Ripiphoridae, Laporte, 1840

Barahona-Segovia, Rodrigo M., Puiggros, Andrés, Varela-Varela, Ricardo A., Valdés-Guzmán, Vicente, Ramírez-Cuadros, Andrés & Pañinao-Monsálvez, Laura, 2022, Updated catalog of the Chilean wedge-shaped beetles (Coleoptera: Ripiphoridae) with the first records of Macrosiagon flavipennis (LeConte) in Chile, Papéis Avulsos de Zoologia 62, pp. 1-9 : 2

Key to Chilean Ripiphoridae species

1. Body length exceeds 1 cm ( Figs. 1-2 ); pronotum entirely black with medial protuberance distally acuminate at posterior margin; elytra black with a transverse yellow stripe at anterior third ( Figs.1-4 )......... .......................................................... Macrosiagon flavipennis LeConte

— Total body length, less than 1 cm; pronotum brownish-reddish with black marks, without medial protuberance in the posterior margin; elytra generally reddish or brownish-red with some species with dark areas on humeral and apical parts of elytra........................................2

2. Frons and vertex strongly crenulate; vertex mostly pilose; elytra short, covering 1/3 of the total length of abdomen, most part of wings not completely covered by elytra; fore and middle legs completely brownish-red ( Figs.11-12 )................. Ripiphorus valdivianus (Philippi)

— Frons and vertex scarcely crenulate or smooth; vertex scarcely pilose or glabrous; abdomen and wings almost entirely covered by elytra; fore and middle legs mostly black.............................................................3

3. Elytra uniformly brownish-red except humeral part; basal part of metatibiae and first tarsomere of metatarsus generally brownish-red ( Figs.7-9 )............................................ Macrosiagon gayi (Gerstaecker)

— Elytra mostly brownish-red, with individuals ranging from black markings on apical and basal area to completely yellow-orange; legs mostly brownish ................................... Macrosiagon vittata (Erichson)

Figures

Figures 1-6. Macrosiagon flavipennis (LeConte,1866): (1) dorsal habitus,male;(2) lateral habitus,male;(3-4) visiting Lantana sp.,female;(5) urban gardenwhere the femalewas found in Arica city and (6) individuals collected of Ripiphorus valdivianus (Philippi,1861),M. flavipennis and Macrosiagon gayi (Gerstaecker,1855b). Photos by Andrés Puigross and Andrés Ramírez-Cuadros.

Figures 11-12. Ripiphorus valdivianus (Philippi, 1861): (11) frontal view and (12) lateral habitus. Photos by Vicente Valdés-Guzmán and Ricardo Varela-Varela, respectively.

Figures7-10.Macrosiagon gayi(Gerstäecker,1855) insitu: (7-8)dorsal habitus,(9)maleand (10)femaleinlateral habitus.Photos 7-8 and10byVicenteVillablanca; photo 9 byJosé Ignacio Cabezas Martínez.