Diariptus hexacanthus Stål

Brailovsky, Harry, 2008, Revision of the genus Diariptus Stål (Hemiptera: Heteroptera: Coreidae: Meropachydinae: Spathophorini), Zootaxa 1936, pp. 59-65 : 62-63

Diariptus hexacanthus Stål

( Figs. 1, 5, 9–10 )

Diariptus hexacanthus Stål, 1859: 452 .

Diariptus nigridens Stål, 1870: 128 . nov. syn.

Redescription. Male. Head length 1.94; width across eyes 2.54; interocular space 1.50; interocellar space 0.70; preocular distance 1.38; antennal segments length I, 4.52, II, 3.59, III, 2.48, IV, 5.12; pronotum length 4.89; width across humeral angles 6.38; scutellar length 2.79; width 2.51; total body length 24.90.

Coloration. Ground color yellow; antennal segment I dull orange, II to IV shiny orange; base and apex of scutellum yellowish cream; following areas black: apex of rostral segment IV, spines and tubercles of femora and tibiae, and posterior angle of connexival segments III to VI including the spine; mesosternum, metasternum, and metathoracic peritreme including evaporative area tinged with yellowish orange; hemelytral membrane ambarine, translucent; hind tibia basally dark orange. Structure. Scutellum. Longer than wide ( Fig. 1 ). Abdomen. Connexival segments IV and V with posterior angle produced into long, broadly based spine, perpendicular to abdominal margin and rather slender, and VI produced into short and robust spine obliquely posteriad ( Fig. 5 ). Paramere. Body elongate, narrowed ( Figs. 9–10 ).

Female. Head length 1.79; width across eyes 2.31; interocular space 1.48; interocellar space 0.74; preocular distance 1.19; antennal segments length I, 4.65, II, 3.41, III, 2.29, IV, 5.02; pronotum length 4.89; width across humeral angles 6.08; scutellar length 2.85; width 2.51; total body length 24.38. Coloration similar to male. Connexival segments VIII and IX, dorsal abdominal segments VIII and IX, and genital plates yellow. Structure. Abdomen.Posterior angle of connexival segments IV and V produced into short spine, directed outward or slightly obliquely posteriad.

Variation. Spines and tubercles of femora and tibiae yellow with apex black.

Type material examined. Diariptus hexacanthus : TYPE: male, Brazil, Cameta, Sieber ( ZMHB). Diariptus nigridens : HOLOTYPE: female, Brazil, Amazon, Stevens ( NHRS).

Additional material examined. New records. BRAZIL: 1 female, Mato Grosso, Sinop, 12°31´S – 55°37’W, X-1974, M. Alvarenga ( AMNH); 2 males, Santarem, VI-1919, S. M. Klages ( CMNH); 1 female, Sao Paulo de Olivenca, IV-1023, S. M. Klages ( CMNH); 1 male, 1 female, Para, Itaituba, Rio Tapajoz, (without date), Dirings ( MZSP); 1 male, Para, Tirios, Alto Parú d’ Oeste, 1-II-1963, Machado and Pereira ( UNAM); 1 female, Para, Itaituba, Parque Nacional Amazonia, 13-XI-1978, R. B. Neto ( UNAM).

Distribution. Known only from Brazil.

Figures

FIGURE 1 – 10. Diariptus spp. 1 – 2. Scutellum. 1. Diariptus hexacanthus Stål. 2. Diariptus napoanus n. sp. 3. Caudal view of male genital capsule of Diariptus napoanus n. sp. 4 – 6. Abdomen. 4. Diariptus napoanus n. sp. (male). 5. Diariptus hexacanthus Stål (male). 6. Diariptus napoanus n. sp. (female). 7 – 10. Paramere. 7 – 8. Diariptus napoanus n. sp. 9 – 10. Diariptus haxacanthus Stål.