Microchironomus fuscitarsus ( Guha & Chaudhuri, 1979 )

Mukherjee, Bindarika & Hazra, Niladri, 2023, Taxonomic studies on Harnischia complex from India (Diptera: Chironomidae), Zootaxa 5278 (2), pp. 239-263 : 257-260

Microchironomus fuscitarsus ( Guha & Chaudhuri, 1979)

GenBank accession number. OM827255

Microchironomus fuscitarsus ( Guha & Chaudhuri, 1979) : Hazra, Niitsuma & Chaudhuri, 2016: 80; Chaudhuri & Chattopadhyay, 1988: 175

Cryptochironomus fuscitarsus Guha & Chaudhuri, 1979: 95

Material examined. 8 males, labelled ‘ Microchironomus fuscitarsus ( Guha & Chaudhuri, 1979) , India, West Bengal, Burdwan [23.2393° N, 87.8512° E], 05.ii.2021, 10.v.2021, 6.vii.2021, 03.ii.2022, Coll. N. Hazra’ , 2 males labelled ‘ Microchironomus fuscitarsus ( Guha & Chaudhuri, 1979) , India, West Bengal, Birbhum (23.668° N, 87.682° E), 03.iii.2021, Coll. B. Mukherjee’ , 3 males, labelled ‘ Microchironomus fuscitarsus ( Guha & Chaudhuri, 1979) , India, West Bengal, Burdwan [23.2446° N, 87.8496° E], 05.iii.2022, 10.iv.2021, Coll. B. Mukherjee’ , 3 males, ‘ Microchironomus fuscitarsus ( Guha & Chaudhuri, 1979) , India, West Bengal, Jalpaiguri [23.71° N, 88.76° E], 06.iv.2022, Coll. P. Hui’ .

Remarks ( Figs. 7A–C ). Guha & Chaudhuri (1979) described adult male of this species as Cryptochironomus fuscitarsus while Chaudhuri & Chattopadhyay (1988) described immature stages of this species and transferred this species into the genus Microchironomus . We noticed that few characters of the original description of the adult male are erroneous. Revised characters are: anal tergite band V shaped; superior volsella tapered gradually bearing 3 setae (1 seta at apex and 2 at sub-apex), 57–60 µm long; anal point medially swollen, 76–80 µm long, parallel shaped; laterosternite IX with 3–4 setae on each side of anal point.

Distribution. India, West Bengal.

Figures

FIGURE7.Adultmale Microchironomusfuscitarsus(Guha &Chaudhuri,1979).A.Hypopygium(photograph),B.Hypopygium, scale 0.01 mm, C. Superior volsella, scale 0.01 mm.