Dichotomius ( Cephagonus ) clypeatus ( Luederwaldt 1929 )

3.5.: Dichotomius ( Cephagonus) clypeatus ( Luederwaldt 1929) View in CoL ( Figure 32 View Figure 32 (a-e))

Pinotus ( Cephagonus) bicuspis var. clypeatus Luederwaldt 1929 ı p. 129 (description) Pinotus ( Cephagonus) clypeatus ı Luederwaldt 1936 ı p. 214

Diagnosis. this species is separated from other in the group by the following combined characters: males pronotal disc with a central pair of tubercles on anterior portion; elytral striae and punctures strongly impressed (as in D. ingens and D. arnaudi ); males cephalic horn or tubercle rounded apically (as D. bicuspis ); genae borders divergentı posterior angle rounded; paramera lacking basal nor longitudinal excavations and sides of elytra subparallel in dorsal view (as in D. arnaudi ).

● HOLOTYPE (male) ( Figure 32 View Figure 32 (e)): Oxapampa Peru {whiteı printed}/ Pinotus quadraticeps Felsche {whiteı handwritten}/Muséum Paris 1936 Coll. A. Boucomont {white with black marginsı printed}/ Pinotus bicuspis Har. var. clypeatus . Clypeatus nov. var. Luederwaldt 1931 {whiteı handwritten} [MNHN].

Non-type material. ARGENTINA: Salta: Sierra Tartagal. 35 km N Tartagal. 22³19 ʹ 36 ʹ ’ Sı 63³51 ʹ 00 ʹ ’ Wı 874 m. 14.xi.2006. Berger-Dostal [1 Ƌ at CEMT]; BOLIVIA: Santa Cruz: Florida.

18³08 ’ Sı 63³48 ʹ Wı 1730m. 19-xi-2006. WD Edmonds & P Reyes [1 Ƌı 1 ♀ at CEMT]; Tarija. Entre Riosı Quebrada del Abra. 25-ii-1998. Ayzama & F Guerra [1 Ƌı 1 ♀ at CEMT].

Redescription. colour: blackı shiny. Head: fronto-clypealı genal and inter-ocular surfaces smooth. Gena borders not parallel. Cephalic carina conical with rounded apex. Pronotum: borders smoothı not serrated. Pronotal disc shinyı lacking punctures and delimited anteriorly by two central weak tubercles. Metasternum: sides and margins of anterior lobe covered by long hair. Anterior portion of anterior lobe glabrous. Setigerous punctures evenly spaced at sides. Elytra: sub-parallel. Striae deeply impressed having fine weakly impressed punctures spaced by one to three times their diameter. Interstriae convexı lacking microsculpture with very fine puncture (20 x). Abdomen: sides of each ventrite excavated. 1st ventrite with a single row of hair along anterior margin. Each side of ventrites 2 to 5 with groups of 1 – 5 ocelatte setigerous punctures. Puncture of each ventrite interrupted medially as well as groove along the posterior margin of sixth ventrite. Aedeagus ( Figure 32 View Figure 32 (b-d)). Dorsallyı paramere apexes roundedı convergent; longitudinal and basal excavations lacking; membranous portion taking more than 2/3 of dorsal surface. Laterallyı subtle declivity from basis towards apex. Ventrallyı subgenital plate widely emarginate at apex and rounded at basis.

Morphological variation. Male BL: 13 – 15 mmı PW: 7 – 9 mm. Female BL: 16 mmı PW: 6 mm and distinguished from males as follows: Head: dorsal surface striated. Clypeo-genal junction very obtuseı rounded. Cephalic carina absent forming at most a central weak knob. Pronotum: simply convex. Elytra: interstriae microsculpture chagrinated. Abdomen: sixth ventrite three times larger than fifthı pygidium swollenı lacking modifications at medial portion.

Distribution. Argentina ( Salta)ı Bolivia (Santa Cruzı Tarija) and Peru (Oxapampaı type locality)