Pseudosympycnus perornatus Robinson, 1967

Soares, Matheus M. M. & Capellari, Renato S., 2020, Review of the Neotropical genus Pseudosympycnus (Diptera: Dolichopodidae) with description of six new species from Brazil and Peru, Zootaxa 4881 (2), pp. 231-256 : 247-248

Pseudosympycnus perornatus Robinson

( Figs 8 , 33–35 , 41 , 58, 59 , 69 , 73 , 86 )

Pseudosympycnus perornatus Robinson, 1967: 902 , figs 7–9. Type locality: Dominica.

Diagnosis (male). Metepimeron yellow. Femora entirely yellow, except femur III infuscate on dorsal surface of distal half. Tibia I not strongly compressed (only slightly thicker than tibiae II and III) ( Fig. 41 ). Tarsus I ( Fig. 58 ) entirely brown: It 1 compressed and trapezoidal, with dorsal crest bearing fringe of setae increasing in size towards apex; It 2 with 1 anterodorsal hook-like seta arising from a dorsal projection and directed backwards, and with 3 curved setae, with apical crest bearing long setae. Tarsus II: IIt 1 with anteroventral row of short setae continued from tibia II ( Fig. 69 ). Tarsus III ( Fig. 59 ): IIIt 3 with 4 posterior setae as long as podomere length, the 2 basalmost stronger and curved at apex; IIIt 4 with posterior row of long, fine setae.

Type material. PARATYPE Ƌ, labelled: “ Fond Figues River / Dominica, BWI / March 17, 1964 ” “ Paratype Ƌ / Pseudosympycnus / perornatus / H. Robinson ” ( NMNH) ; PARATYPE Ƌ: “ North Deux Dleau / Dominica, BWI / Feb 14, 1964 ” “ Paratype Ƌ / Pseudosympycnus / perornatus / H. Robinson ” ( NMNH) . PARATYPE ♀, labelled: “ Boeri Lake Trail / Dominica, BWL / Feb 22, 1964 ” “ Paratype ♀ / Pseudosympycnus / perornatus / H. Robinson ” ( NMNH) .

Remarks. This species is unique in the genus by the modifications in the male tarsomere 1 of leg I (see above). Robinson’s (1967) original description states that most of the legs, including femora, are pale. Nevertheless the two male paratypes examined here have femur III infuscated on distal half, while the female has an entirely pale femur.

Distribution. Dominica ( Fig. 86 ).

Figures

FIGURE 86. Known geographic distribution of species of Pseudosympycnus Robinson.

FIGURES 7–11. Pseudosympycnus Robinson. Habitus. 7. P. palpiger (Van Duzee, 1931), paratype Ƌ; 8. P. perornatus Robinson, 1967, paratype Ƌ; 9. P. robinsoni sp. nov., holotype Ƌ; 10. P. sehnali sp. nov., holotype Ƌ; 11. P. singularis (Parent, 1934), syntype Ƌ (photo: Erica McAlister). Scale bars = 1 mm.

FIGURES 30–39. Pseudosympycnus Robinson. Head. 30–32. P. palpiger (Van Duzee, 1931). 30–31. Paratype Ƌ. 30. Anterior view. 31. Lateral view. 32. Paratype ♀, anterior view. 33–35. P. perornatus Robinson, 1967. 33–34. Paratype Ƌ. 33. Anterior view. 34. Lateral view. 35. Paratype ♀, anterior view; 36–37. P. robinsoni sp. nov., holotype Ƌ. 36. Anterior view. 37. Lateral view; 38–39. P. sehnali sp. nov., holotype Ƌ. 38. Anterior view. 39. Lateral view. Scale bars = 0.2 mm.

FIGURES 40–41. Pseudosympycnus Robinson. Male leg I, posterior view. 40. P. sehnali sp. nov., paratype Ƌ; 41. P. perornatus Robinson, 1967, paratype Ƌ. Scale bars = 0.2 mm.

FIGURES 55–65. Pseudosympycnus Robinson. Male tarsus I and III. 55–57 P. palpiger (Van Duzee, 1931). 55, 57. Paratype Ƌ. 55. Tarsus I. 57. Tarsus III. 56. Identified specimen from Acre, Brazil, tarsus I. 58–59. P. perornatus Robinson, 1967, paratype Ƌ. 58. Tarsus I. 59. Tarsus III; 60–61. P. robinsoni sp. nov., holotype Ƌ. 60. Tarsus I. 61. Tarsus III; 62–63. P. sehnali sp. nov., holotype Ƌ. 62. Tarsus I. 63. Tarsus III; 64–65. P. singularis (Parent, 1934), syntype Ƌ (photo: Erica McAlister). 64. Tarsus I. 65. Tarsus III. Scale bars = 0.2 mm.

FIGURES 66–71. Pseudosympycnus Robinson. Male secondary sexual characters. 66. P. araza sp. nov., paratype Ƌ, femur and tibia I; 67. P. latipes (Parent, 1930), syntype Ƌ, femur III (photo: Günther Wöss); 68. P. bickeli sp. nov., holotype Ƌ, femur I; 69. P. perornatus Robinson, 1967, paratype Ƌ, tibia II; 70. P. latitibia sp. nov., paratype Ƌ, tibia I; 71. P. robinsoni sp. nov., holotype Ƌ, femur III. Scale bars = 0.2 mm.

FIGURES 72–73. Pseudosympycnus Robinson. Mesonotum, dorsal view. 72. P. latitibia sp. nov., paratype Ƌ; 73. P. perornatus Robinson, 1967, paratype Ƌ. Scale bars = 0.2 mm.