Stipomorpha dichromata Reemer, 2013, spec. nov.
Creators: name: Reemer, Menno
Publisher: name: Zenodo
Year: 2013
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Syrphidae
Stipomorpha
Stipomorpha dichromata

description: Stipomorpha dichromata spec. nov.
Figs 134–137.
Studied type specimens. HOLOTYPE. BRAZIL. Female. Label 1: " Nova Teutonia / 27°11'S- 52°23'W / Brazil, 300- 500 m. / XI.1969 / Fritz Plaumann". Coll. CNC.
Description (based on holotype)
Adult female. Body size: 8 mm.
Head. Face occupying about 1/3 of head width in frontal view; shining dark brown; white pilose. Gena hardly developed, eyes almost directly bordering oral margin; brown. Lateral oral margins slightly produced; not reaching below eye margin in lateral view. Frons blackish brown; golden yellow pilose. Vertex shining blackish brown; golden yellow pilose; ocellar triangle equilateral. Occiput black; golden yellow pilose dorsally, yellowish white pilose ventrally. Eye bare. Antennal fossa about as wide as high. Antenna brown. Antennal ratio approximately as 2:1:4; basoflagellomere parallel-sided with rounded apex, with sensory pit at 2/3 from base. Arista slender, about 3/ 4 of length of basoflagellomere.
Thorax. Scutum black, with metallic hues along margins; appressed golden yellow pilose. Postpronotum, and postalar callus blackish, yellow pilose. Scutellum apically shallowly sulcate; blackish brown with metallic hues; appressed golden yellow pilose. Anepisternum weakly convex, without distinction between anterior and posterior part; dark brown; golden yellow pilose anteriorly and posteriorly. Anepimeron shining brown; entirely long yellow pilose dorsally. Katatergum and anatergum brown; long and short microtrichose, respectively. Katepimeron brown; bare. Katepisternum brown; yellow pilose dorsally, bare ventrally. Calypter and halter yellow.
Wing: hyaline, with faint brownish tinge, especially anteriorly; microtrichose except bare on 1st costal cell, basal 1/5 of cell r1, basal 3/4 of cell br, posterobasal 1/2 of cell bm, anterobasal 1/3 of cell cup.
Legs: Yellowish brown, femora darker basally; all femora and entire hind leg black pilose, front and middle tibiae and tarsi yellow pilose. Coxae and trochanters dark brown; white pilose.
Abdomen. Tergites 1 and 2 shining yellowish brown, with posterior margin of tergite 2 narrowly pale yellow; yellow pilose. Tergites 3-5 dark brown; shining with metallic hues, except for large dull part medially on anterior 3/ 2 of tergite 3 and small, oval dull part medially on anterior 1/4 of tergite 4; golden yellow pilose, except black pilose on dull parts. Sternites yellowish brown, yellow pilose, except sternite 1 bare.
Etymology. The name dichromata is Greek for two-coloured.
Diagnosis. The contrasting colour pattern of the abdomen is unique among all known Stipomorpha species: tergites 1 and 2 yellowish brown, other tergites dark brown.
Distribution. Only known from one specimen from Brazil, Nova Teutonia.
description: Published as part of Reemer, Menno, 2013, Taxonomic exploration of Neotropical Microdontinae (Diptera: Syrphidae) mimicking stingless bees, pp. 1-88 in Zootaxa 3697 (1) on page 47, DOI: 10.11646/zootaxa.3697.1.1, http://zenodo.org/record/284383