Syntelia histeroides Lewis, 1882


Syntelia histeroides Lewis, 1882: 137 [Japan: Yashiu, Southern Hokkaidô, Kumakawa in Higo, Sado]; Waterhouse, 1882-1890: t. 133, fig. 8; Redtenbacher, 1886: 216, t. 19, fig. 122; Sharp and Muir, 1912: 511, t. 55, fig. 77, 438; Sharp, 1899: 229; Ganglbauer, 1899: 415; Jakobson, 1915: 869; Hetschko, 1926: 13; Mastumura, 1931: 16; Yuasa, 1930: 257; Kryzhanovskij and Reichardt, 1976: 414; Nakane, 1963: 67, pl. 34, no. 2; Hisamatsu, 1985: 219, pl. 40, no. 2; Ôhara, 1994, 61.

Japanese name: Emma-mushi-modoki.


Original description. "Black, shining: head with a few large scattered punctures; thorax, disc smooth with some deep punctures at the sides, lateral edge and base emarginate, elytra smooth with deep punctate striae, four dorsal more or less broken, one outer and one sutural complete, the last continuous, running round both the apex and base of elytra and joining the outer elytral margin. The pygidium is evenly and coarsely punctured, convex in the middle, with lateral depressions deepening and ending before the base. Beneath, the segments of the abdomen are sparsely punctured in the middle, more thickly at the sides, mesosternm behind the middle coxae smooth in the medial region, and in front of coxae thickly and somewhat strigosely punctate.

This species differs much from S. indica, the chief points of variance being colour, punctuation of pygidium, the more convex and quadrate thorax, and the deep irregular elytral striae. The spines on the tibiae correspond in both species. The elongation of the thorax in Westwood's figure of indica is somewhat exaggerated. Length 6. 1/2 - 7. 1/2 lines. "


Ohara (1994)

Description. Body length (length between apex of head and apex of pygidium), 11.00 - 16.00 mm (13.60 ± 0.31, n=20). Width, 3.25 - 4.75 mm (4.09 ± 0.08, n=20). Biometric data are given in Table 5. Body (Fig. 39A) cylindrical, somewhat stout. Cuticle shining, black; tarsi and antennae dark rufopiceous.

Head (Fig. 39A) coarsely punctate on a transverse narrow band between eyes and near around eyes, the punctures irregularly scattered and sometimes present posteriorly; surface among the coarse punctures sparsely and evenly clothed with microscopic punctures.

Anterior margin of pronotum (Fig. 39A) densely with short hairs and its median portion slightly arcuate outwards. Sides of pronotum clearly convergent posteriorly, carinate and marginate, the marginal stria curved behind anterior angles and shortly extended inwards, and the posterior ends of the marginal stria extending inwards along posterior margin and united with each other. Surface of pronotum coarsely and densely punctate on a narrow area along the marginal stria, the punctures a little coarser than those of head and several ones scatteringly present on broad lateral area; remain of surface of disk smooth, evenly clothed with microscopic punctures, the punctures being separated by five to ten times their diameter.

Scutellum (Fig. 39B) longitudinally oblong.

Epipleura of elytra narrow. Marginal epipleural stria feebly carinate and complete. Marginal elytral stria complete, strongly carinate and crenate, and inwardly sinuate on basal fourth; its basal and apical ends extended inwardly along basal and apical margins of elytra, and the ends united with basal and apical end of sutural stria respectively; area between marginal epipleural and elytral striae with three rows of setiferous punctures on dorsal fourth, the setae being long and stout. External subhumeral stria (Fig. 39A) complete and densely covered with coarse punctures. Internal subhumeral stria usually present on basal third, but absent on humeral area (nearly basal sixth). First dorsal stria nearly complete, but abbreviated on basal sixth (humeral area) and apical fourth. Second dorsal stria complete, usually abbreviated on apical sixth. Third dorsal stria present on apical half, but shortened on apical sixth, and short rudiments present at base and on median third of apical half. Fourth dorsal stria absent, sometimes with a short rudiment which consists of two or three punctures occurring on apical sixth. Fifth dorsal stria present on about median third, but sometimes shortened apically, and a short rudiment present on apical fifth. Sutural stria complete. All striae deeply impressed and coarsely punctate. Intervals among the striae sparsely clothed with microscopic punctures.

Pygidium (Fig. 39C) deeply depressed on each lateral side, the basal end of the depression not attaining to the base; its sides strongly carinate; surface densely covered with coarse and deep punctures, and other fine punctures intermingled among coarse ones, these punctures becoming denser and finer basally.

Antennal grooves present on anterior area of underside of head, the grooves strongly carinate basally and running obliquely from anterior margin of eye to apical third of head on mid line.

Anterior margin of prosternal lobe outwardly acute at middle, and with long hair; disk of the lobe impunctate. Prosternal process divided into anterior and posterior parts by procoxae; apical two-thirds of the anterior part elevated and with smooth disk, and the basal third triangular, its basal margins strongly convergent along procoxae, the apical margin of process with two or three long setiferous punctures; the posterior part short, oblong and impunctate.

Mesosternum moderately convex on median area; surface densely covered with coarse punctures, the punctures becoming denser medially, producing many rugae; area of these rugae clothed with other dense and fine microscopic rugae; area before posterior corner and between mesocoxae impunctate.

Meso-metasternal suture shortly present. Metasternum deeply with arcuate depression between mesocoxae; intercoxal disk shallow and logitudinally sulcate on longitudinal mid line, and impunctate; lateral disk densely covered with coarse and shallow punctures which are shallower, sparser and finer posteriorly. Metepisternum somewhat sparsely covered with coarse, transversely oblong and shallow punctures which are a little coarser than those of lateral disk of metasternum.

Table 5. Biometeric data of Syntelia histeroides Lewis.

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APW 3.00-4.38 (3.64±0.08) 20

PL 2.50-3.75 (3.15±0.07) 20

EL 4.88-6.63 (5.84±0.10) 20

EW 3.25-4.75 (4.09±0.08) 20

PyW 2.00-3.13 (2.61±0.05) 20

PyL 2.13-3.13 (2.61±0.05) 20

PTL 1.75-2.50 (2.19±0.05) 20

MSTL 1.88-2.50 (2.11±0.04) 20

MTTL 1.88-2.75 (2.30±0.05) 20

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First abdominal sternum densely and coarsely punctate except on medioposterior area. Second - 5th abdominal sterna densely and coarsely punctate laterally.

Protibia (Fig. 39E, D) with 5 denticles on outer margin. Mesotibia with 4 denticles on outer margin, the basal one small. Metatibia with two denticles on apical third of outer margin.

Male genitalia as shown in Fig. 40A - G.

Female genitalia: spermatheca as shown in Fig. 40H.

Remarks. Syntelia histeroides is a distinctive species within the superfamily due to its shape and rather large size. It cannot be confused with any other species of the histerids.

This species frequents in sap of elm and under bark. Larva is found under bark.


Hirano (1987)

Japan: Kanagawa.


Ohara (1994)

Specimens examined. [Hokkaidô] 8 exs., Nopporo, 19, 20, 22, 26/vi, 24/vii/1987, M. Ôhara leg.; 1 ex., Ditto, 30/vi/1987, S. Kudô leg.; 10 exs., Eniwa, Isarigawa, 16/vi/1986, M. Mori leg.; 1 ex., Maruyama, Sapporo, 3/vii/1985, M. Ôhara leg.; 1 ex., Ditto, 22/vi/1940, B. Nishio leg.; 1 ex., Mt. Moiwa, Sapporo, 5/vii/1978, T. Fujisawa leg.; 2 exs., Ditto, 15/vi/1904, no collector's name (NSMT); 1 ex., Heiwa-no-taki, Sapporo, 2/viii/1977, T. Fujisawa leg.; 2 exs., Ditto, 1/vi/1966, N. Ueda leg.; 1Åä, Sapporo, 31/v/1976, M. Furukawa leg.; 5 exs., Hakkenzan, Jôzankei, 7/vi/1976, 16/vi/1982, M. Mori leg.; 3 exs., Ditto, 11, 24/vi/1978, T. Fujisawa leg.; 1 ex., Misumai, Sapporo, 10/vi/1979, A. Shinohara leg. (NSMT); 3 exs., Jôzankei, 17/vi, 13/vii/1985, M. Ôhara leg.; 1 ex., Shikotu-ko, 6/viii/1971, Y. Doi leg. (NSMT); 1 ex., Enshûrin, Tomakomai, 3/viii/1974, A. Kashizaki leg.; 1 ex., Ditto, 18-30/viii/1978, H. Detani leg.; 2 exs., Okusawa, Otaru, 29/vii/1955, Y. Watanabe leg.; 5 exs., Mt. Yotei, Hirafu, Kutchan, 15-16, 22/vii/1991, M. Ôhara leg.; 1 exs., Daisengen, 17/vii/1973, T. Ichikawa leg.

[Honshû] <Miyagi-ken> 1 ex., Moriyasu, Akiu-mura, 24/vi/1951, no collector's name (NSMT). <Tochigi-ken> 1 ex., Chûzenji, 14/viii/1917, E. Gallois leg. (NSMT). <Gumma-ken> 1 ex., Hôshi-onsen, 6/vi/1953, Y. Kurosawa leg. (NSMT). <Saitama-ken> 1 ex., Oku-Chichibu, 24/vii/1940, K. Kojima leg. (NSMT). <Nagano-ken> 1 ex., Mt. Yatsu-ga-take, 25/vii/1957, S. Nomura leg. (NSMT); 1 ex., Mt. Chausu-dake, Yokokubo-zawa, 1600m, S. Jap. Alps, 24/vii/1940, S. Uéno leg. (NSMT).


Specimens examined [additional records]. (Ohara, 1999a).

[Hokkaido] Proper: Nopporo (4 exs., 16/vi; 1 ex., 10/vii; 1 ex., 15/vii; 1 ex., 20/vii; 2 exs., 24/vii/1973, HMH), Y. Sakamoto; Maruyama, Sapporo (2 exs., 28/vi/1961), S. Takagi; Jozankei, Sapporo (1 ex., 17/vi/1954), S. Takagi; Meguro, Saruru River, Erimo-Town (2 exs., 29/vi/1996), K. Mizota.

[Honshu] Aomori-ken: Mt. Rangannomori, Ajigasawa-machi (1 ex., 31/vii/1982, APM), A. Abe; Zatôishi, Hirosaki-shi (1 ex., 7/vi/1958, APM), A. Abe; Fuyubegawa, Kodomari-mura (1 ex., 18/viii/1974, APM), A. Fukuda; Juniiko, Iwasaki-mura (1 ex., 23/v; 1 ex., 29/v; 1 ex.,16/vi/1966; APM), A. Abe; (3 exs., 20/vi/1964; 2 exs., 13/viii/1965; APM), K. Shimoyama; Heiroku, Hiraka-machi (1 ex., v/1945, APM), no collector's name; Hiraka-machi (1 ex., 3/viii/1956, APM), A. Abe; Ohawara, Kuroishi-shi (1 ex., 1/vi/1958, APM), A. Abe; Akaishigawa, Ajigasawa-machi (1 ex., 24/vii/1985, APM), K. Shimoyama; Towada, Hiraka-machi (1 ex., 28/vi/1953; 1 ex., 19/vi/1954; 1 ex., 12/vi; 1 ex., 17/viii/1955; 1 ex., 29/vii/1956; 2 exs., 1/vi/1958; APM), K. Shimoyama; Hirukaizawa, Kuroishi-shi (1 ex., 21/vi/1941; 1 ex., 13/vi/1943; APM), K. Shimoyama. Fukushima-ken: Kirinte, Hinoemata (1 ex., 15/vi/1986), A. Yamato. Toyama-ken: Awasuno (1 ex., 4/viii/1953), S. Takagi.

Distribution. Japan (Hokkaido, Honshu, Kyushu); Kuril Isles.


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