Praocis (Praocis) quadrisulcata Germain, 1855

Flores, Gustavo E. & Pizarro-Araya, Jaime, 2012, Systematic revision of the South American genus Praocis Eschscholtz, 1829 (Coleoptera: Tenebrionidae). Part 1: Introduction and subgenus Praocis s. str., Zootaxa 3336, pp. 1-35 : 14-15

Praocis (Praocis) quadrisulcata Germain, 1855

( Figs. 12 , 27 )

Praocis quadrisulcata Germain, 1855: 399 ; Philippi, 1887: 732 (cat.); Gebien, 1910: 261 (cat.); Gebien, 1938: 398 (cat.); Blackwelder, 1945: 523 (cat.); Kulzer, 1958: 16 (rev.); Peña, 1966: 429 (cat.); Vidal & Guerrero, 2007: 73, 214; Flores, 2007: 417 (lectot.).

Redescription. Length 7.0–10.0 mm. Body, antennae and legs dark brown. Head. Clypeus and frons with round punctures each with a central seta; antennae reaching midpoint of lateral margin of pronotum; antennomere 9 wider than long, with apical tomentose sensory patches arranged in two areas close dorsally; antennomere 10 wider than antennomere 11. Thorax. Pronotum widest behind midpoint; disc glabrous, lateral quarters with fine, golden setae; punctures of disc same size as punctures of elytron; width of anterior margin not exceeding half the width of posterior margin; lateral quarters convex, dorsal surface of lateral margin bearing a tuft of long golden setae; posterior angles right, apex rounded; prosternum horizontal, with edge on anterior margin broadened below gula; prosternal process subrectangular forming a right angle, not produced backwards ( Fig. 12 ); prosternum and mesosternum with protuberances. Elytron lacking carinae, with four grooves bearing short, broad, golden, scaly setae, intervals flat, grooves wider than intervals; dorsal surface with short golden setae; the inner groove runs from apex of elytron reaching only the posterior third, not surpassing the midpoint of elytron towards anterior, parallel with the inner groove of the other elytron, the second groove runs from apex of elytron surpassing the midpoint of elytron, reaching the anterior third, the third and fourth (outer) grooves are very close together and run over lateral margin from apex of elytron reaching the base towards anterior; pseudopleuron with long setae arising on protuberances; epipleuron with short setae arising on protuberances, bearing a row of setae on the edge of anterior quarter. Legs. Ventral surface of meso– and metafemora with a row of setae on posterior edge. Inner surface of meso– and metatibiae with long, fine setae. Metatibiae straight. Male genitalia. Rods of sterna IX close to each other at basal third. Basal lamina of tegmen equal width throughout, with base concave. Lateral styles of tegmen with proximal margin ventrally bisinuate, widest at base, with setae on distal 1/5 of ventral surface. Median lobe moderate (0.75 <L/T ≤ 1.00), distally broadened, with apical aperture large and apex acute. Female genitalia. Paraprocts long (2.0 <P/C ≤ 3.0); baculi of coxite horizontal; proctigeral baculus extending proximad much beyond paraproct baculus; apicodorsal lobe of proctiger extending about ½ length of coxite.

Type material. Lectotype: [ Chile] [ quadrisulcata / P. G. ined. (handwritten by Germain)] [ Colección/ P. Germain ] [ Sintipo ] [ Chile M.N.H.N./ Tipo Nº 596] [Lectotypus / Praocis quadrisulcata / Germain , 1855/ Des. G. Flores 2006] ( MNNC ).

Note: Flores (2007: 417) designated lectotype.

Other material examined. CHILE. Valparaíso Region: San Antonio Province: Algarrobo , 27.xi.1950, L.E. Peña, 4 ( FMNH), 27.vi.1953, L.E. Peña, 1 ( FMNH), 26.xi.1950, L.E. Peña, 9 ( IADIZA), El Tabo, 1.i.1968, O´ Brien , 1 ( FMNH), 15.iii.1968, L.E. Peña, 1 ( FMNH). Libertador General Bernardo O'Higgins Region: Colchagua Province : Las Palmas de Cocalán , 28.xi.1967, L.E. Peña, 1 ( FMNH) .

Geographic distribution. Chile (Valparaíso Region: San Antonio Province to Libertador General Bernardo O'Higgins Region: Colchagua Province), in the Santiago biogeographic province.

Figures

FIGURE 27. Geographical distribution of four species of Praocis (Praocis): P. (P.) costata, P. (P.) quadrisulcata, P. (P.) sanquinolenta, and P. (P.) subsulcata.

FIGURES 5 − 14. Male and female genitalia and body details of Praocis (Praocis) species. 5. Fore tibia and tarsus in anterior view of Praocis (P.) sanquinolenta. 6 − 9: Male: 6, 7. P. (P.) rufipes, dorsal and ventral views; 8, 9. P. (P.) elliptica, dorsal and ventral views. Abbreviations: bl, basal lamina of tegmen, ls, lateral styles of tegmen, ml, median lobe. 10. Ovipositor (ventral view), spiculum and internal female reproductive tract of P. (P.) hirtella. Abbreviations: c, coxite, o, oviduct, p, paraproct, s, spermatheca, sag, spermathecal accessory gland, sp, spiculum, v, vagina. 11 – 14. Prosternum and mesosternun, lateral aspect. 11. P. (P.) costata; 12. P. (P.) quadrisulcata; 13. P. (P.) elliptica; 14. P. (P.) marginata. Abbreviations: p, prosternum, m, mesosternum. Scale bars: 1 mm.