Brachylinga ornata (Kröber)

Webb, Donald W. & Metz, Mark A., 2006, A Revision of the New World Genera Brachylinga Irwin and Lyneborg and Lysilinga Irwin and Lyneborg (Diptera: Therevidae: Therevinae) with the Description of a New Genus, Elcaribe Webb, Zootaxa 1288 (1288), pp. 1-241 : 99-101

Brachylinga ornata (Kröber)

( Figs. 199, 213)

ornata Kröber (1911:501 fem. key, 516 orig. desc.; 1913:33 dist.; 1928a:6 dist., 12 fem. key) ( Psilocephala ); Metz et al. (2003:248 comb. change, 250: trans. orig. desc.) ( Brachylinga ). Type locality Brazil, Nova Teutonia. Neotype female in INHS.

Diagnosis

Brachylinga ornata is taxonomically associated with B. bicolor , B. cinerea , B. concava , B. curacaoensis , B. divaricata , B. fraterna , B. tepocae and B. xanthoperna in lacking setae on the katepisternum; in having the postocular, mesonotal, and coxal macrosetae dark reddish brown; and in having the halter yellow. Brachylinga ornata is known only from the female and is similar to B. bicolor , B. concava , and B. divaricata in having the parafacial dark reddish brown with silver pruinescence laterally and dorsally. The females of B. bicolor , B. concava , B. divaricata , and B. ornata are indistinguishable based on external characters. Internally B. bicolor , B. concava , and B. ornata have the spermathecal ducts directed anteriorly ( Figs. 188, 192, 199) while in B. divaricata the spermathecal ducts are directed laterally before bending at a right angle and continuing anteriorly ( Fig. 194). Until male specimens are found, B. ornata is retained as a valid species based on its geographical distribution.

Redescription of female

Variation (n=10).

Body length 5.5–7.7, 6.8 mm.

Head. Length 0.70 mm. Frons dark yellowish brown, ventral fourth silver with small dark brown area dorsolaterally; setae dark brown on dorsal three­fourths. Antenna dark brown, scape with pruinescence gray; setae dark reddish brown, grading into macrosetae. Parafacial dark reddish brown, glossy, pruinescence silver laterally and dorsally. Maxillary palpus dark reddish brown; setae dark brown. Genal setae white, elongate. Occipital setae white, elongate becoming lanceolate, appressed dorsally; macrosetae dark reddish brown, scattered. Postocular macrosetae dark reddish brown.

Thorax. Macrosetae dark reddish brown, 3–4 np, 2 sa, 1 pa, 2 dc, 2 sc. Mesonotum dull brown; vittae dark brown, separated by gray pruinescent bands; setae dark brown, erect, elongate intermixed with pale, whitish yellow, appressed setae. Pleuron dark reddish brown, pruinescence white; setae whitish yellow, elongate on propleuron, anepisternum, metanepisternum, laterotergite, and scutellum, absent on katepisternum. Wings. Membrane pale smoky brown; veins dark brown; pterostigma dark brown; cell m 3 closed at wing margin or closed and petiolate. Halter stalk brown, knob yellow (occasionally dorsal surface of knob brownish). Legs. Coxa setae white, present on posterior surface of midcoxa; macrosetae dark reddish brown. Femora dark reddish brown, filamentous setae white, moderately long on fore­ and midfemora; av 0:0:2–4, pv 0:0:2–6. Tibiae dark yellowish brown, apex becoming dark brown. Tarsi dark brown.

Abdomen. Dark reddish brown, pruinescence gray on tergites 1 and 5–8 and across posterior margin of tergites 2–4; dorsal setae dark reddish brown, appressed with white elongate setae on tergite 1 and across posterior margin of tergites 2–4; lateral setae white on tergites 1–4, dark reddish brown on tergites 5–8. Terminalia (MEI 046072) dark reddish brown. Setae on median lobe of tergite 9 absent. Furca ( Fig. 199) quadrate, posterior margin rounded and sides rounded, anterior margin truncate; length 0.49 mm, width 0.24 mm; anterolateral projection short. Common duct ( Fig. 199) longer than furca. Spermathecal duct ( Fig. 199) directed anteriorly.

Distribution Brachylinga ornata is known from Brazil and Paraguay ( Fig. 213).

Habitats and phenology Brachylinga ornata has been handnetted from July through April.

Specimens examined

Type specimen: The holotype female of Psilocephala ornata Kröber was collected in Paraguay and was deposited in the HNHM. This collection was destroyed in 1956 (M. Foldavi, personal communication). Currently, no specimens of Psilocephala ornata are available from Paraguay, so a female specimen labeled "BRAZIL, N. Teutonia, 1.11.57, F. Plaumann", (MEI 153864) has been selected for the neotype and is deposited in the collection of the Illinois Natural History Survey. This neotype is designated in order to fix the concept of Psilocephala ornata and to ensure universal and consistent interpretation of the same. Other specimens: BRAZIL. CEARA. Limoeiro [­5.142, ­38.09], –. XII.1938, Alves, D. C., 1♀ MEI 046084 ( USNM) . MINAS GERAIS. Governador Valadares [­18.85, ­ 41.933] , –. X.1943, de Oliveira, S. J., 1♀ MEI 077754 ( MEIC) ; RIO DE JANEIRO. Italiaia [­22.5, ­44.571], 700 m , 7.IX.1934, Zikan, J. F., 1♀ MEI 046050 ( USNM) . SANTA CATARINA. Nova Teutonia [­27.183, ­52.383], 300–500 m , 25.III.1938, Plaumann, F., 2♀ MEI 109364–5 ( BMNH) ; 1.II.1943, 1♀ MEI 039688 ( CNC) ; 1.IX.1944, 2♀ MEI 046086–7 ( CNC) ; –. X.1944, 1♀ MEI 039690 ( CNC) ; 23.III.1950 MEI 153862 ( NHMB) ; 23.X.1952, 1♀ MEI 090071 ( CAS) ; 31.I.1955, 1♀ MEI 003930 ( BMNH) ; – XI.1955 MEI 154871 ( NHMB) ; 16.I.1957, 1♀ MEI 039691 ( CNC) ; 28.I.1957, 1♀ MEI 039687 ( CNC) ; 3.II.1957, 1♀ MEI 039693 ( CNC) ; 7.III.1957, 1♀ MEI 039692 ( CNC) ; 5.X.1957, 1♀ MEI 090070 ( CAS) ; 8.X.1957, 1♀ MEI 090077 ( CAS) ; 4.XI.1957, 1♀ MEI 090078 ( CAS) ; 15.XI.1957, 1♀ MEI 090081 ( CAS) ; 26.XI.1957, 1♀ MEI 090080 ( CAS) ; 3.I.1958, 2♀ MEI 090082, 090089 ( CAS) ; 4.I.1958, 1♀ MEI 090076 ( CAS) ; 6.I.1958, 1♀ MEI 090088 ( CAS) ; 20.III.1958, 1♀ MEI 039689 ( CNC) ; 22.X.1958, 1♀ MEI 090085 ( CAS) ; 8.XI.1958, 1♀ MEI 090084 ( CAS) ; 18.XI.1958, 1♀ MEI 090086 ( CAS) ; 3.XI.1958, 1♀ MEI 153852 ( NHMB) ; 27.XI.1958, 4♀ MEI 090067–9, 090072 ( CAS) ; 11.XII.1958, 1♀ MEI 090090 ( CAS) ; 18.XII.1958, 1♀ MEI 090079 ( CAS) ; 24.XII.1958, 1♀ MEI 090087 ( CAS) ; 20.I.1959, 1♀ MEI 090083 ( CAS) ; 21.I.1959, 1♀ MEI 090075 ( CAS) ; 30.I.1959, 1♀ MEI 090074 ( CAS) ; 18.VII.1959, 1♀ MEI 046068 ( CNC) ; 19.X.1959, 1♀ MEI 046055 ( CNC) ; 27.XI.1959, 1♀ MEI 046059 ( CNC) ; 27.XI.1959, 1♀ MEI 046067 ( CNC) ; 25.XII.1959, 1♀ MEI 046060 ( CNC) ; 26.XII.1959, 1♀ MEI 046064 ( CNC) ; 21.I.1960, 1♀ MEI 046066 ( CNC) ; 14.II.1960, 1♀ MEI 046054 ( CNC) ; 26.II.1960, 1♀ MEI 046061 ( CNC) ; 20.IV.1960, 1♀ MEI 046065 ( CNC) ; 8.XI.1960, 1♀ MEI 046062 ( CNC) ; 21.I.1961, 1♀ MEI 039694 ( CNC) ; 23.I.1961, 1♀ MEI 039697 ( CNC) ; 24.I.1961, 1♀ MEI 039695 ( CNC) ; 31.I.1961, 2♀ MEI 039698, 039701 ( CNC) ; 2.II.1961, 2♀ MEI 039696, 039699 ( CNC) ; 15.II.1961, 1♀ MEI 039700 ( CNC) ; 9.X.1961, 1♀ MEI 046070 ( CNC) ; 23.I.1962, 1♀ MEI 046074 ( CNC) ; 11.II.1962, 1♀ MEI 046075 ( CNC) ; 15.III.1962, 1♀ MEI 046051 ( CNC) ; 2.VII.1962, 1♀ MEI 046071 ( CNC) ; –. VII.1962, 1♀ MEI 046069 ( CNC) ; 15.X.1962, 1♀ MEI 046057 ( CNC) ; 29.X.1962, 1♀ MEI 046053 ( CNC) ; 30.X.1962, 1♀ MEI 046052 ( CNC) ; –. XI.1962, 1♀ MEI 046073 ( CNC) ; 25.XI.1962, 1♀ MEI 046063 ( CNC) ; 29.XI.1962, 1♀ MEI 046056 ( CNC) ; –. III.1963, 1♀ MEI 046077 ( CNC) ; –. X.1964, 1♀ MEI 046079 ( CNC) ; –. XI.1964, 3♀ MEI 046080, 046082–3 ( CNC) ; –. XII.1964, 2♀ MEI 046072 ( CNC) , 111832 (CAS); –. I.1965, 1♀ MEI 046081 ( CNC) ; –. II.1965, 2♀ MEI 046076, 046078 ( CNC) ; –. XI.1966, 1♀ MEI 046049 ( CNC) ; –. XII.1966, 1♀ MEI 046048 ( CNC) ; 16.II.1989, 1♀ MEI 090073 ( CAS) . SAO PAULO. Batatais [­20.9, ­47.59] , –. X.1945, Pereira, P., 1♀ MEI 045962 ( MZSP) ; –. X.1946, 1♀ ME I 045943 ( MZSP) ; Vera Cruz , 1940, Tonico, 1♀ MEI 045963 ( MZSP) .