Nysius spectabilis Distant
Creators: name: Malipatil, M. B.
Publisher: name: Zenodo
Year: 2010
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Lygaeidae
Nysius
Nysius spectabilis

description: Nysius spectabilis Distant   
(Fig. 6, 17 – 19)  
 Nysius spectabilis Distant, 1901: 465.   
 Type specimens examined: Lectotype female, “ Lectotypus female,” “ spectabilis Dist. ” “Christmas I., C.W. Andrews 98-20,” “North Coast Dec 1897,” “ Nysius spectabilis W.L. Distant. ” Left antenna, 4 th segment of right antenna missing; dissected genitalia in glycerine in microvial attached to specimen; in NHM.   
 Description: Measurements are of the lectotype female.   
Body length 4.5; maximum width 1.40.  
 Coloration: Head, pronotum, and scutellum black. Antennae, anterior margin, posterior half of lateral margins, and a large irregular discal spot to pronotum pale yellow. Apex of 4 th antennal segment fuscous. Corium and membrane greyish-white. Apex of clavus, two somewhat large spots on posterior margins of corium and a small spot at apical angle black. Body beneath generally black. Legs, central area of abdomen, anterior margin and lateral angles of prosternum, lateral margins of meso-and metasterna, posterior margin of metasternum, antennae except tip of 4 th segment, and coxal spots, pale yellow. Legs (particularly femora) without fuscous spots or patches, only last tarsal segment fuscous.   
 Structure: Body generally with fine pubescence (mostly rubbed off in type specimen) but not with coarse bristly setae. Head coarsely punctate above, indistinctly punctate below, length of head 0.87; width across eyes 1.12; interocular space 0.64; interocellar space 0.29; eye-ocellar space 0.11; eye length 0.39; eye width 0.25. Buccula gradually diminishing posteriorly, ending before base of head, covered with few indistinct punctures all over. Labrum about as long as 1 st labial segment. Labium slender, extending to hind coxae, 1 st segment as long as buccula, not reaching base of head, length of segments: I 0.57; II 0.50; III 0.52; IV 0.36. Antennae with 4 th segment about as long as 3 rd segment, 1 st segment exceeding tip of head by 1/3; length of segments: I 0.37; II 0.87; III 0.69; IV missing.   
Thorax: Pronotum coarsely punctae with a central impression; median length 0.92; width at anterior margin 0.88; width at posterior margin 1.38. Scutellum coarsely punctate, without setae; length 0.69; width 0.85. Hemelytra exceeding abdomen, without pubescence or setae, without punctures except clavus which has very faint punctures not arranged in distinct rows. Length of hemelytra 3.20; length of corium 2.16; claval commissure 0.46.  
Abdomen: Venter shiny and pubescent. Ventral trichobothria on sterna III roughly in triangle, on IV in linear pattern.  
Female: Spermatheca (Fig. 17). Ovipositor with first ramus (Fig. 18); second gonapophysis (Fig. 19).  
 Distribution. Christmas Island (Indian Ocean).   
 Diagnosis. N. spectabilis differs from other species in the study area in the following colour markings: Head, pronotum, and scutellum black. Antennae, anterior margin, posterior half of lateral margins, and a large irregular discal spot to pronotum pale yellow. Apex of fourth antennal segment fuscous. Corium and membrane greyish-white. Apex of clavus, two somewhat large spots on posterior margins of corium, and a small spot at apical angle, black. Legs pale yellow, particularly femora without fuscous spots.
description: Published as part of Malipatil, M. B., 2010, Review and Revision of Nysius Dallas of Australia and South West Pacific (Hemiptera: Heteroptera: Orsillidae), pp. 29-44 in Zootaxa 2410 (1) on pages 42-43, DOI: 10.11646/zootaxa.2410.1.2, http://zenodo.org/record/5307012