Antocha (Antocha) dentifera Alexander, 1924

Podenas, Sigitas & Byun, Hye-Woo, 2013, Antochini crane flies (Diptera: Limoniidae: Limoniinae) of Korea, Journal of Species Research 2 (2), pp. 167-184 : 171-174

Antocha (Antocha) dentifera Alexander, 1924

Alexander, 1924: 63; Alexander, 1969: 34; Ishida, 1957: 147; Torii, 1992b: 172.

General coloration of dry and alive specimens light gray. Specimens in ethanol turn brown. Generally females are lighter than males. Body length of male 3.2-5.0 mm, body length of female 5.5-6.2 mm. Wing length of male 3.5-6.5 mm, wing length of female 6.3-6.6 mm.

Head brownish gray, clearer gray along the orbits, covered with sparse setae. Antenna light brown to brown. Length of male antennae 0.7-0.8 mm, female 0.8-1.6 mm. Antenna short in both sexes, reaching only frontal margin of prescutum, if bent backwards, far not reaching base of wing. Scape yellow with brownish apex, pedicel dark brown, flagellum brown, composed of 14 oval flagellomeres. Verticils approximately as long as respective segments. Rostrum of male grayish brown, covered with sparse setae, rostrum of female yellow. Palpus of male brown to dark brown, that of female grayish.

Thorax generally brown. Pronotal scutum brown dorsally, yellowish laterally. Mesonotal prescutum pale obscure gray with three rather indistinct brown stripes. Mesonotal scutum light gray, brown, when submerged in ethanol, with distinct yellow spots at bases of wings. Scutellum greyish brown with indistinct yellowish median line. Mediotergite brown basally and dark brown distally. Pleura gray with brown spots. Wing ( Fig. 1B ) subhyaline, tinged with gray, whitened at base. Vein Sc short, ends some distance before fork of Rs. Stigma scarcely indicated, pale brown. Haltere pale, the knob brownish. Coxae testaceous, very sparsely pruinose. Trochanters pale yellow to testaceous. Femur of male dark brown, femur of female brownish with yellowish base. Tibiae of male dark brown, tibiae of female brownish yellow. Tarsi of male dark brown, tarsi of female brownish with yellow base of basal segment. Claw with a single subbasal spine.

Abdomen of male brown, of female pale brown. Abdominal tergites pale brown, sternites pale brown, basal sternites somewhat lighter. Male genitalia as in Fig. 2B . Outer gonostylus of male hypopygium with an acute chitinized spine on the lateral face immediately before midlength. Ovipositor ( Fig. 3D ) generally brown, cercus rusty brown, smooth ventrally, distal end obliquely truncated and weakly gauged, acute in extreme dorsal tip, bearing obtuse ventro-apical angle. Hypogynial valvae yellowish, moderately chitinized, tip with fleshy extension.

Flight period. lasts from early April through second tenday period of August in Korea. Active from beginning of June through end of August ( Savchenko and Krivolutskaya, 1976) in Russia.

Habitat. small to medium sized mountainnous streams with rocky bottoms and covered with deciduous or mixed forests.

Distribution. Described from Japan (Honshu island) ( Alexander, 1924), later discovered in Sakhalin and Kuril islands ( Russia) ( Savchenko and Krivolutskaya, 1976). Collected from the elevation 300-750 m in Korea.

Examined material. 1 J, 1 ¥, South Korea, Gangwon-do province , Pyeongchang-gun , Jinbu-myeon , Dongson-ri , Odaesan National Park , N37.74913, E128.57723, altitude 726 m, 2012.06.22, coll. S. Podenas, entomological net; 1 J, 4 ¥¥, South Korea, Gangwon-do province , Pyeongchang-gun , Jinbu-myeon , Dongson-ri , Odaesan National Park , N37.74767, E128.57962, altitude 733 m, 2012.06.22, coll. S. Podenas, entomological net. Also compared with the Japanese specimens including the Holotype, 1 J, Japan, Mt. Takao [san], altitude 1000-2000 feet (approximately 300-600 m), 1922.05.07, coll. Teiso Esaki; paratype, 1 J, Japan, Mt. Takao, 1923.04. 13, coll. T. Esaki; metatype, 1 J, Japan, Korokawa, Echigo, 1954. 05.18, coll. Kintaro Baba; metatype, 1 specimen with broken abdomen, Japan, Korokawa, Echigo, 1954.08.18, coll. Kintaro Baba; metatype, 3 JJ, Japan, Korokawa, Echigo, 1955.05.02, coll. Kintaro Baba.

Notes. First record for Korean peninsula. Four females were mentioned from the southern Kuril Island ( Savchenko and Krivolutskaya, 1976), but their morphology was not described. Korean specimens generally are bigger than those collected in Japan (compared with data from Torii, 1992b).

Figures

Fig. 1. Wings of Antocha (Antocha). A. A. (A.) bifida. B. A. (A.) dentifera. C. A. (A.) dilatata. D. A.(A.) gracillima. E. A. (A.) integra.

Fig. 2. Male genitalia of Antocha (Antocha). A. A.(A.) bifida. B. A.(A.) dentifera. C. A. (A.) dilatata. D. A.(A.) gracillima. E. A. (A.) integra, outer gonostylus, posterior view. F. A.(A.) integra. A, B, C, D, F. dorsal view.

Fig. 3. Ovipositor of Antocha (Antocha). A. A. (A.) bifida. B. A. (A.) bifida, tip of cercus. C. A. (A.) bifida, distal part of hypovalvae. D. A. (A.) dentifera. E. A. (A.) gracillima. F. A. (A.) integra. G. A. (A.) integra, ventral view. A, D, E, F. lateral view.