Neapion (Neotropion) diringsi, Sousa & Ribeiro-Costa, 2018

Neapion (Neotropion) diringsi sp. n.

( Figs. 15–22 View FIGURES 15–19 View FIGURES 20–22 )

Diagnosis. Differs from others in subgenus Neotropion by the conspicuous Vestiture off-white to creamy, scales thin and sparse dorsally, denser in the mesanepisternum, mesepimeron, metanepisternum and latero-dorsal posterior region of prosternum, interVals 1-4 of posterior 1/2 of elytra with spots; elytral interVals flat.

Description. Characters not commented on below are similar to the preVious species.

Measurements: male holotype (in mm): length 2.60; rostrum length 0.80, maximum width 0.24; pronotum length 0.76 and maximum width 0.92; elytra length 1.76 and maximum width 1.32.

Integument dorsum, antennae and abdomen dark brown, legs light brown to reddish brown.

Vestiture off-white to creamy, scales thin and sparse dorsally, denser in the mesanepisternum, mesepimeron, metanepisternum and latero-dorsal posterior region of prosternum, interVals 1-4 of posterior 1/2 of elytra with spots ( Fig. 15 View FIGURES 15–19 ).

Rostrum slightly curVed, robust, in side View flat Ventrally at mesorostral leVel ( Fig. 16 View FIGURES 15–19 ); in dorsal View length about 3.2 times maximum width; 1.2 times pronotum length at midline; mesorostrum about 1.7 times larger than apex of prorostrum.

Head with frons flat. Antennae inserted at basal 0.27 of rostrum length; scape length 0.8 times mesorostral width, 4.5 times as long as wide, 0.64 times as long as club length. Pedicel as long as wide, as long as desmomeres 1+2, desmomere 1-6 as long as wide. Club oblong, compact, 3.5 times as long as wide, sutures marked.

Thorax. Pronotum length about 0.84 times width, base width 1.2 times apex width; outline in side View and pronotal disc flat; basal foVea absent. Scutellum about 1.8 times as long as wide, posteriorly forming slender, awlshaped structure with apex slightly curVed upwards when Viewed laterally. Elytra length 1.4 times width. Mesocoxae separated by about 0.15 times mesocoxal diameter. FoVea at posterior margin of metasternum.

Abdomen. Abdominal Ventrites with midline length ratios: 35– 32–7–9–20.

Male terminalia and genitalia. Manubrium ca. 1.3 times arm length ( Fig. 17 View FIGURES 15–19 ). Pedon with apical plate rounded in dorsal View; temones length about 0.31 times pedon length; internal sac with two long (680 µm) and parallel sclerites, transVersely joined ( Fig. 18 View FIGURES 15–19 ), forming a ‘tuning-fork’ shape. Tegmen ( Fig. 19 View FIGURES 15–19 ) with parameroid lobes sclerotized, each side with 6 macrochaetae and 7 sensilla in front of each fenestra; fenestrae separated by about 0.7 times fenestrae width; prostegium strongly protruding, medially bifid.

Female ( Figs. 15, 16 View FIGURES 15–19 ). Similar to male, with some differences in body length and width, Vestiture denser in some specimens.

Measurements: female paratypes (in mm): length 2.60–2.76; rostrum length 0.92–0.96, maximum width 0.26–0.28; pronotum length 0.72–0.80 and maximum width 0.92–0.96; elytra length 1.80–1.96 and maximum width 1.32–1.40.

Female genitalia. OVipositor ( Fig. 20 View FIGURES 20–22 ): Coxites length about 4.6 times width, with microchaetae. Styli subcylindrical, length about 1.5 times width, with 5 macrochaetae. Spermatheca ( Fig. 21 View FIGURES 20–22 ) C-shaped, no nodulus or ramus; cornu as broad as corpus. Spiculum Ventrale ( Fig. 22 View FIGURES 20–22 ) elongate, straight, apical plate membranous and setiferous.

Type Material. Holotype [red border printed label], male dissected, glued on paper triangle, with genitalia in a separate microVial, Brazil, Itacoatiara, Amazonas, Dirings , janeiro de 1965 (written on the back of the label) ( MZUSP) . Paratype [white printed label]: 4 females, 1 dissected with genitalia in a separate microVial (MZUSP), glued on paper triangle, same holotype, 1 female (MZUSP), glued on paper triangle, same holotype data except III/ 1964.

Material examined. One male (not paratype) dissected, without head, glued on paper triangle, with genitalia in a separate microVial, Brazil, Itacoatiara, Amazonas, Dirings , janeiro de 1965 (written on the back of the label) ( MZUSP).

Etymology. This species is named in honor of Ricardo Von Diringshofen, or Dirings as he liked to be called and signed, the collector of the specimens who was an enthusiast that collected a diVersity of insects which are now in the Museu de Zoologia da UniVersidade de São Paulo (MZSP), Brazil. The specific epithet is a noun in the genitiVe case.