Pseudorthocladius (Pseudorthocladius) digitus Ren, Lin & Wang 2014

Adult male (n = 1). Total length 2.43 mm. Wing length 1.55 mm. Total length/wing length 1.57. Wing length/length of profemur 2.54. Coloration. Head, abdomen, legs brown; thorax with yellow ground with brown postnotum and preepisternum. Head. Antenna with 13 flagellomeres. Terminal flagellomere length 300 μm. AR 0.74. Temporal setae 7, including 4 inner verticals, 3 outer verticals. Clypeus with 2 setae. Tentorium 110 μm long, 24 μm wide. Palpomere lengths (in μm): 29, 31, 60, 108, –. Wing (Figure 14). Anal lobe reduced. Brachiolum with 1 seta; R with 7 setae; R1 with 1 seta; other veins bare. Squama bare. Costa extention 41 μm long. Cu1 slightly curved. Thorax (Figure 15). Antepronotum with 5 lateral setae, dorsocentrals 7, acrostichals 2, prealars 5. Scutellum with 9 setae. Legs. Pulvilli present. Spur of fore tibia 50 μm long, spurs of mid tibia both 29 μm long; hind tibia with a long spur 60 μm long, a short spur 29 μm long and comb composed of 12 spines. Width at apex of fore tibia 43 μm, of mid tibia 36 μm, of hind tibia 45 μm. Lengths (in μm) and proportions of legs as in Table 5. Lengths (in μm) and proportions of legs of Pseudorthocladius (Pseudorthocladius) digitus sp. n. p1 p2 p3 fe 610 660 700 ti 650 660 800 ta1 410 264 450 ta2 250 146 240 ta3 156 101 180 ta4 96 67 74 ta5 72 60 72 LR 0.63 0.25 0.56 BV 2.91 4.23 3.44 SV 3.07 5.00 3.33 BR 2.63 1.36 2.78 Hypopygium (Figures 16–18). Laterosternite IX with 3 setae. Anal point (Figure 18) rounded and reaching beyond caudal margin of Tergite IX, maximum width 22 μm, with 10 long marginal setae. Phallapodeme 48 μm long. Transverse sternapodeme 50 μm long with small oral projection. Virga absent. Gonocoxite 178 μm long with 6 strong setae along inner margin. Inferior volsella (Figure 18) finger–shaped, parallel–sided and rounded in the apex, bearing some weak setae along the margin and covered by microtrichia. Gonostylus 84 μm long, narrow at base, widen to the distal, with 3–4 setae along inner margin. Crista dorsalis visible, relatively low. Megaseta 10 μm long. HR 2.11. HV 2.89. Female, pupa and larva unknown.

The new species is known from Fujian Province in Oriental China.