Relictanum magisadspersum

Miranda, Gil Felipe Gonçalves, Marshall, Stephen A. & Skevington, Jeffrey H., 2014, Revision of the genus Pelecinobaccha Shannon, description of Relictanum gen. nov., and redescription of Atylobaccha flukiella (Curran, 1941) (Diptera: Syrphidae), Zootaxa 3819 (1), pp. 1-154: 94

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Relictanum magisadspersum


Relictanum magisadspersum  Miranda sp. nov.

Map 1. Figure 46 View Figure .

Type locality. Venezuela, Carabobo, Henri Pittier National Park, Portachuelo Pass, 1143m, 10 ° 20 ' 51 ''N 67 ° 41 ' 16 ''W. Holotype male CNCAbout CNC.

Male. Similar to R. adspersitum  except: Face entirely black. Occiput pollen differently oriented dorsally. Scutum brown pollen at most concentrated as a pair of sub-medial vittae barely visible from a posterior angle; scutum mainly black pilose, except with some white pile on notopleuron but always black pilose anterior to transverse suture. Scutellum pile black, subscutellar fringe pile black. Pleuron sometimes with a few black pile dorsally on posterior ½ of posterior anepisternum. Wing entirely infuscated; only basal ⅓ of mesotibia and base of metatibia pale. Third abdominal tergite trapezoidal, slightly longer than basal width and with 6 white spots, one median pair sub-basally, another basal pair sub-laterally and a central pair. Genitalia: Cercus with 1 row of pile on medial margin and 2 irregular rows on lateral margin. Surstylus sub-quadrate with slightly extended apical corner on lateral view, with long setulae (around 16) ventrally on apical ⅔, with very few pile (around 5) on basal ½ of the dorsal surface. Subepandrial sclerite rectangular and wide, with baso-lateral corners slightly extended. Hypandrium with trapezoidal notch extending to anterior ½, notch posterior margin straight, with a few pile (around 3) subapically on ventro-lateral surface. Distiphallus short and with anterior surface almost straight. Postgonite narrow, with few pile on ventral ⅓, ventral surface twice undulated, dorsal surface slightly concave; postgonite apex rounded with subapical lateral spine.

Female: Female unknown.

Length. ~ 6mm; wing ~ 5mm.

Distribution. Costa Rica (Puntarenas), Venezuela (Carabobo).

Type- material. Holotype: Male in good condition. Holotype labels: ‘ VENEZUELA: CARABOBO: // Henri Pitier National // Park, Portachuelo Pass, // 15.ix. 2008; // 10 ° 20 ' 51 ''N, 67 ° 41 ' 16 ''W // J.Skevington; 1143 m’ ‘J.Skevington // Specimen # // 25218 ’ ‘ Holotype // Relictanum  // magisadspersum  // G.F.G. Miranda’ [red label].

Paratypes. COSTA RICA. Puntarenas, Z. P. Las Tablas, Las Alturas de Cotón, 1500–1600m, libre, L_S_ 323200 _ 589750, #74936, 27 Sep 2003, M. Alfaro (1 ♂, INB0003753312 INBIOCRI COSTA RICA); ..., San Vito de Coto, Las Alturas Biol. Sta., 1500m., 16 Aug 1995, J. R. Vockeroth (1 ♂, CNCAbout CNC Diptera  161222).

Comments. Very similar to R. adspersitum  but immediately distinguished by the 6 -spotted 3 rd abdominal tergite. This species corresponds to sp 53 in the cladograms of Miranda (2011).

Etymology. The specific epithet is a reference to the increased number of spots on the abdominal tergites of this species. It is to be treated as an adjective.


Canadian National Collection of Insects, Arachnids, and Nematodes