MacrodactYlini, Kirby, 1837

Hernández, Benjamín, Rivera-Rodríguez, Diana María, González-Leal, Ivonne & Rodríguez, William David, 2024, Records of Scarab Beetles (Coleoptera: Scarabaeidae) on Blackberry Plants (Rubus ulmifolius Schott; Rosaceae) in Western Mexico, The Coleopterists Bulletin 78 (2), pp. 296-299 : 296-299

MacrodactYlini KirbY, 1897 ParanOmaLa dOnOvani (Stephens, 1830) ( Fig. 5 ).

Distribution: Mexico: Chiapas, Colima, Jalisco, MacrOdactyLUs mexicanUs Burmeister, 1855 Morelos, Oaxaca, and Veracruz. Little is known ( Fig. 2 ). Distribution: Mexico: Oaxaca, Puebla, about the biology of this species; adults have been Veracruz, Estado de México, Ciudad de México, reported in maize crops, and it has also been col- MichoacÁn, Jalisco, Durango, Morelos, Hidalgo, lected at light (AlcÁzar-Ruiz et al. 2003; Mateos- Tlaxcala, Querétaro, Zacatecas, Coahuila, and Baja Escudero et al. 2021). This is the first record of the California Norte, with a new state record for species on blackberry. One individual female was Colima. The species has a wide range of host plants, collected on flowers.

including significant crops such as maize ( Poaceae ), ParanOmaLa cincta (SaY, 1835) ( Fig. 6 ). Districhili peppers ( Solanaceae ), beans ( Fabaceae ), black- bution: Chiapas, Colima, Guerrero, Hidalgo, Jalisco, berry, and raspberry ( Rosaceae ), among others Estado de México, MichoacÁn, Morelos, Nayarit, ( Aragón-SÁnchez et al. 2021; Arce-Pérez and Oaxaca, Puebla, Quintana Roo, Sinaloa, Tabasco, Morón 2000). Adults feed on flowers and foliage, and Veracruz. It is a very common species that in- and larvae feed on roots and humus (Morón et al. habits various ecosystems, except for arid zones. 1997). In the study site, 35 individuals were collected. Adults feed on flowers and bushes of Poaceae and The vast majority were observed on leaves ( Fig. 8 ) Malvaceae . The larvae feed on humus or roots of but a small proportion were observed on flowers. several crops, including maize. This is the first This scarab species had the highest number of record of the species on blackberry. One individual sightings. female was collected on flowers.

Figures

Figs. 1–9. Scarab beetles collected in blackberry crops at Colima, Mexico. 1) Euphoria basalis; 2) Macrodactylus mexicanus; 3) Isonychus arizonensis; 4) Strigoderma sulcipennis; 5) Paranomala donovani; 6) P. cincta; 7) S. sulcipennis feeding on blackberry flower; 8) M. mexicanus feeding on blackberry leaves; 9) View of blackberry cultivation. Scale bars are 1 mm.