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

description: Macroscytus transversus (BURMEISTER)
(Figs 314­320)
Cydnus transversus BURMEISTER, 1834: 291.
Acatalectus transversus WALKER, 1867: 164 (syn. by DISTANT 1899: 222).
Adrisa transversa (WALKER): LETHIERRY & SEVERIN 1893: 63; BREDDIN 1906: 10.
Macroscytus transversus (BURMEISTER): STÃL 1871: 614, 1876: 19; SIGNORET 1881: 642, 1883a: 476 [part]; LETHIERRY & SEVERIN 1893: 71; DISTANT 1899: 222, 1902: 96 [part]; BREDDIN 1905: 114; WU, 1935: 270; BOX 1953: 36; FROESCHNER 1967: 21; LIS 1991a: 187, 1991b: 309, 1994a: 231, 1994b: 325, 1995b: 145, 1996: 224.
DESCRIPTION
Body 7.35­10.88 mm in length, 3.92­5.74 mm in width, from dark brown to blackish brown, posterior margin and umbones of pronotum intensely yellowish brown or milky yellow, corium paler than pronotum and scutellum, sometimes clavus and exocorium yellowish brown or ochraceous.
Head dorsally with hardly visible tiny punctures, usually wrinkled, sometimes with single large punctures in lateral parts of paraclypei; clypeus without a subapical pair of hair­like setae, each paraclypeus submarginally with a single preocular setigerous puncture (Fig. 315); ocular index 2.15­2.90; interocellar index 4.2­6.2; length of antennal segments (in mm): 0.38­0.49: 0.42­0.66: 0.50­ 0.87: 0.60­1.03. 0.80­1.12.
Pronotal disc clearly punctate, transverse discal impression behind calli absent; lateral margins with 5­6 submarginal setigerous punctures (Fig. 314). Propleural depression and basal half of posterior convexity with numerous large punctures, anterior convexity dulled by numerous small punctures and wrinkles.
Scutellum almost evenly punctate, basal part and apex impunctate.
Clavus with one complete and one or two partial row of dark punctures; mesocorial disc and exocorium evenly punctate; costa narrow, entirely separated from exocorium, bearing 2 (rarely 3) setigerous punctures (Fig. 314).
Male hind femora with distinct subapical tooth on dorsal margin, and more or less distinct subbasal tooth on ventral margin, hind tibiae without tubercles (Fig. 316); female hind femora with more or less visible subapical tooth on dorsal margin, hind tibiae without tubercles.
Abdominal sterna glossy in the middle, lateral parts wrinkled and punctate around spiracles.
Male genitalia as in Figs 317­320.
TYPE DATA
Lectotype female (designated by LIS, 1991a: 187) of Cydnus transversus BURMEISTER: Philippines, Manila (MNHU).
Lectotype male (designated by LIS, 1994a: 232) of Acatalectus transversus WALKER: Indonesia, Aru (BMNH).
MATERIAL EXAMINED
Lectotype of Cydnus transversus, Lectotype and paralectotype of Acatalectus transversus, and 44 other specimens: Indonesia: Celebes, 1 paralectotype (BMNH); Java, Banjoewangi, 1 ex. (ZIP); Java, Soekaboemi, 1 ex. (NNML); Sulawesi Utara, Dumoga­Bone Nat. Park, 6 exx. (IRSNB, UO); N. Sulawesi, Dumoga Bone NP, Malibagu Rd., 1 ex. (NNML); Sulawesi Tenggara, S. Sanggona, Foot of Gn Watuwila, Mokowu river, 1 ex. (NNML); C. Sulawesi, Palu Region, Tawaeli ­ Tomboli rd (km 34), 1 ex. (NNML); Sulawesi Tengah, Nr. Morowali, Ranu River Area, 19 exx. (BMNH, UO). Philippines: Surigao, Mindanao, 1 ex. (ZMA); Leyte, 2 exx. (ZMA, UO); Davao, Mindanao, 1 ex. (UO); Luzon, Manila, 1 ex. (BMNH); Negro lsl., 3 exx. (AMNH, UO); Philippines, Trident Mines, nr Narwan, C. Palawan lsl., 3 exx. (NSMT, UO); Baracatan, Mindanao, 1 ex. (NSMT); Mindoro, 20km W Calapan, Hidden Parad., 2 ex. (NHMW).
DISTRIBUTION
Bismarck Archipelago (New Ireland), Indonesia (Aru, Java, Moluccas, Sulawesi, West Irian), Papua New Guinea, Philippines.
Reported also from China, Sri Lanka and Japan, but all those records were based on misidentifications (see LIS 1994a). Records from Australia related to M. bisetosus (see LIS 1999a).
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 481-483