Cladotanytarsus conversus (Johannsen)

Wang, Xinhua & Guo, Yuhong, 2004, A review of the genus Cladotanytarsus Kieffer from China, with the description of three new species (Diptera: Chironomidae: Tanytarsini), Zootaxa 750, pp. 1-19 : 4-5

Cladotanytarsus conversus (Johannsen) ( Fig. 3)

Tanytarsus conversus Johannsen 1932: 543

Cladotanytarsus conversus (Johannsen) ; Chaudhuri & Chattopadhyay 1990: 167, Datta, Mazumdar & Chaudhuri 1992, Langton & Garcia 2000: 199 ( Figs 1–6 ), Sublette & Sublette 1973: 416, Wang & Zheng 1993: 6 ( Figs. 12, 13)

Material examined. 1 male (04812), Yunnan Province, Menglun County, VI.12.1987.

Diagnosis. Spinules of anal point absent. Abdomen banded.

Male imago (n =1).

Total length 2.00 mm. Wing length 1.21 mm. Total length/wing length 1.65. Wing length/ profemur length 2.29. Ground coloration light brown, with brown vittae. First 5 abdominal segments pale, the following segment light brown; metanotum infuscate.

Head. Ultimate flagellomere 344 µm long. AR 0.83. Temporals: 4 inner, 1 outer verticals and without postorbitals. Clypeus with 12 setae. Tentorium 88 µm long, width 20 µm. Palpomere lengths (in µm): 26; 32; 80; ­; 144.

Wing. VR 1.27 and Cu length 580 µm. Membrane with only one seta in cell R4+5. Setae on veins: R 6; M1+2 22.

Thorax. Acrostichals 5; dorsocentrals 9; prealars 1. Scutellum with 3 setae.

Legs. Spur of front tibia 10 µm. Spurs of middle tibia 20 µm long, and of hind tibia 28 and 22 µm long. Combs of middle leg composed of 12 free teeth, of hind leg composed of 8 and 10 free teeth.

Lengths and proportion of legs (in µm):

Hypopygium ( Fig 3). Tergite IX with 7 setae at base of anal point. Anal point broad and with constricted apex, 25µm long, without spinules between crests. Phallapodeme 60 µm long. Transverse sternapodeme 64µm long. Gonocoxite 96 µm long. Superior volsella 26 µm long. Digitus 28 µm long, with rounded apex. Inferior volsella 50 µm long. Stem of median volsella 30 µm long, lamellae not extending beyond inferior volsella. Gonostylus 62µm long. HR 1.55; HV 3.23.

Distribution. This species is distributed in Indonesia (Sumatra), India, Thailand, France, Greece and South China (Yunnan Province), thus having a Palaearctic and Oriental distribution.

Cladotanytarsus digitalis Wang & Zheng ( Fig 4)

Cladotanytarsus digitalis Wang & Zheng 1993: 3 ( Figs. 3, 4)

Material examined. Holotype male (BDN. No. 04818), China, Ningxia Autonomus Region, Liupan Mountain, Erlong River, 35.4ºN / 106.2ºE, VIII.7.1987. Leg. X. Wang. The species was described in detail by Wang & Zheng 1993: 3 ( Figs. 3, 4).

Diagnosis. Anal point broad, with 2 spinules. Superior volsella slightly triangular, with elongate apex. Digitus long, with expanded apex.

Distribution. ThisspeciesisknownfromNingxiaAutonomicRegion(PalaearcticChina).

Figures

FIGURES 1 – 2. Cladotanytarsus bisetus sp. n. Holotype, male imago: 1. Wing, 2. Hypopygium.