................................ Fannia postica (Stein)

Figures

FIGURE 1. Characters of fanniids from Beijing, China, males: A. Fannia subpellucens (Zetterstedt, 1845), abdomen, dorsal view. B. Same, mid leg, anterior view, arrow pointing to two stout thorn-like av. C. F. scalaris (Fabricius, 1794), mid leg, posterior view, arrows pointing to three hook-like spines and the ventral tubercle. D. F. fuscula (Fallén, 1825), katepisternum and mid coxae, ventral view. E. F. manicata (Meigen, 1826), mid coxae, anterior view. F. Same, fore tibia, posterior view. G. F. spathiophora Malloch, 1918, base of mid first tarsomere, posterior view, arrow pointing to a basal tooth-like spine. H. F. barbata (Stein, 1892), base of mid first tarsomere, posterior view, arrow pointing to the basal tooth-like spine. I. F. spathiophora, fore tibia, posterior view. J. F. barbata, fore first tarsomere, posterior view, arrow pointing to slender and dense light brown setae. K. Same, fore and mid coxae, ventral view arrows pointing to two setae clusters. L. Same, terminalia, posterior view, arrow pointing to the long setae cluster. M. F. lepida (Wiedemann, 1817), hind leg, posterior view, arrow pointing to the p row. N. Same, hind leg, anterior view, arrows pointing to two long av on hind femur and the ad row on hind tibia. O. F. metallipennis (Zetterstedt, 1838), hind femur, posterior view, arrow pointing to the setae cluster on posteroventral in distal 1 / 3. (Scale bars: A = 1.00 mm, B − O = 0.50 mm).

FIGURE 2. Fannia carbonaria (Meigen, 1826) from Beijing, China, male: A. Habitus, lateral view. B. Abdomen, dorsal view. C. Head, anterolateral view. D. Head, anterior view. E. Hind leg, anterior view, arrow pointing to the stout hind tarsomeres. (Scale bars: A = 1.00 mm, B − E = 0.50 mm).

FIGURE 5. Fannia hirticeps (Stein, 1892) form Beijing, China, male: A. Habitus, lateral view. B. Abdomen, dorsal view. C. Head, anterolateral view. D. Head, anterior view. E. Base of mid first tarsomere, anterior view, arrow pointing to the basal tooth-like spine. (Scale bars: A = 1.00 mm, B − E = 0.50 mm).

FIGURE 6. Fannia papei sp. nov. from Beijing, China, male: A. Habitus, lateral view. B. Abdomen, dorsal view. C. Head, anterolateral view. D. Head, anterior view. E. Mid leg, anterior view. (Scale bars: A = 1.00 mm, B − E = 0.50 mm).