Odinia thaii L. PAPP, 2006

Papp, L., Merz, B. & Földvári, M., 2006, DIPTERA OF THAILAND A summary of the families and genera with references to the species representations, Acta Zoologica Academiae Scientiarum Hungaricae 52 (2), No. 2, pp. 97-269 : 192-194

publication ID	https://doi.org/ 10.5281/zenodo.12586111
persistent identifier	https://treatment.plazi.org/id/03A487CE-FFCD-F57D-E834-FC08D00EFD7D
treatment provided by	Felipe
scientific name	Odinia thaii L. PAPP
status	sp. nov.

Treatment

Odinia thaii L. PAPP View in CoL , sp. n.

( Figs 76 View Figs 76–78 , 133 View Figs 133–135 )

Holotype male ( HNHM): THAILAND: Trang Prov., Thung Khai Botanic Garden , primary lowland rainforest,, along the “Nature Trail”, Nov 13, 2004, No. 29, leg. L. PAPP & M. FÖLDVÁRI.

Measurements in mm: body length 2.15 mm, wing length 2.06, wing breadth 0.92.

Head ( Fig. 76 View Figs 76–78 ) broad. Frons and face unicolorous light grey owing to thick microtomentum. Interfrontalia darker grey, when seen in light from behind. Postgena slightly darker grey.

Scape and pedicel black, first flagellomere as high as long, apex rounded. Apical 1/2 of the medial surface of first flagellomere grey fumose; grey fumosity almost complete on the lateral side. Arista with minute cilia, basal two aristomeres thickened. Frons grey, bare but with the characteristic setae only ( Fig. 76 View Figs 76–78 ). Frontal setae strong (as usual in Odinia ). Ocellar setae 0.22mm, postocellar setae longer than ocellars, 0.25mm. Anterior medioclinate fronto-orbital seta as long as posterior reclinate fronto-orbital. Palpus broad, black, with 3 thick though not very long setae ventrally. One upcurving peristomial behind vibrissa, 1 downcurving genal seta medially, as thick as vibrissa, and several shorter genal setae posteriorly.

Mesonotum unicolorous darker grey, light (almost white) microtomentose, 1+3 (!) pairs of long dc, acrostichal microchaetae not well ordered in 4 rows. Intra-alar microchaetae comparatively long, an intra-alar macrochaeta also present. An extremely long supra-alar plus a short prealar present. Prescutellar pair medium-long. Scutellum concolorous with mesonotum. Pleura grey, only dorsal edge of katepisternum at setal bases darker, greyish brown. Anterior katepisternal 0.40 mm long, middle and posterior pairs only slighly longer than half as long. Anepisternum bare.

Legs thick. Femora dark grey, femoral apices, tibial bases yellow; all tibiae with a broad submedial and an apical brown bands each. Tarsi all darkened, basitarsi yellowish basally. Hind femur extremely thick with a long black anteroventral seta at apical 1/4. Mid tibia with two long ventroapicals.

Wing ( Fig. 133 View Figs 133–135 ) light greyish brown, veins yellow, but costa dark before conjointment with R 1 on a section of 0.12 mm and also R1 dark on apical 0.11 mm; also R-M cross-vein darker. Vein R 4+5 straight and terminates at wing apex. Cross-vein dM-Cu complete on right wing, on the left wing only dorsal half present, this cross-vein not dark bordered. Terminal section per intra-crossvein section of M 0.804 mm and 0.228 mm, ratio 0.284. Halteres yellow.

Abdomen grey but caudal half of tergites 2 to 4 darker brown, which divided into a medial pair of spots and lateral stripes on tergite 4.

Male genitalia comparatively small, epandrium grey. I did not prepare the abdomen and genitalia of this unique specimen.

Female unknown.

Odinia thaii sp. n. keys to O. boletina (ZETTERSTEDT, 1848) in KRIVO-

SHEINA’ s (1979) key, which is still the most comprehensive key for the Palaearctic

0.2 mm for Figs 77–78 View Figs 76–78

species of Odinia (although since that time some additional spp. were described; however, O. photophila PAPP, 1977 and O. trifida CARLES-TOLRÁ, 1996 are not related). Odinia thaii sp. n. is an easily recognisable species. Although I am convinced that it is a true Odinia sp. , it has only 3 pairs of postsutural dorsocentrals, which is a unique character in Odinia . If we overlook this character, the new species is similar to O. boletina , but O. boletina has a double-striped pleura, blackened apex of first flagellomere, dotted (not striped) abdominal tergites, i.e. only its wing is most similar. The hitherto known single Oriental sp., O. formosipennis FREY, 1961 is not closely related.