Scymnus (Pullus) louisianae Chapin, 1973

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 : 310-311

Scymnus (Pullus) louisianae Chapin, 1973 Figs. 28–30

Scymnus (Pullus) louisianae Chapin 1973: 1071 . Chapin 1974: 24. Gordon 1976: 115. Gordon 1985: 187.

Scymnus louisianae : Ruíz and Coronado 2002: 110. Rodríguez-Vélez et al. 2016: 105.

Diagnosis: Length 2.0 to 2.6 mm; width 1.5 to 1.8 mm. Dorsal color largely black; head yellow to orange; pronotum orange, except with basal black macula; elytra with apical eighth yellow to orange. Ventral color black, except legs, mouthparts and last three ventrites yellow. Males with first ventrite densely punctate on central part; fifth ventrite emarginate; sixth ventrite emarginate, depressed. Male genitalia with dorsal projections on parameres ( Fig. 28 ); penis guide wide, short, asymmetrical ( Fig. 29 ); penis robust at apical two-thirds ( Fig. 30 ).

Material Examined: More than 150 specimens ( FIC, CIUM) .

Distribution: United States of America and Mexico. In Mexico, this species has previously been collected from the states of Coahuila, Morelos and Tamaulipas ( Rodríguez-Vélez et al. 2016; Ruíz and Coronado 2002; Vanegas-Rico et al. 2010).

New Localities: HIDALGO: (16♀, 13♂) Huazalingo ( FIC), (1♀, 2♂) Huejutla ( FIC), (1♂) Molango ( FIC) . MICHOACÁN: (1♀) San Nicolas Simirao ( FIC) . QUERÉTARO: (1♀) Pinal de Amoles ( FIC) . VERACRUZ: (1♀) Huayacocotla ( FIC), (1♂) Xalapa ( CIUM) .

Biology: This species has been collected near colonies of Dactylopius opuntiae (Cockerell) on Opuntia ficus-indica (L.) Miller, but direct predation has been not recorded ( Vanegas-Rico et al. 2010).

29) Tegmen, ventral view; 30) Penis. S. pulvinatus : 31) Tegmen, lateral view; 32) Tegmen, ventral view; 33) Penis.

Figures

Figs. 28–33. Scymnus spp., male genitalia (figures are not to same scale). S. louisianae: 28) Tegmen, lateral view;