Rhaphium

Negrobov, Oleg P., Barkalov, Аnatolii V., S, Оlga В. & Va, E L I Va N O, 2012, Rhaphium Meigen (Diptera, Dolichopodidae) from the Taimyr Peninsula (Russia), with description of a new species, Zootaxa 3548, pp. 75-87 : 81-82

publication ID

https://doi.org/ 10.5281/zenodo.282829

DOI

https://doi.org/10.5281/zenodo.6174355

persistent identifier

https://treatment.plazi.org/id/03CACE73-1E46-CB10-00BD-FBA53EF3F83E

treatment provided by

Plazi

scientific name

Rhaphium
status

 

Key to male Siberian species of Rhaphium View in CoL View at ENA

1 Hind coxa with a group of lateral hairs.................................................................... 2

- Hind coxa with 1 strong lateral seta...................................................................... 24

2 Face black in frontal view, or silver-white in lateral view...................................................... 3

- Face silver-white in both frontal and lateral views........................................................... 9

3 Cercus divided into lobes............................................................................... 4

- Cercus not divided into lobes............................................................................ 6

4 Mid coxa from below lacking spike-like setae. Lower calypter with white cilia. Tarsomere 2 of foreleg with ventral process ( Fig. 3 View FIGURE 3 C); fore basitarsus with a row of short black anterodorsal setae. Hypopygium as in Figures 3 View FIGURE 3 A, B, D, with base of sursty- lus sinuous and nearly subequal in length to cercus............................................ R. nasutum (Fallén) View in CoL

- Mid coxa from below with spike-like setae. Lower calypter with black cilia. Tarsomere 2 of foreleg without ventral process ( Fig. 3 View FIGURE 3 I)............................................................................................. 5

5 Length of fore basitarsus more than the length of all others tarsomeres combined; ventrally with row of black setae. Hypopy- gium as in Figures 3 View FIGURE 3 E–F, with short hook-like process base of surstylus.......................... R. commune (Meigen) View in CoL

- Length of fore basitarsus shorter than length of all others tarsomeres combined; ventrally without row of black setae. Hypopy- gium as in Figuress 3G–H, with surstylus truncate apically bearing crown of dense setae............. R. glaciale Ringdahl View in CoL

6 Hind tibia distinctly thickened at tip; yellow in basal part, black in apical part. Fore basitarsus not swollen at tip. Hypopygium as in Figures 3 View FIGURE 3 J–K..................................................................... R. fascipes (Meigen) View in CoL

- Hind tibia not thickened at tip. Fore basitarsus swollen at tip................................................... 7

7 Surstylus very short, thick, slightly longer than wide, in apical part with two processes ( Fig. 3 View FIGURE 3 L, M). Apical part of M3+4 longer than dm-cu crossvein. Lower calypter with black cilia........................................ R. boreale Van Duzee View in CoL

- Surstylus long, clearly longer than wide; in apical part swollen without processes. M3+4 shorter than dm-cu crossvein. Lower calypter with white cilia................................................................................ 8

8 Surstylus curved on ventral side ( Figs. 3 View FIGURE 3 N–P). Fore tibia with row of long posteroventral setae, which are longer than width of tibia. Hind basitarsus thickened....................................................... R. jamalensis Negrobov View in CoL

- Surstylus straight, not curved ( Figs. 3 View FIGURE 3 Q–R). Fore tibia without long posteroventral setae. Hind basitarsus not thickened.................................................................................... R. nigribarbatum (Becker) View in CoL

9 Tarsomere 5 of mid tarsus broadened ( Figs. 4 View FIGURE 4 B, G, J)........................................................ 10

- Tarsomeres of mid tarsus not broadened.................................................................. 13

10 Cercus without process, broad, triangular, shorter than epandrium. Tarsomere 4 of midleg slightly broadened at tip, yellow in basal part; tarsomere 5 of midleg broadened, black, elongate oval. Surstylus needle-shaped, curved ( Fig. 4 View FIGURE 4 A).............

.................................................................................... R. confine Zetterstedt View in CoL - Cercus with process, long, ribbon like, longer than epandrium. Mid tarsomeres 4–5 greatly broadened. Surstylus of different shape.............................................................................................. 11

11 Tarsomere 5 of mid tarsus abruptly broadened ( Fig. 4 View FIGURE 4 B), considerably wider than long, convex laterally. Hypopygium as in Figures 4 View FIGURE 4 C–E..................................................................... R. latimanum Kahanpää

- Tarsomere 5 of mid tarsus gradually broadened ( Figs. 4 View FIGURE 4 J, G), with straight margins................................ 12

12 Cercus with very small appendage at basal third bearing single cilium, with rows of hairs in distal half ( Figs. 4 View FIGURE 4 F–I)........................................................................................... R. patellitarse (Becker) View in CoL

- Cercus forked near middle, with unequal lobes and bunches of hairs at apex of both lobes ( Figs. 4 View FIGURE 4 K–M)..................................................................................................... R. crassipes (Meigen) View in CoL

13 Mid coxa with group of setae forming spike-like prolongation................................................. 14

- Mid coxa with group of setae, not forming spike-like prolongation............................................. 18

14 Cercus divided into two lobes ( Fig. 4 View FIGURE 4 N)........................................ R. firsovi Stackelberg & Negrobov View in CoL

- Cercus not divided into two lobes...................................................................... 15

15 Fore basitarsus not broadened apically. Hypopygium as in Figures 4 View FIGURE 4 O–P......................... R. laticorne (Fallén) View in CoL

- Fore basitarsus broadened apically..................................................................... 16

16 Fore basitarsus with group of long hairs. Surstylus thickened at apex; cercus with short narrow process at the base ( Figs. 4 View FIGURE 4 Q–R)................................................................................. R. rivale (Loew) View in CoL

- Fore basitarsus without long hairs. Surstylus not thickened at apex; cercus without process at base................... 17

17 Larger: 5.6–6.9 mm. Apical part of surstylus blade-like, pointed ( Figs. 5 View FIGURE 5 A–B). Fore basitarsus slightly longer than tarsomere 2................................................................................... R. essoensis Negrobov View in CoL

- Smaller: 3.6–3.7 mm. Apical part of surstylus elongate-oval, rounded ( Figs. 5 View FIGURE 5 C–D). Fore basitarsus more than 1.5X as long as tarsomere 2....................................................................... R. elegantulum (Meigen) View in CoL

18 Fore femur with row of strong setae ventrally. Hypopygium as in Figures 5 View FIGURE 5 E–F.................... R. riparium (Meigen) View in CoL

- Fore femur without strong setae ventrally................................................................. 19

19 Cercus not divided into lobes........................................................................... 20

- Cercus divided into lobes.............................................................................. 21

20 Cercus apically broad, with long ventral hook-like process, without bundle of setae ( Figs. 5 View FIGURE 5 G–H)....... R. praerosum Loew View in CoL

- Cercus apically narrow, near top without hook-like process but dorsally with bundle of long dense setae ( Figs. 5 View FIGURE 5 I–J)............................................................................................ R. penicillatum Loew View in CoL

21 Femora yellow, cercus bilobed. Hypopygium as in Figure 5 View FIGURE 5 K.............................. R. nudiusculum Negrobov View in CoL

- Femora mostly dark; cercus trilobed..................................................................... 22

22 Mid femur and hind tibiae black; stylus shorter than postpedicel; cercus reaching middle of abdominal segment 4 ( Figs. 5 View FIGURE 5 L–M).......................................................... R. subtridactylum Negrobov, Barkalov & Selivanova View in CoL

- Tip of mid femur and basal third of hind tibia dusky-yellow; stylus longer than postpedicel; cercus reaching abdominal seg- ment 3............................................................................................. 23

23 Fore basitarsus longer than tarsomeres 2–5 combined; inner lobe of cercus distinctly longer than epandrium ( Figs. 6 View FIGURE 6 A–B)........................................................................................ R. tridactylum (Frey) View in CoL

- Fore basitarsus as long as tarsomere 2; inner lobe of cercus shorter than epandrium (Fig. C)....... R. dichromum Negrobov View in CoL

24 Fore basitarsus with row of short strong ventral setae. Hypopygium as in Figure 6 View FIGURE 6 D................. R. micans (Meigen) View in CoL

- Fore basitarsus without row of short strong ventral setae..................................................... 25

25 Postpedicel small, longer than wide. Hypopygium as in Figures 6 View FIGURE 6 E–F.............. R. beringiense Negrobov & Vockeroth View in CoL

- Postpedicel long ribbon like, at least 1.5X longer than wide................................................... 26

26 Frons mat, with dense white or brown pollinosity........................................................... 27

- Frons shining, without dusting.......................................................................... 30

27 Legs black. Hypopygium as in Figures 6 View FIGURE 6 G–H.......................... R. sibiricum Negrobov, Barkalov & Selivanova

- Legs partly or completely yellow........................................................................ 28

28 Postpedicel length 8X its width. Fore femur dorsally and hind femur at tip dark..................... R. borisovi sp. nov.

- Postpedicel length 5– 6 X its width. All femora yellow....................................................... 29

29 Inner lobe of cercus approximately 1.5– 2 X as long as epandrium; outer lobe of cercus approximately 6X shorter than inner lobe ( Figs. 6 View FIGURE 6 I–K). Fore tibiae and tarsomeres 1–2 of foreleg with row of short erect ventral setae … R. grandicercum Negrobov View in CoL

- Inner lobe of cercus slightly longer than epandrium; outer lobe of cercus long, slightly shorter than inner lobe ( Figs. 7 View FIGURE 7 A–B). Fore tibiae and taromeres 1–2 of fore tarsus without short erect ventral setae.................... R. albifrons Zetterstedt View in CoL

30 Hind coxa with pale seta.............................................................................. 31

- Hind coxa with dark seta.............................................................................. 32

31 Postpedicel 6X as long as wide; stylus 1.5– 2 X longer than width of postpedicel. Surstylus narrow rectangular, at top with deep notch and long ventral process ( Figs. 7 View FIGURE 7 C–D).................................................... R. fissum Loew View in CoL

- Postpedicel 7X as long as wide; stylus slightly longer than width of postpedicel. Surstylus broadly triangular, without notch and ventral process ( Figs. 7 View FIGURE 7 E–F)....................................................... R. gruniniani Negrobov View in CoL

32 Cercus with long apical seta ( Figs. 7 View FIGURE 7 G–H)................................................ R. monotrichum Loew View in CoL

- Cercus without long apical seta......................................................................... 33

33 Cercus with tuft of long setae ( Figs. 7 View FIGURE 7 I–J)................................................ R. caliginosum Meigen View in CoL

- Cercus without tuft of long setae......................................................................... 34

34 Cercus short oval ( Figs. 7 View FIGURE 7 K–M). Postpedicel approximately 4X as long as wide.................... R. lanceolatum Loew View in CoL

- Cercus narrow, thread-like ( Figs. 7 View FIGURE 7 N–O). Postpedicel approximately 5X as long as wide............. R. umbripenne (Frey) View in CoL

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Diptera

Family

Dolichopodidae

GBIF Dataset (for parent article) Darwin Core Archive (for parent article) View in SIBiLS Plain XML RDF