Arthrobrachus rufitarsis Philippi & Philippi, 1864

Estrada, Patricia, 2016, Species of the genus Arthrobrachus Solier, 1849 (Coleoptera: Melyridae) distributed to the East of the Andes, Zootaxa 4092 (3), pp. 371-387 : 383

Arthrobrachus rufitarsis Philippi & Philippi, 1864

( Figure 8 )

Arthrobrachus germaini Pic, 1919: 10 ; Estrada & Solervicens 1999: 52

Arthrobrachus minutus Pic, 1919: 10 ; Estrada & Solervicens 1999: 52

Arthrobrachus obscuripes Pic, 1927: 43 (Type locality: Fives Lille, Santa Fé), n. syn.

The examination of the genitalia and external morphology of the lectotype of Arthrobrachus obscuripes Pic, 1927 (MACN) allowed to establish its synonymy with Arthrobrachus rufitarsis Philippi & Philippi, 1864 , a species originally described from Chile. Lectotype designated and described by Estrada & Solervicens (1999).

Diagnosis. Body dark-testaceous; antennae with five dilated preapical antennomeres ( Fig. 8 g); pronotum with an additional carina subparallel to the lateral carina; male ventrite number 6 divided in two separated plates; tegmen without dorsal flange at the base of the parameres and with a great oblongous aperture, tegminal arms thick, first subparalell and after curved towards the apodeme, from a lateral view strongly bent downward near the apodeme ( Fig. 8 a–c); median lobe almost straight, with narrow basal flection area ( Fig. 8 d–f).

Distribution. ARGENTINA: provinces of Santa Fé, Neuquén and Río Negro. CHILE: between provinces of Valparaíso and Valdivia ( Fig. 10 ).

Figures

FIGURE 8. Male genitalia of Arthrobrachus rufitarsis. Tegmen and parameres: a: dorsal view; b: ventral view; c: lateral view; Median lobe: d: dorsal view; e: ventral view; f: lateral view; Antenna: g. Scale 0.5 mm.

FIGURE 10. Geographic distributions of: A. antonioi n. sp, red line area; A. armandoi n. sp. dark blue solid area; A. eloisae n. sp. green solid area; A. flavomarginatus, light green horizontal lines area; A. nigromaculatus, blue vertical lines area; A. ruftarsis, light blue solid area; A. solervicensi n. sp. dark cyan horizontal lines area.