Macroscytus nigroaeneus
Creators: name: Lis, J. A.
Publisher: name: Zenodo
Year: 2000
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Cydnidae
Macroscytus
Macroscytus nigroaeneus

description: Macroscytus nigroaeneus (WALKER)
(Figs 231­233)
Aethus nigroaeneus WALKER, 1867: 158; LETHIERRY & SEVERIN 1893: 81.
Macroscytus foveolus, not ot DALLAS: SIGNORET 1883a: 472.
Cydnus ceylonicus, not of MAYR: LETHIERRY & SEVERIN 1893: 65 [part]; DISTANT 1899: 227 [part]. Aethus ceylonicus, not ot MAYR: KIRBY 1891: 80 [part].
Cydnus nigroaȇnus: DISTANT 1902: 92.
Macroscytus nigroaeneus: HORVÁTH 1919: 239; LIS 1991a: 185 [as distinct species], 1994a: 241.
DESCRIPTION
Body 8.40­10.69 mm in length, 4.70­6.45 mm in width, from blackish brown to black, corium usually more brown than pronotum and scutellum; sometimes umbones of pronotum light brown apically.
Head dorsally wrinkled, distinctly punctate on paraclypei, vertex smooth; clypeus without a pair of subapical hair­like setae, each paraclypeus with 4­8 submarginal setigerous punctures bearing long hair­like setae (Fig. 231); ocular index 2.45­2.90; interocellar index 8.0­13.0; length of antennal segments (in mm): 0.35­0.49: 0.49­0.77: 0.47­0.70: 0.65­0.87: 0.70­0.91.
Pronotal transverse postmedian impression absent or only faintly developed; calli more or less elevated; puncturation of disc dense, well visible medially and posteriorly; lateral margins with 12­16 submarginal setigerous punctures bearing long hair­like setae (Fig. 231).
Scutellum densely punctate, with exception of anterolateral angles and apex.
Corium punctate; clavus with one complete and two partial rows of punctures; mesocorial disc and exocorium densely punctate; costa narrow, almost entirely separated from exocorium, bearing 4­9 setigerous punctures (Fig. 231). Propleural depression, apical part of anterior convexity, and almost entire posterior convexity distinctly punctate.
Male hind femora with conspicuous subapical tooth, male hind tibiae with large subbasal tubercle.
Abdominal sterna glossy in the middle, lateral two thirds of sterna III­VI distinctly punctate and sometimes also transversely striated, sternum VII almost impunctate.
Male genitalia as in Figs 232­233.
TYPE DATA
Lectotype female (designated by LIS 1991a: 185): Ceylon (BMNH).
MATERIAL EXAMINED
Lectotype, and 94 other specimens: India: Coimbatore, Madras St., 25 exx. (IRSNB, NNML, ZMA, NSMT, UO); Point Calimere, Madras St., 1 ex. (NSMT); Anamalai Hills, Cinchona, 1 ex. (NNML); Pondicherry State, Karikal, 3 exx. (NNML); Kerala, Trichur Distr., Peechi, 2 exx. (UO); Trichinopoli, 1 ex. (MNHN); Trevandrum, 1 ex. (MNHN); Coromandel, Genji, 1 ex. (MNHN); Ramandorogm, 1 ex. (HNHM); Madras, Presid, Ramandroog, 2 ex. (ZIZM, NHMW); Tenmalai, Travancore, 3 exx. (BMNH); Dhikala, Naini Tal, 1 ex. (BMNH); Cote de Malabar, 2 exx. (MNHN); Karnataka, Abiathi, 1 ex. (ZSMC). Nepal: Amiekhgani, Therai, 1 ex. (UO). Sri Lanka: Ceylon, 3 xx. (NhMW, HNHM, BMNH); Anuradhapura, 2 exx. (ZMA, ZSMC); Wirawila, 2 exx. (SMNS); Paradeniya, 1 ex. (NHMW); Hambantota, 2 exx. (BMNH); Galge Ruhunu Nat. Park, 1 ex. (UO); Vavuniya NP., 1 ex. (BMNH); Batticaloa, 1 ex. (BMNH); Polonuruwa, 2 exx. (TLM); Nat. Park Wilpattu, Talawila, 13 km W Maradanmaduwa, 17 exx. (ZIP); Nat. Park Yala, Mahasilawa, 8 km ENE Palatupana, 8 exx. (ZIP); Southern Prov., Yala Nat. Res., 1 ex. (HNHM); Noert Western Prov., Galkulama, SE Anuradhapura, 3 exx. (HNHM, UO); Katagarama, Buttala Road, 3 exx. (HNHM, UO); Dambulla env., 1 ex. (ZSMC).
DISTRIBUTION
India, Nepal, Sri Lanka.
description: Published as part of Lis, J. A., 2000, A revision of the burrower-bug genus Macroscytus Fieber, 1860 (Hemiptera: Heteroptera: Cydnidae), pp. 359-509 in Genus (Wrocław) 11 (3) on pages 451-453