Dasyrhicnoessa insularis (Aldrich)

Mathis, Wayne N. & Marinoni, Luciane, 2012, A conspectus on the Canacidae (Diptera) of Brazil, ZooKeys 162, pp. 59-92 : 77-78

Dasyrhicnoessa insularis (Aldrich) Figs 12-14

Tethina insularis Aldrich 1931: 395 [(United States) Wake Island; HT ♀, USNM (41629)].

Rhicnoessa insularis . Hendel 1934: 44 [key], 48 [generic combination, citation].

Dasyrhicnoessa insularis . Hardy and Delfinado 1980: 371-373 [generic combination, citation, figs. of head, wing, ♂ and ♀ terminalia, Oahu, Maui, Hawaii, Frigate Shoal, Pearl and Hermes Reef, Canton Island, and Palmyra Island]. Mathis and Munari 1996: 12 [world catalog]. Munari and Mathis 2010: 44-45 [world catalog].

Tethina lasiophthalma Malloch 1933: 17 [Marquesas. Hivaoa: Tahauku; HT ♂, BPBM]. Munari 1988: 48 [synonymy with Rhicnoessa ferruginea Lamb].

Dasyrhicnoessa lasiophthalma . Sasakawa 1974: 2 [generic combination]. Steyskal and Sasakawa 1977: 394 [Oriental catalog]. Foster and Mathis 1998: 606-608 [revision, Caribbean and Gulf of Mexico, figs. of ♂ terminalia]. Munari and Evenhuis 2000: 145 [synonymy].

Dasyrhicnoessa ferruginea of authors, not Lamb 1914 [misidentification]. Woodley and Hilburn 1994: 53 [citation, Bermuda]. Munari and Evenhuis 2000: 145 [citation].

Dasyrhicnoessa freidbergi Munari 1994: 20 [Cameroon. Kribi (beach, Rt. N7); HT ♂, TAU]. Mathis and Munari 1996: 12 [world catalog]. Munari and Evenhuis 2000: 145 [synonymy].

Diagnosis.

This species is distinguished from congeners by the following combination of characters: Head (Fig. 12). Thorax: dark orangish brown; acrostichal setulae in 6 rows; legs yellow; forefemur bearing comb of closely set, peglike setae along distal half of anteroventral surface; midfemur bearing ctenidial comb of setae on distal half of posteroventral surface. Abdomen: Male terminalia (Figs 13-14): length of anterior surstylar-like lobe equal to or slightly shorter than surstylus; anterior surstylar-like lobe somewhat kidney shaped; surstylus bearing normal to slightly developed setae, none thickly developed.

Specimens examined from Brazil.

PARANÁ. Antonina (25°28.4'S, 48°40.9'W; beach/mangal), 3 Feb– 9 Apr 2010, D. and W. N. Mathis (16♂; DZUP, USNM); Matinhos (N.; 25°46.4'S, 48°30.8'W; 1 m; beach/estuary), 9 Apr 2010, D. and W. N. Mathis (3♂; DZUP, USNM); Paranaguá (Rio Itiberê; 25°31.4'S, 48°30.3'W; 3 m), 23 Jan 2010, D. and W. N. Mathis (5♂, 1♀; DZUP, USNM).

SÃO PAULO. Ubatuba, Praia do Estaleiro (23°20.5'S, 44°53'W; beach), 30 Mar 2010, D. and W. N. Mathis (1♂; USNM).

Distribution.

Afrotropical: Cameroon, Madagascar, Nigeria. Australasian/Oceanian: American Samoa (Tutuila), Australia (Queensland), Bismark (Dyaul), Canton Island, Caroline Islands (Ponhpei, Chuuk, Yap, Palau), Fiji Islands (Ovalau, Suva, Viti Levu),?French Polynesia (Society Islands: Moorea), Hawaii (French Frigate Shoals, Hawaii, Hilo, Lisiansky, Maui, Midway Atoll, Molokai, Oahu, Pearl and Hermes Reef), Kiribati (Butaritari, Makin, Eita, Tarawa, Abemama), Line Islands (Christmas), Mariana Islands (Saipan, Tinian), Marquesas (Hivaoa, Nuku Hiva), Marshall Islands (Majuro, Japtan, Parry, Lib, Jibu, Jaluit, Namorik), Hebrides (Erromanga), Palmyra Island, Pitcairn Island, Rapa Island, Society Islands (Bora Bora), Wake Island. Nearctic: Bermuda, United States (Florida). Neotropical: Bahamas (South Bimini), Belize, Brazil ( Ceará, Paraná, São Paulo), Mexico (Tabasco), West Indies (Cuba, Dominica, St. Kitts, St. Lucia, St. Vincent).

Remarks.

This species was known previously only from the Indo-Pacific area, and its occurrence in the Caribbean, Gulf of Mexico, Bermuda, and now in Brazil represents a significant range extension.