Hesus humeralis, Heiss, 2009

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 : 344-345

Hesus humeralis nov.sp. ( Fig. 4 , 7, 8 , 19-21, 27 ; photo 1, 2)

D i a g n o s i s:Largerspecies,mostresemblingandconfounded with Hesus cordatus . It is however distinguished from the latter by the angular not rounded humeri, the dark brown unicolorous antennae and legs (bicoloured in H. cordatus ), and other characters given in the key.

D e s c r i p t i o n: Macropterous male. Colouration dark brown, body partly covered by a thin yellowish incrustation, apodemal impressions ochraceous (glabrous spots of USINGER & MATSUDA 1959) on deltg III-VII as well as the postero-interior and exterior angles of deltg III-VI and an oblique spot on membrane posterior to apex of corium; corium and membrane usually of lighter brownish to ochraceous colour with contrasting dark brown veins (photo 1, 2). Venter medially and apodemal impressions of sternites ochraceous.

H e a d: Distinctly longer than wide across eyes (37/25); genae surpassing clypeus, contiguous anteriorly but leaving a notch at apex. Antenniferous lobes subparallel with rounded apex. Antennae about 2.9 x as long as width of head, segment I longest and thicker than the following ones, II shortest, III cylindrical, about twice as long as II, IV fusiform and slightly longer than II. Relative length of antennal segments I:II:III:IV = 27/11/20/14. Eyes inserted, not protruding. Postocular lobes angular, lateral margins subparallel. Rostrum arising from a slit-like atrium, rostral groove as long as head, carinate laterally and open posteriorly.

P r o n o t u m:Distinctlywiderthanlong (68/38); lateral margins subparallel at angulate humeri, then sinuate and roundedly converging anteriorly, anterior margin with a ring-like collar, disk with a distinct transverse impression separating the granular posterior lobe from the longitudinally rugose anterior lobe; the latter medially with 2 (1+1) smooth, oblique, anteriorly converging elevations, these delimited anteriorly by 2 (1+1) larger contiguous roundish tubercles (fig. 4).

S c u t e l l u m: Triangular, base and lateral margins carinate, disk transversely rugose and longitudinally elevated medially.

A b d o m e n Subparallel, only slightly widening posteriorly from deltg II-VI; deltg II-V subrectangular, VI trapezoidal and laterally produced, VII rectangular, each with 2 round apodemal impressions, posteroexterior angles slightly protruding. Tergal plate covered by hemelytra, an exposed lateral carina separates it from deltg III-VI. Spiracles II-V ventral, VI lateral and visible from above, VII dorsolateral placed on reflexed rim of ventral laterotergite VII. Terminal segments as fig. 7, 8.

H e m e l y t r a: Corium with carinate lateral margin and elevated veins, membrane of lighter colour with darker reticulate veins.

L e g s: Femora and tibiae straight and cylindrical, claws with long curved pseudopulvilli and setiform parempodia.

G e n i t a l i c s t r u c t u r e s: Pygophore wider than long (19/16), surface granulate, dorsally with a conical median sclerite produced backward over the lower globose portion; paratergites VIII truncate reaching ¾ of pygophore. Parameres with a file-like structure of 12 carinae on ventral face, fig. 19-21.

M e a s u r e m e n t s: Length, 10.2 mm; width of pronotum 3.4 mm; width of abdomen across deltg IV 4.4mm.

F e m a l e: Generally as male but of larger size, deltg VII triangular, mediotergite VII with two large blunt elevations, depressed in between, posterior margin straight.

Range of size in paratypes: Length 33 9.4-10.4 mm; ♀♀ 11.3-12.4 mm.

E t y m o l o g y: Referring to the conspicuous angulate humeri of pronotum.

M a t e r i a l e x a m i n e d Holotype 3 Ecuador. prov. Sucumbios, Shushifindi 0°11’S, 76°38’W, 200-400m, 4-8 XII 2004 P. Banař lg. ( CEHI) ; Paratypes: Ecuador: 2333 22♀♀ with data as holotype ( CEHI) ; 433 4♀♀ prov. Sucumbios, San Antonio 0°17’S, 76°39’W, 200-400m 3 XII 2004, 833 5♀♀ prov. Sucumbios, Dureno 0°03’S, 76°40’W, 200-400m 9 XII 2004 and 333 prov. Napo, Las Palmas 0°38’S, 77°03’W 200-400m 3 XII 2004, all P. Banař lg. ( CEHI) ; 1♀ Napo, Cuyabene IV 1884 E. Asanza lg. ( CEHI) ; 13 Napo, Yampuna 23 I 1989 Sandoval lg. ( CGOQ) ; Colombia: 4331 ♀ Vaupes Mitú 5 VII 2003 A. Peña lg ( CEHI) ; Peru: 13 Amazonia, Iquitos 11 II 1977 E. Heiss lg. ( CEHI) ; 13 prov. Madre de Dios, env. puerto Maldonado II 1995 A. Pisano lg. ( CEHI) ; 13 prov. Huánuco, Rio Llullapichis, Stat. Panguana 9°37’S, 74°76’W 330m, 20 XI- 14 XII 2008 F. Wachtel lg. ( CEHI) ; Brazil: 8336 ♀♀ Amazonia, Manaus, garden of hotel Amazonia under logs of broken branches on the round, 29 VIII 2000 E. Heiss lg. ( CEHI) ; 13 Amazonia, Paraque 30km east Manaus, 110ft 17 I 1981 R. Davidson lg. ( CEHI) ; 2331 ♀ Amazonia, Mission Cauaburi, Canal Maturach 70m, 14 XII 1962 C. Lindemann lg. ( CEHI) ; 2331 ♀ "Amazon sup.", Olivença (without date and collector) ( CEHI) ; 1♀ Rondonia, Rio Jacundá 20 II 1962 and 1♀ V 1964 E.H. Bon lg. ( CEHI) ; 4333 ♀♀ Amazonia, 30km east Manaus, Taruma falls 100m, 12 II-1 III 1981 G. Ekis & C. Young lg. ( CCMP) ; 13 Amazonas 1943, A. Parko lg. ex.coll. Campos Seabra / Kormilev ( CEHI) ; 13 Rondonia 62 km W Arquimenes nr. Faz. Rancho Grande 6-15 XII 1990, D.A. Rider & J.E. Eger lg. ( CEHI). French Guyana: 1♀ Route de Cacao PK1, XI 1997, D. Rignon lg. ( CGMM) ; 1♀ Cacao, Degrad Kwata sur crique Bagot , 18 XI 1996 J.P. Vesco lg. ( CGMM) ; 1♀ Montagne de Kaw PK 37, 23 IX 1998 M. Berenger lg.( CEHI) ; 13 Kourou, route Sinamary , XI 1992 (unknown collector) ( CEHI) ; 13 Kourou, piste Soumourrou 23 XII 2002 / 6 II 2003, piège malaise, lg. D. Faure ( CGMM) ; 1♀ RN2 PK 22, Montagne des Chevaux , 22 XI 2008, piège vitre d’interception, lg. S. Brulé & P.H. Dalens ( CGMM) ; 1♀ Régina, RN 2 PK 125+3, 19 X 2008, piège vitre d’interception, lg. J.L. Giuglaris ( CGMM) .

Paratypes will be deposited in following institutions: Biologiezentrum Linz , Austria ; Natural History Museum Vienna, Smithsonian Institution, Washington D.C. and American Museum of Natural History , New York .

D i s t r i b u t i o n: So far recorded from Venezuela, French Guyana, and the Amazon Basin of Brazil, Peru, Ecuador, and Colombia.

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.