Argentinomyia taina Thompson & Montoya, 2023

Montoya, Augusto L. & Wolff, Marta, 2023, Taxonomic revision of the Neotropical genus Argentinomyia Lynch-Arribálzaga, 1891 (Diptera: Syrphidae), with description of 16 new species, Zootaxa 5234 (1), pp. 1-157 : 126-128

publication ID	https://doi.org/ 10.11646/zootaxa.5234.1.1
publication LSID	lsid:zoobank.org:pub:A540F250-BDE2-43F7-83A1-DA261F914B41
DOI	https://doi.org/10.5281/zenodo.7621174
persistent identifier	https://treatment.plazi.org/id/03C03256-AC3A-FF6F-0FF9-FAADF05EFF57
treatment provided by	Plazi
scientific name	Argentinomyia taina Thompson & Montoya
status	sp. nov.

Treatment

Argentinomyia taina Thompson & Montoya View in CoL sp. nov.

Proposed standard English name: Taina’s long-antennae flower fly.

Argentinomyia DR sp. 2 Thompson, unpublished

( Figs 77 View FIGURE 77 , 78 View FIGURE 78 and 95 View FIGURE 95 )

Type material. HOLOTYPE. Adult male, pinned, deposited at National Museum of Natural History. Original label: “ DOMINICAN REPUBLIC. Neyba Mountain Range , San Juan Serra Neiba ” / “ Trail to Sabana del Silencio, 11km SSW de El Cercado, 18,666 667, -71,500000” / “ 1700–1900 m, 10.vii.2006, N.E. Woodley ”. “ HOLOTYPE / Argentinomyia taina sp. nov. / Thompson & Montoya 2023” ( USNM ENT 01443645 ) . PARATYPES. DOMINICAN REPUBLIC. La Vega, Sabana Kelly (= Quéliz) / Valle Nuevo 18,750 116, -70,616826, 2294 m, / 2.iv.2003, D. Pérez, R. Bastardo, B. Hierro (2♀, USNM ENT 00038429 View Materials , 01443644 View Materials ); …, La Compartición, Pico Duarte, P. N. Armando Bermúdez / 19,025 337, -70,99825, 3087 m, RD-255 / 1.vii.2004, D. Pérez (1♁, USNM ENT 00038438 View Materials ; Genitalia dissected) .

Length (n= 3): Body, 8.5–9.3 mm; Wings, 7.5–7.6 mm.

Diagnosis. Frontal triangle with transversal golden-brownish pollinose band touching slightly the sides of the eyes; scutum with three brownish vittae, a median wider brown vitta extending along the thorax, in addition to lateral slender brownish vittae; metatibia mostly brownish apically, yellow basally and slightly obscured on apical 1/5 dorsally; 3 rd and 4 th terga with maculae extending to the apical 2/3; 5 th tergum with a pair of small lateral rounded maculae; surstylus in lateral view very elongated and widened dorsally, with a small extension at the ventral margin.

Description. MALE. Head ( Fig. 77A View FIGURE 77 ): Face black, white pollinose, white pilose; tubercle low, bare, area above the tubercle white pollinose; frontal triangle silver pollinose laterally, black pilose; frontal triangle brownishgrey pollinose, black pilose; gena black; occiput black pilose dorsally, yellow hoary ventrally. Antenna yellowishorange, short, ratio 1.0:1.3:1.4, basoflagellomere as long as the scape and pedicel together, darker toward the end and dorsal on basoflagellomere, pile black, apically rounded; arista brown. Thorax ( Figs 77B–C View FIGURE 77 ): Aeneous grey, yellow-brownish pilose and pollinose, with three brownish vittae, a median wider brown vitta extending along the thorax, in addition to lateral slender brownish vittae. Pleura shining aeneous, grey pollinose, pile yellowish and sparse. Scutellum shining brassy to aeneous, golden pilose. Wing ( Fig. 77C View FIGURE 77 ): Lightly tinged with brown, stigma brownish, membrane microtrichose, except cell c bare on basal 1/3, cells bm, r and cua bare on basal 1/3, the apical margin of the wing to just past the end of third vein brownish, giving the impression of an elongated brown macula; calypter wholly brown; plumula white; halter white, capitulum white. Legs ( Fig. 77C View FIGURE 77 ): Yellow, pro- and mesofemora yellow, metafemur obscured on basal 2/6 and apical 1/6 or little more; pro- and mesotibiae yellow, metatibia brown, only yellow on basal 1/7; 1 st protarsus yellow on basal 1/3, other segments brown, 1 st mesotarsus extensively, other segments brown, metatarsus brown; coxae golden-brown. Abdomen ( Fig. 77B View FIGURE 77 ): Black, parallelsides, 1 st tergum shining metallic aeneous-black; 2 nd tergum with a shallow, diffuse, bluish metallic maculae; 3 rd and 4 th terga with rectangular maculae, medio-apically rounded and extending to the apical 1/2, respectively; 5 th tergum without maculae; pile yellow; male genitalia: surstylus in lateral view ( Fig. 78A View FIGURE 78 ) very elongated and widened dorsally, with a small extension at the ventral margin, shorter than broad; hypandrium in ventral view ( Fig. 78C View FIGURE 78 ) expanded laterally towards the apex; aedeagal lobe in ventral view ( Fig. 78C View FIGURE 78 ) circular, apex rounded.

FEMALE ( Figs 77D–F View FIGURE 77 ). Similar to male except for usual sexual dimorphism, but differing in the frontal triangle with transversal golden-brownish pollinose band touching slightly the sides of the eyes. Thorax comparatively more bluish, lateral vittae slender. Abdomen bluish, with a pair of apically rounded maculae on 3 rd to 4 th terga, reaching to the apical 1/2 of each segment, there is an additional small rounded macula on 5 th tergum reaching the apical 1/2.

Taxonomic notes. Argentinomyia taina sp. nov. is similar to A. praeusta and A. aurifacies differing by the following combination characters: the frontal triangle with a transversal golden-brownish pollinose band, touching slightly the sides of the eyes; scutum with three brownish vittae, a median wider brown vitta extending along the thorax, in addition to lateral slender brownish vittae ( Figs 77A, C, D, F View FIGURE 77 ); metatibia mostly brownish apically, yellow basally and slightly obscured on apical 1/5 dorsally ( Figs 77A, C, D, F View FIGURE 77 ); 3 rd and 4 th terga with maculae extending to the apical 2/3; 5 th tergum with a pair of small lateral rounded maculae ( Figs 77B, E View FIGURE 77 ). In A. aurifacies sp. nov. the face extensively covered by golden pollinose and pilose; female frontal triangle with a transversal golden-brownish pollinose band ( Figs 14A, C, D, F View FIGURE 14 ); metafemur yellow, only obscured on basal 2/6 and apical 1/6 or little more ( Figs 14A, C, D, F View FIGURE 14 ); 3 rd and 4 th terga with rectangular maculae, extending to the apical 2/3, respectively; 5 th tergum with a pair of small lateral rounded maculae, reaching the 1/2 of the segment length ( Figs 14B, E View FIGURE 14 ). In A. praeusta the female frontal triangle with a medial white pollinose vitta ( Figs 65A, C, D, F View FIGURE 65 ); metafemur obscured on apical 1/3 or little more ( Figs 65A, C, D, F View FIGURE 65 ); 3 rd and 4 th terga with maculae extending to the apical 1/2; 5 th tergum without a pair of small lateral rounded maculae ( Figs 65B, E View FIGURE 65 ). Based on males, A. taina sp. nov. differs from A. aurifacies sp. nov. and A. praeusta in having the surstylus in lateral view ( Fig. 78A View FIGURE 78 ) very elongated and widened dorsally, with a small extension at the ventral margin [versus surstylus with dorsal margin slightly concave and ventral margin slightly convex in A. praeusta ( Fig. 66A View FIGURE 66 ); surstylus with dorsal and ventral margins approximately of the same width in the whole length in A. aurifacies sp. nov. ( Fig. 15A View FIGURE 15 )]; hypandrium in ventral view expanded laterally towards the apex in A. taina sp. nov. ( Fig. 78C View FIGURE 78 ) and A. praeusta ( Fig. 66C View FIGURE 66 ) [versus hypandrium narrowed laterally towards the apex in A. aurifacies sp. nov. ( Fig. 15C View FIGURE 15 )] (see “diagnosis” under each species or key).

Etymology. Noun in apposition, the name “ taina ” refers to the extinct indigenous civilization who inhabited the Islands of the West Indies.

Geographical range. The known range of Argentinomyia taina sp. nov. (n= 4) is restricted to the Cordillera Central in the Dominican Republic (San Juan Sierra Neiba, La Vega, Sabana Kelly (= Quéliz) / Valle Nuevo, La Compartición, Pico Duarte) ( Fig. 95 View FIGURE 95 ). The species is endemic to the West Indies domain at middle and high altitudes (1700–3087 m) in the Hispaniola province .