Libiocoris heissi Bai, Yang & Cai, sp. nov.
Creators: name: Bai, Xiaoshuan
name: Yang, Chunwang
name: Cai, Wanzhi
Publisher: name: Zenodo
Year: 2006
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Aradidae
Libiocoris
Libiocoris heissi

description: 1. Libiocoris heissi Bai, Yang & Cai sp. nov.
(Figs. 1, 3–7)
Diagnosis: This species is most similar to L. indicus Heiss 1982, but differs by abdominal spiracle II ventral and connexiva II and III completely fused (Fig. 1) (vs. abdominal spiracle II lateral and connexiva II and III separated by thin sulcus in L. indicus Heiss).
Description of female. Color: Body reddish brown to blackish brown, incrustation grayish brown. Eyes reddish.
Structure: Head, thoracic tergites and pleura, most of abdominal tergites, connexiva, lateral sides of third to sixth abdominal sterna, and seventh sternum covered with incrustation. Antenna and legs covered with adpressed setae (Fig. 1). Head longer than wide across eyes; genae short, slightly notched anteriorly, reaching basal one-third of first antennal segment; clypeus strongly raised anteriorly, with tubercle near apex. Antenniferous tubercles short, dilated, apices acute, divergent anteriorly. Eyes small, convex laterally. Postocular tubercles widely rounded and reaching outer side of eyes; postocular borders behind tubercles straight and converging. Vertex with Y-shaped granulate carinae; infraocular callosities large, ovate, separated from medial carinae by deep sulci. Antenna 2.24 times as long as width of head across eyes; first segment stout, clavate; second and third cylindrical, third pendunculate at base; fourth fusiform and pilose at apex (Fig. 5). Rostrum short, rostral groove broad, deep, closed posteriorly (Fig. 4). Pronotum 2.6 times as wide as long; collar narrow; anterolateral angles produced forward beyond collar as 2 (1+1) large, blunt lobes; disc with subtriangular median carina, without sulci; laterad of median carina disc with 2 (1+1) small callosities, and further laterad irregular carinae; posterior margin of pronotum slightly convex posteriorly, separated from mesonotum by deep furrow. Mesonotum wider than pronotum; separated from metanotum by 2 (1+1) thin sulci laterally; across meso- and metanota medially with elongate, rhomboid ridge, subrounded anteriorly and truncate posteriorly, without sulci; laterad of median ridge disc with 6 (3+3) longitudinal ridges, lateral border granulate. Metanotum wider than mesonotum; separated from tergum I by a slightly sinuate thin sulcus; laterad of median ridge with 6 (3+3) longitudinal ridges, lateral border granulate, similar to those on mesonotum. Legs long, slender, without spines, preapical comb on fore tibia present, femur subcylindrical, claws with fine pulvilli (Fig. 6). Tergum I fused with tergum II, disc with 2 (1+1) tubercles separated medially by a wide, deep depression; tergum II wide, sloping posteriorly and sideways, forming 2 (1+1) large, ovate plates flanking median depression. Central dorsal plate subrectangular, consisting of terga III to VI; moderate carina raised medially on tergum III, pentagonal elevation on tergum IV, tapering ridge on terga V and VI; laterad of median ridge with a usual pattern of large and small callous spots. Connexiva slightly reflexed; deltg II and III completely fused, others separated by fine sulci; posterolateral angles of deltg II to VII progressively protruding; paratergites dentiform; terminal part of abdomen as in Figs. 1, 7. Abdominal spiracle II ventral, III–VIII lateral and visible from above. Prosternum raised medially and with irregular carinae on elevation medially; meso- and metanota and sternum II flattened medially, without sulci. Sterna III to VI raised along posterior border, depressed along anterior border, and with triangular, smooth spots medially, flanked by 2 (1+1) large, transversely ovate depressions, these bearing 2 (1+1) round callous spots; more laterad 4 (2+2) smaller round callous spots.
Measurements [in mm, Ψ (n=1)]. Body length 5.5; maximal width of abdomen 3.0. Length head (including neck) 0.98, width 0.88. Length pronotum 0.52, width 1.35. Width mesonotum 1.71; width metanotum 2.24. Length antennal segments I–IV = 0.68, 0.31, 0.68, 0.31.
Type material: Holotype: Ψ, China, Hainan, Baisha, 8. IX.2005, L. S. Chen leg. (CAU).
Etymology: We dedicate this interesting species to Dr. Ernst Heiss for his excellent contributions to our knowledge of world aradids.
Distribution: China (Hainan).
description: Published as part of Bai, Xiaoshuan, Yang, Chunwang & Cai, Wanzhi, 2006, First record of the genus Libiocoris Kormilev 1957 (Heteroptera: Aradidae) from China, with the description of two new species, pp. 39-47 in Zootaxa 1370 on pages 41-43, DOI: 10.5281/zenodo.174895