Baeocera colibri, Groll, 2025

Baeocera colibri sp. nov.

urn:lsid:zoobank.org:act:9216244A-A10C-4B93-8894-7148CF8DC7EE

Figs 1A–D, G View Fig , 34–38 View Fig View Fig View Fig View Fig View Fig

Diagnosis

Body length: 1.08–1.22 mm; oblong. Dark brown. Mesepimeron approximately 0.65 the width of the mesanepisternum, and 2.75 × as wide as long. Submesocoxal lines strongly arcuate, punctate. Basal striae connected to sutural and reaching approximately the outer ⅔ of the basal width. Propygidium dense and coarsely punctate. Aedeagus with parameres strongly sinuous, constricted posteriorly; sclerites twisted, hummingbird-shaped. Tergite VIII in females lacking posterior projection. Distal gonocoxite robust.

Etymology

The species epithet is a Spanish noun in apposition, meaning ‘hummingbird’, alluding to the hummingbirdlike male sclerite of the internal sac.

Material examined

Holotype

BRAZIL • ♂; Minas Gerais, Viçosa, EPTEA Mata do Paraíso ; 12 Nov. 2019; LabCol leg.; “Fungo 06 / Fotos: 0751-0753 / Em Ceratiomyxia fruticulosa / HOLOTYPUS ♂ ”; CELC. ( Fig. 34D–E View Fig )

Paratypes

BRAZIL • 2 ♂♂, 3 ♀♀ (1 ♂ **, 1 ♀ *, 1 ♀ **); same collection data as for holotype; CELC • 1 ♀ *; same collection data as for holotype; “Fungo 31 / Em Xylodon flaviporus ”; CELC • 4 ♂♂ (1 ♂ *), 1 ♀ *, 2 ex.; same collection data as for holotype; “Fungo 10 / Em Ceratiomyxia fruticulosa ”; CELC • 1 ♂ *, 1 ♀, 1 ex.; same collection data as for holotype; 14 Nov. 2019; LabCol leg.; “Fungo 34 / Fotos: 0783-0790; Em Ceratiomyxa fruticulosa ”; CELC • 1 ♂ *, 1 ♀ *; same collection data as for holotype; 24 Mar. 2022; E. von Groll et al. leg.; “Falcon 20 / Em Ceratiomyxia fruticulosa em Pinus ”; CELC .

Description

COLOURATION. Dark brown, with reddish nuances, angle dependent; clypeus, coxae, tip of elytra, and anterior part of femora ochreous; antennomeres I–VI, mouthparts, tibiae, apex of each ventral ventrite, and tarsi yellow ( Figs 34A–C, F–G View Fig , 38A–C View Fig ). Variations: sclerites from light to dark brown.

HEAD ( Fig. 34F–N View Fig ). Frons with punctation sparse, some coarser than other ( Fig. 34F–G View Fig ). Labrum straight posteriorly ( Fig. 34J View Fig ). Mandibles with tooth not distinctly elongate ( Fig. 34K–L View Fig ). Maxillary palpomere III somewhat oblong, IV thick ( Fig. 34M View Fig ). Labial palpomere II elongate; IV thin and curved; mentum concave posteriorly ( Fig. 34N View Fig ). Antennomeres VII and XI elongate ( Fig. 34H–I View Fig ); antennomere proportions (n =6): I 74/30:II 57/27: III 31/14: IV 37/14:V 42/14:VI 39/16:VII 43/22:VIII 45/24: IX 71/36: X 73/38: XI 106/39.

PROTHORAX ( Fig. 35A–E View Fig ). Punctation sparse and fine; pubescence sparse and short. Hypomeron subglabrous, impunctate ( Figs 34B View Fig , 38B View Fig ). Prosternal process distinctly elongate and spinose in lateral view ( Fig. 35C View Fig ). Profurca short and thick ( Fig. 35E View Fig ).

MESOTHORAX ( Fig. 35F–J View Fig ). Scutellum visible in dorsal view, wider than long; tip rounded ( Fig. 35A View Fig ). Mesoventral lines curved; median lines short, straight, and open ( Fig. 35G View Fig ). Mesepimeron 2.75 × as wide as long and about 0.65 × the width of the mesanepisternum ( Fig. 35G–J View Fig ). Mesoventral process with a small posterior ridge ( Fig. 35H View Fig ).

METATHORAX ( Fig. 35G–N View Fig ). Metaventrite smooth, shining, pubescence moderately sparse laterally ( Fig. 35I–J View Fig ). Submesocoxal lines strongly arcuate, punctate; submesocoxal area length: 0.04–0.07 mm ( Fig. 35G–J View Fig ). Metanepisternal suture dashed, with variable curvature ( Fig. 35I–J View Fig ). Metanotum with alacrista trapezoidal-shaped; scutoscutellar suture short, and not trespassing apodeme ( Fig. 35K–L View Fig ). Stalk of metendosternite slightly narrower than arms ( Fig. 35M–N View Fig ).

WINGS ( Figs 34A View Fig , 36A–B View Fig , 38A View Fig ). Elytra dense and coarsely punctured. Basal striae connected to sutural, impunctate, and reaching approximately the outer ⅔ of the basal width ( Fig. 35A View Fig ). Lateral striae fine, impunctate, and curved near humeral region ( Fig. 34B View Fig ).

LEGS. Thin, elongate, not microsculptured ( Figs 36D–I View Fig , 38D–I View Fig ).

ABDOMEN. Submetacoxal lines with coarse punctures ( Fig. 35I–J View Fig ). Ventral surface shining; pubescence dense; punctures fine ( Fig. 35I–J View Fig ). Propygidium dense and coarsely punctate; micropunctured; pubescence dense ( Figs 36J View Fig , 38J View Fig ).

Males

Pro- and mesotarsomeres I–III widened, bearing tenent setae ( Fig. 36G–I View Fig ). Sternite VIII with an elongate posterior projection ( Fig. 36K View Fig ). Tergite VIII triangular with a smooth and wide posterior projection ( Fig. 36L View Fig ). Tergite IX with curved ventral struts. Sternite IX constricted centrally ( Fig. 36M View Fig ). Tergite X triangular, wide ( Fig. 36M View Fig ).

AEDEAGUS ( Fig. 37A–N View Fig ). Median lobe with basal bulb larger than apical lobe; apical lobe bent and moderately sclerotized. Parameres distinctly sclerotized and sinuous in frontal view; with a constriction near apex ( Fig. 37B View Fig ). Internal sac formed by a twisted sclerite that forms a short and curved main structure; terminal part of flagellum extending obliquely from main part, that resembles a hummingbird ( Fig. 37E–G, J, N View Fig ).

MEASUREMENTS (n= 9, including holotype, unless otherwise specified; in mm). TL 1.08–1.22 (1.18± 0.04), SY (n=8) 0.08–0.12 (0.11 ±0.01), HW (n=8) 0.30–0.35 (0.33 ± 0.02), IS (n=8) 0.15–0.18 (0.17 ±0.01), WA (n = 8) 0.06–0.10 (0.08 ± 0.01), PL 0.43–0.51 (0.47± 0.03), PA 0.33–0.39 (0.35 ±0.02), PB 0.64– 0.72 (0.68± 0.03), SL 0.02–0.03 (0.02± 0), SW (n=8) 0.04–0.05 (0.04 ± 0), EI 0.68–0.78 (0.75± 0.03), EL 0.74–0.85 (0.82± 0.03), EW 0.34–0.40 (0.37 ± 0.02), EH 0.33–0.38 (0.36 ±0.02), MsW 0.15–0.18 (0.17± 0.01), MeL 0.04–0.05 (0.04± 0), MeW 0.11–0.15 (0.13 ± 0.01), MB 0.09–0.12 (0.10 ± 0.01), MC 0.25–0.30 (0.28± 0.02), ML 0.05–0.07 (0.06± 0.01), VL 0.13–0.18 (0.15 ± 0.01), PrF 0.29–0.34 (0.31 ± 0.02), PrT 0.20–0.29 (0.24± 0.03), MsF (n=8) 0.32–0.37 (0.35± 0.01), MsT 0.28–0.32 (0.30 ± 0.02), MtF 0.35–0.41 (0.39 ±0.02), MtT 0.32–0.37 (0.35 ±0.02).

Females ( Fig. 38 View Fig )

Ventrite VIII with a triangular posterior projection ( Fig. 38K View Fig ). Tergite VIII triangular, lacking a posterior projection ( Fig. 38L View Fig ). Bursa copulatrix with small sclerites ( Fig. 38N View Fig ). Spermatheca filiform ( Fig. 38M View Fig ). Distal gonocoxite triangular, robust; gonostylus elongate ( Fig. 38M–N View Fig ).

MEASUREMENTS (n= 9, unless otherwise specified in mm). TL 1.11–1.25 (1.20± 0.04), SY 0.10–0.12 (0.11 ±0.01), HW 0.32–0.36 (0.34 ± 0.01), IS 0.16–0.19 (0.17 ± 0.01), WA 0.07–0.10 (0.08 ±0.01), PL 0.43–0.51 (0.48±0.03), PA 0.35–0.38 (0.36 ± 0.01), PB 0.64–0.76 (0.70 ± 0.04), SL (n =7) 0.02–0.03 (0.02 ± 0), SW (n =8) 0.03–0.06 (0.04 ± 0.01), EI 0.73–0.80 (0.76 ± 0.03), EL 0.78–0.88 (0.84 ± 0.03), EW (n=8) 0.34–0.42 (0.38± 0.03), EH (n =8) 0.34–0.42 (0.37 ± 0.03), MsW 0.14–0.20 (0.17 ± 0.02), MeL 0.04–0.05 (0.04 ± 0), MeW (n =8) 0.10–0.15 (0.13 ± 0.02), MB 0.09–0.14 (0.11 ±0.02), MC 0.24–0.32 (0.28± 0.03), ML 0.04–0.06 (0.05 ± 0.01), VL 0.12–0.17 (0.15 ± 0.02), PrF (n =8) 0.26–0.32 (0.3 ± 0.02), PrT 0.20–0.25 (0.23 ± 0.02), MsF 0.32–0.36 (0.34 ± 0.01), MsT 0.27–0.30 (0.29± 0.01), MtF (n =8) 0.35–0.41 (0.38± 0.02), MtT 0.31–0.36 (0.35± 0.02).

Host

Collected from Ceratiomyxa fruticulosa on a fallen Pinus sp. , Xylodon flaviporus (Berk. & M.A.Curtis ex Cooke) Riebesehl & Langer ( Schizoporaceae ), and from unknown fungi on logs ( Fig. 1G View Fig ).

Remarks

Similar to B. pulga sp. nov. and B. bottine sp. nov. Differs by the more robust body, the coarser and denser elytral punctures, and by the shape of the antennomeres. The male terminalia can be distinguished by the strongly sinuous parameres, which bear a distinct posterior constriction. Females are distinguished by tergite IX lacking a posterior projection, and by the less elongate distal gonocoxite.

Distribution

Mata do Paraíso and Mata da Biologia, Universidade Federal de Viçosa, campus of Viçosa, state of Minas Gerais, Southeast Brazil ( Fig. 1A–D View Fig ).