Platyroptilon jarujini 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 : 134-136

Platyroptilon jarujini L. PAPP , sp. n.

( Figs 29–31 )

Holotype male ( HNHM, right wing, left two apical flagellomeres, right apical flagellomere lost, abdomen with genitalia in a plastic microvial with glycerol): THAILAND: Trang Prov., Khao Chong Botanic Garden , rainforest, Nov 22, 2004, No. 43, leg. L. PAPP & M. FÖLDVÁRI. Its body length was measured before genitalia preparation and b. l. is described on pin card under the specimen.

Measurements in mm: body length 3.67, wing length 2.18, wing breadth 0.88.

Face and other parts of head brown. Three ocelli, laterals much larger than anterior one, lateral oc separated from eye margin by a distance of 10/7 of their diameter. Antennae ( Fig. 29 ) all dark brown but medial surface of basal prolonged flagellomere more yellowish. Palpi minute, black, shorter than 0.05 mm.

Scutum and scutellum dark brown, except for humeral callus, anepisternum centrally brown, like kapepisternum and dorsal part of laterotergite, other parts of pleura yellowish, metepimeron and metanotum dark again. Lateral part of antepronotum, proepisternum and proepimeron dark brown. Anepisternum as well as laterotergite bare.

Legs mostly dirty yellow, apices of cx2 and cx3, bases and apices of mid and hind femora as well as that of mid and hind tibiae blackened. Tibial spurs 1:1:1, lateral and medial combs well developed on all tibiae, except medial one of t1.

Wing light brownish, subcostal and radial veins thickened and darker brown, other veins lighter brown. Costa continued to 3/5 of R4+5-M1 section, ends abruptly. No sign of Sc2 vein. Costal sections: 0.62: 0.087: 0.45 mm. R4 0.19 mm, i.e. almost twice longer than R1-R4 costal section. M1–2 stalk 0.24 mm, M1 1.05 mm. Cu2 continued to wing margin but 0.15 mm. Knob of haltere black, stalk white.

Abdominal tergites dark with light anterior margin on T3 to T6. Sternites yellow but caudal margins dark brown. Tergite 9 ( Fig. 30 ) shield-shaped with rather long setae. Gonocoxite caudally with short thick setae. Cerci and proctiger seem much larger than those of P. papua Matile. Gonostylus ( Fig. 31 ) not large at base (as in papua ), not broad but rather narrow at base, with long setae; there is a double tooth at 1/3 of medial margin and there with long thick setae.

for Fig. 31

The new species surely belongs to the P. collessi MATILE ( Australia), kirkspriggsi MATILE (Sulawesi), papua MATILE , scurror MATILE (Sulawesi) group with its 11 prolonged flagellomeres (12 flagellomeres in all). Unfortunately the apical flagellomere is lost on holotype, but its antenna (longest prolongation definitely longer than half antennal length) resembles more to that of P. zernyi EDWARDS (fig. 894 of MATILE 1990), than to that of P. collessi , to which it is related (Fig. 889 of MATILE). There was an undescribed “espèce malaise” in MATILE’ s (1990) monograph. Otherwise the genus was not recorded from the continental Asia (1 sp. each from P.N.G. and Queensland, and 2 spp. from Sulawesi). Its closest relative is probably P. papua , but rather smaller (wing length 2.18 mm vs 2.8 mm). Its tergite 9 is much different and also details of gonostylus are different.

Etymology. I name this new species to the honour of Prof. Dr. JARUJIN NABHITABHATA (Klong

Luang, Phatumthani , Thailand).

Figures

Figs 29–33. 27–29 = Platyroptilon jarujini sp. n., holotype male: 29 = antenna (del. A. SZAPPANOS), 30 = tergite 9, 31 = gonostylus, subventral view.32–33 = Setostylus alienus sp. n., paratype male: 32 = gonocoxite and gonostylus, ventral view, 33 = tergite 9. Scales: 0.2 mm for Figs 30, 32–33, 0.1 mm