Pelecorhynchus longicauda

description

Description. Female (N = 1; length = 22.0 mm). Head: eyes black, without color pattern when dry, bare. Frons with dark brown pruinosity, parallel-sided. Parafacial with gray pruinosity and short black pilosity. Ocellar triangle with three ocelli (Fig. 28). Posterior border of the head with black pruinosity and black hairs; vertex black without hairs. Clypeus convex with gray pruinosity and long abundant dark brown hairs (Fig. 28). Gena with dark gray pruinosity and long abundant black hairs continuous with those of the occiput; beard black. Scape and pedicel with dark brown pruinosity and black hairs; first flagellomere brown; apical flagellomeres the same color. Maxillary palpus dark brown with abundant, short black hairs. Proboscis and labellum brown with sparse brown hairs. Thorax: scutum black with short, sparse black hairs and two parallel longitudinal yellowish stripes. Scutellum black with long black hairs on distal margin. Pleura shining brown with long black hairs. Legs dark brown. Coxa dark brown with black hairs. Wing infuscated orange especially on costal margin. Abdomen: shining brown dorsally with sparse black hairs mostly located on the lateral margins; tergites 2, 3

Revision of the New World species of the genus Pelecorhynchus Macquart, 1850 (Diptera: Pelecorhynchidae)

diagnosis

Diagnosis and comments. Body color shining dark brown. Scutum with two parallel longitudinal yellowish stripes. Scutellum black with long black hairs on the distal margin. Pleura dark brown with long black hairs. Wing infuscated orange. Abdomen shining brown dorsally; tergites 2, 3 and 4 each with a pair of triangular whitish spots extending from the lateral margin to the center (Fig. 27). Sternites 2, 3, and 4 with a pair of oval white spots. This species has the scutellum with black hairs on the distal margin and is most similar to P. xanthopleura, but can be distinguished by the beard and pleural hairs black; it also differs from P. elegans, P. biguttatus and P. penai, which all have yellowish hairs, P. longicauda which has a black beard and black pleural hairs.

Revision of the New World species of the genus Pelecorhynchus Macquart, 1850 (Diptera: Pelecorhynchidae)

materials_examined

Material examined. Región Metropolitana: 2 ♂ Talagante 18. XI. 1964 col. M. Toro; 1 ♂ Talagante 23. XI. 1964 col. Zapata; 1 ♂ Cordillera, El Canelo without date col. M. Etcheverry; 2 ♂ Talagante 23. XI. 1964 col. Montes; 1 ♂ Malloco, Peñaflor XI. 1959 without col.; Región de O´Higgins: 1 ♂ Cardenal Caro, Pichilemu, El Cardonal 1. I. 1954 col. R. Amunategui; Región del Maule: 1 ♂ Linares without date col. Villalobos; Región de La Araucanía: 1 ♂ Malleco, Angol 7. XII. 1949 col. P. Salgado; 1 ♂ Malleco, Angol 7. XII. 1950 col. M. Fernández; 1 ♂ Malleco, Angol 2. XII. 1949 col. Salgado; 1 ♂ Angol, 2. XI. 1950 col. Balboa; 1 ♂ Malleco, Angol 8. XII. 1949 col. L. Cisternas; 1 ♂ Malleco, Angol 8. XII. 1949 col. Sheffield; 1 ♂ Malleco, Angol VIII. 1949 col. Pealli; 1 ♂ Malleco, Angol 18. XII. 1949 col. M. Guzmán; 1 ♂ Malleco, Angol 1947 col. Pealli; 1 ♂ Malleco, Angol 22. XI. 1949 col. R. Cuevas G.; 1 ♂ Malleco, Angol 8. XII. 1949 col. Sheffield; 1 ♂ Malleco, Angol 24. XI. 1949 col. E. Frinelt; 1 ♀ Malleco, Angol 2. I. 1965 col. Cerda.

Revision of the New World species of the genus Pelecorhynchus Macquart, 1850 (Diptera: Pelecorhynchidae)

materials_examined

Holotype: female, Chile (NHMUK?). Dist.: Región Metropolitana: Talagante Province (Malloco, Talagante), Cordillera Province (El Canelo); Región de O´Higgins: Cachapoal Province (Parral, according to Philippi (1865: 726), and actually named Rinconada de Parral), Cardenal Caro Province (El Cardonal, Pichilemu); Región del Maule: Talca Province (Río Claro Las Mercedes), Linares Province (Linares); Región de Ñuble: Diguillín Province (Yungay); Región de La Araucanía: Malleco Province (Angol). Refs.: Loew, 1858: 347 (com.); Costa, 1863: 38 (list); Philippi, 1865: 726 (as Coenura); Schiner, 1867: 305 (com.); Schiner, 1868: 77 (com.); Reed, 1888: 284 (cat., as Coenura); Röder, 1889: 10 (in key); Hunter, 1901: 133 (cat., as Coenura); Kertész, 1908: 148 – 149 (cat., as Coenura); Enderlein, 1922: 336 (in key); Enderlein, 1925: 262 (list, as Coenura); Gazulla & Ruiz, 1929: 292 (com.); Ruíz, 1929: 237 (com.); Kröber, 1930 a: 153 (as Coenura); Kröber, 1930 b: 114 (in key as Coenura); Borgmeier, 1933: 289 (as Coenura); Kröber, 1934: 232 (cat., as Coenura); Mackerras & Fuller, 1942: 71 (in key), 72 (male terminalia, com.), pl. I fig. 2 (adult; this plate is after p. 108 in the respective volume);

A catalog of Pelecorhynchidae (Diptera: Tabanomorpha) from Chile