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

Relictanum magisadspersum Miranda sp. nov.

Map 1. Figure 46 .

Type locality. Venezuela, Carabobo, Henri Pittier National Park, Portachuelo Pass, 1143m, 10°20'51''N 67°41'16''W. Holotype male 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 ♂, CNC Diptera 161222).

Comments. Very similar to R. adspersitum but immediately distinguished by the 6-spotted 3rd 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.

Figures

FIGURE 46. Relictanum magisadspersum sp. nov., holotype. a. Habitus, dorsal. b. Abdomen, dorsal. c – f. Male genitalia: c. Surstylus, ventral. d. Suepandrial sclerite, ventral. e. Hypandrium, lateral. f. Hypandrium, ventral.