Heteroscelis robustus Thomas, 1992

(Figs. 1, 25–29)

Heteroscelis robustus Thomas, 1992: 49; Grazia & Schwertner 2011: 713; Silva et al. 2018: 404.

Types examined. BRAZIL. Heteroscelis robustus Thomas, 1992; male holotype; labels: “ HOLOTYPE. Heteroscelis robustus Thom. ”, “Braz. Mato Grosso — Barra do Tapirape. 26–XII–62. B. Malkin ”. “ California Academy of Sciences ”. “Type n°: 16773” (CAS). Photo examined (Fig. 26) .

Other material examined. BRAZIL, Amazonas: (Manaus, Conj. Manca. -3.04361, -60.01282), 1 female, 10.V.1988 P.E.S. Silva (INPA); Roraima: (Boa Vista, 3.18861, -60.61212), 1 female, 31.V.1974 (UFRG); Pará: (Peixe-Boi, -1.10168, -47.27259), 1 female, 12.IV.1977 P Waldir (UFRG); (Marituba, -1.37399, -48.3142), 1 female, 07.VI.1961 J & B. Bechyné (UFRG); Mato Grosso: (Chapada dos Guimar „es, -15.02015, -55.53735), 1 female, 20.I.1961 J & B. Bechyné (UFRG); São Paulo: 3 females, J. Mráz (NMPC); Rio Grande do Sul: (Salvador do Sul, -29.48006, -51.51407), 1 male, 16.X.1994 (MCTP); COLOMBIA, (Meta, San Martín, Reserva Natural El Caduceo, Km 4.5, Via San Francisco, 3.671389, -73.659444), 1 male, 30.IX–4.X.2013 M Arango (MPUJ _ENT).

Diagnosis. Body robust compared to the other species, dark-brown to black; unpunctured, yellowish longitudinal line extending from the anterior margin of the pronotum to the posterior margin of the scutellum; radial vein of coria usually yellowish; foretibial length on average ten times larger than the width of the dorsal tibial expansion (Fig. 25, F); capsula seminalis digitiform.

Redescription

HEAD: Mandibular plates equal to or slightly surpassing clypeus, rounded at apex, never touching each other; head length anterior to the eyes smaller than 2/3 of the total length of the head (Fig. 25, D); labium reaching the metasternum; proportion of labiomeres: I<II>III ≅ IV; proportion of antennomeres: I<II<III ≅ IV ≅ V.

THORAX: Coria longer than the scutellum, not reaching the posterior margin of the connexival segment VI; metapleural evaporatoria not surpassing posteriorly the anterior limit of coxae; peritreme disc-shaped, surpassing half the pleural width; apex of peritreme rounded, posterior margin arched, convex, anterior margin almost straight (Fig. 25, E).

ABDOMEN: Uniformly punctured; urosternite III tubercle not surpassing the posterior margin of metasternum; posterior angles of urosternites III to VII ending in minute spine, more developed in VII (Fig. 25, B).

Male:

MEASUREMENTS (n=2). Head length 1.24 ± 0.05 (1.20–1.28); width 1.48 ± 0.05 (1.44–1.52); pronotum length 1.88 ± 0.16 (1.76–2.00); width 4.12 ± 0.16 (4.00–4.24); scutellum length 2.60 ± 0.05 (2.56–2.64); width 2.60 ± 0.05 (2.24–2.40); length of antennomeres: I (n=1) 0.32, II 0.64 ± 0.11 (0.56–0.72), III 0.84 ± 0.05 (0.80–0.88), IV 0.96 ± 0.11 (0.88–1.40); V (n=1) 1.12; length of labiomeres: I 0.68 ± 0.05 (0.64–0.72), II 0.72 ± 0.00 (0.72–0.72), III 0.40 ± 0.00 (0.40–0.40), IV 0.48 ± 0.00 (0.48–0.48); width of foretibal expansion 0.20 ± 0.05 (0.16–0.24); width of abdomen 3.40 ± 0.28 (3.20–3.60); total length (n=1) 7.20.

GENITALIA: Pygophore (Fig. 27): setae denser on medial portion of dorsal rim; dorsal rim sinuous, medially concave; ventral rim sinuous, shallowly concave medially; segment X setose on the entire surface; heads of parameres lateroventrally directed in posterior view. Phallus (Fig. 28): conjunctival dorsal lobe with one pair of long projections, ventral lobes with two projections each.

Female:

MEASUREMENTS (n=8). Head length 1.12 ± 0.09 (1.00–1.28); width 1.40 ± 0.05 (1.44 –1.53); pronotum length 1.96 ± 0.21 (1.76–2.20); width 4.42 ± 0.33 (4.16–5.00); scutellum length 2.99 ± 0.26 (2.72–3.50); width 2.66 ±0.25 (2.40–3.10); length of antennomeres: I (n=6) 0.38 ± 0.03 (0.32–0.44), II (n=4) 0.71 ± 0.10 (0.60–0.80), III (n=4) 0.98 ± 0.09 (0.88–1.10), IV (n=1) 1.12; V (n=1) 1.04; length of labiomeres: I (n=7) 0.76 ± 0.07 (0.70–0.90), II (n=7) 0.90 ± 0.11 (0.80–1.10), III (n=7) 0.40 ± 0.05 (0.32–0.50), IV (n=7) 0.50 ± 0.04 (0.48–0.60); width of foretibal expansion (n=5) 0.25 ± 0.06 (0.16 –0.30); width of abdomen 4.06 ± 0.25 (3.68–4.50); total length (n=6) 7.67 ± 0.88 (6.56 –8.90).

GENITALIA (Fig. 29): Valvifers VIII posterior margin bisinuous, truncate over the laterotergites VIII, and slightly projected over the basal angles of laterotergites IX, setae on sutural margins; laterotergites VIII slightly longer than wide, with spiracles close to the lateral margin; segment X with the posterior margin straight; valvulae IX with 1+1 secondary thickenings, these bean-shaped with the anterior margin elongated with acute apices; vesicular area half the length of the proximal part of the ductus receptaculi.

Distribution: Paraguay, Colombia (new record) and Brazil (Fig. 1).