Lamproclasiopa aracataca (Cresson)

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 : 73-76

Taxon classification Animalia Diptera Ephydridae

Lamproclasiopa aracataca (Cresson) Figs 81, 112-113, 114-117

Discocerina aracataca Cresson 1940: 5.

Discocerina (Lamproclasiopa) aracataca . Cresson 1946: 149 [review]. Wirth 1968: 7 [Neotropical catalog]. Mathis and Zatwarnicki 1995: 168 [world catalog].

Lamproclasiopa aracataca . Zatwarnicki and Mathis 2001: 36 [generic combination].

Diagnosis.

This species is distinguished from congeners by the following combination of characters: Small to moderately small shore flies, body length 1.80-2.35 mm. Head: Frons dull, anterior margin yellowish orange in some degree, posterior portion grayish black, concolorous with mesonotum, some specimens with frons entirely grayish black, without distinctly marked iridescent microtomentose stripes. Antenna mostly grayish black to black, only ventral margin of segments yellowish orange. Face nearly unicolorous, blackish gray, not distinctively marked; parafacial bare of ventroclinate setulae, generally dull, creamy white, contrasted with face. Gena moderately high, gena-to-eye ratio 0.17. Thorax: Mesonotum uniformly faintly grayish black, finely microtomentose, lacking stripes; presutural supra-alar seta well developed. Scutellum dorsally covered with fine, sparse setulae, sometimes almost bare. Wing completely hyaline, lacking pattern of spots; vein R2+3 with apical portion a continued extension of angle at merger with costa; costal vein ratio 0.50-0.53; M vein ratio 0.57-0.63. Forefemur with posteroventral setae slender, not stout and peg-like; femora and tibiae grayish black to black, apices of tibiae yellowish; tarsi entirely yellowish or with apical 1-2 tarsomeres darkened. Abdomen: Tergites more sparsely microtomentose than mesonotum, shinier black or brown, especially laterally and mostly of tergites 4 and 5. Male terminalia (Figs 114-117): Epandrium in posterior view (Fig. 114) roundly U-shaped, except for ventral gap, oval, widest a midheight, dorsal arch very narrow, gap at ventral margin widely and shallowly U-shaped with lateral margins becoming wider ventrally, each lateral arm widest ventrally with short, medial extension, almost touching opposite medial extension, ventral extension bearing numerous setulae loosely organized as a group; cercus hemispherical, tapered ventrally to narrowly rounded apex, more setulose dorsally; gonite in lateral view (Fig. 117) robustly rod-like, almost straight, wider toward hypandrium, in ventral view (Fig. 116) shallowly curved with extension toward aedeagal base tapered to a narrow apex, apex toward hypandrium widest, with a medial, blunt, short extension; aedeagus in lateral view (Fig. 117) elongate, narrowly triangular, tapered evenly to narrowly rounded apex, in ventral view (Fig. 116) as an elongate, very narrow, rod-like structure, widest sub-basally, thereafter tapered to apex, apex with a short nipple; phallapodeme in lateral view (Fig. 117) more or less triangular, with moderately long, narrow extensions toward aedeagal base and hypandrium, keel distinct, relatively narrow, somewhat blunt apically; hypandrium in lateral view (Fig. 117) generally narrow, rod-like, basal third obtusely angulate, narrowed, digitiform, apical 2/3 narrowly rectangular, in ventral view (Fig. 116) as a very broad, robust H with short arms, emarginate anteriorly and posteriorly, anterior emargination shallow, posterior emargination more deeply excavate, broadly and rounded U to V-shaped.

Type material.

The holotype female of Discocerina aracataca Cresson is labeled "Colombia Ujhelyi/Aracataca 1912. II./825/Holo-TYPE Discocerina ARACATACA E. T. Cresson Jr [red; " Discocerina ARACATACA" handwritten]." The holotype is double mounted (minuten pin in a thin rectangular piece of foam), is in excellent condition, and is deposited in the ANSP (6541).

Type locality.

Colombia. Magdalena: Aracataca (10°35.6'N, 74°12'W).

Other specimens examined.

ARGENTINA. Chubut: El Hoyo (42°3.8'S, 71°31.6'W), 21 Jan 1965, A. Kovacks (1♀; AMNH). Río Negro: Correntoso (41°5.94'S, 71°26.65'W), Nov 1926, R. C. & E. Shannon (1♂, 1♀; USNM); Lago Nahuel Huapi (east end; 41°06.5'S, 71°12.4'W) (1♂; BMNH); Puerto Blest (41°2.6'S, 71°49.6'W), 2 Dec 1926, R. C. & E. Shannon (1♂, 1♀; USNM); San Carlos de Bariloche (41°06.5'S, 71°12.4'W) (1♂; BMNH); Nov 1926, R. C. & E. Shannon (4♂, 2♀; USNM).

CHILE. Araucaína: Angol (37°48'S, 72°43'W), 15 Set 1931, D. S. Bullock (1♂; USNM). Aysen: Puerto Puyuguapi (44°19.5'S, 72°33.5'W), Feb, 13 Out 1939, G. H. Schwable (1♀; USNM). Bío Bío: El Abanico (37°20'S, 71°31W), 31 Dec 1950, A. E. Michelbacher, E. S. Ross (1♀; USNM); Nuble (40 km E San Carlos; 36°24.5'S, 71°31.5'W), 23 Dec 1950, A. E. Michelbacher, E. S. Ross (4♂, 2♀; USNM); Santa Barbara (25 km E; 37°29.3'S, 72°4.1'W; 350 m), 24 Jan 1978, W. N. Mathis (12♂, 1♀; USNM). Coquimbo: Incahuasi (29°13.6'S, 71°0.7'W), 30 Sep 1952, P. G. Kuschel (3♂; USNM); La Serena (50 km S; 30°21.25'S, 71°15.1'W), 1 Dec 1950, A. E. Michelbacher, E. S. Ross (1♀; USNM). Lanquihue: Casa Pangue (41°03'S, 71° 52'W), Dec 1926, R. C. & E. Shannon (1♂, 3♀; USNM); Castro (41°27.7'S, 72°56.1'W) (ex.; BMNH); Ensenada (41°12.6'S, 72°32.3'W) (ex.; BMNH); Los Riscos (41°13.7'S, 72°44.7'W), 14 Sep 1954, P. G. Kuschel (2♂, 1♀; USNM); Peulla (41°28'S, 72°57.7'W) (1♂; BMNH); Puerto Montt (41°28'S, 72°56'W), Dec 1926, R. C. & E. Shannon (2♂, 1♀; USNM); Puerto Varas (41°18.6'S, 72°59.6'W) (2♂; BMNH); Dec 1926, R. C. & E. Shannon (2♂, 1♀; USNM). Los Lagos: Chiloé Island, Chepu (on seashore; 42°5'S, 73°59.65'W), Oct 1958, G. Kuschel (11♂, 3♀; USNM); Chiloé Island, Ancud (41°52'S, 73°50'W), 20-28 Jan, 1952, G. Kuschel. (1♀; AMNH). Los Rios: Valdivia (25 km. N; 39°35.56'S, 73°14.55'W), 26 Jan 1978, W. N. Mathis (2♀; USNM). Maule: Cajon de Rio Claro, (S. E. Los Quenes; 34°59.9'S, 70°49'W; 1000-1200m), 9 Oct 1966, E. I. Schlinger (1♂; USNM). O’Higgins: Río Claro (5 km N Rengo; 34°24'S, 70°52'W; 300 m), 23 Jan 1978, W. N. Mathis (16♂, 2♀; USNM). Osorno: Anticura (1 km W; 40°39'S, 72°10'W; 430 m), 1-6 Feb 1978, W. N. Mathis (26♂, 23♀; USNM); Anticura (4 km W; 37°40'S, 72°01'W; 400 m), 3 Feb 1978, W. N. Mathis (1♀; USNM); Anticura (6 km W; 37°40'S, 72°01'W; 400 m), 3 Feb 1978, W. N. Mathis (1♂, 1♀; USNM); Río El Gringo (40°41'S, 71°59'W; 1015 m), 13 Feb 1978, W. N. Mathis (1♂; USNM); Lago Puyehue (SE shore; 40°45'S, 72°25.2'W), 6-10 Feb 1978, W. N. Mathis (9♂, 6♀; USNM); Lago Rupanco, El Encanto (40°49'S, 72°28'W), 6 Feb 1978, W. N. Mathis (1♀; USNM); Laguna El Espejo (40°44.5'S, 72°19.67'W), 7 Feb 1978, W. N. Mathis (1♀; USNM); Laguna El Pato (40°40.6'S, 72°0.2'W; 1100 m), 13 Feb 1978, W. N. Mathis (3♀; USNM); Laguna El Toro (40°45.2'S, 72°18.5'W; 780 m), 8 Feb 1978, W. N. Mathis (3♂, 3♀; USNM); Pucatrihue (40°32.6'S, 73°43.1'W), 27-30 Jan 1978, W. N. Mathis (7♂, 9♀; USNM); Termas de Aguas Calientes (1 km SE; 40°41'S, 72°21'W; 530 m), 7-8 Feb 1978, W. N. Mathis (5♂, 5♀; USNM). Santiago: El Alfalfal (33°30.1'S, 70°11.7'W; 1320 m), 22 Jan 1978, W. N. Mathis (13♂, 4♀; USNM); Quebrada de la Plata, Rinconada, Maipu (33°31'S, 70°47'W; 510 m), 16 Aug 1966, M. E. Irwin (2♀; USNM); Río Maipo (7 km E San José de Maipo; 33°35.8'S, 70°22.1'W; 1065 m), 22 Jan 1978, W. N. Mathis (1♂; USNM). Talca: Río Lircay (11 km N Talca; 35°23'S, 71°39'W; 85 m), 23 Jan 1978, W. N. Mathis (1♀; USNM). Valparaíso: Marga Marga (road to Colliguay; 33° 5.6'S, 71°12.8'W), 14-15 Mar 1964, L. E. Peña (2♂, 2♀; USNM).

PERU. Junin: Tarma (11°25'S, 75°41.2'W; 3000 m). 11 Jul 1965, P. & B. Wygodzinsky (2♀; AMNH). Lima: San Jeronimo de Surco (11°53.1'S, 76°26.4'W; 1900-2100 m), 17 Aug 1965, P. & B. Wygodzinsky (2♂, 3♀; AMNH).

Distribution

(Fig. 81). Neotropical: Argentina (Chubut, Río Negro), Chile ( Aracunaína; Aysen, Bío Bío, Coquimbo, Lanquihue, Los Lagos, Los Rios, Maule, O’Higgins, Osorno, Santiago, Talca, Valparaíso), Colombia (Magdalena), Peru (Junin, Lima).

Remarks.

This species is very similar and apparently closely related to Lamproclasiopa puella and is difficult to distinguish from that species using external characters. The diagnostic characters presented in original descriptions (anterior margin of frons yellowish orange, antenna mostly yellowish than grayish black, in opposition to Lamproclasiopa puella ) are inconsistent, and specimens of Lamproclasiopa puella could be identified as Lamproclasiopa aracataca and vice versa using them. We propose a more reliable character: Scutellar disc covered with fine, sparse setulae, sometimes appearing almost bare. The more definitive diagnostic characters are the shapes of structures of the male terminalia, especially the wide ventral apices of the epandrium, the phallapodeme that has an extended keel, and the gonite in ventral view that is nearly truncate basally. The shape of the hypandrium in ventral view is very similar to that of Lamproclasiopa puella with posterior arms that are less flared.