Polytrichophora adarca, Mathis, Wayne N. & Zatwarnicki, Tadeusz, 2012

Mathis, Wayne N. & Zatwarnicki, Tadeusz, 2012, A revision of the new world species of Polytrichophora Cresson and Facitrichophora, new genus (Diptera, Ephydridae), ZooKeys 231, pp. 1-116 : 17-23

Polytrichophora adarca sp. n. Figs 2428

Polytrichophora conciliata in part of authors, not Cresson [misidentification]. Mathis and Zatwarnicki 1995: 184 [world catalog].

Diagnosis.

This species is distinguished from congeners by the following combination of characters: Small to moderately small shore flies, body length 1.45-2.10 mm.

Head: Frons dull, heavily microtomentose, 2-toned, mostly tan with some faint golden reflections on posterior 2/3, anterior 1/3 (from level of fronto-orbital setae anteriad), gray. Antenna mostly yellow to yellowish orange, anterior portion of pedicel and basodorsal area of basal flagellomere with some blackish coloration; arista with 5 dorsal rays. Face at narrowest point about equal to combined length of pedicel and basal flagellomere; face densely microtomentose, microtomentum with shiny to pearly luster, mostly white but with considerable gold coloration in antennal grooves and extended laterally onto parafacial; parafacial not markedly differing from midfacies in color, more golden dorsally, becoming whiter ventrally; parafacial with slight to considerable ventral dilation, 2-3 times wider ventrally than dorsally; gena relatively short, subequal to height of basal flagellomere, gena-to-eye ratio 0.12-0.14.

Thorax: Mesonotum mostly dull, densely microtomentose, concolorous with posterior 2/3 of frons; pleural area blackish gray. Stout setae on apical half; anterior margin of wing lacking large, spine-like setae; costal vein ratio 0.63-0.75; M vein ratio 0.48-0.53. Forefemur lacking row of 9-10 short, stout setae along apical half of anteroventral surface; forefemur with anteroventral comb-like row of 7-10 short setulae, each equal to width of femur; tibiae mostly yellowish; basal tarsomeres yellow, apical 1-2 brown.

Abdomen: Tergites dull to subshiny, gray to blackish brown; tergites 1-4 bicolored, mostly blackish brown dorsally, gray lateroventrally; tergites 3-4 of male subequal, 4th not unusually longer, tergite 3 not produced ventrolaterally; dorsum of tergite 5 of male not darker than preceding tergites and usually with distinct, semicircular, grayish areas laterally; tergite 5 of male in dorsal view blunt, truncate, bearing row of 6-10, distinctly larger setae along extreme posterior margin with posterodorsal orientation; tergite 5 of male also gray on posterior 1/2-1/3; sternites 3-4 of male with dense row of setulae along posterior margin; sternite 5 as 2 subtriangular sternites. Male terminalia (Figs 24-27): Epandrium narrowly connected dorsally above cerci (Fig. 24), in posterior view tapered ventrally to an acute point (Fig. 24); ventral third of epandrium in lateral view curved anteriorly, slightly expanded apically, narrowly spatulate, slightly curved anteroventrally, pointed apically, and with subapical ledge that also ends ventrally in a point, bearing a large, subapical seta laterally (Fig. 27); gonite in lateral view rod-like, shallowly curved (Fig. 27); aedeagus in lateral view (Fig. 27) with basiphallus tubular, very shallowly sinuous, narrowed apically to form digitiform process, distiphallus membranous, longer and narrower than basiphallus, folded back on basiphallus, angulate at basal 1/3, thereafter distinctly curved; phallapodeme in lateral view (Fig. 27) elongate, narrow, bar-like, narrower basally, gradually expanded toward apex, keel much reduced; hypandrium in lateral view (Fig. 27) with apices acutely tapered, swollen medially, in posterior view (Fig. 26) deeply H-shaped, anterior arms with one side longer.

Type material.

The holotype male is labeled "BARBADOS. Chr[i]st Ch[u]rch: Graeme Hall Swamp[,] 13°04.2'N, 59°34.7'W [,] 21-22May1996, D. & W. Mathis, H. Williams/ HOLOTYPE ♂ Polytrichophora adarca Mathis & Zatwarnicki, USNM [red]/USNM ENT 00141761 [plastic bar code label]." The holotype is double mounted (minuten pin in a block of plastic), is in excellent condition, and is deposited in the USNM. Thirty-six paratypes (32♂, 4♀; USNM) bear the same locality data as the holotype with dates from 21 May– 12 Sep 1996, 1997. Other paratypes are as follows: BARBADOS. St. Andrew: Belleplaine (13°14.8'N, 59°33.6'W), 21 May 1996, D. and W. N. Mathis, H. B. Williams (4♂, 1♀; USNM); Long Pond (13°15.1'N, 59°33.3'W), 21 May-10-11 Sep 1996, D. and W. N. Mathis, H. B. Williams (12♂, 8♀; USNM); Walkers Bridge (13°15'N, 59°34.5'W), 11 Sep 1996, W. N. Mathis (1♂; USNM).

Type locality. Barbados. Christ Church: Graeme Hall Nature Sanctuary (13°04.2'N, 59°34.7'W; swamp).

Other specimens examined. Neotropical. BELIZE. Stann Creek: Cockscomb Basin Wildlife Sanctuary (16°47'N, 88°30'W), 5-6 Apr 1993, W. N. Mathis (♂, ♀; USNM); Glover'S Reef (Southwest Cay; 16°42.9'N, 87°51'W), Jul 1989, W. N. Mathis (7♂, 3♀); Man of War Cay (17°13'N, 87°54'W), Jun-Nov 1987, 1989, 1990, D. and W. N. Mathis, H. B. Williams (19♂, 24♀; USNM); Mullins River (17 km N Dangriga; 17°06.2'N, 88°17.8'W), 29 Mar 1988, W. N. Mathis (1♀; USNM); Round Cay (near Coco Plum Cay; 16°52'N, 88°07'W), Mar 1988, W. N. Mathis (4♂, 5♀; USNM); Saddle Cay (17°13.9'N, 87°31'W), Mar 1988, W. N. Mathis (3♂, 4♀; USNM); Sittee River, Possum Point Biological Station (16°52.1'N, 88°22.5'W), 6 Nov 1987, D. and W. N. Mathis (1♀; USNM); Stewart Cay (16°46'N, 88°09'W), Mar-Jul 1988, 1989, W. N. Mathis, H. B. Williams (4♂, 14♀; USNM); Tobacco Range (16°52.9'N, 88°04.9'W), Jul 1989, W. N. Mathis, H. B. Williams (4♂, 4♀; USNM); Twin Cays (Aanderaa Flats, dock area, east shore of East Island, mud flat near Lair Channel, south end of West Island, West Bay; 16°49.9'N, 88°06.1'W), Jan-Jul 1987, 1988, 1989, 1990, W. N. Mathis, C. Feller, H. B. Williams (61♂, 84♀; USNM); Wee Wee Cay (16°45.9'N, 88°08.6'W), Mar–Jul 1987, 1988, 1989, W. N. and D. Mathis, C. Feller (11♂, 25♀; USNM). Belize District: Turneffe Islands: Rope Walk Cay (17°13'N, 87°51'W), Mar 1993, W. N. Mathis (1♀).

COSTA RICA. Guanacaste: Bagaces, Fortuna, Z. P. Miravalles, Sector Cabro Muco (10°42.7'N, 85°09.3'W; 980 m), 8-31 Jul 2002, J. D. Gutiérez (2♀; INBIO); Cañas, Rio Tempisque (10°25.6'N, 85°05.7'W), 7-9 Jul 2003, D. Briceño (2♂, 6♀; INBIO); Nandayure, Isla Berrugate (10°02.6'N, 85°10.6'W; 0-100 m), 27 Aug 2003, W. Porras (1♀; INBIO); Nicoya, Isla Pájaros (09°52.1'N, 84°54.6'W), 16 Nov 2004, B. Gamboa (1♀; INBIO); Parque Nacional Marino Las Baulas, Playa Grande (10°19.3'N, 85°50.5'W; 0-100 m), 19-25 Aug 2003, D. Briceño (2♂, 5♀; INBIO); Playa Tamarindo (10°17.8'N, 85°50.6'W; swept from sandy mud flats around brackish lagoon), 28 Mar 1987, W. E. Steiner (11♂, 12♀; USNM); Playa Puerto Soley (11°02.5'N, 85°40.1'W; beach), 16 Jun 2003, D. and W. N. Mathis (15♂; USNM). Limón: R. V. S. Grandoca-Manzanillo, Playa Gandoca (09°35.9'N, 82°36.78'W; 0 m), 23 May 2004, Y. Cardenas (1♀; INBIO); Talamanca ( Estación Gandoca; 09°37.4'N, 82°41.7'W), 23 May 2004, Y. Cardenas (1♂; INBIO); Westfalia (4 km S; 9°54.5'N, 82°59'W; beach), 27 Jun 2001, W. N. Mathis (4♂, 1♀; USNM). Puntarenas: Bahia Gigante (Rio Lajas; 9°53.8'N, 84°56'W; beach), 22 Jun 2001, D. and W. N. Mathis (16♂, 3♀; USNM); Cabuye (Rio Lajas; 9°37'N, 85°04.8'W), 20 Jun 2001, D. and W. N. Mathis (6♂, 1♀; USNM); Chomes (10°2.7'N, 84°54.7'W), 19 Jun 2001, W. N. Mathis (15♂, 3♀; USNM); Dominical (9°14.8'N, 83°51.4'W; 0-2 m), 11 Jun 2003, D. and W. N. Mathis (23♂; USNM); Drake (8°41.4'N, 83°40.1'W), 12 Aug 2001, D. and W. N. Mathis (2♂, 2♀; USNM); Isla Bejuco (10°00'N, 85°02'W; 0-24 m), 16 Oct 2003, W. Porras (1♀; INBIO); Montezuma (1 km S; 9°39'N, 85°04.3'W), 20 Jun 2001, D. and W. N. Mathis (1♀; USNM); Parrita (9°31.2'N, 84°19.6'W; 8-9 m), 10 Jun 2003, D. Mathis (1♀; USNM); Playa Manuel Antonio (6 km SE Puerto Quepos; 9°22.9'N, 84°08.7'W), 30 May 1988, J. M. Hill, J. M. Mitchell, J. M. Swearingen, W. E. Steiner (2♂, 1♀; USNM); Pochotal (9°31.4'N, 84°28.4'W; 0-2 m), 12 Jun 2003, D. and W. N. Mathis (13♂, 1♀; USNM); Puntarenas (9°58.5'N, 84°50.9'W), 18 Jun 2003, D. and W. N. Mathis (1♂, 1♀; USNM); San Pedrillo (8°37.2'N, 83°44.1'W), 12-15 Aug 2001, D. and W. N. Mathis (17♂, 1♀; USNM).

CUBA. Havana: Havana (beach; 23°5.8'N, 82°27.7'W), 2-14 Dec 1994, W. N. Mathis (1♂, 1♀; USNM). Sancti Spiritus: La Boca (4 km S; 21°45.9'N, 80°01.5'W), 12 Dec 1994, W. N. Mathis (3♂, 6♀; USNM); Playa Ancón (21°44.1'N, 79°59.9'W), 12 Dec 1994, W. N. Mathis (5♂, 1♀; USNM).

DOMINICA. Cabrits Swamp (15°35'N, 61°29'W), 1 Feb-19 Jun 1965, 1991, D. and W. N. Mathis, W. W. Wirth (6♂, 5♀; USNM); Grande Savane (pond margin), 20 Mar 1965, W. W. Wirth (15♂; USNM); Macoucheri (seashore), 1 Feb 1965, W. W. Wirth (1♂, 2♀; USNM).

DOMINICAN REPUBLIC. Azua: Puerto Viejo (18°20.9'N, 70°50.4'W), 14 May 1995, W. N. Mathis (2♂, 2♀; USNM). El Seibo: Rincón (near; 18°45.3'N, 68°55.7'W), 12 May 1995, W. N. Mathis (1♂; USNM). Independencia: near Jimani (18°32.6'N, 71°50.3'W), 20 May 1998, D. and W. N. Mathis (1♂; USNM); Mella (canal W; 18°21.5'N, 71°25.7'W), 20 May 1998, D. and W. N. Mathis (4♂, 3♀; USNM). La Altagracía: Bayahibe (18°22.3'N, 68°50.4'W), 13 May 1994, W. N. Mathis (3♂; USNM). La Romana: Isla Saona, Mano Juan (18°08.1'N, 68°44.5'W), 13 May 1995, W. N. Mathis (9♂, 1♀; USNM). La Vega: Salto Guasara (near Jarabacoa; 19°04.4'N, 70°42.1'W; 680 m), 9 May 1995, W. N. Mathis (1♀; USNM). Monte Cristi: Monte Cristi (beach; 19°51.5'N, 71°39.5'W), 18 May 1995, W. N. Mathis (1♂; USNM). Peravia: Rio Ocoa (San José Ocoa; 18°31.7'N, 70°30.4'W), 21 May 1998, D. and W. N. Mathis (1♂; USNM). Puerto Plata: Rio Camu (14 km E Puerto Plata; 19°11.9'N, 70°37.4'W), 17 May 1995, W. N. Mathis (1♂; USNM). San Cristobal: Rio Haina (18°25.9'N, 70°00.4'W), 27 May 1998, D. and W. N. Mathis (3♂; USNM); Nigua (18°22.4'N, 70°03'W), 27 May 1998, D. and W. N. Mathis (1♀; USNM).

ECUADOR. Guayas: Boliche (14.5 km S; 2°09.4'S, 79°35.5'W), 14 Jan 1978, W. N. Mathis (2♀; USNM). Manabi: Bahia de Caraquez (0°36.5'S, 80°25.8'W), 10 Jan 1978, W. N. Mathis (5♂, 22♀; USNM); Bahia de Caraquez (35.6 km E; 0°35.8'S, 80°13.5'W), 8-9 Jan 1978, W. N. Mathis (3♀; USNM).

GRAND CAYMAN. Airport (2 km E; 19°17.1'N, 81°21'W), 26 Apr 1994, W. N. Mathis (3♂, 5♀; USNM); Airport (W end; 19°17.4'N, 81°22.2'W), 26 Apr 1994, W. N. Mathis (1♀; USNM); Frank Sound Road (19°18.9'N, 81°10.9'W), 28 Apr 1994, W. N. Mathis (3♂, 3♀; USNM); George Town Harbour (19°18'N, 81°22.9'W), 28-29 Apr 1994, W. N. Mathis (1♂; USNM); Governor Gore Bird Sanctuary (19°16.7'N, 81°18.5'W), 25 Apr 1994, W. N. Mathis (9♂, 2♀; USNM); Heritage Beach (19°18'N, 81°9.8'W), 28 Apr 1994, W. N. Mathis (1♂, 1♀; USNM); Spotts (19°16.5'N, 81°19.1'W), 25 Apr 1994, W. N. Mathis (3♀; USNM).

GRENADA. St. George: Airport (Point Salines; 11°59.9'N, 61°46.1'W), 15 Sep 1996, W. N. Mathis (4♂, 2♀; USNM); Airport (Point Salines; 12°05'N, 61°46.9'W), 11-12 Sep 1997, W. N. Mathis (17♂, 2♀; USNM); Beauséjour Bay (12°05.5'N, 61°44.9'W), 21 Sep 1996, W. N. Mathis (1♂; USNM); True Blue Beach (11°59.9'N, 61°46.1'W), 15 Sep 1996, W. N. Mathis (1♀; USNM). St. Patrick: Bathway Beach (12°12.6'N, 61°36.7'W), 18-20 Sep 1996, 1997, W. N. Mathis (11♂, 2♀; USNM).

GUYANA. Hope Beach (6°44.7'N, 57°57.3'W), 22 Apr 1994, 1995, W. N. Mathis (12♂, 13♀; USNM); Mahaica (6°42.8'N, 57°55.6'W), 22 Apr 1995, W. N. Mathis (15♂, 5♀; USNM); Mahaica (3 km W; 6°43.5'N, 57°56.6'W), 14 Apr 1994, W. N. Mathis (3♂, 1♀; USNM).

HAITI. Baie de Chouchou (19°49'N, 72°28.5'W), 8 Jun 1978, L. Raccurtt, R. Lowrie (1♂; USNM).

HONDURAS. Cortés: Puerto Cortés /Omoa (15°49'N, 87°56.2'W), 26 Sep 1995, D. and W. N. Mathis (1♂; USNM).

JAMAICA. Clarendon: Farquhars Beach (17°50.9'N, 77°22.8'W), 9 May 1996, D. and W. N. Mathis, H. B. Williams (11♂, 12♀; USNM); Grantham (18°09.3'N, 77°23.8'W; 340 m), 16 Apr 2000, W. N. Mathis (1♂; USNM); Milk River Bath (mangroves), 11 Mar 1970, T. Farr, W. W. Wirth (4♂, 2♀; USNM); Portland Cottage (17°45.4'N, 77°11'W), 13 May 1996, D. and W. N. Mathis, H. B. Williams (1♂; USNM); Rest (3.5 km N; 17°54.1'N, 77°21.1'W), 9 May 1996, D. and W. N. Mathis, H. B. Williams (3♂, 1♀; USNM). Manchester: Alligator Pond (17°52.1'N, 77°33.9'W), 8 May 1996, D. and W. N. Mathis, H. B. Williams (10♂, 6♀; USNM); near Mandeville (18°03.5'N, 77°31.9'W), 15-18 Apr 2000, W. N. Mathis (1♀; USNM). Portland: Berridale (18°06.5'N, 76°20'W), Rio Grande River, 25 Apr 2000, W. N. Mathis (1♂; USNM); Long Bay (2.3 km W; 18°06.5'N, 76°20'W), 24 Apr 2000, W. N. Mathis (1♂; USNM); Reach (4 km N; 18°03.6'N, 76°20.4'W), 15 May 1996, D. and W. N. Mathis, H. B. Williams (4♂; USNM). St. Andrew: Mavis Bank (1.7 km E; 18°02.4'N, 77°39.5'W; 575 m), Yallahs River, 21-22 Apr-1 May 2000, W. N. Mathis (1♂; USNM); Mavis Bank (4.3 km SE; 18°01.4'N, 76°38.1'W; 480 m); Yallahs River, 22-23 Apr 2000, W. N. Mathis (4♂, 2♀; USNM). St. Elizabeth: Black River (18°01.4'N, 77°51.1'W), 11 May 1996, D. and W. N. Mathis, H. B. Williams (1♂, 2♀; USNM); Brae River (18°05.2'N, 77°39.3'W), 10 May 1996, D. and W. N. Mathis, H. B. Williams (2♂; USNM); Brae River (2 km S; 18°04.2'N, 77°39.5'W), 10 May 1996, D. and W. N. Mathis, H. B. Williams (5♂, 2♀; USNM); Elim (18°07.1'N, 77°40.6'W), 10 May 1996, D. and W. N. Mathis, H. B. Williams (2♀; USNM). St. Catherine: Port Henderson (17°56'N, 76°53'W; bay shore), 24 Feb 1969, W. W. Wirth (2♀; USNM). St. Thomas: Rozelle (17°52.3'N, 76°27.7'W), 14 May 1996, D. and W. N. Mathis, H. B. Williams (1♀; USNM); Yallahs River (mouth; 17°53'N, 76°35.6'W), 14 May 1996, D. and W. N. Mathis, H. B. Williams (1♂; USNM). Westmoreland: Negril Beach (18°16.4'N, 78°21.2'W; mangrove, rocky shore), 12 Mar 1970, W. W. Wirth (3♀; USNM); Savanna-La-Mar (18°13'N, 78°08'W), 13 Mar 1970, W. W. Wirth (7♂, 4♀; USNM).

MEXICO. Chiapas: Boca de Cielo (17 km S Puerto Arista; 15°51.1'N, 93°40.4'W), 18 May 1985, A. Freidberg, W. N. Mathis (1♀; USNM); Puerto Arista (2 km E; 15°58.5'N, 93°41.1'W), 18 May 1985, A. Freidberg, W. N. Mathis (4♂, 5♀; USNM).

PANAMA. Canal Zone: Kobbe Beach (Playa Bonita; 8°53.9'N, 79°34.7'W), Jul 1967, W. W. Wirth (1♂, 6♀; USNM). Coclé: Playa Santa Clara (8°22.4'N, 80°06.4'W), 2 Jul 1967, W. W. Wirth (7♂, 21♀; USNM).

PUERTO RICO. Arecibo (beach; 18°28.7'N, 66°42'W), 23 Sep 1995, D. and W. N. Mathis (1♂, 1♀; USNM); Fajardo, Las Croabas (Seven Seas Beach; 18°23'N, 65°37'W), 17 Feb 1996, W. E. Steiner, J. M. Swearingen (1♂; USNM); Playa de Guayanilla (18°0.4'N, 66°46.1'W), 19 Sep 1995, D. and W. N. Mathis (11♂, 1♀; USNM); Playa de Ponce (17°58.9'N, 66°37.2'W), 26 Apr 1954, H. J. Teas (1♂, 1♀; USNM).

ST. LUCIA. Castries (5 km S; 13°59'N, 60°00'W), 16 Jun 1991, D. and W. N. Mathis (2♂, 4♀; USNM); Dauphin Boguis (1.6 km S Marquis; 14°01'N, 60°55'W), 17 Jun 1991, D. and W. N. Mathis (1♀; USNM); Fond St. Jacques (13°50'N, 61°02'W), 13-14 Jun 1991, W. N. and D. Mathis (1♂; USNM); Laborie (5 km W; 13°49'N, 60°54'W), 15 Jun 1991, D. and W. N. Mathis (3♂, 3♀; USNM); Soufrière (beach; 13°51'N, 61°54'W), 11-12 Jun 1991, W. N. and D. Mathis (1♀; USNM); Sulphur Spring (13°50'N, 61°03'W), 14 Jun 1991, D. and W. N. Mathis (1♂, 4♀; USNM).

ST. VINCENT. Charlotte: Spring (13°11.1'N, 61°08.5'W), 6 Sep 1997, W. N. Mathis (4♂, 1♀; USNM). St. Andrew: Buccament Bay (near beach; 13°11'N, 61°16'W), 25-28 Mar 1989, W. N. Mathis (20♂, 21♀; USNM); Layou (13°12'N, 61°17'W), 8 Jun 1991, D. and W. N. Mathis (3♀; USNM). St. George: Yambou Head, 27 Mar 1989, W. N. Mathis (2♂; USNM). St. Patrick: Cumberland Bay (13°16'N, 61°16'W), 15 Sep 1997, W. N. Mathis (10♂, 9♀; USNM).

TRINIDAD AND TOBAGO. Tobago. St. Patrick: Pigeon Point (beach; 11°9.7'N, 60°50'W), 19 Apr 1994, D. and W. N. Mathis (13♂, 7♀; USNM). St. Paul: Delaford, Kings Bay (11°16'N, 60°32.8'W), 13 Jun 1993, W. N. Mathis (5♂, 1♀; USNM); Kendall (11°14.3'N, 60°35.7'W), 21 Apr 1994, W. N. Mathis (2♂, 1♀; USNM). Trinidad. St. Andrew: Lower Manzanilla (12 km S; 10°24'N, 61°02'W), bridge over Nariva River, 20-27 Jun 1993, W. N. Mathis (2♂, 5♀; USNM); Lower Manzanilla (16 km S; 10°22'N, 61°01'W), 20 Jun 1993, W. N. Mathis (9♂, 5♀; USNM). St. Patrick: Pitch Lake (10°14'N, 61°38'W), 24 Jun 1993, W. N. Mathis (2♀; USNM).

Distribution (Fig. 28). Neotropical: Belize, Costa Rica (Guanacaste, Limón, Puntarenas), Ecuador (Guayas, Manabi), Guyana, Honduras ( Cortés), Mexico (Chiapas), Panama, Trinidad and Tobago, West Indies (Barbados, Cuba, Dominica, Dominican Republic, Grand Cayman, Grenada, Haiti, Jamaica, Puerto Rico, St. Lucia, St. Vincent).

Remarks.

Although similar to Polytrichophora conciliata and Polytrichophora marinoniorum in having a row of setulae along the anteroventral surface of the forefemur and in having a small H-shaped hypandrium in ventral view, this species is distinguished from these congeners in having a shortened ventral epandrial process (Fig. 24).