Lamproclasiopa xanthocera, Costa, Daniel N. R., Mathis, Wayne N. & Marinoni, Luciane, 2016

Costa, Daniel N. R., Mathis, Wayne N. & Marinoni, Luciane, 2016, A revision of the shore-fly genus Lamproclasiopa Hendel (Diptera, Ephydridae), ZooKeys 631, pp. 1-99 : 59-61

Taxon classification Animalia Diptera Ephydridae

Lamproclasiopa xanthocera sp. n. Figs 86-87, 88-91, 104

Diagnosis.

This species can be distinguished from congeners by the following combination of characters: Small to moderately small shore flies, body length 1.73-2.18 mm. Head: Frons with yellowish tan to golden tan microtomentum, some areas slightly darker; parafrons with slightly thinner investment of microtomentum; mesofrons evident by slight lateral lines. Antenna yellow; basal flagellomere with slightly darker dorsal margin. Face completely and more or less uniformly silvery white microtomentose, more thinly microtomentose ventrally except for extreme ventral margin, lacking vertical stripes; 2 prominent facial setae, dorsal seta at midheight, other seta near epistomal margin; parafacial thin, more densely silvery white microtomentose than face. Gena relatively short, gena-to-eye ratio 0.06-0.08. Thorax: Generally black. Mesonotum black with thin, golden brown microtomentum, subshiny, although less dense than microtomentum of frons; presutural supra-alar seta lacking or indistinguishable from surrounding setae pleural areas more sparsely microtomentose than mesonotum, blackish brown to black, becoming less microtomentose ventrally and posteriorly, subshiny to shiny. Wing completely hyaline, lacking darkened areas; costal vein ratio 0.59-0.60; M vein ratio 0.57-0.65. Femora grayish to blackish brown, subshiny; forefemur with 4-5 stout, peg-like setae on apical third along posteroventral margin; tibiae and tarsi yellow. Abdomen: Tergites shiny black, with little or very sparse microtomentum. Male terminalia (Figs 88-91): Epandrium in posterior view (Fig. 88) nearly as wide as long, as in inverted U, dorsal arch narrow, becoming wider ventrally, in lateral view (Fig. 89) narrowly triangular, widest ventrally, ventral margin broadly rounded; cercus in posterior view (Fig. 88) hemispherical, not fused with ventral margin of cercal cavity, uniformly setulose, in lateral view (Fig. 89) narrowly semicircular, slightly wider subdorsally than ventrally; gonite in ventral view (Fig. 90) more or less triangular, narrowed toward aedeagal base, wider toward hypandrium, in lateral view (Fig. 91) elongate, rod-like, end toward hypandrium narrower than opposite end; aedeagus in ventral view (Fig. 90) narrowly elongate, 6 × longer than wide, nearly parallel sided, apex pointed, in lateral view (Fig. 91) elongate, L-shaped, short arm basally, wider, thereafter parallel sided, membranous on apical ¼; phallapodeme in lateral view (Fig. 91) triangular, angle toward aedeagal base digitiform, longer than extension toward hypandrium, keel tapered, apex rounded, in ventral view (Fig. 90) rectangular, apical 1/3 to hypandrium slightly tapered, both apices truncate; hypandrium in ventral view (Fig. 90) as a broad, short H with posterior arms flaring posterolaterally, posterior margin broadly emarginate, anterior margin shallowly concave; in lateral view (Fig. 91) elongate, rod-like, anterior apex irregular.

Type material.

The holotype male of Lamproclasiopa xanthocera is labeled "BRAZIL. Paraná: Curitiba, UFPR [Universidade Federal do Paraná, Reserva Biológica] (25°26.9'S, 49°14'W; 915 m),1-2Feb2010[,] D. & W. N. Mathis/ USNM ENT 00118308 [plastic bar code label]/HOLOTYPE ♂ Lamproclasiopa xanthocera Costa, Mathis & Marinoni DZUP [red]." The holotype is double mounted (minuten pin in a block of plastic), is in excellent condition, and is deposited in DZUP. Paratypes are as follows: BRAZIL. Paraná. Morro do Araçatuba ( Município de Tijucas do Sul; 25°53.8'S, 49°01.2'W; 910 m), 27 Feb 2015, W. N. Mathis (2♀; DZUP, USNM). São Paulo. Estação Biológica de Boracéia, Salesópolis (23°32'S, 45°50.8'W), Aug 1969, N. Papavero (1♀; MZUSP).

Type locality.

Brazil. Paraná. Curitiba, Universidade Federal do Paraná, Reserva Biológica (25°26.9'S, 49°14'W; 915 m).

Distribution

(Fig. 104). Neotropical: Argentina, Brazil ( Paraná, São Paulo).

Etymology.

The species epithet, xanthocera , is of Latin derivation, meaning yellow horn and refers to the yellow antenna, one of the distinguishing features of this species.

Remarks.

Although similar to Lamproclasiopa bisetulosa , this species is distinguished from it and other congeners by having a generally microtomentose body, yellow antenna with little or no darkening along dorsal surfaces, a hyaline wing, and a blackish yellow foretarsus. The shape of structures of the male terminalia also distinguishes this species, especially the elongate, thick, and conspicuously sinuous aedeagus with an apical papilla-like apex.