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 longitudinal line 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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