Panolcus filirostris Anderson, 2024

Anderson, Robert S., 2024, A second species of the genus Panolcus Gerstaecker 1860 (Coleoptera: Curculionidae: Molytinae: Cryptorhynchini) from French Guiana and Suriname with taxonomic changes in Cryptorhynchini, Zootaxa 5437 (1), pp. 15-20 : 16-17

Panolcus filirostris Anderson , new species

http://zoobank.org/ urn:lsid:zoobank.org:act:DDF277A1-B75E-47E2-BB85-E23797285837

( Figs. 4–11 )

Diagnosis: Body length 10.8–11.0 mm in females, 9.5–9.8 mm in males, width 5.0– 5.5 mm in females, 4.8–5.0 mm in males. Rostrum in female about twice as long as elytra, apex of rostrum reaching far beyond apex of elytra (by almost length of elytra) when in repose, of male, reaching to level of posterior margin of mesocoxae. Pronotum very strongly tubulate anteriorly in female, less so in male. Femora and tibiae proportionally slenderer in both sexes (although slightly less so in male), profemora about 4 x as long as width at base, protibiae about 7–8 x as long as maximum width. Protarsus with tarsomere 1 longer than tarsomeres 2–5 in female, shorter than tarsomeres 2–5 in male. Aedeagus with lateral margins subparallel, each with acute angle (but no tooth) at point of constriction.

Specimens examined: Holotype male, labelled French Guiana: Régina, Camp Patawa , Route de Kaw , 4°32’45’’N, 52°09’14’’W, ~ 210 m, March–April 2018, G. Bittencourt-Silva, BMNH (E) 2018-150 ( BMNH). Paratypes, same data as holotype (2 males, 2 females, BMNH; 2 males, 1 female, CMNC). Suriname: Brokopondo District, Brownsburg Nature Park, Cabin Kapasi , 4.94939ºN, 55.18034ºW, 413 m, 8 April 2016, E. Rodriguez (1 male, FSCA) .

Natural history: Specimens in French Guiana were collected from a mature fruit of Duguetia surinamensis R.E. Fr. ( Annonaceae ) ( Fig. 13 ).

Figures

FIGURES 1–6. Panolcus female habitus images. 1, Panolcus scolopax, lateral; 2; Panolcus scolopax, dorsal; 3, Panolcus scolopax, ventral; 4, Panolcus filirostris, lateral; 5, Panolcus filirostris, dorsal; 6, Panolcus filirostris, ventral.

FIGURES 7–12. Panolcus male habitus and aedeagus images. 7, Panolcus filirostris habitus, lateral; 8, Panolcus filirostris habitus, dorsal; 9, Panolcus filirostris habitus, ventral; 10, Panolcus filirostris aedeagus, dorsal view; 11, Panolcus filirostris aedeagus, lateral view; 12, Panolcus scolopax aedeagus, dorsal view.

FIGURES 13–15. Panolcus filirostris host plant and Thrasyomus tumens and Eubulus uniformis head images. 13, Mature fruit of Duguetia surinamensis R.E. Fr. (Annonaceae) from which Panolcus filirostris specimens were collected (photograph by G. Bittencourt-Silva); 14, Thrasyomus tumens head, frontal, male; 15, Eubulus uniformis head, frontal, female.