Thienemannimyia, Fittkau, 1957

Namayandeh, Armin, Bilyj, Bohdan, Beresford, David V., Somers, Keith M. & Dillon, Peter J., 2012, 3324, Zootaxa 3324, pp. 1-65 : 7

Thienemannimyia group

Group diagnosis. Head with ventral hypostomal groove present; ventral cephalic setae S9, S10 generally arranged as in Fig. 2E, S 9 is long and simple, S10 shorter either bifid or trifid, SSm shorter than the previous two and multibranched; maxillary palp with 7 stylets of which sensillum b may be 2 or 3-segmented, RO in distal third; head/ antennal length ratio about 2.2, AR 3.4–5.2; mandibles curved with generally weak inner teeth; M appendage with pseudoradula possessing distinct granulation; dorsomentum with two teeth pointed medially; ligula with 5 teeth with inner laterals usually out-turned; abdomen with scattered simple hairs at least half the subtending segments; procercus L/W 3–4, with 7 apical hairs; anal tubules elongate tapering; posterior parapod with 15 regular sized claws, of which 5 are relatively broad and darker than the rest plus one tiny pale claw.

Notes. Fourth instar larva is required to identify to genera. A detailed diagnosis for each genus within the group is given by Fittkau and Roback (1983). Four species belonging to the genera Hayesomyia , Meropelopia , and Thienemannimyia are diagnosed below.