Peromitra Enderlein, 1924

Genus Peromitra Enderlein, 1924 View in CoL View at ENA

Peromitra Enderlein, 1924: 278 View in CoL .

Type species: Phora incrassata Meigen, 1830 View in CoL (by original designation) (senior replacement name of Nemosia Lioy View in CoL , nec Vielliot, 1816).

Nemosia Lioy, 1864: 78 View in CoL . Type species: Phora incrassata Meigen, 1830 View in CoL (by original designation) (preoccupied by Nemosia Vielliot, 1816 View in CoL [ Aves View in CoL ]).

Lissometopia Lioy, 1864: 79 View in CoL . Type species: Phora nudifrons Macquart, 1835 View in CoL (= Phora agilis Meigen, 1830 View in CoL ) (by subsequent designation by Brues, 1903: 393).

Epicrana Schmitz, 1924: 149 View in CoL . Type species: Phora incrassata Meigen, 1830 View in CoL (by original designation) (junior replacement name of Nemosia Lioy View in CoL , nec Vielliot, 1816).

Borophaga (Peromitra) View in CoL : Schmitz, 1927: 63 (as subgenus of Borophaga View in CoL ).

Diagnosis for genus (modified from Brown 1992; Nakayama & Shima 2002). Frons without supra-antennal bristle. Ocellar region raised from vertex. Anterior ocellus oval, distinctly wider than long. Anepisternum with short setulae on upper part. Fore tarsomere 5 widened. Hind tibia with two or three dorsal longitudinal setal palisades. Wing vein R 2+3 reduced or absent. Male abdominal segment 6 with paired or single sternite. Aedeagus basically tubular.

A revised key to males of world Peromitra View in CoL species

(modified after Beyer 1959; Nakayama & Shima 2002; Michailovskaya 2004)

Note. Although the characteristics of hypopygium are critical for identification of Peromitra species, some species have been described without illustrations of the hypopygium so far.Among them, the hypopygia of two species, viz. P. cornigera and P. subagilis , are examined and used as diagnostic characters in this key, based on the photographs of the type specimens of these species ( Figs. 14 View FIGURE 14 , 15 View FIGURE 15 ).

1. Hind tibia without strong anterodorsal bristle on basal half ( Fig. 4C View FIGURE 4 )............................................. 2

Hind tibia with at least single strong anterodorsal bristle on basal half ( Fig. 4F View FIGURE 4 ).................................... 5

2. Wing vein R absent; right epandrial lobe elongated posteroventrally, with pointed apical process; left side of hypandrium 2+3 with single truncate lobe at posterior margin; right side of hypandrium with elongated, rounded processes at posterior margin; dorsal process of aedeagus short, highly curved upwardly ( Nakayama & Shima 2002: 70, fig. 7) P. pilosa Nakayama & Shima

Wing vein R 2+3 present but faint ( Fig. 5A View FIGURE 5 ); right epandrial lobe elongated posteroventrally, but without pointed process ( Fig. 6C View FIGURE 6 ); hypandrium and aedeagus not as above................................................................ 3

3. Ocellar region distinctly longer than wide; right epandrial lobe greatly elongated into narrow, blunt process; anteroventral portion of aedeagus with distinctly protruded process covered with minute spinules ( Nakayama & Shima 2002: 68, figs. 2C, 6)......................................................................... P. purpurea Nakayama & Shima

Ocellar region wider than long ( Fig. 2B View FIGURE 2 ); right epandrial lobe neither greatly elongated nor narrowed ( Fig. 6C View FIGURE 6 ); anteroventral portion of aedeagus not greatly protruded; if protruded, process without spinules ( Fig. 6E View FIGURE 6 )........................... 4

4. Both left and right posterior margin of hypandrium with hooked plate, single digitiform process under hooked plate ( Fig. 6A, C View FIGURE 6 ); apical portion of dorsal tube of aedeagus with dorsal pointed process ( Fig. 6E, F View FIGURE 6 ).................. P. agilis (Meigen)

Left and right posterior margin of hypandrium without hooked plate, with small, weakly developed process; apical portion of dorsal tube of aedeagus without dorsal pointed process ( Nakayama & Shima 2002: 72, fig. 8) P. hikosana Nakayama & Shima

5. Hind tibia with three dorsal longitudinal setal palisades ( Schmitz 1951: 263)...................................... 6

Hind tibia with two dorsal longitudinal setal palisades ( Fig. 4I View FIGURE 4 )................................................. 8

6. Ocellar region greatly protruded anteriorly; anterior ocellus extremely wider than lateral ocelli; midtibia with two dorsal longitudinal setal palisades; posteroventral corner of hypandrium rounded, not angled; anteroventral portion of lateral membranous lobe not elongated ( Schmitz 1951: 263, figs. 150E, 151)........................... P. incrassata (Meigen)

Ocellar region not distinctly protruded anteriorly; anterior ocellus not greatly widened, as wide as lateral ocelli; midtibia with single dorsal longitudinal setal palisades ( Schmitz, 1927: 64); hypandrium not as above............................. 7

7. Anterior ocellus and lateral ocelli situated closely, distance between anterior ocellus and lateral ocelli as long as width of anterior ocellus; posteroventral corner of hypandrium angled but not pointed; anteroventral portion of lateral membranous lobe distinctly elongated anteriorly ( Schmitz 1927: 64; Michailovskaya 2004: fig. 16.5)................ P. amurensis (Schmitz)

Anterior ocellus and lateral ocelli situated far apart, lateral ocelli situated close to compound eye; hypopygium not illustrated ( Schmitz 1951: 255)................................................................. P. germanica (Schmitz)

8. Ocellar region greatly protruded anteriorly, forming saddle-like frontal structure; anterior ocellus absent ( Schmitz 1951: 261, fig. 150A–C)....................................................................... P. cephalotes (Schmitz)

Ocellar region not greatly protruded anteriorly as above; anterior ocellus present ( Fig. 2F View FIGURE 2 )........................... 9

9. Epandrial lobe densely covered with strong, fringed bristles ( Fig. 8A View FIGURE 8 ); apex of dorsal process of aedeagus pointed downwardly, forming hook-like process ( Figs. 8F View FIGURE 8 , 9H View FIGURE 9 ).................................................................. 10

Epandrial lobe without fringed bristles ( Fig. 10A View FIGURE 10 ); apex of dorsal process of aedeagus curved upwardly ( Fig. 10E View FIGURE 10 )....... 13

10. Fore tibia with group of strong anterodorsal bristles on preapical portion, without dorsal row of short setulae; hypandrium asymmetrical; right posterior margin of hypandrium with large, hooked process; dorsal extended process of aedeagus long, bifurcated, with lower branch curved upwardly ( Michailovskaya 2000: 165, figs. 2, 3).......... P. hastata Michailovskaya

Fore tibia without strong anterodorsal bristles on preapical portion except single short bristle, with dorsal row of short setulae ( Fig. 4G View FIGURE 4 ); hypandrium nearly symmetrical; posterior margin of hypandrium without hooked process ( Fig. 8A, C View FIGURE 8 ); dorsal extended process of aedeagus not as above................................................................ 11

11. Aedeagus with dorsal plate short, slightly curved upwardly ( Fig. 8E View FIGURE 8 ); dorsal plate of aedeagus extended to right side of core membranous plate, with triangular process ventroapically ( Fig. 8F View FIGURE 8 )..................... P. fimbriata Nakayama & Shima

Aedeagus with dorsal plate elongated into narrow, downwardly curved, hooked process and ventral membranous plate attached to left side of dorsal process ( Fig. 9G View FIGURE 9 ).................................................................... 12

12. Posterior margin of hypandrium smoothly rounded; dorsal extended process of aedeagus short, not bifurcated ( Michailovskaya 2000: 167, fig. 7)................................................................ P. uncinata Michailovskaya

Posterior margin of hypandrium truncate ( Fig. 9B, D View FIGURE 9 ); dorsal extended process of aedeagus long, bifurcated, with lower branch short, curved downwardly ( Fig. 9H View FIGURE 9 )........................................................ P. galgori sp. nov.

13. Midtibia with at least two pairs of dorsal bristles on basal half ( Fig. 4M View FIGURE 4 ); hind tibia usually with more than two anterodorsal bristles except preapical one ( Fig. 4O View FIGURE 4 ).................................................................... 14

Midtibia with single pair of dorsal bristles on basal half ( Fig. 4E View FIGURE 4 ); hind tibia with one or two anterodorsal bristles except preapical one ( Fig. 4F View FIGURE 4 )................................................................................ 16

14. Flagellomere 1 dark brown ( Fig. 15B View FIGURE 15 ); posterior margin of hypandrium with weakly sclerotized, truncated small process, as long as cercus; dorsal tube of aedeagus widened apically, nearly straight ( Fig. 15C View FIGURE 15 ; Beyer 1958: 22).... P. subagilis (Beyer)

Flagellomere 1 orange to reddish brown ( Fig. 1F View FIGURE 1 ); posterior margin of hypandrium with well-sclerotized, large securiform process, distinctly longer than cercus ( Fig. 10A View FIGURE 10 ); dorsal tube of aedeagus narrowed apically, strongly curved upwardly ( Fig. 10E View FIGURE 10 ).............................................................................................. 15

15. Flagellomere 1 orange to yellow ( Fig. 1F View FIGURE 1 ); fore tibia with two or three dorsal bristles; midtibia with 4–6 dorsal strong bristles on basal half; hind tibia with 2–4 anterodorsal strong bristles except preapical one ( Fig. 4M–O View FIGURE 4 ; Colyer 1966: 72, figs. 4–6).................................................................................... P. multisetalis (Colyer)

Flagellomere 1 reddish brown ( Fig. 13B View FIGURE 13 ); fore tibia with two dorsal strong bristles; midtibia with 4 dorsal strong bristles on basal half; hind tibia with two or three anterodorsal strong bristles except preapical one ( Fig. 13A View FIGURE 13 ; Beyer 1958: 23)........................................................................................... P. eumimeta (Beyer) *

16. Flagellomere 1 reddish brown; fore tibia with two strong dorsal bristles on basal half and two rows of dorsal short setae on apical half; epandrial lobe not elongated ( Schmitz 1951: 261, fig. 155c; Brown 1992: fig. 16B)..... P. erythrocera (Meigen)

Flagellomere 1 dark brown ( Fig. 1H View FIGURE 1 ); chaetotaxy of fore tibia not as above; right epandrial lobe elongated, distinctly longer than left epandrial lobe ( Fig. 11B View FIGURE 11 )....................................................................... 17

17. Flagellomere 1 elongated, twice as long as wide ( Fig. 14A, B View FIGURE 14 ; Beyer 1958: fig. 7e); upper part of right posterior margin of hypandrium distinctly protruded posteriorly ( Fig. 14E View FIGURE 14 ); dorsal tube of aedeagus broadened and rounded apically, with triangular ventral process ( Fig. 14G, H View FIGURE 14 )............................................................. P. cornigera (Beyer)

Flagellomere 1 subglobose ( Fig. 1C View FIGURE 1 ); upper part of right posterior margin of hypandrium not protruded posteriorly ( Fig. 7C View FIGURE 7 ); dorsal tube of aedeagus not as above..................................................................... 18

18. Anterior ocellus as wide as lateral ocelli ( Fig. 2E View FIGURE 2 ); right epandrial lobe elongated posteriorly but not greatly enlarged, with posteriorly elongated process curved upwardly and blunt apically ( Fig. 7C View FIGURE 7 ); basal portion of aedeagus with numerous pointed spinules ventrally ( Fig. 7E View FIGURE 7 )................................................................ P. dextra sp. nov.

Anterior ocellus distinctly wider than lateral ocelli ( Fig. 2Q View FIGURE 2 ); right epandrial lobe greatly enlarged posteriorly, with pointed process apically ( Fig. 11C View FIGURE 11 ); basal portion of aedeagus without pointed spinules ventrally ( Fig. 11E View FIGURE 11 )................... 19

19. Right epandrial lobe distinctly longer than basal width, ventral margin not extended, with pointed process dorsoapically; apical extension of dorsal tube of aedeagus narrowed; ( Schmitz 1951: fig. 152.2).................... P. carinifrons (Zetterstedt)

Right epandrial lobe approximately as long as basal width, ventral margin extended and curved upwardly, with pointed process apically ( Fig. 11C View FIGURE 11 ); apical extension of dorsal tube broadened longitudinally ( Fig. 11F View FIGURE 11 )......... P. ussurica Michailovskaya