Milichiella hennigi
Content
Description
Male coloration: Black, except for first three tarsomeres of all legs, which are dark dorsally and yellow ventrally, and yellow setulae ventrally on distal tip of tibia and first tarsomere of foreleg and on first two tarsomeres of hindleg. Tergites 2-5 appear silvery microtomentose dorsally. Wing hyaline, veins light brown; halter black.
Head: Eye 1.5x as high as long, notch in posterior eye margin about 0.1x the length of eye. Posterior orbital seta slightly shorter than anterior 2 orbital setae. Pubescence on basoflagellomere longer than on arista, slightly longer than width of basal joint of arista. Palpus with short setulae at tip and a few slightly longer setulae ventrally.
Thorax: Mesonotum appears to be dull. Two dorsocentral, 1 prescutellar; 1 presutural, and 1 long and 1 shorter (~0.5x) katepisternal.
Wing: R4+5 and M1 converging, costal section between R4+5 and M1 0.6x as long as section between R2+3 and R4+5. Ultimate section of M1 about 3x length of penultimate section. Wing length: ~1.5 mm.
Abdomen: Tergites 2-5 appear silvery microtomentose dorsally, the silvery area bare except for 1 rows of short setulae at the posterior margin of T2-4 and scattered setulae on T5, a few long setae along lateral margins of silvery area. Sternite 5 with sparse setulae. Male genitalia with normal surstylus and cercus (Fig. 16).
Body length: ~1.6 mm.A
A. Brake 2006: Diverse Milichiella Giglio-Tos (Diptera: Milichiidae) in Miocene Dominican amber. – Insect Syst. Evol. 37: 17-26
Head: Eye 1.5x as high as long, notch in posterior eye margin about 0.1x the length of eye. Posterior orbital seta slightly shorter than anterior 2 orbital setae. Pubescence on basoflagellomere longer than on arista, slightly longer than width of basal joint of arista. Palpus with short setulae at tip and a few slightly longer setulae ventrally.
Thorax: Mesonotum appears to be dull. Two dorsocentral, 1 prescutellar; 1 presutural, and 1 long and 1 shorter (~0.5x) katepisternal.
Wing: R4+5 and M1 converging, costal section between R4+5 and M1 0.6x as long as section between R2+3 and R4+5. Ultimate section of M1 about 3x length of penultimate section. Wing length: ~1.5 mm.
Abdomen: Tergites 2-5 appear silvery microtomentose dorsally, the silvery area bare except for 1 rows of short setulae at the posterior margin of T2-4 and scattered setulae on T5, a few long setae along lateral margins of silvery area. Sternite 5 with sparse setulae. Male genitalia with normal surstylus and cercus (Fig. 16).
Body length: ~1.6 mm.A
Discussion
This species is similar to Milichiella lacteiventris Malloch, 1931 from Australia and M. javana de Meijere, 1911 and M. spinthera Hendel, 1913 from the Oriental Region in having dark halters, silvery microtomentose T2-5, and yellow tarsi. It differs from M. spinthera in the presence of a posterior orbital seta (character state not known for M. lacteiventris and M. javana). Due to insufficient species descriptions Milichiella hennigi is not differentiated from the other two species.B
B. Brake 2006: Diverse Milichiella Giglio-Tos (Diptera: Milichiidae) in Miocene Dominican amber. – Insect Syst. Evol. 37: 17-26