Libnotes (Libnotes) amatrix ( Alexander, 1922 )

Podenas, Sigitas, Byun, Hye-Woo & Kim, Sam-Kyu, 2015, Limoniinae crane flies (Diptera: Limoniidae) new to Korea, Journal of Species Research 4 (2), pp. 61-96 : 83-84

publication ID	https://doi.org/ 10.12651/JSR.2015.4.2.061
persistent identifier	https://treatment.plazi.org/id/E82987F5-A751-4A5C-FF55-9B284842FAA5
treatment provided by	Felipe
scientific name	Libnotes (Libnotes) amatrix ( Alexander, 1922 )
status

Treatment

Libnotes (Libnotes) amatrix ( Alexander, 1922) View in CoL

Limnobia amatrix Alexander, 1922: 181 View in CoL .

Libnotes (Libnotes) amatrix Savchenko and Krivolutskaya, 1976: 120 View in CoL ; Savchenko, 1983: 112.

General coloration yellowish to grayish brown. Body length of male 5.79.5 mm, female 6.57.6 mm. Wing length of male 9.512.0 mm, female 9.0 10.8 mm.

Head dark brown, covered with dense silvery gray pruinosity, which is especially dense along eye margin and on dorsal surface. Vertex dorsally with narrow dark medial line. Anterior vertex very narrow, yellowish brown, covered with sparse erect grayish setae. Eyes large, ventrally nearly reaching each other. Length of male antennae 1.552.10 mm, if bent backwards, ending before wing base. Antenna of female 1.651.90 mm long. Scape brown, covered with sparse gray pruinosity and few long setae. Pedicel oval, yellow. Flagellum 12segmented. Flagellomeres light yellow, just threefour distal segment slightly infuscated. Basal segments short, distal slightly elongate. Apical flagellomere nearly twice as long as preceding segment, wider at base, distinctly narrowed at distal end. Verticils on dorsal surface of male antenna nearly twice as long as respective segments, verticils of female antennae very short, indistinct. Pubescence, covering segments short and whitish. Rostrum brown at base, turning dark brown towards distal end, semipolished. Palpus dark brown, covered with erect blackish setae. Mouth parts same color as palpus.

Thorax obscure yellow. Pronotum large, strongly elongate, greenish yellow in fresh specimens, brownish yellow in old specimens. Mesonotal prescutum brownish yellow with two reddish brown stripes. Darker specimens have remains of lateral stripes. Central stripes separated by narrow whitish yellow line. Scutal lobe conspicuously marked with brown, the lateral area yellowish. Scutellum brown, the median portion and posterior margin obscure yellow. Mediotergite dark brown, the sides paler. Pleura brownish yellow with a narrow, dorsal, longitudinal, brown stripe extending from the cervical sclerites to beneath the wingroot. Male wing slightly narrower than female wing. Wing ( Fig. 7B, C View Fig ) tinged with pale yellow. Costal cell entirely dark brown, subcostal cell yellow between dark spots. Stigma distinct, large, “U”shapely arched. Distinct brown pattern of male wing as follows: costal cell entirely brown, subcostal cell brown at wing base, at base of Rs and at tip; wing base with brown spot; whole radial sector surrounded by distinct brown area; darkenings surround whole cord and distal margin of discal cell; small rounded spots along veins beyond cord; darkened posterior part of cell r 1 at wing margin; dark spots surroud branches of M and CuA 1 at wing margin; brown area extends along whole frontal margin of cubital vein, distal part of Cu surrounded by brown from both sides; dark spots at tips of both anal veins; such spot also extends along posterior margin of cell a 2. Wing pattern of female less intense, some small spots, especially on distal longitudinal veins reduced. Veins yellow in light areas, but dark brown in darkened areas. Venation very similar in both sexes: Sc long, Sc 1 reaching wing margin far beyond branching point of Rs, Sc 2 close to Sc 1 tip. Rs distinctly arched. Vein R 2 more than twice its own length from the tip of R 1. R 1 distinctly arcuated at branching point of R 2. Both branches of Rs long and nearly parallel to each other, tips slightly bent posteriorly. Crossvein rm distinct. Discal cell very long, slightly widened distally, about 3.75 times as long as wide. Basal deflection of CuA 1 its own length beyond branching point of M, at about onesixth of discal cell’s length. Both anal veins slightly bent towards posterior wing margin. Anal angle mediumsized, wide. Length of male halter 1.351.60 mm, that of female 1.301.40 mm. Stem of halter yellow, base whitish, knob dark brown. Coxae yellow. Frontal coxa slightly infuscated. Trochanters obscure yellow. Femur dark brown, slightly widened at distal end, with conspicuously light yellow tip. Tibia and tarsus dark brown. Basal tarsomere somewhat lighter. Male femur I: 6.97.4 mm long, II: 7.48.0 mm, III: 7.710.0 mm; tibiae I: 8.89.3 mm, II: 7.88.6 mm, III: 8.111.0 mm; tarsus I: 7.67.7 mm, II: 5.96.0 mm, III: 5.56.9 mm long. Female femur I: 6.27.5 mm long, II: 6.68.3 mm, III: 7.0 8.5 mm; tibiae I: 7.89.1 mm, II: 7.48.7 mm, III: 7.4 8.7 mm; tarsus I: 6.87.7 mm, II: 5.45.8 mm, III: 5.35.4 mm long. Claw dark brown, with three small subbasal spines.

Abdomen brown, distal segments dark brown. Female abdomen yellowish at base, fresh specimens with greenish basal segments. Tergites and sternites covered with erect golden setae. Male genitalia ( Fig. 8A View Fig ) brown. Ninth tergite simple, posterior margin widely rounded. Gonocoxite slightly elongate, wider at base, narrower at apex, with elongate setose ventromesal lobe. Outer gonostylus narrow, sclerotised, very tip slightly curved and sharply pointed. Inner gonostylus with wide basal part, distal end getting distinctly narrower; rostral lobe long and narrow, slightly sinuous, bearing single subbasal spine; additional narrow lobe starts at the middle of segment and bears two long apical setae. Paramere distinctly narrow ed towards distal end, acuteapexed. Penis simple, elongate with bifid apex. Ovipositor ( Fig. 8F View Fig ) generally same color as distal abdominal segments. Cercus short, dark brown, bidentate at tip. Hypovalvae long, darkened basally, nearly reaching tip of cercus, distal end with minute subapical teeth on dorsal surface. Vaginal apodeme elongate, reaching beyond base of cercus.

Elevation range in Korea. Specimens are known to occur at altitudes from about 350 m to 800 m.

Period of activity. Adults are flying from late June through late July in South Korea.

Habitats. The species was collected by the author in dense mixed forests on slopes to small and mediumsized rivers.

General distribution. The species is known from Far East of Russia and Japan.

Examined materials ( Fig. 10J View Fig ): 1$ (in ethanol), S. Korea, Gangwondo, Pyeongchanggun, Yongpyeongmyeon, Nodongri, Mt. Gyebangsan, N37.69775, E128. 47627, altitude about 800 m, 2008.07.19, J.D. Yeo et al., malaise trap (NIBR) ; 1♂ (in ethanol), S. Korea, Gangwondo, Pyeongchanggun, Jinbumyeon , Dongsanri , Woljeongsa , Odaesan National Park , N37.73920, E128. 59398, altitude 794 m, 2012.06.22, S. Podenas ( NIBR) GoogleMaps ; 1♂, 1$(in ethanol), S. Korea, Gangwondo, Pyeongchanggun, Jinbumyeon , Topdongri , Odaesan National Park , N37.72722, E128.55222, 2012.06.28 07.31, S.J. Park & I.J. Hur, malaise trap ( NIBR) GoogleMaps ; 1 specimen with unclear sex (in ethanol), S. Korea, Jeollanamdo, Guryegun, Tojimyeon, Naedongri , N35.26580, E127.58128, altitude 378 m, 2013.05.11, S. Podenas, collected from spider web ( NIBR) GoogleMaps .