Trieces broadi, Melo, Ivy Frizo De, Araújo, Carolina Rodrigues & Penteado-Dias, Angélica Maria, 2015

Melo, Ivy Frizo De, Araújo, Carolina Rodrigues & Penteado-Dias, Angélica Maria, 2015, New species of Exochus Gravenhorst and Trieces Townes (Hymenoptera, Ichneumonidae, Metopiinae) and first record of seven species from Brazil, Zootaxa 4059 (1) : -

Trieces broadi , sp. n. Melo & Penteado-Dias

( Figs. 14–19 )

Description. Female ( Fig. 14 ): Body length 5.5–6.0 mm. Fore wing length 3.5–4.0 mm; head in profile with lower face weakly swollen so antennae are inserted subvertically, region behind ocelli steeply declivous, but not concave; lower face in anterior view transverse, about 1.1 x as high as wide (from clypeal margin to level of antennal insertion), very finely punctate over entire surface; maxillary palp 5-segmented, the palpomeres slender; labial palp 4-segmented, the second palpomere flattened, the distal two slender; mandible with upper tooth quite long and acute, lower tooth short; basal mandibular width about 0.6 x malar space; clypeal margin very slightly concave; interantennal process small and acute; frons weakly convex, sparsely punctate ( Fig. 15 ); head in dorsal view with gena evenly rounded behind eye, the posterior ocellus separated from eye by about 0.5–0.6 x its own maximum diameter. Antenna broken, but with more than 20 flagellomeres. Mesoscutum weakly convex, sparsely punctate, without any impressions, scutellum smooth with fine sparse punctures ( Fig. 16 ); mesopleuron smooth with a few very fine setiferous punctures anteriorly and ventrally ( Fig. 17 ), with epicnemial carina complete, curved to meet anterior margin of mesopleuron just below subalar prominence; metapleuron smooth without punctures. Propodeum with lateromedian longitudinal carinae parallel, the combined area externa + dentipara, with fine setiferous punctures ( Fig. 18 ). Fore leg with tarsal claw moderately large, with a comb of very fine pectinae present, mid leg with outer mid tibial spur moderately short, about 0.5 x length of the inner; hind leg with claw simple, large, outer hind tibial spur moderately short and stout, about 0.6 x of the length of the inner. Tergite I of metasoma with area between lateromedian longitudinal carinae and lateral carinae sparsely shallow punctured; tergites II–III with area between median and lateral longitudinal carinae sparsely punctate; tegite III with carinae extending about 0.6 x its length ( Fig. 18 ).

Head black with frons brown, mandibles light brown, other mouthparts and antennal insertion region light brown ( Fig. 15 ). Antennae light brown. Mesosoma entirely black. Fore, mid and hind legs light brown, except for hind coxa and femur black. Metasoma black with tergites V+ dark brown ( Fig. 19 ). Wings hyaline, pterostigma blackish.

Male. Unknown.

Diagnosis. Structurally, Trieces broadi sp. n. resembles T. cnemotis Gauld & Sithole, 2002 ( Fig. 20 ), but differing in color patterns of legs, head and metasoma ( Fig. 21, 22 ). T. cnemotis has the propodeum lateromedian longitudinal carinae slightly divergent posteriorly and in T. broadi sp. n. they are parallel. Etymology. The species is named in honor of the curator and researcher Gavin R. Broad, Natural History Museum, London, for his attention and help during the identification work.

Distribution. Brazil.

Biology. Unknown.

Material examined. ( DCBU) Holotype 1 ♀, Brazil, SP, São Luís do Paraitinga, State Park of Serra do Mar, Santa Virgínia Center, degraded area, point 2A, 23°20’18.1”S 45°08’50.9” W, yellow pan-trap, 11.III.2013. I.F, Melo coll, ( DCBU, 36750). Paratypes ( DCBU) 2 ♀, Brazil, SP, São Luís do Paraitinga, State Park of Serra do Mar, Santa Virgínia Center, secondary succession, point 2B, 23°20’37.9” S 45°08’19.7” W, yellow pan-trap, 02.VIII.2012, I.F, Melo coll, ( DCBU, 34677).

Figures

FIGURES 14 – 19. Trieces broadi sp. n., ♀, holotype: 14, habitus, lateral; 15. head, frontal; 16, mesoscutum and scutellum, dorsal; 17, head, pronotum and mesopleuron, lateral; 18, propodeum, metasoma, dorsal; 19, propodeum, metasoma, dorsal.

FIGURES 20 – 22. Trieces cnemotis, ♀: 20, habitus, lateral; 21, head, frontal; 22, head, pronotum and mesopleuron, lateral.