Diptera: Calliphoridae: Mesembrinellinae) from Colombia
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Revista120 Colombiana de Entomología 39 (1): 120-124 (2013) A new species of Mesembrinella (Diptera: Calliphoridae: Mesembrinellinae) from Colombia Nueva especie de Mesembrinella (Diptera: Calliphoridae: Mesembrinellinae) para Colombia Marta WOLFF1 Abstract: Mesembrinella is a Neotropical genus with only three species reported for Colombia: M. apollinaris, M. bi- color y M. umbrosa. This paper describes a new species of the genus; Mesembrinella patriciae sp. nov. which is found in the departments of Antioquia, Caldas, Norte de Santander, Quindío, Risaralda and Santander (Central and Eastern Andean mountain range) between 1,900-2,800 masl. Identification key of the species ofMesembrinella and des cription of the male and female of the new species are provided along with illustrations of the terminalia. Key words: Andean biodiversity. Neotropical Region. Taxonomy. Resumen: Mesembrinella es un género neotropical con sólo tres especies reportadas para Colombia: M. apollinaris, M. bicolor y M. umbrosa. En este trabajo se describe una nueva especie del género; Mesembrinella patriciae sp. nov. que se encuentra en los departamentos de Antioquia, Caldas, Norte de Santander, Quindío, Risaralda y Santander (Cordillera Andina Central y Oriental) entre 1.900 a 2.800 msnm. Se presenta la clave para la identificación deMesembrinella, y la descripción del macho y la hembra de la nueva especie, con ilustraciones de la terminalia. Palabras clave: Biodiversidad andina. Región Neotropical. Taxonomía. Introduction The type material of the new species is deposited in the Colección de Entomología de la Universidad de Antioquia Mesembrinella Giglio-Tos, 1893 is one of the nine genera of (CEUA), Medellín, and Instituto de Investigación de Recur- Mesembrinellinae Shannon, 1926, a Calliphoridae subfamily sos Biológicos Alexander von Humboldt (IAvH), Villa de restricted to the Neotropical Region (Mello 1967; Toma and Leyva. Carvalho 1995). The species of Mesembrinella are found in The morphological description used to diagnose and des- areas with undisturbed native vegetation, and are considered cribe the male of the new species follows McAlpine (1981). to be asynanthropic (Nourteva 1963), associated with decom- Body length was recorded from the front to the apex of the posed animal and vegetable matter. There are 13 species de- abdomen, and the wing length was taken from the alar scler- scribed for this genus (Guimarães 1977), distributed from the ite to the wing apex. To study the male genitalia, the abdo- south of Mexico to the north of Argentina (Peris and Mariluis men was submerged in 10% potassium hydroxide (KOH) at 1984). Only three species of Mesembrinella have been re- room temperature for 24 hours, rinsed in acetic acid for 10 ported for Colombia: M. apollinaris Seguy, 1925 fromVil- minutes, followed by distilled water for 10 minutes, and fi- lavicencio, Department of Meta; M. bicolor (Fabricius, 1805) nally placed in ethanol 70% with glycerin (9:1) until dissec- and M. umbrosa (Aldrich, 1922) (Pape et al. 2004), from tion of genitalia. “Aguacatal River” Guimarães (1977), probably referring to For description and illustration purposes, the genitalia the Department of Valle del Cauca. were dissected using an Olympus® SZ60 microscope. The Male and female of Mesembrinella patriciae sp. nov. are photos were taken using a Leica® M205c stereomicroscope. described based on specimens collected in the Cordillera All the dissected structures were preserved in 200 µL plas- Central and Cordillera Oriental (Central and Easter Andean tic tubes with glycerin; any remaining parts of the specimen mountain range). A key to identification the species of the were mounted using insect pins. genus Mesembrinella and illustrations of male genitalia of the new species and of M. bicolor (species closely related) Taxonomy are shown. Mesembrinella Giglio-Tos, 1893: 4. Type species, Musca quadrilineata Fabricius,1805 original description; misidenti- Material and methods fication = Mesembrinella (Mesembolia) bellardiana Aldrich, 1922; Giglio-Tos 1895: 11; Wulp 1826: 300; Hough 1899: Material examined is deposited in the Laboratorio de Colec- 64; Aldrich 1905: 518; 1922:10; 1925: 22,12; Surcouf 1919: ciones Entomológicas de la Universidad de Antioquia, Co- 72; Shannon 1926: 120; Hall 1948: 64; Mello 1967: 47; lombia (CEUA). The specimens were collected in Antioquia, James 1970: 3; Guimarães 1977: 16; Peris and Mariluis 1984: Caldas, Quindío and Risaralda (Central Andean mountain 253; Mariluis 1987: 107; Maes et al. 1994: 16; Toma and range), Norte de Santander and Santander (Eastern Andean Carvalho 1995: 136; Vargas and Wood 2010: 1299; Marinho mountain range), between 1,900 and 2,800 masl. et al. 2012: 842. 1 Ph. D. Profesora Titular. Instituto de Biología, Grupo de Entomología (GEUA), Universidad de Antioquia, Medellín, Colombia. [email protected]. edu.co. Mesembrinella a new species from Colombia 121 Diagnosis over all tergites, T4 and T5 with oblique bans .................... 14 Mesembrinella (according to Guimarães 1977) differs from 13’. Femur dark (chestnut – red-chestnut ), with the apical ¼ the other genus of Mesembrinellinae in the following combi- pale (yellow); abdomen with tomentum only at the T1+2 and nation of characters: humeral callus with three setae; post hu- T3 ........................................................M. brunnipes Surcouf merals present; two or three katepisternal setae and remigium 14. Male with a pair of reclinate orbitals setae in front ocel- from ciliate to bare. lus…...............................................................M. abaca (Hall) 14’. Male without reclinate orbitals setae…………………… Monophyly. According to Toma and Carvalho (1995), there .........................................................M. townsendi Guimarães has not yet been any reported character that supports mono- phyly of this genus. Mesembrinella patriciae sp. nov. (Figs. 1, 2A-G) Key to species of Mesembrinella Diagnosis. Medium to large flies; male holoptic; lower ca- (Adapted from Guimarães 1977) lypter narrow, rounded posteriorly, with anteromedian angle distinctly lateral to base of scutellum, not directed towards 1. Basal section of stein vein (remigium) ciliate dorsally .... 2 the scutellum; subcostal sclerite and basal section of stein 1’. Basal section of stein vein (remigium) bare dorsally ..... 3 vein bare (remigium); apical tip of paraphallus with denticles. 2. Subcostal sclerite ciliate.................M. bellardiana Aldrich 2’. Subcostal sclerite bare......................M. peregrina Aldrich Description male. Head: holoptic, frontal vitta obliterated, 3. Supra-alar setae 3 or 4; abdomen densely with tomentum chestnut color, widened when reaching the lunule, in the and with clothing setulae arising from a small shining spot ... more slender portion with approximately 1/2 diameter of .....................................................................M. batesi Aldrich the anterior ocelli; parafrontal and parafacialia yellow with 3’. Supra-alar setae 3; abdomen densely with tomentum and silver tomentum and bare; gena yellow with silver tomen- without clothing setulae arising from a small shining spot. 4 tum, postgena and occiput white tomentum, with thin and 4. Subcostal sclerite bare ...................................................... 5 long hairs; face and clypeal membrane pale; ocellar triangle 4’. Subcostal sclerite ciliate ................................................. 8 chestnut; scape, pedicel, flagellomere and palp orange in col- 5. Mesonotum blak ............................................................... 6 or. Chaetotaxy: ocellar setae 2 pair parallel and proclinate; 5’. Mesonotum reddish brown to orange yellow ................. 7 postocellar setae 1 pair parallel; outer vertical setae 1 pair 6. Two post-alar setae; postpronotal lobe yellow ................ ... parallel; inner vertical setae 1 pair crossed; para-vertical 1 ...............................................................M. flavicrura Aldrich pair convergent; post-ocular seta black homogeneously dis- 6´. Three post-alar setae; postpronotal lobe black .............. ... tributed up to the gena; inter-frontal and orbital proclinate ..........................................................M. xanthorrhina (Bigot) absent; facial carina slightly prominent with few short black 7. Wings with internal margin of the inferior calypter truncat- setulae at base, above vibrissae; vibrissae crossed; subvibris- ed, projecting towards the scutellum; superior calypter slight- sae approximately ½ length of vibrissae. Thorax: Mesonotum ly infuscate around it (Figs. 2H-N)......M. bicolor (Fabricius) red chestnut, with white tomentum and defined longitudinal 7’. Wings with internal margin not truncated, not projecting testaceous bands; pleura and humeral callus orange with fine towards the scutellum; both calypteres with margin infuscate white tomentum; anterior and posterior spiracles pale yel- ................................................................M. patriciae sp. nov. low; legs with coxae, trochantes and femora orange, mid 8. Acrostichal setae 1:1.........................M. semihyalina Mello and posterior femora with apexes dark chestnut; mid femur 8’. Acrostichal setae different (2:1, 2:2, 2:3) ....................... 9 with three apical posterodorsal setae and one antero-medial 9. Big species (body length 13mm o more); wings with dis- setae. Chaetotaxy: postpronotal lobe 3; post-postpronotal 1; tance between veins R4 + 5 and M more than half the dis- tance between