Centistidea breviantennalis, Liu & Polaszek, 2025

Liu, Zhen & Polaszek, Andrew, 2025, The species of Centistidea Rohwer, 1914 (Hymenoptera: Braconidae: Miracinae) from Brazil, European Journal of Taxonomy 1004, pp. 190-210 : 196-198

Centistidea breviantennalis sp. nov.

urn:lsid:zoobank.org:act:BD65A330-E372-46E1-A4FD-97DD2E7B7364

Fig. 2

Diagnosis

Body length 2.2 mm, red-brown ( Fig. 2a ); eyes 1.8 × as long as temple dorsally ( Fig. 2b ); POL:OD:OOL = 1.5:1.0:3.0; penultimate flagellomeres 2.0 × as long as wide; 1 st flagellomere 1.4 × as long as 2 nd ( Fig. 2d ); mesoscutum ( Fig. 2e ) nearly polished on apical half, notauli weakly depressed at anterior ⅓; scutellar sulcus smooth; scutellar hind depressions large and oval, nearly touching each other; propodeum ( Fig. 2i ) with median longitudinal carinae reaching apical margin, several transverse carinae regularly branching from median carinae; fore wing ( Fig. 2g ) with vein 1-R1 triangular, 0.3× as long as pterostigma; T1 ( Fig. 2k ) indistinctly narrowed antero-medially; T2 hardly separate from lateral area, 0.9× as wide as median length, weakly striate laterally; T3 0.9 × as long as T2, hardly longitudinally striate; ovipositor sheath ( Fig. 2a, j ) 1.5× as long as hind basitarsus.

Etymology

The specific name ‘ breviantennalis ’ refers to its distinctly short antenna.

Type material

Holotype

BRAZIL • ♀; Nova Teutonia ; 27.1833° S, 52.3833° W; 8 Aug. 1938; F. Plaumann leg.; B.M. 1938-682; NHMUK010639581 ; NHMUK.

Paratype

BRAZIL • 1 ♂; same data as for holotype; 15 Sep. 1938; B.M. 1938-682; NHMUK010639562 ; NHMUK .

Description

Female

MEASUREMENTS. Body length 2.2 mm, fore wing length 2.4 mm ( Fig. 2a ).

HEAD. 2.0 × as wide as long dorsally, 1.3 × as wide as mesoscutum. Eyes 1.8 × as long as temple in dorsal view. Temple smooth, with dense setae, slightly and roundly constricted behind eyes in dorsal view ( Fig. 2b ). Ocelli small, distance between fore and hind ocellus 1.3× as long as minor axis of a hind ocellus, POL:OD:OOL = 1.5:1.0:3.0. Frons flat and polished. Vertex between eye and hind ocellus a little shiny and smooth with small, sparse setose punctures. Face ( Fig. 2c ) nearly smooth except small, dense setose punctures, slightly convex medially, 1.6× as wide as high. Clypeus 2.0 × as wide as median length, nearly polished except few setae laterally. Length of malar space 0.8 × as long as basal width of mandible. Antenna ( Fig. 2d ) 0.7× as long as body length, with scape, pedicel and 1 st, 2 nd, penultimate and ultimate flagellomeres 1.9, 1.5, 5.1, 3.7, 2.0 and 2.5 × as long as wide, 1 st 1.4 × as long as 2 nd, flagellomeres gradually shortening to penultimate one.

MESOSOMA. Length:width:height = 1.4:1.0:1.2. Mesoscutum ( Fig. 2e ) less shiny with sparser small punctures on anterior half, nearly polished on apical half, notauli weakly depressed at anterior ⅓. Scutellar sulcus curved, narrow and concave, not crenulate. Scutellum a little shiny, polished, hind depressions large and oval, nearly touching each other. Propodeum ( Fig. 2i ) not shiny, with median longitudinal carinae reaching apical margin, several transverse carinae regularly emitted from median carinae, elsewhere polished. Mesopleuron ( Fig. 2f ) highly polished, smooth.

LEGS. Hind femur 3.0 × as long as its widest part. Length of hind femur:tibia:basitarsus = 1.9:3.0:1.0. Hind basitarsus 0.7× as long as tarsomeres 2–5 combined ( Fig. 2h ).

WINGS. Fore wing ( Fig. 2g ): pterostigma relatively large, 2.9 × as long as its widest part, vein 1-R1 triangular, 0.3 of pterostigma length; vein r indistinct, r:2-SR:2-M = 1.0:8.7:2.2, 1-SR:1-M = 1.0:3.1, 1-CU1:2-CU1 =1.0:1.5; first discal cell of fore wing 1.3 × as wide as high. Hind wing ( Fig. 2h ): vein M+CU:1-M:r-m = 2.0:2.1:1.0.

METASOMA. Indistinctly (1.1 ×) longer than mesosoma. T1 ( Fig. 2k ) smooth, weakly sclerotized, indistinctly narrowed antero-medially, spoon-shaped (strongly attenuated to apex at apical third) apically, 2.3× as long as its subapical maximum width. T2 weakly sclerotized, 0.9 × as wide as median length, weakly striate laterally. T3 0.9× as long as T2, hardly longitudinally striate. Hypopygium not reaching apex of metasoma. Ovipositor sheath ( Fig. 2a, j ) relatively long, 1.5× as long as hind basitarsus, with setae denser apically.

COLOR. Red-brown ( Fig. 2a ), except lateral parts of mesoscutum and scutellum and T3–T6 darker to black-brown. Eyes with green metallic reflection. Palpi and spurs yellow-brown. Antenna dark to black-brown. Legs all orange except tarsi yellow-brown. Wing membrane hyaline, pterostigma dark brown with pale opaque apex, veins C+SC+R, 2-SR, 1-SR, 1-M, M+CU, 1-CU1 and 2-CU2 darker brown, other veins yellow-brown.

Male

Similar to female except body slimmer with longer antenna, penultimate flagellomere nearly 3 × as long as wide and T3 weakly longitudinally striate.

Host

Unknown.

Distribution

Brazil.

Remarks

This species is similar to C. carinatus ( Papp, 2013) having the propodeum finely rugulose with some transverse carinae along median longitudinal carina but differs in the following characters: antenna distinctly shorter (0.7×) than body length (somewhat longer than body length in C. carinatus ); ovipositor sheath 1.5 × as long as hind basitarsus (somewhat shorter than hind basitarsus in C. carinatus ); and T2 weakly sclerotized (T2 strongly sclerotized, obvious linear-shaped anteriorly in C. carinatus ).

Figures

Fig. 2. Centistidea breviantennalis sp. nov., ♀, holotype (NHMUK010639581). a. Habitus, lateral view. b. Head, dorsal view. c. Head, frontal view. d. Antenna. e. Mesoscutum and scutellum, dorsal view. f. Mesopleuron. g. Fore wing. h. Hind wing and hind leg. i. Propodeum. j. Ovipositor sheath. k. Metasoma, dorsal view.