Paratanytarsus grimmii ( Schneider 1885 )

Wang, Xinhua & Guo, Yuhong, 2005, Paratanytarsus Thienemann & Bause from China (Diptera: Chironomidae: Tanytarsini), Zootaxa 940, pp. 1-15 : 11-12

Paratanytarsus grimmii ( Schneider 1885) ( Figs. 6–9 )

Lundstroemia parthenogeneticus Freeman 1961: 721

Paratanytarsus grimmii ( Schneider 1885) Langton et al. 1988 (figs. 1–8) Paratanytarsus parthenogeneticus (Freeman) Glover 1973: 417 ( Fig 9 ); Sasa 1979: 2 ( Figs 1–4 ); Wang S & Wang J 1991: 43 (figs. 84–86)

Material examined: 3 females, China: Tianjin City, xii. 2. 2002, Leg. X. Yu.

Female imago (n = 3)

Total length 1.84–2.30, 2.02 mm; wing length (n = 4) 1.43–1.50, 1.46 mm. Total length/wing length 1.23–1.60, 1.39; wing length/length of profemur 2.69–2.84, 2.77. Ground coloration yellow, and thorax with light brown vittae.

Head: Frontal tubercles triangular, basal width 20 µm and about 10 µm high. Antenna ( Fig. 6 ) with 5 flagellomeres, basal segment with double rows of setae. AR 0.23–0.24, 0.23; ultimate flagellomere 62–64, 63 µm long. Temporal setae (n = 2) including 4–5 inner verticals, 1–2 outer verticals and 1 postorbitals. Clypeus with 24–27, 26 setae. Tentorium 100–110, 105 µm long, width 10–14, 12 µm. Palpomere ( Fig. 7 ) lengths (in µm): 20–26, 24; 30–36, 32; 84–90, 87; 92–102, 97; 110–140, 127.

Wing ( Fig. 8 ): VR 1.27–1.37, 1.30 and Cu length 640–656, 645 µm.

Thorax: Acrostichals 6–9, 7; dorsocentrals 6; scutellars 5–6, 6; prealars 1.

Legs: Front tibia spur about 10–14, 12 µm long. Spurs of middle tibia 14–20, 17 and 14–18, 16 µm, of hind tibia 20–22, 21 and 16–17, 16 µm long. Combs of middle tibia composed of 10–12, 11 and 8–10, 9 teeth, of hind tibia 12–14, 13 and 8–10, 9 teeth. Lengths (in µm) and proportion of legs are given in Table 6.

fe ti ta1 ta2

P1 504–540, 527 376–400, 387 544–560, 551 264–272, 269 P2 528–560, 549 480 216–224, 220 120–130, 126 P3 616–640, 632 592–608, 600 344–360, 352 216

ta3 ta4 ta5 LR

P1 224–230, 226 144 88–95, 91 1.38–1.46, 1.43 P2 104 60–72, 65 56 0.45–0.47, 0.46 P3 190–200, 197 90–96, 94 72–80, 77 0.57–0.59, 0.58 Genitalia ( Fig. 9 ): Tergite IX with 22–31, 26 setae. Gonocoxite 24–30, 27 µm long. Gonapophyses length VIII 26–28 µm, without long setae. Cercus 56–68, 61 µm long and 22–26, 25 µm wide, with 21–26, 24 long setae. Spermatheca length 54–65, 60 µm, width 30–34, 32 µm. Gonapophyses IX notum 28–44, 35 µm long.

Distribution: This parthenogenetic species is known from the Palaearctic and Australasian Regions. It is known from Palaearctic China (Liaoning Province and Tianjin City).

Figures

FIGURES 5 – 9. 5. Hypopygium of Paratanytarsus tenuis (Meigen). 6 – 9. Paratanytarsus grimmii (Schneider), female. 6. Antenna. 7. Palpomeres. 8. Wing. 9. Genitalia.

FIGURES 1 – 4. 1. Hypopygium of Paratanytarsus dissimilis (Johansen). 2. Hypopygium of Paratanytarsus inopertus (Walker). 3. Hypopygium of Paratanytarsus paralauterborni sp. n. 4. Hypopygium of sp. A.