Mberu murtiniensis Silva, Capellari & Oliveira, 2025, sp. nov.

Mberu murtiniensis sp. nov. (Figs 14, 15) Description. Male. Body length: 1.57 mm. Wing length: 1.70 mm long, 0.52 mm wide (n = 1). Similar to M. amorimi sp. nov. in both general habitus and chaetotaxy, except as noted. Head (Fig. 14B, C). Eyes touching on face; region of face anterior to antenna brown, lower surface of face and clypeus with slight silver pruinosity. Postpedicel dark yellow, triangular, pointed and pubescent; about 1.6 times longer than basal width; stylus about 2.5 times longer than postpedicel. Thorax (Fig. 14C). Brown, except for black spot below wing. 4–5 dc s, increasing in size posteriorly, posteriormost three conspicuously longer than anteriormost; one brown pprn s. Wing. R 1 ending near middle of wing; RMx ratio = 2.3, CuAx ratio = 0.2. Legs. Completely yellow, including coxae II and III. Leg I. Femur I bare of major setae; dorsal surface of tarsus I covered by white setae. Leg II. Femur II with row of small ventral setae, without major setae; without ventral excavation; tibia II without major setae at dorsal 1/2 and 3/4, but with one av, one ventral, one pv and one dorsal small black seta at apex. Leg III. Femur III without conspicuous row of dorsal setae, av row with 5–6 white setae; tibia III with one av and one ad white seta at apex; IIIt1 with row of ventral setae, with ventral excavation at base. Relative podomere ratios: I: 7.3/ 6/ 3.9/ 2.4/ 1.5/ 1/ 1; II: 7.6/ 7.3/ 4.5/ 2.6/ 1.7/ 1/ 1; III: 7/ 7.9/ 2.6/ 3.1/ 1.7/?/?. Abdomen. As in M. amorimi sp. nov. Hypopygium (Fig. 15). Epandrium elongate, twice longer than high, dark. MEp narrow, branched, without setae at apex (Fig. 15C, G). DSur and VSur covering internal appendages (Fig. 15A, B); VSur (Fig. 15C) enlarged, twice higher than DSur, with one internal seta at apex, probably being LEp fused with VSur (see Quevedo et al. 2025); DSur (Fig. 15D) with proximal and distal widths subequal, dorsal margin slightly concave, twice wider than height, with ventral projection near apex. Hypandrium basally fused to epandrium. Phallus (lost during dissection) straight, without apical projection. Cercus (Fig. 15F) divided in two parts, ventral part curved and stout, with 3–4 spines ventrally, dorsal part rounded and covered by fine setae, with one short seta apically. Female. Unknown. Type material. HOLOTYPE ♂, “SISBIOTA - | CNPQ/FAPESP [Vertical line] | BRAZIL, MS [Mato Grosso do Sul], Porto Murtinho | Faz. Retiro Conceição - Trilha | da Espinhadeira | S21°40′59.7″ W57°46′42.5″ | Malaise 31 | 18.iv-15.v.2012 | Lamas, Nihei & eq. Col.”; “HOLOTYPE | Mberu murtiniensis | Silva, Capellari & Oliveira [red label]” (MZUSP). Holotype in good condition, genitalia dissected and stored in microvial with glycerin, pinned beneath the specimen. Etymology. Toponymic, referring to the type-locality. Remarks. Mberu murtiniensis sp. nov. is similar to M. takwajasu sp. nov., and both share the eyes touching on face (Figs 14B, 20B) and MEp branched (Figs 14G, 21H). Mberu murtiniensis sp. nov. is distinguished by its reduced body length (about 1.60 mm), postpedicel about 1.6 times longer than its basal width (Fig. 14C), DSur slight concave dorsally (Fig. 15D), and hypopygium not elongated, reaching forward abdominal segment 4 (Fig. 15A). In M. takwajasu sp. nov., the body length is longer than 2 mm, postpedicel about 2.3 times longer than its basal width (Fig. 20C), DSur subtriangular (Fig. 21D) and hypopygium elongated, reaching abdominal segment 2 (Fig. 21A). Distribution (Fig. 24). Brazil: state of Mato Grosso do Sul (Chaco biome). Comments. Mberu murtiniensis sp. nov. is one of the morphospecies collected in Mato Grosso do Sul (Brazil) during SISBIOTA-Diptera Brazilian Network (see Lamas et al. 2023).