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

description: Macroscytus javanus MAYR
(Figs 171­177)
Macroscytus javanus MAYR, 1866: 361 [1868: 8].
Macroscytus japonensis, not of SCOTT: SIGNORET 1881: 646 [part].
Macroscytus subaeneus, not of DALLAS: DISTANT 1899: 222 [part]; SCHOUTEDEN 1933: 44; JOSIFOV & KERZHNER 1978: 187 & 188.
Macroscytus subaeneus, not of DALLAS: DISTANT 1902: 96 [part].
DESCRIPTION
Body 7.30­9.15 mm in length, 3.85­5.01 mm in width, from castaneous to blackish brown, corium usually slightly paler than pronotum and scutellum, posterior margin of pronotum sometimes light brown or yellowish brown.
Head dorsally impunctate, or with a few tiny punctures, slightly wrinkled in lateral parts of paraclypei; clypeus without subapical setigerous punctures, each paraclypeus with 3­4 submarginal setigerous punctures (Fig. 172); ocular index 2.00­2.40; interocellar index 7.5­11.5; length of antennal segments (in mm): 0.33­0.42: 0.38­0.49: 0.56­0.63: 0.65­0.81: 0.72­0.85.
Pronotum without or sometimes with slightly developed transverse impression behind calli; pronotal disc with dense puncturation laterally and behind impunctate calli; lateral margins with 5­8 submarginal setigerous punctures (Fig. 171). Anterior convexity of propleuron with numerous small punctures, posterior convexity with large punctures, propleural depression coarsely punctate.
Scutellum densely punctate, with exception of anterolateral angles and apex.
Corium distinctly punctate; clavus with one complete and two partial rows of punctures, basal part sometimes with a patch of small punctures; mesocorial disc with distinctly separated punctures smaller than those on scutellum; costa moderately convex, almost entirely separated from exocorium, bearing 2­3 (rarely 4) setigerous punctures (Fig. 171).
Male hind femora with a distinct subapical tooth on dorsal margin, and a few smaller teeth on the ventral (Fig. 173); male hind tibiae carinate and with distinct subbasal triangular tubercle (Fig. 173); female hind femora with subapical tooth on dorsal margin, female hind tibiae without subbasal tubercle.
Abdominal sterna III and IV with small punctures anterior and posterior to spiracles, sterna V­VII with punctures posterior to spiracles only; single small punctures sometimes present also laterally to spiracles.
Male genitalia as in Figs 174­177.
TYPE DATA
Lectotype male (designated by LIS, 1994a: 240): Indonesia, Java (NHMW).
MATERIAL EXAMINED
Lectotype, and 94 other specimens: Indonesia: Sumatra, 1 ex. (NNML); Tandjong Morawa, Serdang, N.O. Sumatra, 1 ex. (NNML); Sumatra, Fort de Kock, 2 exx. (NNML); Sumatra, Labuan, 2 exx. (ZMHU); Sumatra, Medan, Doloc Baroe, 1 ex. (IRSNB); Sumatra, Bindjel­Medan, 4 exx. (ZMA, UO); Sumatra, Palembang, 3 exx. (ZMA, NNML); Sumatra, Padang, 4 exx. (ZMA, MNHN, NNML); Indrapura­Estate, Sumatra, 1 ex. (ZIZM); Sumatra, Dolok Merangir, 7 exx. (NNML, AMNH, UO); Sumatra, Lahat, 5 exx. (NNML); Sumatra, Malakoni, Insel Engano, 2 exx., (ZIZM); Java, 15 exx. (ZMHU, MNHN, HNHM, NNML); Java, Malang, 1 ex. (NNML); Java, Batavia, 1 ex. (MNHN); Java, Soekaboemi, 2 exx. (NNML); Java, Wellri Plellen, Siloewok Sawangan, 4 exx. (ZMA, UO); Java, Banjoewangi, 4 exx. (ZMA, ZIP, UO); Java, Ardja­Sari, Preanger, 1 ex. (ZMA); Java, Slawi Tegal, 1 ex. (ZMA); Java, Soerabaya, 7 ex. (ZMA, NNML); Java, Djakjarta, 1 ex. (ZMA); Java, Buitenzorg, 2 exx. (ZMA, NNML); Java, Mons Gede, 1 ex. (MNHN); Java, Mts Kawie, 1 ex. (ZIP); Java, Surabaja, 1 ex. (ZIP); Java, Blavan, Bondowoso, 1 ex. (ZIP); Java, Blawan, Indjen­Plateau, 2 exx. (ZIP, UO); Java, Bogor, 3 exx. (BMNH, NNML); Java, Temangoeng, 1 ex. (ZMA); Java, Garoet, Preanger, 2 exx. (NNML); Java, Lembang, 1 ex. (JEC); Celebes, Minahassa, Tomohon, 1 ex. (UO); S. Lombok, Ekas, 1 ex. (MNHU); O. Soembawa, Dompoe, 1 ex. (MNHU); Adonara, Solor lsl., 1 ex. (BMNH). Malaysia: Malay Peninsula, Kuala Lumpur, 3 exx. (BMNH, UO). Singapore: Singapore, 1 ex. (ZIZM). Thailand: Thailand, Khao Sok National Park, Phanom Surat Thani, 1 ex. (NSMT).
DISTRIBUTION
Indonesia (Sumatra, Java, Lombok — first record, Engano, Solor, Sumbawa — first record, Sulawesi — first record), Malaysia (Malaya), Singapore, Thailand (first record).
Records from China and Japan (SIGNORET, 1881, 1883a) related to M. japonensis (see LIS, 1994a).
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 431-434