Czernyola atrifrons Mailoch, 1942, new species
Creators: name: Mailoch, J. R.
Publisher: name: Zenodo
Year: 1942
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Clusiidae
Czernyola
Czernyola atrifrons

description: <b>Czernyola atrifrons,</b> new species. Female. <i>Head</i> testaceous yellow, frons glossy black, with a fulvous spot in center of anterior margin; antennae reddish yellow, third segment sometimes slightly browned on upper edge; palpi pale yellow; parafacials and genae silvery white dusted; occiput glossy black, yellowish below. Frons with the usual three strong orbitals, second pair incurved and almost in line with the others; ocellar bristles fine and much shorter than orbitals, about equal to the postvertical pair; gena about half as high as width of third antenna! segment. <i>Thorax</i> glossy fulvous yellow, mesonotum with a large black oblong mark on center behind suture that extends to posterior margin, and a black mark of variable size on anterior margin which is sometimes tridentate behind and with traces of central and lateral lines extending back to postsutural mark; a large black mark covering upper half or more of mesopleura, and another on metapleura; scutellum fulvous yellow. Bristles all black, arranged as follows: 1 humeral, 2 notopleurals, 2 pairs of long posterior and <b>1</b> very short pair of anterior dorsocentrals, <b>1</b> supra-alar, <b>1</b> very long and <b>1</b> very short postalar, 2 long apical and 2 very short lateral pairs of bristles on scutellum, <b>1</b> mesopleural, and <b>1</b> sternopleural. Mesonotum rather strongly haired; propleura finely haired on sides. <i>Legs</i> yellow. All tibiae with preapical dorsal bristle, the one on fore tibia short and fine, the others strong and long, mid tibia with a shorter posterodorsal bristle nearer apex than the usual one slightly over center of dorsum and almost on anterodorsal surface, and a long apical ventral bristle. <i>Wings</i> brownish hyaline, with a pale rather diffuse brown cloud on apical costal half, veins dark brown. Inner cross vein at one third from apex of discal cell; penultimate section of fourth vein about one fifth as long as ultimate vein. <i>Abdomen</i> more or less extensively blackened, sometimes only genital segments yellow. Length, 3 mm. Dededo, May 19, Usinger, type; Guam, no other data, Fullaway, 2 paratypes. The Samoan species <i>C. palliseta</i> Malloch, differs from <i>C. atrifrons</i> in having the cephalic and thoracic bristles yellow, and the thorax except the lower portion of the pleura entirely black. The Formosan species, <i>C. biseta</i> Hendel, has the thorax and abdomen black, and the hind femora with a preapical brown ring. Both of these species were described from males. It is possible that one or the other of them may be the male of <i>C. atrifrons,</i> but this is hardly probable, the amount of difference in color characters being exceptional in a species of this genus.
description: Published as part of <i>Mailoch, J. R., 1942, Trypetidae, Otitidae, Helomyzidae, And Clusiidae of Guam (Diptera), pp. 201-210 in Insects of Guam I, Honolulu, Hawaii :Bernice P. Bishop Museum</i> on pages 209-210, DOI: 10.5281/zenodo.5163626