Lamproclasiopa brunnea, 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 : 16-20

Taxon classification Animalia Diptera Ephydridae

Lamproclasiopa brunnea sp. n. Figs 8-9, 10-13, 14

Diagnosis.

This species is distinguished from congeners by the following combination of characters: Moderately small shore flies, body length 2.60 mm. Head: Frons shiny black brown, with ocellar triangle and fronto-orbital plate densely setulose. Antenna blackish brown, slightly lighter than head, posterior margin of flagellomere light brown; face blackish brown, shiny; parafacial yellowish brown. Gena moderately high, gena-to-eye ratio 0.12-0.15. Thorax: Mesonotum shiny black, covered with microtomentum; presutural supra-alar seta lacking or indistinguishable from surrounding setae; pleural region less microtomentose, anepisternum and katepisternum almost bare, shiny black. Wing hyaline, lacking any pattern or markings; costal vein ratio 0.52-0.64; M vein ratio 0.59-0.65; Legs blackish brown except yellowish tarsi; forefemur with posteroventral setae slender, not stout and peg-like. Abdomen: Generally shiny black, bare of microtomentum; tergites 3-5 equal in length and larger than tergites 1-2. Male terminalia (Figs 10-13): Epandrium in posterior view (Fig. 10) generally oval, higher than wide, dorsal portion very thin, each lateral arm gradually becoming wider ventrally, widest on apical third, apex rounded, oriented medially, ventral half with slightly increased number of setulae, in lateral view (Fig. 11) as roughly rectangular, slightly wider ventrally with rounded posteroventral portion, pointed anteroventrally; cerci in posterior view (Fig. 10) elongate, thin, generally shallowly arched, ventral and dorsal apices acutely pointed, setulose evenly along length, in lateral view (Fig. 11) as an inverted drop; gonite in lateral view (Fig. 13) rod-like, dorsal fourth curved basally and pointed, in ventral view (Fig. 12) irregularly bar-like, curved, apex toward aedeagal base tapered, pointed apically, apex toward hypandrium bluntly rounded; aedeagus in lateral view (Fig. 13) more or less rectangular, basal third wider than apical portion, narrowest medially, apex angulate, in ventral view (Fig. 12) elongate, thin, after slightly bulbous base parallel sided, apex tapered, pointed; phallapodeme in lateral view (Fig. 13) as a dissected triangle, with an obvious keel, vertex toward hypandrium sharply tapered, acutely pointed, vertex toward aedeagal base thumb-like, keel narrow, moderately elongate, pointed, in ventral view (Fig. 12) as an asymmetrical spool, wider toward aedeagal base, apex toward hypandrium shallowly trilobed; hypandrium in lateral view (Fig. 13) elongate, thin, irregularly rod-like, shallowly sinuous, both apices narrowly rounded; in ventral view (Fig. 12) robustly Y-shaped, with base wide, lateral margins almost serrate, arms of Y posterior, flared posterolateral, each arm thin, digitiform, forming posterior, evenly rounded, moderately deep emargination.

Type material.

The holotype male of Lamproclasiopa brunnea is labeled "COSTA RICA. Prov. San José. Moravia. Zurquí de Moravia, Tower path. 1600m. 2-9 AGO 2013. Proyeto ZADBI. Mix methods, ZADBI-1076/HOLOTYPE ♂ Lamproclasiopa brunnea Costa, Mathis & Marinoni USNM [red]." The holotype is double mounted (glued to a paper triangle) and is in very good condition, and is deposited in MNCR-A. Thirty-eight paratypes (20♂, 18♀; MNCR-A, USNM) bear the same label data as the holotype. Other paratypes are as follows: COSTA RICA. Cartago. Paraíso, Parque Nacional Tapantí (09°43.3'N, 83°46.5'W; 1600 m), 4-11 Ago 2013, Proyeto ZADBI (1♀; MNCR-A). Guanacaste. Macizo Miravalles, Cabro Muco Station (10°43.1'N, 84° 51.3'W; 1100 m), 15 Mar– 2 Abr 2003, J. Azoifeifa. (1♀; MNCR-A).

Type locality.

Costa Rica. San José. Zurquí de Moravia (10°02.8'N, 84°0.6'W; 1588 m).

Distribution

(Fig. 14). Neotropical: Costa Rica (Cartago, Guanacaste, Puntarenas, San José).

Etymology.

The species epithet, brunnea , is of Latin derivation and means brown, referring to the dark brown color of this species, especially its head.

Remarks.

This species is very similar and superficially appear to be closely related to Lamproclasiopa ecuadoriensis , as evidenced by the generally dark brown body color and yellowish parafacies of both species. The thoracic pleural area of Lamproclasiopa brunnea , however, is more sparsely microtomentose. Moreover, the frontal microtomentum of Lamproclasiopa brunnea covers only the fronto-orbital plates and the ocellar triangle, which easily distinguishes this species from Lamproclasiopa ecuadoriensis .