Cymatopus Kertesz
Creators: name: Masunaga, Kazuhiro
name: Evenhuis, Neal L.
Publisher: name: Zenodo
Year: 2012
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Dolichopodidae
Cymatopus

description: Key to species of Cymatopus Kertész (males)
This key is based on that of Evenhuis (2005), but modified and updated by the inclusion of subsequently discovered species.
1 Fore coxa covered with stiff bristles on anterior surface....................................................... 5
- Fore coxa only covered with fine setae on anterior surface..................................................... 2
2 Fore femur with 3 rather long, flattened, basoventral setae.............................................. C. setosus
- Fore femur without flattened, basoventral setae.............................................................. 3
3 R4+5 curved slightly but distinctly backward at tip.................................................... C. bredini
- R4+5 not curved backward at tip........................................................................... 4
4 Fore femur with only 5–6 longer setae anteroventrally............................................. C. cheesmanae
- Fore femur with only 2–3 longer setae anteroventrally.................................................. C. wirthi
5 Costa ending at apex of vein M1+2........................................................................ 6
- Costa running around wing (Madagascar).............................. C. stuckenbergi Grootaert & Grichanov, 2008
6 Wing modified, with deep sulcus on hind margin............................................................ 7
- Wing unmodified in shape............................................................................... 8
7 Hind region of wing distal to sulcus with field of microtrichiae; hind margin of wing with fringe of long hairs; fore tarsomere 1 modified, with almost crook-shaped, semicircular bend in distal half (Malaysia, Singapore, Thailand)................................................................................................... C. malayensis Parent, 1935
- Hind region of wing distal to sulcus without field of microtrichia; hind margin of wing without fringe; fore tarsomere 1 not modified, distal half straight (East Timor)......................................... C. othniopteryx Evenhuis, 2005
8 Hypopygium exposed; cercus long, narrow................................................................ 9
- Hypopygium small, concealed in postabdomen; cercus short and other appendages hidden (Samoa)..................................................................................................... C. spinosus (Parent), 1934
9 Fore tibia with black foliate bristle on medial surface (cf. Fig. 4 C).............................................. 10
- Fore tibia lacking such a bristle.......................................................................... 13
10 Fore tibia with long apical lobe (cf. Fig. 4 D); fore tarsomere 4 excavated ventrally with basal and apical lobes (cf. Fig. 4 F)...................................................................................................... 11
- Fore tibia with short apical lobe; fore tarsomere 4 not excavated ventrally (Malaysia, Thailand)............................................................................................... C. thaicus Grootaert & Meuffels, 2001
11 Fore tarsomere 5 subequal to or shorter than fore tarsomere 4 (cf. Fig. 4 E)....................................... 12
- Fore tarsomere 5 at least 1.5 times as long as fore tarsomere 4 (New Guinea, Australia)................................................................................................ C calcaratoides Grootaert & Meuffels, 1993
12 Legs yellow, but coxae, femora and tibiae slightly blackened dorsally; cercus very long, 1.5 times as long as height of hypopy- gium (Christmas Is. [Indian Ocean]).................................................. C. calcaratus Parent, 1935
- Legs black; cercus moderately long, 1.1 times as long as height of hypopygium (Fig. 5 A) (Pagan, Saipan, Rota, Guam)......................................................................................... C. femoralis sp. nov.
13 Middle and hind tibiae with long hairs toward apex (cf. Figs. 6 C,D)............................................ 14
- Middle and hind tibiae without long hairs................................................................ 15
14 Hind tibia with 2–3 short, strong, down-curved thorn-like bristles near middle (Fig. 6 D) (Saipan, Rota, Guam)................................................................................................. C. ventralis sp. nov.
- Hind tibia lacking such bristles (Christmas Is. [Indian Ocean], Thailand)..................... C. longipilus Parent, 1935
15 Fore tarsomere 4 with comb of long, curved anterodorsal setae (Papua New Guinea, Solomon Is.).. C. tibialis Kertész, 1901
- Fore tarsomere 4 lacking such a setal comb................................................................ 16
16 Fore tibia with 2–5 strong bristles (not foliate) on medial surface............................................... 17
- Fore tibia lacking such bristles.......................................................................... 19
17 Fore tibia with apical lobe bearing strong black bristle; fore tarsomere 2 with long ventral setae....................... 18
- Fore tibia lacking apical lobe; fore tarsomere 2 without long ventral setae (Fiji).............. C. baravikai Evenhuis, 2005
18 Fore tibia with bump or swollen area just beyond midpoint on ventral surface; fore tarsomere 2 with 8–9 long ventral bristles (New Caledonia)........................................................... C. neocaledonicus Evenhuis, 2005
- Fore tibia without swollen area; fore tarsomere 2 with 3 long ventral bristles (Papua New Guinea, Australia)................................................................................... C. leopoldi Meuffels & Grootaert, 1984
19 Five dorsocentral bristles; fore coxa and all femora yellow; hypopygium symmetrical; surstylus with conspicuous hook-shaped bristle............................................................................................. 20
- Four dorsocentral bristles; fore coxa and all femora black; hypopygium asymmetrical; surstylus lacking conspicuous hook- shaped bristle (Australia)............................................................. C. simplex Parent, 1941
20 Fore tibia with apical pectinate comb (New Caledonia)................................... C. flavipes Evenhuis, 2005
- Fore tibia lacking apical pectinate comb (Papua New Guinea)............... C motuporensis Grootaert & Meuffels, 1993
description: Published as part of Masunaga, Kazuhiro & Evenhuis, Neal L., 2012, Two new species of the genus Cymatopus Kertész from the Mariana Islands (Diptera: Dolichopodidae), pp. 36-46 in Zootaxa 3159 on pages 37-38, DOI: 10.5281/zenodo.209396