Head: eyes black, holoptic
, facets hexagonal, closely adjacent (Fig.
, contiguous at the upper portion of frons for a distance about l.5-2.0 times the distinct and triangular lower portion; from profile, lower portion of frons appears sloping forwards at about 45deg to the narrow upper portion; frons, gena and narrow face densely silvery dusted and almost bare; occiput black, dusted whitish, with weak whitish hairs becoming longer and coarser at margins; proboscis black, long, about 3 as long as head or slightly longer; antennae (Fig.
It unquestionably belongs to the calyptrate family Anthomyiidae because of the following combination of characters: (1) head holoptic
in male, dichoptic in female; (2) female with a pair of crossed interfrontal setae; (3) lower calypter well developed; (4) tiny hair-like setulae present beneath tip of scutellum; (5) vein A1 extended to wing margin as a weak fold; (6) male surstyli and cerci united by vertical sclerotized connections immediately distal to lateral cercal apodemes; (7) spiracles VI and VII present in female abdomen.
Medium to large flies; male holoptic
; lower calypter narrow, rounded posteriorly, with anteromedian angle distinctly lateral to base of scutellum, not directed towards the scutellum; subcostal sclerite and basal section of stein vein bare (remigium); apical tip ofparaphallus with denticles.
Head: Eyes black, holoptic
, facets circular, closely adjacent.
Diagnosis: Male holoptic
; arista plumose, with individual branches longer than width of postpedicel; scutum with postsutural transverse brown fascia, not extending back medially as brown vitta that reaches scutellum, scutellum pale-dusted at apex; postsutural dorsocentrals 4; mid tibia with 2 or 3 posterior setae.
Adults can be easily distinguished by the characteristic marks on mesonotum and abdomen (Couri and Carvalho, 2002: 166, figs 33 and 34; Marques and Couri, 2007:438, figures 1-21); holoptic
males; arista with long plumae; dorsocentral setae 2:4; katepisternals 1:1 and sternite 1 setulose.
fiorella that were claimed to be similar to the holoptic
eyes found in three genera of Neotropical fungus-feeding species.
--Scape subequal to pedicel; males holoptic
or dichoptic ...
1); eyes bare, holoptic
, contiguous at median part of upper frons (Figs 2, 3), ommatidia largest anterodorsally, but no distinct demarcation between upper and lower ommatidia; ocellar tubercle slightly prominent; lower frons triangular, with very fine median groove; face with margins continuous with those of lower frons, diverging ventrally, receding; gena narrowly visible in lateral view (Fig.
Utilizing patented Holoptics
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