A review of the subgenus Eudactylocladius (Diptera: Chironomidae) from China Author Kong, Fanqing Author Saether, Ole A. Author Wang, Xinhua text Zootaxa 2012 3341 46 53 journal article 10.5281/zenodo.281401 ff53e976-9081-4400-8cb6-93bfd3381cc7 1175-5326 281401 Orthocladius ( Eudactylocladius ) intectus sp. n. ( Figs 7–9 ) Type material. Holotype male (BDN No. 12339), CHINA : Sichuan Province, Luding County (subtropical mountain area), 7.vi.1996 , sweep net, X. Wang. FIGURES 7–9. Orthocladius ( Eudactylocladius ) intectus sp. n. , 7—tentorium, stipes and cibarial pump; 8—wing; 9—hypopygium. Diagnostic characters. The species can be separated from other members of the subgenus by having an bare and nearly parallel-sided anal point, and low AR (0.77). Etymology. From Latin, intectus , naked, referring to the bare anal point. Description. Male (n = 1). Total length 3.45 mm . Wing length 2.13 mm . Total length / wing length 1.62. Wing length / length of profemur 2.21. Coloration. Head brown. Antenna, legs and abdomen yellowish brown. Thorax dark brown. Head . AR 0.77. Ultimate flagellomere 480 Μm long. Temporal setae 10, including 2 inner verticals, 3 outer verticals and 5 postorbitals. Clypeus with 14 setae. Cibarial pump, tentorium and stipes as in Fig. 7 . Tentorium 113 Μm long, 37 Μm wide. Stipes 139 Μm long, 52 Μm wide. Palpomere lengths (in Μm): 30, 53, 115, 108, 153. Length ratio of palpomeres 5/3 1.33. Wing ( Fig. 8 ). Anal lobe well developed. VR 1.20. Costal extension 56 Μm long. R with 10 setae, other veins bare. Squama with 20 setae. Thorax. Antepronotum with 5 setae. Dorsocentrals 10, acrostichals 9, prealars 4. Scutellum with 9 setae. Legs. Spur of fore tibia 55 Μm, spurs of mid tibia 24 Μm and 22 Μm long, of hind tibia 66 Μm and 27 Μm long. Comb of 10 setae, shortest seta 26 Μm, longest seta 53 Μm. Width at apex of fore tibia 40 Μm, of mid tibia 44 Μm, of hind tibia 57 Μm. Pseudospurs present on ta1 and ta2 of mid and hind legs, 22–26 Μm long. Sensilla chaetica absent. Lengths (in Μm) and proportions of legs in Table 3.

TABLE 3. Lengths (in	µm) and	proportions of legs segments	of male O. ( E. )	intectus sp. n. (n = 1).
fe	ti	ta1	ta2	ta3	ta4
p1 960	1200	775	490	330	215
p2 980	1060	450	280	210	130
p3 1080	1275	680	370	270	160
ta5	LR	BV	SV	BR
p1 145	0.64	2.49	2.79	2.05
p2 120	0.43	3.36	4.53	2.33
p3 140	0.53	3.23	3.46	2.43

Hypopygium ( Fig. 9 ). Tergite IX with 7 setae. Anal point slender, nearly parallel-sided, with rounded apex, free from setae, 20 μm long, 8 μm wide. Laterosternite IX with 9 setae. Phallapodeme 92 Μm long, transverse sternapodeme 150 Μm long, oral projections well developed. Gonocoxite with week and short microtrichia, 237 Μm long. Gonostylus 120 Μm long, with long and low crista dorsalis. Megaseta 9 Μm long. HR 1.98, HV 2.88.