Hesus acuminatus ( FABRICIUS 1803)

Heiss, E., 2009, Review of the Neotropical genus Hesus STÅL 1862 with description of a new species (Heteroptera, Aradidae), Linzer biologische Beiträge 41 (1), pp. 343-357 : 345-346

Hesus acuminatus ( FABRICIUS 1803) ( Fig. 1 , 11, 12 , 26 ; photo 5)

Described as Aradus acuminatus from «America meridionalis» it was transferred to Hesus by STÅL 1868. Lectotype 3, designation by HEISS 1997: 47.

This species is easily recognized by the large size, the generally ochraceous colouration of body, legs, and antennae and the elongate ridges between the oblique elevations on the anterior pronotal lobe (fig. 1). Darker brown to blackish are the posterior half of tergite and sternite VII and the lateral portions of pro-, meso-, and metasterna; in some cases the apex of antennal segment III and IV and the anterior and posterior margin of deltg III-VI and the entire tergite VII are also darker and a brownish median ring on fore leg tibiae is present (photo 5).

Pronotum with lateral margins of anterior lobe evenly rounded, disk of posterior lobe with coarse granulation (fig. 1). Deltg VII expanded laterally and angulate, terminal segments fig. 11, 12. Spiracles II-VI ventral, VII dorsolateral and visible from above, VIII terminal. Parameres wide with a deep excavation on dorsal face (fig. 26), ventral face with a file-like structure of about 18 transverse carinae.

M e a s u r e m e n t s Length 33 9.6-10.9mm, ♀♀ 11.4-11.9mm; ratio length of

antennae / width of pronotum 2.30-2.37; ratio antennal segment I / segment II 1.45.

M a t e r i a l e x a m i n e d Lectotype male (in Kiel collection, Mus. Copenhagen); Brazil: 3331 ♀ Rondonia, 62 km W Arquimenes nr. Faz. Rancho Grande 6-15 XII 1990 D.A. Rider & J.E. Eger leg., 33♀♀ 5-17 X 1993 and 8-20 XI 1994 J.E. Eger & L.B. & C.W. O’Brien lg.( CEHI) and from same locality 3-15 XII 1996 J.E. Eger lg. ( CEHI); 13 Pará ( CCMP); 13 Chapada ( CEHI). Ecuador: prov. Napo, 1♀ Sucumbios, Luubaqui 500m, 0°3N, 77°20W 1 V 1999 C. Barabanda lg. ( CGOQ); 131♀, Sucumbios, Cuyabeno 230m, 23-25 VII 1992 T. Santander lg. and Cuyabeno 400m VIII 1989 M.E. Ordonez lg. ( CGOQ); 1♀ Napo, Misuahalli 28 XII 1995 M. Rodriguez lg. and 1♀ 14 XII 1985 ( CGOQ); 13 Jatun Sacha 450m, 4-7 IV 1996 M. Carrera lg. ( CGOQ); 132♀♀ Napo, Puerto Maldonado 1650-1900ft, 6-19 IX 1998 J.E. Eger lg. ( CEHI); 2331 ♀ Napo, Las Palmas 0°38S, 77.03W 200-400m, 3 XII 2004 and Loreto, 0°42S, 77°19W 200- 600m, 30 XI-3 XII 2004 P. Banař lg.( CEHI). Colombia: 13 Letizia 29 VIII-5 IX 1970 J.S.M. Sedlacek lg. ( CEHI). Bolivia: 1♀ Bolivia tropical, region Chapare 400m, Zischka lg. ( CEHI); 1♀ Cochabamba prov., Villa Tunari, Hotel los Tucanes 16°58S, 65°23W 320m, 5 IX 2000 M. Hauser lg. ( CEHI). Peru: 2331 ♀ Monson valley , Tingo Maria, 26 X and 10 XII 1954 Schlinger & Ross lg. ( CEHI); 1♀ Tarma valley nr. San Ramon, 1100-1300m 18 X 1980, L. Beck & H.W. Mittmann lg. ( CEHI); 1♀ Pachitea ( CEHI). French Guyana: 131♀ Montagne de Kaw , Fourgassié env. 5 VIII 2006 lg. Snižek ( CEHI) 1♀ 4 IX 2008, piège vitre d’interception, lg. J.L. Giuglaris ( CGMM); 13 Cacao, degrad Kwata sur crique Bagot, 23 VIII 1996, lg. J.P. Vesco ( CGMM); 13 PK 1 route de Cacao, 4/ 7 III 2000, lg. D. Rignon ( CGMM); 13 Saint-Laurent du Maroni, forêt de Saint-Jean, 23 II 2007, à vue, lg. G Moragues ( CGMM); 13 Régina, RN 2 PK 125 + 3, 28 II 2008, 1♀ 26 VII 2008, 1♀ 19 VII 2008, 13 2 IX 2008, all piège vitre d’interception, lg. J.L. Giuglaris ( CGMM); 1♀ pk 27 Montagne de Kaw , layon Degrad Lalanne, 10 VIII 1996, lg. J.P. Vesco ( CGMM); 1♀ same locality PK 35, 31 III 2003, piège malaise; 13 9 VIII 2007, à vue, both lg. J.A Cerda ( CGMM); 1♀ same locality PK 36, 20 VII 1998, à vue, lg. G. Moragues; 1♀ 29 IV 2000, piège malaise, lg. J.A. Cerda 1♀ 20 XI 2002, à vue, lg. O. Morvan; 13 1 V 2004, à vue; 13 14 IX 2004, à vue; 1♀ 23 VIII 2005, à vue, all lg. J.A. Cerda ( CGMM); 13 same locality PK 37.5 + 2, 1 VIII 2003, à vue; 1♀ 3 VIII 2003, à vue, both lg. J.A. Cerda ( CGMM); 1♀ same locality PK 42, 15 V 2005, à vue, lg. J.A. Cerda ( CGMM); 1♀ same locality PK 47, 9 II 1994, lg. J.A. Cerda ( CGMM); 2♀♀ 25 km NW St. Laurent du Maroni, route Paul Isnard, 17 I 2007, lg. Snižek ( CEHI); 13 Saül, layon des Eaux Claires, abattis en forêt, 3.622° N 53.208°W, 4 IV 2000, lg. J.C. Streito ( CEHI); 2♀♀ Mana River , May 1897 Acc. 6008 ( CCMP).

D i s t r i b u t i o n: This seems to be a species of the lowland rainforests of the Ama-

zon Basin and adjacent areas. Recorded from French Guyana, Brazil, Colombia, Ecua-

dor, Bolivia, to Peru.

Figures

Fig. 1-4: Head and pronotum of Hesus spp. (1) H. acuminatus, (2) H. flaviventris; (3) H. cordatus; (4) H. humeralis nov.sp. Scale 1 mm.

Fig. 5-18: Hesus spp. 5-6 head and pronotum. (5) H. subarmatus; (6) H. mexicanus; (7-18) terminal segments of male, dorsal and lateral view. (7-8) H. humeralis nov.sp.; (9-10) H. cordatus; (11- 12) H. acuminatus; (13-14) H. subarmatus; (15-16) H. flaviventris; (17-18) H. mexicanus. Scale 1 mm.

Fig. 19-29: Hesus spp. 19, 22-26 right paramere, dorsal face; (19-20) ditto ventral face; (27-29) pygophore lateral view. (19-21, 27) H. humeralis nov.sp.; (22) H. cordatus; (23, 28) H. subarmatus; (24, 29) H. mexicanus; (25) H. flaviventris; (26) H. acuminatus. Scale: 0.1 mm for fig. 19-26; 0.5 mm for fig. 27-29. fs = file like structure; pa = paramer.