Pantomorus albosignatus, Boheman in Schoenherr, 1840

Lanteri, Analia A. & Rio, Maria Guadalupe Del, 2020, Revision of the Pantomorus albosignatus species group (Coleoptera: Curculionidae Entiminae) from Mexico and Central America, Zootaxa 4819 (3), pp. 557-570 : 559

Key to species of Pantomorus albosignatus species group

1 Eyes slightly to moderately protruding; pronotum subcylindrical, disc feebly punctate, posterior margin straight to slightly curved, not to feebly beveled, posterolateral angles not produced; elytra moderately short, apical declivity feeble to moderately abrupt.............................................................................................. 2

- Eyes strongly protruding; pronotum truncate-conical, disc strongly punctate, posterior margin slightly bisinuate and beveled, posterolateral angles produced, directed outwards; elytra short and broad, apical declivity strongly abrupt................................................................. Pantomorus andersoni sp. n. ( Figs. 3, 6, 8 ) ( Mexico: Guerrero)

2 Elytra lacking humeri; antennae usually broad, funicle segment 2 equal to slightly longer than segment 1; vestiture usually with characteristic pattern of whitish interrupted stripes or maculae on elytra; endophallus without sclerites.................. 3

- Elytra with vestigial humeri; antennae slender; funicle segment 2 twice as long as segment 1; vestiture usually uniform and lacking characteristic pattern, except for a paler stripe along suture of elytra; endophallus with sclerites.................................................................................. Pantomorus crinitus (Boheman) ( Figs. 9–14 ) ( El Salvador, Guatemala and Mexico: Chiapas, Oaxaca and Veracruz)

3 Eyes moderately protruding; antennae stout; funicle segment 2 about as long as segment 1; base of elytra thickened; disc of elytra strongly convex and much wider relative to maximum width of pronotum (WE/WP 1.50–1.60× in females); apex of elytra rounded; apical declivity moderately abrupt; sides of pronotum slightly curved in both sexes...................................................................................... Pantomorus albosignatus Boheman ( Figs. 1, 4, 7 ) ( Mexico: Aguascalientes, Chihuahua, Coahuila, Durango, Federal District , Guanajuato, Hidalgo, Nuevo León, Oaxaca, Puebla, Querétaro, San Luis Potos, Veracruz and Zacatecas) .

- Eyes slightly protruding; antennae slender, funicle segment 2 longer than segment 1; base of elytra not thickened; disc of elytra moderately convex and less wider relative to maximum width of pronotum (WE/WP 1.30–1.40×); apex of elytra subacute; apical declivity feeble; sides of pronotum moderately to strongly curved in males................................................................................ Pantomorus parvulus Sharp ( Figs. 2, 5 ) ( Mexico: Oaxaca and Veracruz)

Figures

FIGURES. 1–8. Pantomorus albosignatus species group. 1, P. albosignatus Boheman, female, dorsal view; 2, P. parvulus Sharp, female, dorsal view; 3, P. andersoni Lanteri & del Río sp. nov., holotype female, dorsal view; 4, P. albosignatus, male, dorsal view; 5, P. parvulus, paralectotype male, dorsal view; 5, P. andersoni sp. nov., allotype male, dorsal view; 7, P. albosignatus, female, lateral view; 8, P. andersoni, holotype female, lateral view. Scales= 1 mm.

FIGURES. 9–14. Pantomorus albosignatus species group, P. crinitus (Boheman), variation, dorsal views. 9, P. crinitus, lectotype female; 10, P. nobilis (Boheman) (=P. crinitus), lectotype female; 11, P. crinitus, female from Tapachula, Mexico; 12, P. affinis Sharp (=P. crinitus), lectotype male; 13, P. crinitus, male; 14, P. crinitus, male from Tapachula, Mexico. Scales= 1 mm.