Scymnus (Pullus) loewii Mulsant, 1850

Nestor-Arriola, Jorge I., Clark, Shawn M. & Niño-Maldonado, Santiago, 2022, Taxonomic and Distributional Notes on the Genus Scymnus Kugelann, 1794 (Coleoptera: Coccinellidae) in Mexico, The Coleopterists Bulletin 76 (3), pp. 299-328 : 309-310

Scymnus (Pullus) loewii Mulsant, 1850 Figs. 25–27

Scymnus (Pullus) loewii Mulsant 1850: 980 . Gorham 1897: 227. Korschefsky 1931: 161. Leng and Mutchler 1933: 87. Chapin 1974: 27. Gordon 1976: 119. Gordon 1985: 189. Booth and Pope 1989: 358. Nestor-Arriola et al. 2008: 107. Rodríguez-Vélez et al. 2019a: 248. Zaragoza-Caballero et al. 2019: 66.

Scymnus loewii : Crotch 1874b: 271. Blackwelder 1945: 444. Juárez-Monroy 1986: 25. Ruíz and Coronado 2002: 110. Flores-Mejía and Salas-Araiza 2004: 15. García-Coapio 2005: 52. Rojas-Rivera 2006:27.Marín-Jarillo and Bújanos-MuÑiz 2008: 25. López-PiÑa and Ponce-Saavedra 2017: 22. Rodríguez-Vélez et al. 2016: 105.

Scymnus laevii : Dugés 1896: 104.

Scymnus cinctus LeConte 1852: 137 . Crotch 1874b: 263. Horn 1895: 99.

Scymnus (Pullus) cinctus : Gorham 1897: 227. Casey 1899: 152. Wilson 1927: 169. Leng 1920: 214. Korschefsky 1931: 156. Wingo 1952: 30.

Scymnus suturalis LeConte 1852: 138 (not Thunberg 1795). Crotch 1874b: 264.

Scymnus lecontei Crotch 1874b: 264 . Horn 1895: 99.

Scymnus (Pullus) lecontei : Gorham 1897: 227. Casey 1899: 152. Leng 1920: 214. Korschefsky 1931: 161.

Scymnus flebilis Horn 1895: 100 .

Scymnus (Pullus) flebilis : Casey 1899: 160. Leng 1920: 213. Korschefsky 1931: 158. Gordon 1976: 120.

Scymnus (Pullus) sarpedon Casey 1899: 152 . Leng 1920: 213. Korschefsky 1931: 165. Gordon 1976: 120.

Scymnus (Pullus) nubes Casey 1899: 151 . Leng 1920: 213. Korschefsky 1931: 163. Gordon 1976: 120.

Scymnus scotti Nunenmacher 1934: 17 . Gordon 1976: 120.

Diagnosis: Length 1.8 to 2.4 mm; width 1.0 to 1.7 mm. Dorsal color largely black to dark brown; head pale brown to orange; pronotum with lateral and anterior margins pale brown; elytra usually with posterior and lateral margins pale brown, except for humeral calli. Ventral color black to dark brown, except legs, antennae and mouthparts orange brown. Males with impunctate, triangular area at center of first ventrite; fifth ventrite slightly emarginate; sixth ventrite truncate, slightly depressed. Male genitalia with long, narrow parameres; penis guide wide, with narrow apex ( Figs. 25, 26 ); penis curved in basal 2/3, straight and slightly narrow in apical 1/3 ( Fig. 27 ).

Material Examined: More than 90 specimens ( CIUM, FIC) .

Distribution: Almost all the Americas ( González 2015; Gordon 1976, 1985, 2000). In Mexico, this species has been collected in the states of Aguascalientes, Baja California Norte, Chihuahua, Ciudad de México, Coahuila, Colima, Durango, Guanajuato, Guerrero, México (state), Michoacán, Morelos, Nuevo León, Sonora, Tamaulipas and Veracruz ( Dugés 1896; Flores-Mejía and Salas-Araiza 2004; García-Coapio 2005; Gorham 1897; Juárez-Monroy 1986; Lomelí-Flores et al. 2001; López-PiÑa and Ponce-Saavedra 2017; Marín-Jarillo and Bújanos-MuÑiz 2008; Nestor-Arriola et al. 2008; Pérez-Ávila 2016; Rodríguez-Vélez et al. 2016, 2019a; Rojas-Rivera 2006; Ruíz and Coronado 2002; Zaragoza-Caballero et al. 2019).

Biology: In Mexico, this species has been collected in the biomes of high evergreen forest, deciduous forest, high scrub, gallery forest, mesophilic forest, oak forest and evergreen forest with oak. It has been collected on Psidium guajava L. ( Myrtaceae ), Vachellia spp. , Vachellia farnesiana (L.) Willd et Arn, Allium sativum L.( Amaryllidaceae ), Opuntia sp. ( Cactaceae ), Medicago sativa L. ( Fabaceae ), Phaseolus vulgaris L. ( Fabaceae ), Nerium oleander L. ( Apocynaceae ) and Ipomoea arborescens (Humb. et Bonpl. ex Willd) G. Don ( Convolvulaceae ). It has been recorded preying on Melanaphis sacchari ( Rodríguez-Vélez et al. 2016) , Dactylopius sp. ( Hemiptera : Dactylopiidae ) (Marín-Jarillo and Bújanos-MuÑiz 2008), and several aphid species on sorghum and barley crops ( Lomelí-Flores et al. 2001).

Figures

Figs. 22–27. Scymnus spp., male genitalia (figures are not to same scale). S. gilae: 22) Tegmen, lateral view;