Oriental Chironomus: ?Einfeldia thailandicus

?Einfeldia thailandicus

Yamamoto et al. 2015 class this as so-called Einfeldia, requiring more study.
They report it from Japan.

Adult:

Male: Body length 4.5-5.0 mm.
Head: Frontal tubules vestigial; vertex setae relatively long.  AR 2.5-3.5.
Relative lengths of palps (segs 2-5) 2 : 7 : 7 : 12; P5/P4 & P5/P3 - 1.71;
Pronotum narrow but not divided.  Thoracic vittae pale brownish yellow; median vitta with median longitudinalline slender and black with caudal minute black spots, scutellum white, postnotum brownish on sides.
Fore tarsi broken so LR unknown.  Leg segments yellow, tarsal segments 4 and 5 of mid & hind legs somewhat darker.
Wings hyaline, fCu at base of r-m; squama fringed.
Abdomen pale in colour, caudal margin of TI-VI each with darker band with mesal portion broader; tergites VII and VIII with no band.  Anal point black, broad but narrowing gently towards the distal end; dististyles moderately broad, narrowing gently to the end; Superior volsella swollen and pubescent at base, bare and forming a hook on distal portion; Inferior volsella long and relatively narrow, bending upwards, with recurved apical setae.

Hashimoto"s illustration of the male hypopygium

Female, Pupa, Larva and Cytology not described.

Found: Thailand (Holotype Ban Bangkanark, Chachoengsao Prov.); Ban Thau Sieo, Amphoe San Pa Tong, Chiang Mai Provence.
Japan (Yamamoto et al. 2015).

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