Stipesoculus Bai, Wu & Cai, 2007

Bai, Xiaoshuan, Wu, Zhiyi & Cai, Wanzhi, 2007, Unprecedented interweaving of single-helical and unequal double-helical chains into chiral metal – organic open frameworks with multiwalled tubular structures, Zootaxa 1562, pp. 55-61 : 56

Stipesoculus Bai, Wu & Cai , gen. n.

Type species of genus: Stipesoculus productus Bai, Wu & Cai , sp. n.

Diagnosis: Micropterous. Of medium size. Body elongate ovate; sparsely covered with stiff, erect bristles. Head shorter than width across eyes; anterior process short; eyes semiglobose, protruding laterally on two short stalks ( Fig. 1 ); postocular border convergent, without tubercles; antennae less than twice as long as width across eyes; first and third segments subequal in length, second and fourth segments subequal in length, first stout, clavate; second tapering toward base, third cylindrical, fourth fusiform; rostrum arising from a slitlike opening of atrium, not reaching limits of rostral groove ( Fig. 2 ). Pronotum less than three times as wide as long at midline; collar narrow; lateral margins strongly produced forward as subrectangular lobes, with round tip, subparallel at humeri, posterior margin slightly convex backward. Scutellum large, subtriangular, flanked by 2 (1+1) large deep impressions at middle. Hemelytra reduced to small pads laterad of scutellum, lateral margins protruding into tubercles. Meso- and metanota and tergum I fused together, divided into 2 (1+1) portions by scutellum; metanotum and tergum I sloping towards median. Legs slender, without spines; trochanters distinct. Tegum II divided into 2 (1+1) triangular portions by abdominal central dorsal plate; latter pentagonal, consisting of terga III to VI ( Fig. 1 ). Lateral margins of connexiva of male subparallel; of female, rounded. Paratergite VIII clavate or dentiform ( Figs. 3–5 ). Metathoracic scent gland canal obliquely elevating and curving dorsally, visible from above. Sterna III to VI raised along posterior border, depressed along anterior border; lateral plates with deep pits (female) or granules (male); sternum VII of male with 2 (1+1) ovate depressions ( Fig. 5 ). Pygophore cordate.

Distribution: China.

Etymology: The generic name refers to the eyes’ being situated on two stalklike processes.

Remarks: The new genus is similar to Lophocoris Usinger & Matsuda in general body plan, but the lateral margins of the pronotum of the new genus protrude forward into subrectangular lobes (vs. lateral pronotal margins produced anteriorly and in front of humeri into two prominent fingerlike lobes in Lophocoris Usinger & Matsuda ). The habitus and the ovate depressions of sternum VII of male, with 2 (1+1), resemble those of the genus Neartabanus Heiss ; but the new genus is micropterous, and all femora lack spines (vs. brachypterous or macropterous, with preapical spines on all femora in Neartabanus Heiss ). The central dorsal plate of the abdominal pentagon resembles that of the genus Apaniocoris Komilev , which is also micropterous; but the eyes are situated on two stalklike processes, the lateral pronotal margins protrude forward into subrectangular lobes in the new genus (vs. eyes normal, lateral margins of pronotum slightly sinuate in Apaniocoris Komilev ). The four genera can be distinguished with the following key.

Figures

FIGURE 1. Stipesoculus productus sp. nov. ♂, Holotype. Habitus. Scale bar = 1 mm.

FIGURES 2–14. Stipesoculus productus sp. nov. 2, 5–14, ♂; 3, 4, ♀. 2, Habitus, antennae and legs partly removed; 3, 4, 5, abdominal segments V–VIII; 6, 7, pygophore; 8, 9, 10, right paramere; 11, 12, phallus and basal structure; 13, 14, phallosoma and vesica. 2, 7, 10, 12, lateral view; 3, 6, 8, 13, dorsal view; 5, 4, 9, 11, 14, ventral view. Scale bar of 2–5 = 1 mm; of 6–7 = 0.5 mm; of 8–14 = 0.25 mm.