Matskási István (szerk.): A Magyar Természettudományi Múzeum évkönyve 94. (Budapest 2002)
Papp, L.: Lygistorrhinidae (Diptera) from Taiwan
Description - Measurements in mm: body length not precisely measurable, ca. 3.2, wing length 2.15, wing breadth ca. 0.80, length of proboscis 0.85. All body, including abdominal tergites dark. Male frons linear, facettes comparatively large, round, microtrichia between minute but distinct. Two large lateral ocelli. Antenna all dark, ca. 0.35 mm long. Mesonotal microtrichia short: a sagittal acrostichal and 2 dorsocentral rows are distinct. Only supra-alar and postalar setae of thorax are stronger. Scutellum short (0.07 mm long) with short pale hairs. No stronger setae on legs but femoral and tibial microtrichia are comparatively long and less numerous than in Lygistorrhina spp. (e.g., fore tibia with 8 rows only, probably also mid tibia with 8 rows). Microtrichia are ordered in rows, which are less regular than in Lygistorrhina. Fore tibia 0.525 mm long, fore metatarsus 0.475 mm. Fore and mid tarsi are thin (Fig. 1). No tibial spur on fore tibia, mid tibia with only 1 thin spur, which is only 0.038 mm long. Hind tibia baseball-bat shaped, length 1.29 mm, hind metatarsus 0.725 mm long, breath 0.13 mm. Hind tibia with a 0.225 mm long medial and a 0.10 mm long lateral spur. Wing uniformly brown, not spotted, costal and radial veins light brown, other veins ochre. Vein R, reaches 0.625 of wing. Costal vein is extremely thick from its conjointment with R, to its apex. Costa ends at 2/3 of distance of R 5 and M,. Cu, curved arched; Cu 2 straight, parallel to Cu,, and continued to the curve in Cu,. A, close to and nearly parallel with hind wing margin. Halter light yellow, length (measured) 0.45 mm, actually longer since knob deformed in our specimen. Abdomen very thin and much longer than wing, tergites all dark. Tergite 9 broad and slightly longer than gonocoxites. Sternite 8 broader than in L. chaoi. Gonostylus (Fig. 1) shorter than gonocoxite, at its apical third ca. 1.5 times broader than basally, with widely rounded apex. Gonocoxites and gonostyli without any conspicuous armature. Female unknown. Etymology - This new species is named after Prof. Dr. JENQ-CHUAN YANG, Director General of the Taiwan Forestry Research Institute (Taipei), for his support of our and all former Hungarian entomologist groups, which made studies and collections possible in Taiwan, and for his kind hospitality. Lygistorrhina chaoi sp. n. (Figs 2-3) Type material - Holotype male (HNHM): TAIWAN: Ilan Hsien, Fu-Shan LTER Site, Sep 25, 2000 - light traps, L. Ronkay, L. Peregovits & L. Papp, No. 5. Description - Measurements in mm: body length not precisely measurable (abdomen down-curved), ca. 3.75, wing length 3.12, wing breadth ca. 1.00, length of proboscis 2.30, length of fore tibia 1.45, length of fore metatarsus 1.80. Frons and thorax dull dark brown (blackish), abdomen subshiny with basal (cranial) lateral small round lights pots on T2 to T6 (on T6 minute, indistinct). Eyes with evenly distributed short hairs; also mid ocellus present. Scape, pedicel and four basal flagellomeres yellow, 5th to 8th flagellomeres black, 9th and 10th flagellomeres yellow, 11th to 13th flagellomeres black again and apical (14th and 15th) flagellomeres yellow again.
