Cataulax eximius (Stål, 1860), Stal, 1860

Grazia, Jocélia, Campos, Luiz A. & Becker, Miriam, 2000, Revision of Cataulax Spinola, with Architas Distant as a New Synonymy (Heteroptera: Pentatomidae: Discocephalini), Anais da Sociedade Entomológica do Brasil 29 (3), pp. 475-488 : 478-481

Cataulax eximius (Stål, 1860) ( Figs. 1 , 2A , 3A , 4A , 5A , 6A-C , 7A , 8A )

Cataulax macraspis Spinola, 1837: 339 (not Perty); Dallas, 1851: 269.

Hypata eximia Stål, 1860: 16 .

Cataulax eximius: Stål, 1872: 7 ; Lethierry & Severin, 1893: 85; Kirkaldy, 1909: 216.

Relatively large species; three to five pale, laevigate, longitudinallines on head, intercalated with four subparallel rows of fine piceous punctures; eight small clusters of piceous punctures on pronotum, two at each humerusand four across crest of the disc, and three, more or less parallel longitudinal lines of fine punctures on exocorium, endocorium with patches of punctures ( Fig. 1 ).

External apical angle of corium distinctly exceeding rounded apex of scutellum, clearly attaining or barely surpassing apical margin of the seventh tergite. Rostrum almost attaining apical margin offifth sternite. Apical margin of metasternum broadly and shallowly sinuate, median abdominal tubercle correspondingly obtuse and broad.

Male. Apical marginof membrane straight, three or four external veins of membrane subparalell, not convergent towards apical margin ( Fig. 2A ). Measurements (mm). Lengthofhead 2.29(2.13-2.46); anteocularlength 1.47(1.31- 1.64); width of head 4.03(3.77-4.10); Phallus : articulatoryapparatus slender, basal plates narrow, ponticulus transversalis large, expanded, membranous; processus capitati not developed. Vesicawith 2+2 dorsal procinterocular width 2.62(2.46-2.68); interocelar width 1.18(1.14-1.31); length of antennal segments: I 0.85(0.82-0.98), II 1.50(1.31-1.64), III 1.70(1.64-1.80), IV 2.25(2.13-2.29), V 2. 29; pronotallength 3.44(3.28-3.60); pronotal width 8.29(7.70-8.69); length of scutellum 7.54(7.05-8.03); width of scutellum 5.47(5.08-5.74); abdominal width 8.33(7.87- 8.69); total length 13.28(12.79-13.61).

Postero-lateral angles of pygophore somewhat extended outwards, internal border carinate ventrally, denticle obvious. Parameres erect, spatulate, with strong ridges along external borders, obliquely truncate at apex surpassing postero-lateral angles of pygophore. Proctiger with 1+1 lateral process, at mid length, anteriorly directed. ( Figs. 3A , 4A , 5A ). esses, the basal one as a mere projection, the second one forming arms embracing free portion of ductus seminis distalis ( Fig. 6A-C ).

Female. Measurements (mm). Lengthofhead 2.39(2.29-2.46); anteocularlength 1.50(1.47- 1.64); width of head 4.03(3.93-4.01); interocular width 2.55(2.46-2.62); interocelar width 1.24(1.14-1.31); length of antennal segments: I 0.98, II 1. 44(1.31-1.64), III 1.73(1.64-1.80), IV 2.32(2.29-2.46), V 2.37(2.29-2.46); pronotallength 3.57(3.44- 3.77); pronotalwidth 8.49(8.03-8.85); length of scutellum 7.57(7.21-8.03); width of scutellum 5.57(5.08-5.74); abdominal width 8.42(8.03-8,69); total length 13.51(12.95- 13.77).

Gonocoxites 8 much wider than long, sutural borders rectilinear, adjoining each other; distal border smoothly rounded. Laterotergites 9 simple not surpassing transverse band connecting laterotergites 8 dorsally. Posterior border of laterotergites 8 smoothlyrounded ( Fig. 7A ). Esclerotizedarea of gonocoxites 9 thin, almost inconspicuous, limits between gonocoxites 9 and gonapophyses 9 not clear. Orificium receptaculi surrounded by a conical, simple thickening of vaginal intima, chitinellipsen at each side of its base. Capsula seminalis simple, globose ( Fig. 8A ).

Type. Female deposited at Natural History Museum, Stokholm.

Material Examined. Brazil: Minas Gerais: male, female, Pedra Azul, I/1971, F. M. Oliveira ( AMNH) ; female, Cambuquira, II/ 1942, H. S. Lopes ( IOC) ; Espírito Santo: male, Guarapari, XI/1961, M. Alvarenga ( UFPR) ; female, Santa Teresa, XII/03/1964, C. Elias ( UFPR) ; Rio de Janeiro: male, Manguinhos , Rio de Janeiro, XII/20/1913, A. Lutz ( IOC) ; female, Rio de Janeiro, 1936 ( DZRS) ; male, Corcovado, idem, 1954, Zajciv ( MNRJ) ; female, idem, XI/25/1952, idem ; female, idem, VIII/1965, Alvarenga & Seabra ( IOC) ; female, Japuhyba, Angra dos Reis , IV/17/1942, H. Travassos, ( MCN 1709 ) ; female, Serra de Petrópolis, II/1933 L. Travassos ( DZRS) ; male, Tinguá, Nova Iguaçu , XII/01/1959, J. Evang. ( DZRS) ; male, Conceição do Macabú, IX/1978, M. Alvarenga ( DZRS) ; male, Represa Rio Grande , I/1972, M. Alvarenga & F. M. Oliveira ( AMNH) ; male, idem [ Guanabara ] , vii-ix/1969, F. M. Oliveira ( AMNH) male, female, idem, III/02/1967, M. Oliveira ( UFPR) ; São Paulo: female, Ilha de São Sebastião , I/1959 ( DZRS) ; female, Ilha dos Búzios X/16-XI/4/1963, Exp. Dep. Zool. ( MZSP) ; Paraná: female, Morretes [ IAPAR], I/06 /185, CIIF [light], ( UFPR) ; female, Antonina , Reserva Sapitanduva , X/31/1986, PROFAUPAR [light] ( UFPR) ; Santa Catarina: male, Joinville, VIII/1956, Dirings ( MCN1706 ) ; female, Corupá , XII/1953, A. Maller ( DZRS) ; female, idem, III/1956, A. Maller ( UFPR) ; male, no data .

Comments. This species isthe largestoneand as C. froeschneri and C. subtiliterconspersus has lobedand spined parameres. It can be distinguished from them by the pattern of the membrane venation; in the last two species three or four external veins are convergent to a darker peg.

Figures

Figure 1. Cataulax eximius Stål, 1860.

Figure 2. Male’s hemelytral membrane.A) C. eximius Stål, 1860; B)C. froeschneri, n. sp.; C) C. pudens (Distant, 1889); D) C. radians, n. sp.; E) C. subtiliterconspersus, n. sp.

Figure 3. Pygophore, dorsal view. A) C. eximius Stål, 1860; B) C. froeschneri, n. sp.; C)C. pudens (Distant, 1889); D) C. radians, n. sp.; E) C. subtiliterconspersus, n. sp. (db = dorsal border, pla = postero-lateral angles, par = parameres, prpro = process of proctiger, vm= ventral margin, IX= 9th abdominal segment, X= 10th abdominal segment).

Figure 4. Pygophore, ventral view. A) C. eximius Stål, 1860; B) C. froeschneri, n. sp.; C) C. pudens (Distant, 1889); D) C. radians, n. sp.; E)C. subtiliterconspersus, n. sp. (pla = posterolateral angles, par = parameres, vb= ventral border, IX= 9th abdominal segment, X= 10th adominal segment).

Figure 5. Pygophore, posterior view. A) C. eximius Stål, 1860; B)C. froeschneri, n. sp.; C)C. pudens (Distant, 1889); D) C. radians, n. sp.; E) C. subtiliterconspersus, n. sp. (db = dorsal border, pla = postero-lateral angles, par = parameres, prpro = process of proctiger, vb = ventral border, X = 10th abdominal segment).

Figure 6. Phallus, dorsal, ventral, and lateral views respectively for each species. A-C)C. eximius Stål, 1860; D-F) C. pudens (Distant, 1889); G-I) C. subtiliterconspersus, n. sp. (bpl = basal plate, dc1 = dorsal connectives 1, dc2 = dorsal connectives 2, ds = ductus seminis distalis, me = membramblase, pc =processus capitati, ph =phallotheca, prph =processus phallothecae, prv1 = processus vesicae 1, prv2 = processus vesicae 2, pt = ponticulus transversalis, sg = second gonopore, v = vesica).

Figure 7. Female genital plates. A)C. eximius Stål, 1860; B)C. pudens (Distant, 1889); C)C. subtiliterconspersus, n. sp. (gc8 = gonocoxites 8, la8 = laterotergites 8, la9 = laterotergites 9, VII = 7th abdominal segment, X = 10th abdominal segment).

Figure 8. Female genital plates and ectodermal genital ducts. A)C. eximius Stål, 1860; B)C. pudens (Distant, 1889); C) C. subtiliterconspersus, n. sp. (aac = anterior anular crest, ch = chitinellipsen, cs = capsula seminalis, dr = ductus receptaculi, g9 = gonapophyses 9, gc9 = gonoxites 9, la9 = laterotergites 9, or = orificium receptaculi, pac = posterior anular crest, pi = pars intermedialis, tvi = thickening of vaginal intima, X = 10th abdominal segment