Huascaromusca

Wolff, Marta, Ramos-Pastrana, Yardany, Marinho, Marco Antonio Tonus & Amorim, Dalton De Souza, 2017, Two new species of Huascaromusca Townsend from Colombia, and a new combination for Giovanella carvalhoi (Diptera: Mesembrinellidae), Zootaxa 4231 (2), pp. 251-263 : 253

Key to the species of Huascaromusca

1 Anterior spiracle with transverse opening without a dorsal dilatation; T5 with scattered, thin and long discal setae ( Fig. 19 A, C)............................................................... H. carvalhoi (Wolff et al., 2013) , comb. nov.

- Anterior spiracle with transverse opening with a dorsal, circular dilatation; T5 with a row of discal setae ( Fig. 19 B, D).....2

2 Subcostal sclerite ciliate................................................................................3

- Subcostal sclerite bare................................................................................. 4

3 Presutural acrostichal setae absent and dorsocentral setae 2:2............. H. cordillera Wolff & Ramos-Pastrana , sp. nov.

- Presutural acrostichal setae present and dorsocentral setae 2:3............................. H. volgelsangi Mello, 1967

4 General color of the body black, with light blue metallic reflections; mesonotum without longitudinal vittae; pleura and abdominal segments black; acrostichal setae 0:0 or 2:1....................................................... 5

- General color of body orange or brown; mesonotum brown or black with 3 or 4 longitudinal vittae of whistish pollen; pleura and syntergite 1+2 orange; acrostichal setae 0:1............................................................. 8

5 Presutural acrostichal setae absent; humeral setae 2.......................................... H. lara Bonatto, 2005

- Presutural acrostichal setae present; humeral setae 3..........................................................6

6 Legs yellow-orange; suprasquamal ridge bare.......................................... H. decrepita ( Séguy, 1925)

- Legs dark chestnut; suprasquamal ridge bare or with sparse, fine hairs........................................... 7

7 Anterior spiracle pale; suprasquamal ridge bare.......................................... H. uniseta ( Aldrich, 1925)

- Anterior spiracle dark chestnut or black; suprasquamal ridge with sparse, fine hairs................................................................................................................. H. obscura Wolff , sp.nov.

8 Thorax orange, mesonotum black with bluish metallic reflections; katepisternal setae 1+2...... H. semiflava ( Aldrich, 1925)

- Thorax brown or brownish red, mesonotum brown; katepisternal setae 1+1.......................................9

9 Presutural acrostichal setae present............................................ H. aeneiventris ( Wiedemann, 1830)

- Presutural acrostichal setae absent.......................................................................10

10 Thorax brownish-red; scutellum with discal, prebasal and subapical setae.................. H. purpurata ( Aldrich, 1922)

- Thorax shining black; scutellum lacking discal, prebasal and subapical setae................. H. bequaerti ( Séguy, 1925)

Figures

FIGURE 19. Huascaromusca carvalhoi (Wolff et al.), comb. nov. and Huascaromusca aeneiventris (Wiedemann), showing differences in setation on T 5 supporting the new combination. A. Habitus of Huascaromusca carvalhoi; holotype male (CEUA- 94560). B. Habitus of Huascaromusca aeneiventris; male from Colombia, Antioquia (CEUA- 42417). C. Anterior spiracle of H. carvalhoi; holotype male. D. Anterior spiracle of H. aeneiventris; female from Colombia, Antioquia (CEUA- 13432).