Relictanum shropshirei ( Curran, 1930 ) Curran, 1930

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 : 98

Relictanum shropshirei ( Curran, 1930) comb. nov.

Map 1. Figure 45 (f–h).

Baccha shropshirei Curran, 1930 .— Curran, 1930: 7. Type locality: Panama, Canal Zone. Holotype female AMNH. Hull, 1949a: 241 (fig. 231, abdomen), 283 (fig. 386, wing)

Ocyptamus shropshirei . Thompson et al., 1976: 27 (catalog citation).

Male. Male unknown.

Female: As in R. braziliensis but wing entirely microtrichose and dark on basal ½ (dark on cells bc, c, sc, r, bm, cu p, most of anal lobe, most of cua1, basal ½ of r1, basal ¼ of r2+3, base of r4+5 and basal ⅓ of dm). The female 7th sternite is distinctly sclerotized, the 8th tergite is narrower, and the 10th tergite is narrow, strongly convex posteriorly and with fewer setulae.

Length. 6.5–7mm; wing 5–5.5mm.

Distribution. Mexico (Veracruz), Panama (Canal Zone), Venezuela (Zulia).

Material examined. MEXICO. Veracruz, Acayucan, Frank M. Hull Collection C.N.C. 1981, 23 Oct 1957, R. & K. Dreisbach (1 ♀, CNC Diptera 161210). PANAMA. Canal Zone, Corozal, Type Baccha shropshirei Curran [red label], 16 Jan 1929, C. H. Curran (1 ♀, holotype Baccha shropshirei , AMNH). VENEZUELA. Zulia, El Tucuco (45 km SW of Machiques), 5–6 Jun 1976, A. S. Menke & D. Vincent (1 ♀, USNM ENT 00257662); ..., Los Angeles del Tucuco, 15–16 Apr 1981, A. S. Menke & L. Hollenberg (1 ♀, USNM ENT 00257665).

Comments. The wing differences between the types of B. braziliensis and B. shropshirei were noted by Reemer (2010) as well, where he stated on page 186 that “These specimens were compared with the holotype of B. braziliensis [...] However the following differences were noted (in parentheses the character state in the Mapane specimens): wing with bare areas on cells r, bm and cu p (entirely microtrichose), wing with vague yellowish anteromedial blotch (infuscated on basal half), pterostigma clearly darker than 2nd costal cell (pterostigma and 2nd costal cell of same yellowish brown colour). [...] they are identified as O. shropshirei , with which they agree quite well”.

Figures

FIGURE 45. a – e. Relictanum johnsoni (Curran, 1934), female: a – b. Head: a. Lateral. b. Dorsal. c – d. Genitalia: c. Dorsal. d. Lateral. e. Holotype, habitus, dorsal. f – h. Relictanum shropshirei (Curran, 1930), female: f – g. Genitalia: f. Lateral. g. Dorsal. h. Holotype, habitus, dorsal. 8 tg: 8 th tergite, 10 tg: 10 th tergite, cerc: cercus.