Archaeoditomotarsus, Faúndez, Eduardo I., Carvajal, Máriom A. & Rider, David A., 2014

Faúndez, Eduardo I., Carvajal, Máriom A. & Rider, David A., 2014, Archaeoditomotarsus crassitylus, gen. and sp. nov. (Hemiptera: Heteroptera: Acanthosomatidae) from Chile, Zootaxa 3860 (1), pp. 87-91 : 87-88

Archaeoditomotarsus gen. nov.

Type species: Archaeoditomotarsus crassitylus sp. nov., by present designation.

Description. General coloration brownish dorsally, cream-brownish ventrally. Dorsal surface covered with strong and deep punctures, punctation dispersed with several unpunctate patches along the body.

Head. Anteclypeus strongly extending beyond the anterior end of paraclypei, giving a characteristic shape of head ( Fig. 4 ); first antennal segment extending beyond paraclypei and nearly reaching apex of clypeus; bucculae evanescent posteriorly; first rostral segment not reaching the posterior end of bucculae, lateral margins of head slightly concave; rostrum extending to metacoxae.

Thorax and wings. Pronotum subtriangular ( Figs 1, 2 ) with a little cleft on humeral angles; cicatrices immaculate; lateral margins of pronotum straight, anterolateral margins truncate, not produced; thorax without any carina ventrally; ostiolar peritreme narrow and elongated (reaching the half-width of metapleuron) ( Fig. 3 ), oval and flat, evaporatorium nearly unpunctate and smooth, without gyrification, occupying two thirds of metapleuron and occupying a little space in the posterior portion of the mesopleuron ( Fig. 3 ); scutellum nearly equilaterally triangular, with an ivory callus on each side of base; hemelytra covering connexiva, membrane extending beyond apex of abdomen; tibiae without any sulcus or teeth.

Abdomen and general body features. Basiabdominal spine absent; connexiva immaculate and smooth; Pendergrast’s organs present on 6th and 7th sternum of female ( Fig. 5 ); lateral margins of 7th sternum nearly straight; pygophore subrhomboid, posterior margin nearly straight ( Fig.7 ), slightly concave in the mesial portion of the posterior edge. Basal plates rounded and curved at the edges ( Fig. 5 ).

Etymology. The name is composed of the Greek prefix Archaeo -, meaning ancient, and the genus name of Ditomotarsus ; the gender is masculine.

Figures

FIGURES 1 − 4. Archeoditomotarsus crassitylus gen. and sp. nov. 1 — male holotype habitus; 2 — female habitus; 3 — metapleuron; 4 — head (female paratype).

FIGURES 5 − 8. Archeoditomotarsus crassitylus n. gen, n. sp. Fig. 5, female terminalia, ventral view (rotated); Fig. 6, distribution; Fig. 7, pygophore, ventral view; Fig. 8, pygophore caudal view, parameres in natural position.