Neapion (Neotropion) cleidecostae, Sousa, 2020

Neapion (Neotropion) cleidecostae sp. nov.

( Figs. 1 View Figures 1-3 , 4, 5, 6 View Figures 4-6 )

Type material: Holotype ♂ ( DZUP): [red border printed label] dissected, glued on paper triangle, with genitalia placed in a separate microvial: Paraguay, Misiones: Villa Florida , 17.IV.1988, Col R.C. Aguilar, Apion sp. G.H. Rosado Neto det. 1997.

Diagnosis: This new species resembles N. (Neotropion) marquesae ( Figs. 2-3 View Figures 1-3 ) in the shape of the head, antennae, thorax, and the position of the raised areas on the elytra: two in interval 2, four in interval 4 and one in each posterior ⅓ of intervals 5 and 6; in North American N. (Neotropion) clarki , two raised areas in posterior ½ of intervals 2, 4, and 6 and one at the basal ⅓ of intervals 3 and 5. Furthermore, N. (Neotropion) cleidecostae sp. nov., differs from N. (Neotropion) marquesae by characteristics given in the key.

Description: Similar to N. (Neotropion) marquesae ( c.f., De Sousa & Ribeiro-Costa, 2018), except as described below.

Measurements (in mm), male holotype: Length 2.8, rostrum length 0.76, maximum width 0.32, pronotum length 0.80 and maximum width 0.96, elytra length 1.8 and maximum width 1.16. Integument black dorsally, antennae dark brown and abdomen black. Vestiture on rostrum, head, pronotum disc and elytra of thin, dark tan or brown scales; pronotal lateral scales thicker and light tan; scales on legs off-white and brown; scales around the eyes, mesanepisternum, mesepimeron, metanepisternum and coxae off-white.

Rostrum: Mesorostrum about 1.6 times wider than apex.

Male terminalia and genitalia ( Figs. 4‑6 View Figures 4-6 ): Manubrium ca. 1.6 times longer than arm ( Fig.5 View Figures 4-6 ); temones about 0.32 times pedon length;internal sac with two long (0.54 mm) parallel sclerites, obliquely joined ( Fig. 4 View Figures 4-6 ), shaped like a tuning-fork; tegmen ( Fig. 5 View Figures 4-6 ) with parameroid lobes shorter in the membranous area; fenestrae as wide as long, separated by about 0.3 times fenestral width; prostegium protruding medially, rounded; manubrium widened apically.

Female: Unknown.

Etymology: This species is named in honor of Dr. Cleide Costa, Museu de Zoologia, Universidade de São Paulo, who first encouraged the study of immature beetles in Brazil.The specific epithet is a noun in the genitive case.

The new species is placed below in the key to South American species of Neapion (Neotropion) adapted from De Sousa & Ribeiro-Costa (2018):

1. Vestiture dense ( Figs.1-3 View Figures 1-3 ); elytral intervals convex, with raised areas in intervals 2,4, 5, 6.............................................................................1A

— Vestiture sparse;elytral intervals flat,without raised areas................... 2

1A. Elytra with vestiture heterogeneously colored, basal half with light tan scales,posterior half with one macula short,oblique,with dark scales from interval 1 to 2;internal sac with two long (0.52 mm) and parallel sclerites, transversely joined; prostegium protruding medially in a squared shape...................................................................................... ................. N.(Neotropion) marquesae De Sousa & Ribeiro-Costa,2018

— Elytra with vestiture homogeneously colored, dark tan and/or brown scales, without macula; internal sac with two long (0.54 mm) and parallel sclerites, obliquely joined ( Fig. 4 View Figures 4-6 ), prostegium protruding medially in a rounded shape........ N. (Neotropion) cleidecostae sp.nov.