Goniaspis subaequalis ( Malloch, 1913 )

Mlynarek, Julia J. & Wheeler, Terry A., 2009, Revision of the Neotropical genus Goniaspis Duda (Diptera: Chloropidae), Zootaxa 2033, pp. 26-40 : 36-37

Goniaspis subaequalis ( Malloch, 1913)

(Figs. 20–21)

Hippelates subaequalis Malloch 1913: 257 (type locality: Trinidad: Montserrat). Goniaspis subaequalis: Sabrosky, 1941a: 27 .

Goniaspis subequalis: Sabrosky and Paganelli, 1984: 16 .

Description: Total length 1.4–2.0 mm. Overall color yellow; frontal triangle yellow, shining, extending to anterior margin of frons with slightly convex margins; ocellar tubercle brown, shining; frons yellow, 1.2–1.3 times as long as wide; cephalic setae pale, fronto-orbital setae well-developed; gena yellow, microtomentose, 0.1 times eye height; postgena slender, yellow, shining; face yellow; scape and pedicel yellow, first flagellomere reniform, yellow, first and second segments of arista yellow, third segment brown, slender, pubescence as long as width of arista at base; palpus, proboscis and clypeus yellow.

Scutum yellow, shining, punctate, microtomentose just anterior to scutellum, as long as wide, pronotum black at insertion with head; scutellum yellow, 1.8 times as wide as long, microtomentose, apical scutellar bristles strong, on small tubercles on dorsal margin of scutellum, lateral scutellar bristles longer than surrounding setae; thoracic pleurites shining yellow. Legs yellow; hind tibial spur apical, 0.7 times length of first tarsal segment; femoral organ 2 rows of 3 small tubercles; tibial organ oval, yellow, 0.25 times length of tibia. Wing hyaline, ratio of costal sectors C1: C2: C3: C4 – 1: 1.2: 1.4: 0.6; halter white.

Abdomen yellow, sparsely microtomentose, syntergite 1+2 paler than the other tergites, desclerotized; syntergite 1+2 slightly longer than tergites 3 and 4 combined.

Male postabdomen (Figs. 20–21): epandrium higher than long in lateral view, as wide as high in posterior view, with sparse setae; surstylus short, wide, parallel sided with broadly rounded apex, surstylus with sparse short setae; cercus broad, rounded, ventral projection large and rounded, cercus with sparse setae and one long posteroventral bristle, cerci separated by semi-circular excavation with indentations; distiphallus weakly sclerotized.

Type material: Holotype Ƥ: “June / 29.05”, “ Montserrat / Trinidad WI”, “Aug. Busck / Collector”, “ Type / No. 15967 / U.S. N.M.”, “ Hippelates / subaequalis / Malloch (Type)”. Paratypes: TRINIDAD: Montserrat, 29.vi.1905, A. Busck (23, 4Ƥ, USNM).

Other material examined: BELIZE: Toledo District, Blue Creek (16˚12’N 89˚3’W), Malaise trap, 25.i.1982, A.T. Finnamore (2Ƥ, LEM); BRAZIL: Rio de Janeiro, Grajau, 30.xi.1963, 10.vii.1964, H.S. Lopes (13, 1Ƥ, USNM); COLOMBIA: Buenaventura, 2.xi.1950, Michelbacher and Ross (1Ƥ, USNM); COSTA RICA: Puntarenas, Peninsula Osa, 5km N Puerto Jimenez, 10m, Malaise trap, xi–xii.1990 and vi.1992, P. Hanson (13, 8Ƥ, LEM); same except xi–xii.1990 (13, DEBU); Bataan, 16.vi.1951, O.L. Cartwright (13, 6Ƥ, USNM); Limon, 4km NE Bribri, 50m, vii–ix.1990, P. Hanson (13, LEM); Turrialba, 600–700m, 12.viii.1975, N.L.H. Krauss (33, 1Ƥ, USNM); Cartago, Pejibaye, 24–25.iii.1987, Malaise trap in old field and agricultural area, W.E. Steiner (23, USNM); Guanacaste Prov., 14km NE Tiliran, 05.vi.1973, Erwin and Hevel (13, 1Ƥ, USNM); Palmar, 21.vii.1959, C. Stephens (13, USNM); Limon Prov., Amubri, A.C. Amistad, 70m, 1–19.ii.1994, G. Gallardo, L S 385500_578000, #2687 (63, 6Ƥ, INBio); PANAMA: Las Cumbres, 29.xi.1981, H. Wolda (1Ƥ, USNM); same data except 12.xi.1981 (1Ƥ, USNM); Corozal, iii.1912, A. Busck (13, 3Ƥ, USNM); Summit Gardens, vii.1967, F.S. Blanton (1Ƥ, USNM); Monte Lirio, 28.viii.1923, R.C. Shannon (13, USNM); same data except 6.iv.1923 (13, USNM); Tabernilla, Canal Zone, A. Busck (1Ƥ, USNM); Summit, xi.1946, N.L.H. Krauss (13, USNM); Trinidad Rio, 16.iii.1912, A. Busck (13, 2Ƥ, USNM); Flat rock above Juan Mina, 5mi up Chagres R., 24.viii.1918, H. Morrison (1Ƥ, USNM); PERU: Colonia Perene, Rio Perene, 18mi NE La Merced, Junin, 3.i.1955, E.I. Schlinger and E.S. Ross (1Ƥ, USNM); TRINIDAD: Arena Forest, 2–27.vi.1955, T. Aitken (1Ƥ, USNM); VENEZUELA: San Esteban, xii.1939, P.J. Anduze (13, USNM); Aragua, Puerto de Cata, 10–11.vi.1976, A.S. Menke and D. Vincent (1Ƥ, USNM); Sucre, 7km NW San Vicente, 23.iii.1982, G.F. and J.F. Hevel (1Ƥ, USNM).

FIGURES. 20–25. Male genitalia. 20–21. Goniaspis subaequalis . 20. lateral. 21. posterior. 22–23. Goniaspis truncata . 22. lateral. 23. posterior. 24–25. Goniaspis versicolor . 24. lateral. 25. posterior. Scale bars = 0.1 mm.