A new species of Antocha Osten Sacken, 1860 (Diptera: Limoniidae) from Sichuan China Author Markevičiūtė, Radvilė Author Podenas, Sigitas Author Saldaitis, Aidas Author Bernotienė, Rasa text Zootaxa 2019 2019-08-27 4661 1 118 132 journal article 25906 10.11646/zootaxa.4661.1.5 3d7e1f7b-b917-4ca8-b53b-467f90e99de8 1175-5326 3378580 0D02E067-9741-45D3-9313-C7E4B78EC355 Antocha ( Antocha ) nebulipennis immaculata Alexander, 1938 ( Figs 15 , 37–43 ) Antocha ( Antocha ) nebulipennis immaculata Alexander, 1938a: 319 (description); 1963: 337. Diagnosis. Medium sized, brownish-gray species with light brownish-white wing, pterostigma light brown, caudal margin of tergite 9 with two rounded projections, gonocoxite irregular oval-shaped, without extra lobe, outer gono- stylus blackened with narrow apex. Type material examined. HOLOTYPE , male (slide mounted): W. China , Mupin , Szechwan , 3500 m , VI– 30–1929 , D.C. Graham ( USNM ) . Metatype, male (slide mounted), W. China , Kina, Kansu , Kung-tze-tagpa Zalok Valley , Min-shan, 3000 m , VII–20, 1930 , D. Hummel ( USNM ). Additional material examined. 1 male (in ethanol): China , W. Sichuan , road Ya’an / Kangding , Erlang Shan Mt. , altitude 2100 m , N29°52.391′ , E102°18.593′ , 2010.IV.10–11 , coll. A. Saldaitis ( NRC ). Redescription. Adult, male ( N= 3). General body colour brownish-gray, abdomen brownish-gray. Body length 6.1 mm . Wing length 8.1 mm . Head . Generally dark gray, covered with grayish pruinosity. Antenna ( Fig. 37 ) 1.2 mm long; scape elongate, nearly cylindrical, brownish-gray; pedicel round and short, brownish-gray; flagellum 14-segmented, generally brownish-gray; flagellomeres elongate, decreasing towards apex; apical segment oval, approximately as long as penultimate. Rostrum, palpus and mouth parts brownish-gray. Thorax. Generally brownish-gray. Pronotum brown, covered with grayish pruinosity. Ground colour of me- sonotal prescutum brownish-gray. Three prescutal stripes distinct. Scutum brownish-gray. Scutellum brown. Me- diotergite dark brown, covered with grayish pruinosity. Pleuron brownish-gray except ventral light brownish-gray part of katepisternum. Wing ( Fig. 38 ) light brownish-white; pterostigma oval, light brownish-gray; veins generally brownish, but yellowish at wing base. Venation: vein Sc long, ending before branching point of Rs ; radial sector long and straight; cell dm comparatively small, approximately twice as long as wide; veins A 1 and CuP strongly divergent; tip of A 1 reaches distinctly beyond the level of Rs origin; anal angle large, nearly right-angled. Halter 0.9 mm long, base of stem pale brownish-gray, remaining part of stem and knob pale brownish. Legs: coxa light brown, slightly darkened at base, darkening more intense on fore and less distinct on posterior coxae; trochanters light brown; femora and tibiae brown with narrowly darkened distal ends, three basal tarsomeres light brown with darkened distal end, remaining tarsomeres dark brown; legs covered with semi-erect, black setae. Length of femora: I: 5.7 mm , II: 6.3 mm , III: 6.6 mm ; tibiae: I: 6.4 mm , II: 6.3 mm , III: 6.8 mm ; tarsi I: 5.3 mm , II: 4.7 mm , III: 4.8 mm . FIGURES 37–42. Antocha ( Antocha ) nebulipennis immaculata , male. 37. antenna; 38. wing; 39. genitalia, dorsal view; 40. sternite 9; 41. tergite 9; 42. genital structures and aedeagus, dorsal view. Abdomen . Generally dark brownish-gray, pruinose. Tergites brownish gray, posterior margin darkened. Ster- nites brown, pruinose, lighter than tergites. Male hypopygium ( Fig. 39 ) brownish-gray, slightly lighter than abdo- men. Tergite 9 ( Fig. 41 ) transverse, conspicuously bilobed, caudal margin with two rounded projections. Sternite 9 ( Fig. 40 ) oblong with rounded apex. Gonocoxite irregular oval-shaped, without mesal lobe. Outer gonostylus dis- tally blackened, apex not abruptly narrowed. Inner gonostylus, arcuated, apex dilated into weak spatula, densely set with short curved spinous setae. One pair of simple, sabre-shaped parameres, tip of paramere below tip of aedeagus. Aedeagus ( Fig. 42 ) narrow with lateral flanges. Elevation range in China . Specimens were collected at 2200–3500 m . Period of activity in China . Adults are flying from April through July. Habitat. River and small streams surrounded by virgin mixed forest ( Fig. 43 ), dominated by various broadleaved trees such as oaks ( Quercus dentata , Q. glauca ), poplars ( Populus cathayana , P. simonii ), elm ( Ulmus parvifolia ), rhododendrons ( Rhododendron brachycarpum , R. dauricum ), and bamboos ( Phyllostachys ssp., Borinda ssp., Fargesia spp.). FIGURE 43. Habitat of Antocha ( Antocha ) nebulipennis immaculata . Distribution. China ( Sichuan ), Myanmar . Remarks. A redescription of this species is provided to add several features not mentioned in the original de- scription; i.e., characters of pedicel, rostrum, palpus, sternite 9, aedeagus. Some morphological features of A. ( A .) nebulipennis immaculata ( Figs 45, 48, 51, 54 ) are similar to other species: A. ( A .) fortidens ( Figs 44, 47, 50, 53 ) known from China and A. ( A .) nebulipennis nebulipennis ( Figs 46, 49, 52, 55 ) known from China , India , Malay- sia and Taiwan . These three species have similar tergite 9 ( Figs 47, 48, 49 ) where the caudal margin bearing two rounded projections. The gap between the two rounded projections of tergite 9 in A. ( A .) nebulipennis immaculata ( Fig. 48 ) is wider than in A. ( A .) fortidens ( Fig. 47 ) and A. ( A .) nebulipennis nebulipennis ( Fig. 49 ). The apex of the gonocoxite is not narrowly elongate in A. ( A .) nebulipennis immaculata ( Fig. 45 ) and in A. ( A .) nebulipennis nebulipennis ( Fig. 46 ), compared to the narrowly elongate apex of gonocoxite in A. ( A .) fortidens ( Fig. 44 ). The outer gonostylus in these species is curved with a narrow apex, but in A. ( A .) nebulipennis immaculata ( Fig. 51 ) it is shorter than in A. ( A .) fortidens ( Fig. 50 ) and A. ( A .) nebulipennis nebulipennis ( Fig. 52 ). The outer gonostylus in A. ( A .) fortidens ( Fig. 50 ) bears a strong tooth on the outer margin before the apex and in A. ( A .) nebulipennis nebulipennis ( Fig. 52 ) the outer gonostylus is abruptly narrowed, without a strong tooth. The wing in A. ( A .) nebulipennis immaculata ( Fig. 54 ) has a pale pterostigma, and in A. ( A .) fortidens ( Fig. 53 ) and A. ( A .) nebulipennis nebulipennis ( Fig. 55 ) the pterostigma is darker, brownish-gray.