Proneoproxius cornutus, Heiss, Ernst & Poinar, George O., 2012

Heiss, Ernst & Poinar, George O., 2012, The first Carventinae species in Miocene Dominican Amber (Hemiptera: Heteroptera: Aradidae), Zootaxa 3268, pp. 47-54 : 53

Proneoproxius cornutus n. sp. Heiss & Poinar

(Photo 7, 9, Fig.3 )

Holotype: Specimen of unknown sex in a cabochon-shaped yellowish-brown piece of Dominican Amber (22x 11.5 x 6 mm) together with some syninclusions of detritus. It is designated as holotype and deposited in the collection of G.O.Poinar ( CGPC) no. HE-4- 14 F.

Description. Head. Wider than long (27/21), clypeus thin, enclosed by anteriorly produced and dilated genae leaving a cleft at apex, these nearly reaching apex of antennal segment I; antenniferous lobes finger-like reaching of antennal segment I, antennae 1.37x as long as width of head (37/27), segment I thickest and slightly bent outward at base, II smallest and club shaped, III thinnest and longest tapering toward base, IV elongate fusiform with pilose apex; length of antennal segments I/II/III/IV = 9/5/12 /11; eyes small, inserted in head (right eye displaced); postocular lobes triangularly produced and dilated laterally, posterior margin sinuate, converging to the constricted collar.

Thorax. Pronotum. Subrectangular, distinctly wider than long (40/14); lateral margins subparallel anteriorly, slightly convex on posterior half, anterolateral angles rounded, anterolateral margins straight; disk medially depressed, lateral lobes raised, anterior lobe with 2 (1+1) elevated ridges, these produced and converging anteriorly nearly reaching postocular lobes, their apices rounded.

Meso- and metanotum. Lateral margins raised and rounded, disks deeply depressed at middle, this depression apparently triangularly widening and posteriorly extending over fused mtg I+II to meet the depressed tergal plate; no surface structure is discernible.

Abdomen. Tergal plate depressed with a shallow longitudinal elevation medially; deltg II+III seem to be fused, deltg III–VII separated by sutures, their surface elevated above tergal plate with deep apodemal impressions and a longitudinal carina along inner margin. Structures of ventral side not discernible, only lateral position of spiracle VI can be recognized.

Legs. Slender, femora only slightly incrassate at middle, fused to trochanters; tibiae straight, tarsi two-segmented, claws with thin pulvilli.

Measurements. Length (of damaged specimen) 3.0mm; width of mesonotum 1.1mm, of metanotum 1.2mm, across tergite IV 1.3mm.

Etymology. Referring to the conspicuous projections of pronotum, < cornutus > (Latin) = bearing horns.

Figures

FIGURES 1 – 3 Reconstruction of head and pronotum. 1 — Neoproxius latocanus n. sp.; 2 — Carventus bechlyi n. sp.; 3 — Proneoproxius cornutus n. gen., n. sp.