Palliolatrix silacea Prena

Prena, Jens, 2009, The West Indian Peridinetini (Coleoptera: Curculionidae: Baridinae), Zootaxa 2210, pp. 51-64 : 54

Palliolatrix silacea Prena sp. n.

( Figs. 3, 5 , 13 , 17 )

Description. Total length 4.6 mm, standard length 4.4 mm (n=1). Integument black, antenna and tibial spine reddish brown; basic vestiture of inconspicuous, black scales; imbricate, orange scales in well-defined patches on pronotum, elytra, metasternum and ventrite 2 ( Figs. 3, 5 ). Rostrum 0.80× as long as pronotum, middle section more curved, basal half slightly tumid dorsomedially, portion distal to antennal insertion 0.43× as long as rostrum. Pronotum 0.96× as long as wide, sides weakly rounded, front projected. Elytra 1.56× longer than wide, humeri 1.33× wider than pronotum; striae subtle, strial punctures mostly inconspicuous; interstria 3 not swollen on disk, preapical callus weak. Legs slender, femora clavate and with ventral tooth, tibia with ventral margin slightly bisinuate, tarsal claws subconnate at base. Male with ventrite 5 depressed; apex of aedeagus round, fused medially, lateral portions membranous ( Fig. 13 ); internal sac with basal sclerite flagelliform, approximately as long as apodemes.

Material examined. Holotype male (dissected), labeled: “ ST. VINCENT, St./ Andrew P[arish], Vermont/ Nat[ure] Tr[ail], IX-1-1991 / C.W & L.B. O’Brien”, “ HOLOTYPE / Palliolatrix / silacea Prena ” ( CASC, longterm loan to CWOB).

Distribution. The species is known only from one specimen, collected in Saint Vincent & the Grenadines ( Fig. 17 ).

Plant associations. Unknown.

Specific epithet. The name is a regular Latin adjective meaning ochreous.

Figures

FIGURES 1 – 5. Dorsal and lateral habitus of Palliolatrix species. 1, P. i n s i g n i s, Guadeloupe; 2, 4, P. lateropicta, Dominica; 3, 5, P. silacea, St. Vincent.

FIGURES 12 – 16. Male genital structures of Palliolatrix and Peridinetus. 12 – 14, apex of aedeagus, dorsal view: 12, Palliolatrix lateropicta; 13, Palliolatrix silacea; 14, Peridinetus fuscosignum. 15 – 16, basal sclerite of internal sac: 15, Palliolatrix lateropicta; 16, Peridinetus fuscosignum.

FIGURES 17 – 19. Maps of the Lesser and Greater Antilles showing the distribution of Palliolatrix and Peridinetus species. 17, Palliolatrix insignis (2), P. lateropicta (3) and P. s il a c ea (4); 18, Peridinetus concentricus, P. poeyi and P. sexguttatus; 19, Peridinetus decipiens, P. fuscosignum and P. roeselii.