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

Sousa, Wesley Oliveira De & Ribeiro-Costa, Cibele Stramare, 2018, Two new Brazilian species of Neapion Alonso-Zarazaga, 1990 subgenus Neotropion Alonso-Zarazaga, 1990 with a key to South American species (Brentidae: Apioninae), Zootaxa 4402 (3), pp. 551-562 : 557-560

Neapion (Neotropion) diringsi sp. n.

( Figs. 15–22 )

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 ).

Rostrum slightly curVed, robust, in side View flat Ventrally at mesorostral leVel ( Fig. 16 ); 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 ). 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 ), forming a ‘tuning-fork’ shape. Tegmen ( Fig. 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 ). 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 ): Coxites length about 4.6 times width, with microchaetae. Styli subcylindrical, length about 1.5 times width, with 5 macrochaetae. Spermatheca ( Fig. 21 ) C-shaped, no nodulus or ramus; cornu as broad as corpus. Spiculum Ventrale ( Fig. 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.

Figures

FIGURES 15–19. Neapion (N.) diringsi sp. nov.: paratype female, dorSal (15) and lateral vieW (16); Spiculum gaStrale (17); peniS, dorSal vieW (18); tegmen, dorSal vieW (19).

FIGURES 20–22. Neapion (N.) diringsi sp. nov.: ovipoSitor coxite and StyluS (20); Spermatheca (21) and Spiculum ventral (22).