Heilus myops ( Boheman, 1836 )

Lira, Aline De Oliveira, Sousa, Wesley Oliveira De, Rosado-Neto, Germano Henrique, Santos, Geane Brizzola Dos & Marques, Marinêz Isaac, 2020, A review of the South American species of Heilus Kuschel, 1955 (Curculionidae Molytinae: Molytini: Hylobiina) with emphasis on those from Brazil, Zootaxa 4861 (2), pp. 151-187 : 168-169

Heilus myops ( Boheman, 1836)

( Figs. 9 , 18G , 19F , 20F , 21F , 22F , 23G )

Heilipus myops Boheman, 1836:213 (description); Boheman 1843:51 (citation).

Hilipus myops: Gemminger & Harold 1871:2428 (catalog).

Heilipus ocellatus Olivier, 1790:510 (description); Dalla Torre et al. 1932:34 (catalog); Blackwelder 1947:819 (catalog). Heilus myops: Kuschel 1955:297 (combination); Wibmer & O’Brien 1986:145 (checklist).

Type material. Heilipus myops Boheman, 1836 : we examined the image of the holotype ( Fig. 9 ), undetermined sex, bearing the following label “Typus; Brasilia Freyreiss; Heilipus myops Bhn ; NHRS–TOBI 000003219”, deposited in the NHRS.

Redescription. Length (pronotum and elytra) of males and females 10.8 to 11.1/ 9.8 to 10.8 mm, respectively. Integument sub-opaque, varying from yellowish-brown to black. Rostrum about 1.2 times longer than pronotum.

Thorax. Pronotum ( Figs. 9 A–B) about 1.3 times wider than long, few rounded granules, sparse in approximately two transverse rows in apical region and arranged randomly on sides; with fine scales spread evenly, laterally with few scales. Elytra ( Figs. 9 A–B) about 1.5 times longer than wide, moderately convex, few transverse granules scattered from second interstria, and more concentrated from basal region to elytral callosity; yellowish or orange scales distributed evenly, sub-rounded brown to black macula wrapped by row of clear scales between striae 3 to 6 or 7, located in center of elytra; elytral striae with fine punctures forming continuous lines, flat interstriae. Male genitalia. Median lobe of aedeagus ( Fig. 18G ) with rounded sides, short and not condensed setae at apex; median lobe apodemes about 1.4 times longer than median lobe; internal sac sclerite ( Fig. 19F ) with bisinuate apex, inserted at end of internal sac, covered with very fine and elongate setae. Tegmen ( Fig. 20F ) with dorsal lobes and elongate manubrium; manubrium about 1.3 times longer than dorsal lobes. Female genitalia ( Fig. 21F ). Coxites with short setae at apex; styli transverse. Spermathecal duct short inserted into end of bursa copulatrix. Spermathecal capsule ( Fig. 22F ) curved, slightly rough on inner margin near to collum, ramus slightly developed, with wrinkles; cornu strongly curved, with rounded apex; spermathecal gland very elongate, about 1.9 times longer than bursa copulatrix, similar width from base to apex.

Dimensions (mm). Males/females, respectively. TBL: 10.8–11.1/9.8–10.8; TRL: 3.1–3.6/3.3–3.7; MHx: 4.5–5.3/4.8–5.2; RAW: 0.7–0.8/0.7–0.8; RBW: 0.7–0.8/0.7–0.8; IO: 0.4/0.3–0.4; PnL: 2.7–2.8/2.7–2.9; PnMW: 3.7–3.8/3.5–3.8; PnBW: 3.7/3.3–3.6; EL: 8.0–8.3/7.1–8.1; EW: 5.3–5.4/4.8–5.2.

Non-type material examined. In total, 20 specimens were examined. BRAZIL: Bahia: 2♀, 2, G. Bondar ( MNRJ) ; Minas Gerais: Pedra Azul , 1♀, xii.1970, F.M. Oliveira ( DZUP) , Serra Caraça , 1♀, xi.1961, Kloss, Len- ko, Martins & Silva ( MZSP) ; Espírito Santo: Córrego Itá , 1♀, 2♂, x.1954, W. Zikán ( MNRJ) , Guarapari , 1♂, x.1942 ( MZSP) , Linhares , 1♀, 1♂, iii.1953, Pedro Almeida Teles ( MNRJ) , 1♂, x.1965, A. Maller ( DZUP) , Parque Sooretama , 1♀, x.1967, F.M. Oliveira ( DZUP) , 1♀, xi.1967, F.M. Oliveira ( DZUP) , Rio Bonito , 1♀, 1♂, xi.1963, A. Maller ( DZUP) ; Rio de Janeiro: Itatiaia , 1, 27.vii.1948, J.F. Zikan ( FIOC) ; São Paulo: Campinas , 1♀, C. de Rezende ( MNRJ) . Paraná: Astorga , 1♂, xii.1957 ( DZUP) .

Geographical distribution. Heilus myops occurs in Brazil ( Wibmer & O’Brien 1986), in the Atlantic Forest (Bahia, Minas Gerais, Espírito Santo, Rio de Janeiro, São Paulo, and Paraná states) ( Fig. 23G ) .

Associated plants. Bondar (1925; 1936; 1939) recorded H. myops causing damage to new shoots and fruits of cocoa ( Theobroma cacao L. [ Malvaceae ]) in Bahia, without mentioning the specific location.

Remarks. See H. inaequalis .

Figures

FIGURE 9. Holotype Heilus myops, female. A. dorsal view. B. lateral view. C. labels. The copyright of images belongs to NHRS.

FIGURE 18. Aedeagus. A. Heilus inaequalis, dorsal view. B. Heilus inaequalis, lateral view. C. Heilus pupillatus. D. Heilus tuberculosus. E. Heilus rufescens. F. Heilus freyreissi. G. Heilus myops. H. Heilus faldermanni. I. Heilus ochrifer. J. Heilus fasciculatus. K. Heilus iniquus. L. Heilus bistigma. Legends: median lobe (ml), internal sac sclerite (sc), median lobe apodemes (mla).

FIGURE 19. Internal sac sclerite. A. Heilus inaequalis. B. Heilus pupillatus. C. Heilus tuberculosus. D. Heilus rufescens. E. Heilus freyreissi. F. Heilus myops. G. Heilus faldermanni. H. Heilus ochrifer. I. Heilus fasciculatus. J. Heilus iniquus. K. Heilus bistigma.

FIGURE 20. Tegmen. A. Heilus inaequalis. B. Heilus pupillatus. C. Heilus tuberculosus. D. Heilus rufescens. E. Heilus freyreissi. F. Heilus myops. G. Heilus faldermanni. H. Heilus ochrifer. I. Heilus fasciculatus. J. Heilus iniquus. K. Heilus bistigma. Legends: dorsal lobe (ld), manubrium (m).

FIGURE 21. Female genitalia. A. Heilus inaequalis. B. Heilus pupillatus. C. Heilus tuberculosus. D. Heilus rufescens. E. Heilus freyreissi. F. Heilus myops. G. Heilus faldermanni. H. Heilus ochrifer. I. Heilus fasciculatus. J. Heilus iniquus. K. Heilus bistigma. Legends: coxite (cx), styli (st), common oviduct (co), bursa copulatrix (bc), spermathecal duct (spd), spermathecal capsule (sp), spermathecal gland (spg).

FIGURE 22. Spermathecal capsule. A. Heilus inaequalis. B. Heilus pupillatus. C. Heilus tuberculosus. D. Heilus rufescens. E. Heilus freyreissi. F. Heilus myops. G. Heilus faldermanni. H. Heilus ochrifer. I. Heilus fasciculatus; J. Heilus iniquus; K. Heilus bistigma. Legends: cornu (cr), collum (cl), ramus (ra).

FIGURE 23. Geographical distribution of Heilus species based on labels information. A. South America Brazilian biomes and Paraguayan and Argentine ecoregions. B. Heilus inaequalis; C. Heilus pupillatus; D. Heilus tuberculosus; E. Heilus rufescens; F. Heilus freyreissi; G. Heilus myops; H. Heilus faldermanni; I Heilus ochrifer; J. Heilus fasciculatus; K. Heilus iniquus; L. Heilus bistigma.