Lincus punctatus ( Dallas, 1851 ) Campos & Roell, 2018

Campos, Luiz Alexandre & Roell, Talita, 2018, Nomenclatural changes in Ochlerini (Hemiptera: Heteroptera: Pentatomidae: Discocephalinae), Zootaxa 4434 (1), pp. 184-192 : 188

Lincus punctatus ( Dallas, 1851) , NEW COMBINATION

Ochlerus punctatus Dallas, 1851: 157 –158. NEW SYNONYMY

Phereclus punctatus: Stål (1867: 524) ; Stål (1872: 14); Kirkaldy (1909: 186); Campos & Grazia (2006: 154); Grazia et. al. (2015: 719).

Material examined. COLOMBIA, male syntype ( Fig. 5 ), labels: “47 71”; “ Colombia ”; “7. Ochlerus punctatus ,”; “ BRIT. MUS. TYPE No. HEM. 696”; “a”; “ Type ”; “ ♂ ”; “ SYNTYPE ”; “ NHMUK 010592531”

Comments. After examining the syntype of O. punctatus ( Fig. 5 ) we conclude that this species does not present the common characteristics of Ochlerus Spinola, 1837 (eyes large, labium arising before the imaginary plane bisecting head at anterior limit of eyes, scutellum long and broad subapically, little longer than corium), or of Phereclus (labium arising before the imaginary plane bisecting head at anterior limit of eyes, second labial segment attaining mesocoxae, one half of basal antennal segment protruding beyond apex of head) ( Rolston 1992). We propose transferring O. punctatus to Lincus Stål, 1867 , because this species presents notable pronotal lobes (although short, similar as in L. tumidifrons Rolston, 1983 and L. varius Rolston, 1983 ) ( Fig. 5D ), the ventral rim of pygophore deeply and broadly emarginate ( Fig. 5F ), the male proctiger large, well protruded beyond the posterior pygophoral margin, and the parameres not visible within the pygophore ( Figs. 5F, G ) ( Rolston 1983). Ochlerus punctatus keys to L. varius in Rolston’s key for the species of Lincus ( Rolston 1983) , but L. varius has brownish yellow calloused bands along the lateral margins of abdomen ( Rolston 1983), absent in O. punctatus , and the proctiger is truncate at apex in L. varius while triangular in O. punctatus . We recognize O. punctatus as pertaining to the group of species whose males bear broad and posteriorly projected proctiger (“duck bill shaped” sensu Rolston 1983), and it can be differentiated from the other species of this group by the subtriangular apex of the proctiger ( Figs. 5F, G ). Besides that, O. punctatus could be included in the “little eyes” Rolston’s group of convenience (along with L. hebes Rolston, 1989 , L. armiger Breddin, 1908 , L. discessus ( Distant, 1900) , L. leviventris Rolston, 1983 , L. machus Rolston, 1983 , L. modicus Rolston, 1983 , L. repizcus Rolston, 1983 , and L. varius ), differentiated from L. armiger and L. hebes by the much smaller pronotal lobes ( Rolston 1983; 1989), and from L. discessus , L. manchus , L. modicus , and L. repizcus by the proctiger projected. Lastly, as the male of L. leviventris is unknown, O. punctatus can be differentiated from this species by the acute apices of pronotal lobes (obtuse in L. leviventris ), and by the abdominal venter yellowish with many brown punctures (almost uniformly dark in L. leviventris ) ( Rolston 1983).

Figures

FIGURE 5. Lincus punctatus (Dallas, 1851). Syntype male of Ochlerus punctatus deposited in the BMNH, London. A, B, C, D, E, F, G; Labels, dorsal, ventral, head and pronotum, lateral view, pygophore in ventroposterior view, and pygophore in dorsal view respectively. Scale bars = 4 mm.