Pseudisobrachium latum, Waichert, C. & Azevedo, C. O., 2004

Waichert, C. & Azevedo, C. O., 2004, Fourteen new species of Pseudisobrachium (Hymenoptera, Bethylidae) from Atlantic rain forest of Espírito Santo, Brazil, Zootaxa 661, pp. 1-22 : 17-18

Pseudisobrachium latum sp. nov. ( Figs. 48–51 )

Description.— Male. Body length 2.68 mm; LFW 2.08 mm. Color: head black; pronotum light castaneous, mesonotum and metasoma dark castaneous; mandible and clypeus light castaneous; antenna dark castaneous, scape and pedicel light castaneous; legs light castaneous; wings subhyaline, veins dark castaneous. Pubescence conspicuous.

Head ( Fig. 48 ): mandible with 5 teeth ( Fig. 49 ). Clypeus with trapezoidal median lobe, apical margin concave and angled, median carina arched in profile. First four antennal segments in a ratio about 27:7:24:22; segment III 3.25 X longer than thick, segment XI 3.0 X; flagellar pubescence suberect, with some erect setae. Frons coriaceous, punctures almost inconspicuous, shallow. WH 0.92 X LH, WF 0.64 X WH, WF 1.32 X HE; ocellar triangle elongate, with acute frontal angle, DAO 0.16 X WF; OOL 1.64 X WOT; VOL about 0.96 X HE. Vertex broadly rounded. Temples divergent anteriorly. Occipital carina visible in dorsal view.

Mesosoma: pronotum and mesonotum coriaceous, punctured as on frons; notauli shallow, present only on anterior fourth of mesoscutum; parapsidal furrows complete; scutellar disc coriaceous, punctures as on frons. Propodeal disc 0.87 X as long as wide, 1.36 X as long as high, few shining, median carina incomplete and irregular, propodeum areolate, weakly on lateral sides. Mesopleuron coriaceous with coriaceous callus. Fore wing with discoidal vein spectral, interstitial with the median vein.

Genitalia ( Figs. 50–51 ): paramere with ventral arm approximately 2.0 X wider than dorsal arm, dorsal arm centrally turned; vannus with about 7 transverse grooves; aedeagus uniformly elongate, weakly dilated basally, its apex lower than the apex of paramere.

Material examined.– HOLOTYPE: male, BRAZIL, Espírito Santo, Santa Teresa, Estação Biológica de Santa Lúcia, 23.VI.2001, sweeping, C.O. Azevedo & R. Kawada col. ( UFES). PARATYPES: BRAZIL, Espírito Santo, 0 7 males, Santa Teresa, Estação Biológica de Santa Lúcia, 23.II–27.IX.2001, sweeping, C.O. Azevedo & R. Kawada col. ( UFES).

Discussion.— This species is similar to P. acuminatum , but it has dorsal arm of paramere of genitalia more angled and wider, and the head is longer and the temples more divergent anteriorly.

Etymology.— The specific epithet refers the wide dorsal arm of parameres in comparison to P. acuminatum .

Distribution.— Brazil (Espírito Santo).

Figures

FIGURES 38 – 51. 38 – 42, Pseudisobrachium amplum sp. nov. 38, head, dorsal view; 39, mandible, frontal view; 40, genitalia, ventral view; 41, ventral arm of paramere, lateral view; 42, dorsal arm of paramere; 43 – 47, Pseudisobrachium intentum sp. nov. 43, head, dorsal view; 44, mandible, frontal view; 45, genitalia, ventral view; 46, dorsal arm of paramere, lateral view; 47, ventral arm of paramere; 48 – 51, Pseudisobrachium latum sp. nov. 48, head, dorsal view; 49, mandible, frontal view; 50, genitalia, ventral view; 51, paramere, lateral view. (Scale bars = 250 μm for head and mandible, = 130 μm for genitalia).