Diptera, , 1758

Freitas-Silva, Rafael A. P. & Ale-Rocha, Rosaly, 2019, New South American species of Crossopalpus Bigot (Diptera: Hybotidae: Tachydromiinae), including biogeographical insights and a reinterpretation of female abdominal tergite 10 in Drapetidini, Zootaxa 4559 (1), pp. 111-135 : 112-113

publication ID

https://doi.org/10.11646/zootaxa.4559.1.4

publication LSID

lsid:zoobank.org:pub:F2186E8E-E924-4259-AD0D-3AE5FE55C6DA

DOI

https://doi.org/10.5281/zenodo.5928761

persistent identifier

https://treatment.plazi.org/id/941D87B9-3E27-C348-FF24-F92104AF323A

treatment provided by

Plazi

scientific name

Diptera
status

 

Key for identification of South American species of Crossopalpus Bigot ( Diptera , Hybotidae , Tachydromiinae )

1 Scutum not densely bristled, with only few acrostichal (acr) and dorsocentral (dc) bristles ( Figs 24, 26, 30 View FIGURES 23–30 ). Fore and mid tibiae yellow ( Figs 23, 25, 29 View FIGURES 23–30 )............................................................................... 2

- Scutum densely bristled, bearing several rows of acr and dc bristles ( Figs 16, 18 View FIGURES 16–19 , 28 View FIGURES 23–30 ). At least fore or mid tibiae darkened ( Figs 10 View FIGURES 10–11 , 16, 17 View FIGURES 16–19 , 27 View FIGURES 23–30 ), reddish-yellow to brown................................................................... 4

2 Frons and vertex with patch of white tomentum ( Fig. 24 View FIGURES 23–30 ). Antennae black, postpedicel concolorous with preceding segments ( Figs 23, 24 View FIGURES 23–30 ). Femora concolorous, yellow ( Figs 23–24 View FIGURES 23–30 ). Shorter species, about 1 mm ............... C. albivertex sp. nov.

- Frons and vertex without patch of white tomentum ( Figs 26, 30 View FIGURES 23–30 ). Antennae dark brown to yellow, postpedicel lighter in color than preceding segments ( Figs 26, 29, 30 View FIGURES 23–30 ). Hind femur darker than fore and mid femora ( Figs 25, 29 View FIGURES 23–30 ). Longer species, about 2 mm ............................................................................................... 3

3 Palpus ( Fig. 29 View FIGURES 23–30 ) and abdomen yellow ( Figs 29, 30 View FIGURES 23–30 ). Hind tibia darkened ( Fig. 29 View FIGURES 23–30 ). Wing milky, with no infuscation, second costal section 2/3 length of third costal section ( Fig. 35 View FIGURES 31–35 ).................................... C. xanthogaster sp. nov.

- Palpus dark brown ( Fig. 25 View FIGURES 23–30 ), abdomen pale brown ( Figs 25, 26 View FIGURES 23–30 ). Tibiae concolorous, yellow ( Fig. 25 View FIGURES 23–30 ). Wing slightly brown infuscate near base, second costal section about as long as third costal section ( Fig. 32 View FIGURES 31–35 )............... C. aliceae sp. nov.

4 Palpus yellow ( Figs 10 View FIGURES 10–11 , 17 View FIGURES 16–19 ). Fore and mid femora with brown to reddish-brown extensive markings, hind femur black ( Figs 10 View FIGURES 10–11 , 16, 17 View FIGURES 16–19 ). Wing hyaline, lacking infuscation, venation pale brown to brown ( Figs 16, 17 View FIGURES 16–19 )........................... 5

- Palpus somewhat darkened, brownish-yellow. Fore and mid femora brownish-yellow, hind femur brownish-yellow with brown infuscation on apical 2/3 ( Figs 27, 28 View FIGURES 23–30 ). Wing brown infuscate, venation dark brown to black ( Fig. 34 View FIGURES 31–35 )... C. goliathus sp. nov.

5 Head lacking tomentum on upper 1/2 of postocular area. Fore tibia yellow ( Fig. 10 View FIGURES 10–11 ). Hind femur slender ( Fig. 10 View FIGURES 10–11 ), bearing 2 subapical anteroventral setae. Vein R 4+5 only slightly arched, M 1 slightly bowed, initially divergent from each other and convergent near apex ( Fig. 33 View FIGURES 31–35 )............................................................ C. armipes ( Bezzi, 1909)

- Head tomentose on upper 1/2 of postocular area ( Fig. 16 View FIGURES 16–19 ). Fore tibia brownish-yellow ( Fig. 17 View FIGURES 16–19 ). Hind femur strongly swollen ( Figs 16, 17 View FIGURES 16–19 ), bearing 1 subapical anteroventral strong seta. Both veins R 4+5 and M 1 strongly arched, parallel throughout ( Figs 16, 17 View FIGURES 16–19 ).................................................................... C. pennescens ( Melander, 1918)