Heilus Kuschel 1955

Lira, Aline De Oliveira, Sousa, Wesley Oliveira De & Marques, Marinêz Isaac, 2023, Four new species of Heilus Kuschel 1955 (Curculionidae, Molytinae, Molytini, Hylobiina) from Brazil, Zootaxa 5336 (2), pp. 206-216 : 214-215

Additions to key to South American species of Heilus Kuschel 1955

These new species are placed in the key to South American species of Heilus Kuschel 1955 adapted from Lira et al. (2020) as follows:

6. Pronotum with subparallel sides, 1.5 times wider than long; without macula on the elytra (Fig. 14)................................................................................................... H. inornatus (Kirsch, 1874)

- Pronotum more strongly rounded on the sides; with or without dense yellow scales forming a transverse band in the posterior third of elytra....................................................................................... 6A

6A. Pronotum 1.3 times wider than long; with dense yellow scales forming a transverse band at the base of elytra and another one in the posterior third interrupted at the striae............................................ H. iniquus (Kirsch, 1874)

- Pronotum 1.4 times wider than long; without a transverse band of dense yellow scales on the elytra.................................................................................. H. obrieni Lira, De Sousa & Marques sp. nov.

8. Pronotum and elytra with more protuberant and denser granules; elytra with small, elongate macula, occupying the median third of interstria 4, in some specimens with thickening of white scales, forming small spots scattered over the elytra; in some specimens with elytra with tufts of black scales in front of some dorsal granules ( Fig. 4 ).... H. inaequalis (Boheman, 1836)

- Pronotum and elytra with smaller, sparse granules; elytra with macula in different shapes........................... 8A

8A. Elytra with larger, oval to irregular macula usually occupying interstriae 3 and 6, entirely outlined by a narrow band of whitish scales....................................................... H. christinae Lira, De Sousa & Marques sp. nov.

- Elytra with rounded macula occupying interstriae in different arrangement....................................... 8B

8B. Elytra with almost rounded macula usually occupying interstriae 3 to 6 or 7, entirely outlined by a narrow band of whitish scales......................................................................... H. myops (Boheman, 1836)

- Elytra with more rounded and smaller macula usually occupying interstriae 3 and 5, incompletely outlined by a narrow band of whitish scales............................................... H. rosadonetoi Lira, De Sousa & Marques sp. nov.

12. Without maculae in the middle of elytra................................................................. 12A

- Irregular maculae in the middle of elytra.................................................................. 13

12A. Elytra with rounded granules distributed from base to apical callus, smaller granules in apical region; with transverse band of yellowish or reddish brown scales distributed from middle of elytra to apical callus.......... H. ochrifer (Boheman, 1843)

- Elytra with transverse granules, slightly elevated; with irregular rows of yellowish flattened scales, distributed transversally between striae 1 and 9 at beginning of apical third of elytra............... H. vanini Lira, De Sousa & Marques sp. nov.

Figures

FIGURE 4. Heilus obrieni, paratype male: A. Dorsal view. B. Lateral view. C. Aedeagus. D. Endophallite. E. Tegmen. F. Female genitalia. G. Spermathecal capsule. H. Abdominal tergite VIII. I. Abdominal sternite VIII.