Shangomyia impectinata Saether & Wang, 1993

Cranston, Peter S., 2003, The Oriental Genus Shangomyia Saether & Wang (Chironomidae: Diptera): Immature Stages, Biology, Putative Relationships And The Evolution Of Wood Mining In Chironomid Larvae, Raffles Bulletin of Zoology 51 (2), pp. 179-186 : 180-183

Shangomyia impectinata Saether & Wang, 1993

Shangomyia impectinata Saether & Wang, 1993: 190 .

Material examined (all slide mounted in Euparal). – 2L, Le, 22 Pe, Pe /m, m, BRUNEI: Temburong District, Kuala Belalong Field Study Centre , Sungai Belalong , 4 33’N 115 09’E, coll. Cranston, Aug.1995 ( BMNH, 17Pe ANIC); Le, Pm, INDONESIA: Kalimantan, Kelian River , coll. Yule, no date ( ZRC); 1 male, 1 female, THAILAND, Doi Inthanon, coll. Malicky, 13-20 Mar.1990 ( ZSM); 1 male, 1 female, Fluss [R.] Ping, 15 km s[üdlich], Chiang Dao, coll. Malicky, 30.Dec.1989 ( ZSM) ; 8 Pe, 3m, THAILAND / LAOS border, Loei Province, nr Na Haew N.P., Huang River , International Falls , 17 34’N 100 59’E, coll. Cranston, 9-10 Mar.2002 ( ANIC) .

Larval description (n=1-2). – Head capsule yellow, with dark mentum. Antenna ( Fig. 1a ) segment lengths: 54-60; 16-17; 3-4; 4-5; 3; blade 68-78; subsidiary 4-5um; style 7-8. A.R.

1.9-2.2. Lauterborn organs 4-5um. Ring organ basal. Very strong (but pale) seta on 1st antennal segment, 18-21 long, arising from mid-segment and extending near to apex of segment 1. Mentum ( Fig. 1b ) width 110 -113, ventromental plate ( Fig. 1c ) triangular with 4-5 creases and 3-7 thorn spines antero-laterally on dorsal surface. Mandible ( Fig. 1d ) 120- 132. Premandible 200, apical tooth blunt, brush Chironominae-like.

Abdomen (n=1). Body setae quite strong, on thorax 50 - 120 long. Anterior parapods apparently scarcely separated, crowned with simple yellow claws. Procercus light brown pigmented, 125 long by 33 wide, bearing 2 lateral setae 100 and 50 long, 6 apical setae of length 325. Posterior parapod claws large curved, simple, dark yellow.

Figures

Fig.1. Shangomyia impectinata Saether & Wang, 1993, Larva; A. Antenna; B. Mentum, ventral; C, Ventromental plate (x1000 magnification); D. Mandible, inner teeth and mola; E. Labrum, semi-lateral view of rotated labrum; F. Dorsal head.