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Cycasia Mailoch, 1942, new genus
No full textGenus CYCASIA, new genus Postocular bristles pale, but fine and slender, two supraorbital pairs of bristles, both reclinate, and three pairs of incurved infraorbitals; outer vertical bristles of moderate length and inner pair very long and erect, situated on short elevated bases; eye higher than long, face vertical; third antenna! segment not acute at apex above; arista short pubescent; proboscis short and stout. Presutural bristle strong; dorsocentral pair a little behind a line drawn between supra-alars; sternopleural, mesopleural, and pteropleural strong; scutellum slightly flattened, bare on disk, with four long bristles. Femora unspined; mid tibia with short posterior setulae and one stout apical ventral bristle; hind tibia with a series of anterodorsal setulae. First wing vein setulose from humeral cross vein to apex above, bare below; third vein with three or four setulae at base above, other veins bare; fourth vein slightly dipped down into discal cell before inner cross vein; cross vein closing anal cell almost erect, cell without an apical lower lobe. Fifth abdominal tergite of male as long as two preceding tergites combined, rounded in apical outline, with a pair of prominent glossy black discal bullae and a series of quite long marginal bristles. Genotype: Cycasia oculata, new species. This genus will not run down satisfactorily to any in Hendel's key to the genera of the family (Wien. ent. Zeitung, 33: 73, 1914). It undoubtedly belongs to the segregate or tribe Euribiini of Hendel's latest paper on the family (Die Fliegen der palaearktischen Region, 49, Trypetidae, 1927).Published as part of 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 on pages 202-203, DOI: 10.5281/zenodo.516362
Guamomyia Mailoch, 1942, new genus
No full textGenus GUAMOMYIA, new genus This genus belongs to the Platystominae and nms down to Scotiuosoma in Hendel's key to the genera (Genera Insectorum). It has the frons entirely different, however, the ocelli being about one third of length from vertex to anterior margin instead of close to vertex, and the arrangement of the bristles is quite remarkable. There are three long, equally spaced bristles on each orbital margin, the anterior one close to the middle and the upper one at vertex, the middle one being a little behind the level of the posterior ocelli; a fourth pair of bristles that are much shorter, finer, and incurved (undoubtedly the inner vertical pair) is situated about one third of the distance from the vertical to the second bristle and closer together on the inner edge of the orbits; ocellars short, divergent. Frons slightly bulged upward in front, with many stiff erect black hairs. Eyes bare. Profile higher than long. Antennae about half the face length, third segment not over twice as long as wide, broadly rounded at apex, second segment with some long hairs at apex below, one or two of which extend beyond the apex of third segment; aristae short haired on entire length; facial foveae shallow and narrow; epistome slightly projecting; genal bristle present; postocular bristle lacking. Thorax with the following bristles: 1 humeral, 2 notopleurals, 1 supra-alar, 2 postalars, 1 pair of dorsocentrals, 1 pair of short prescutellar acrostichals, and 6 scutellars; disk of scutellum haired. \Ving fasciate with black, first and third veins setulose on their entire extent above, inner cross vein close to middle of the discal cell; first posterior cell not narrowed at apex, anal vein obsolete apically, cross vein closing anal cell almost straight. Lower squama rudimentary. Genotype: Gua.inomyia fascipennis, new species.Published as part of 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 on page 206, DOI: 10.5281/zenodo.516362
Guamomyia fascipennis Mailoch, 1942, new species
No full textGuamomyia fascipennis, new species (fig. 3). Female. Head tawny yellow, upper orbits, ocellar region and vertex usually darker and slightly pale gray dusted, occiput infuscated c,entrally; face with a more or less distinct dark line along each facial ridge and with a dark streak across epistome; antennae not darkened; aristae black; prelabrum and proboscis black. Frons fully twice as long as wide at vertex, slightly widened in front. Eye distinctly higher than long tapered below, facets uniform in size. Gena about as high as width of third antenna! segment and one eighth as high as eye; parafacial almost invisible in profile; face with a small elevation in center below level of antenna! insertions. Thora.t: "black, slightly shiny, with rather dense pale gray dust, mesonotum with four indistinct dark vittae, submedian pair widely separated and more evident than wider sublateral pair. Dorsal hairs black, not inserted in evident punctures; mesopleura, propleura, sternopleura, and pteropleura haired. Legs moderately stout, pitchy black, knees very narrowly yellowish, and basal two segments of all tarsi pale yellow. No exceptional armature present; fore femur with a series of moderately long posteroventral bristles; mid tibia with a long straight apical ventral bristle. Wings hyaline, with dark pattern and venation as in figure 3. Halteres yellow. Abdomen blackish brown, slightly shiny, with pale gray dust on a narrow apical margin of third and fourth tergites and entire fifth gray dusted. Base close against postnotum, apex of first visible tergite elevated, the sides slightly compressed; genital cone broad, rather abruptly narrowed at apex. Length, 3-3.5 mm. . Guam, no other data, Fullaway, type and four paratypes, one without head. I have seen one or two other genera in which the ocelli are well forward of the vertex but in none of them are the other characters as here.Published as part of 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 on page 207, DOI: 10.5281/zenodo.516362
Rhabdochaeta guamae Mailoch, 1942, new species
No full textRhabdochaeta guamae, new species (fig. 2, a, b). Male. A characteristic species of the genus, distinguished from its allies by wing markings. In figure 2, a, the bullae are not shown. They are merely slightly elevated spots a little more elevated and more shiny on the upper surface than the surrounding membrane, three in number, located as follows: one on each side of the outer cross vein against the fourth vein, and the third above the outer extremity of the black spot beyond the inner cross vein. The third and first veins are setulose above. Head testaceous yellow, with whitish dust, vertex gray, occiput with a pair of black spots connected above neck, gray dusted. Antennae yellow, aristae yellow at base, whitish beyond; palpi pale testaceous yellow, with quite dense short stiff black hairs along sides. A small black spot between each antenna! base and eye. Profile as in figure 2, b. Inner vertical and two intermediate orbital bristles dark brown, anterior infraorbital, two upper reclinate supraorbital, ocellar, outer vertical, postvertical, and interfrontal bristles, and most postocular setulae white. Frans about half the head width, almost quadrate, orbits linear, widened below. A strong pair of bristles on interfrontal stripe about midway between anterior ocellus and lunule, three incurved white bristles behind each inner vertical bristle. Third antenna! segment tapered to apex; aristae pubescent. Thorax testaceous yellow, disk on mesonotum and scutellum, postnotum and marks on pleural sclerites black, with dense pale gray dust. Bristles luteous, dark brown at extreme bases, all mesonotal hairs and most of those on pleura except a few on mesopleura and all the short pleural bristles, white. Bristles as follows: 1 humeral, 1 presutural, 2 notopleural, 1 supra-alar, 2 postalar, 2 pairs of dorsocentrals, anterior pair at suture, and 4 scutellars, apical pair minute; all pleural bristles short. Legs yellow, hind tibia with a dark brown annulus near base opposite a similarly colored mark on ventral surface of hind femora. No exceptional armature nor structures present. Wings whitish hyaline, with yellowish brown markings as shown in figure 2, a; usual deep black spots above outer cross vein, and fourth vein bent upward just beyond outer cross vein as in the other species. Halteres yellow. Abdomen short ovate, testaceous yellow, largely blackened and entirely gray dusted on dorsum; hairs and bristles white. Length, 2.75 mm. Guam, no other data, Fullaway, type.Published as part of 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 on pages 204-205, DOI: 10.5281/zenodo.516362
Spathulina Rondani
No full textGenus SPATHULINA Rondani Spathulina Rondani, Dipt. Ital. prodr., 1: 113, 1856.Published as part of 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 on page 202, DOI: 10.5281/zenodo.516362
FIGURE 3 in Trypetidae, Otitidae, Helomyzidae, And Clusiidae of Guam (Diptera)
No full textFIGURE 3.-\Ving of Guamomyia fascipennisPublished as part of 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 on page 207, DOI: 10.5281/zenodo.516362
FIGURE 2 in Trypetidae, Otitidae, Helomyzidae, And Clusiidae of Guam (Diptera)
No full textFIGURE 2.-Rhabdochaeta guamae: a, wing; b, head.Published as part of 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 on page 204, DOI: 10.5281/zenodo.516362
FIGURE 1 in Trypetidae, Otitidae, Helomyzidae, And Clusiidae of Guam (Diptera)
No full textFIGURE 1.-vVing of C31casia oculata.Published as part of 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 on page 203, DOI: 10.5281/zenodo.516362
Pogonortalis fulvofemoralis Mailoch, 1942, new species
No full textPogonortalis fulvofemoralis, new species. Male and female. Head black, frons except triangle and upper orbits dull, lower orbits, parafacials, and postocular orbits white dusted; basal two segments of antennae brown; palpi blackish brown; face distinctly white dusted above and in foveae, dust thinning out at middle and lacking below. Frons about 1.5 times as long as wide, two pairs of orbitals short and fine, quite close to upper margin; ocellars minute, divergent; all four verticals strong and quite long; postocular of moderate length. Jowls of male quite variable, sometime~ prominently angularly produced and head then distinctly wider than length of thorax, angle rather densely haired, beard consisting of fine bristles that become longer behind; female without angulation of jowls and exceptional bristling. Aristae short haired on entire extent; palpi slightly spatulate, larger in male than in female. Thorax glossy black, with bluish or purplish tinge, with very little trace of dusting and no markings, surface rather closely piliferous punctate, pile and bristles black. Bristles as follows: 1 humeral, 2 notopleurals, 1 supra-alar, 2 postalars, 1 pair of dorsocentrals, no acrostichals, scapulars minute, 4 scutellars, and 1 mesopleural. Scutellum convex, without discal hairs. Legs fulvous yellow, all tibiae and tarsi blackish brown. Fore femur with one or two fine black bristles apically sloped on posteroventral surface apically, mid tibia with a strong straight apical ventral bristle; hind femur a little thicker than other pairs, with usual elevated keel-like ridge about one third from apex on anteroventral surface, and a group of fine short bristles on apical third above keel on anterodorsal surface; hind tibia with a series of very short anteroventral setulae centrally that are hardly distinguishable above the surface hairs. Wings brownish hyaline, with the following dark marks: all of anterior basal cell up to inner cross vein, a subquadrate mark from brown stigma to third vein across field of wing, a streak from apex of second vein along costa to apex of wing, widened apically, and narrow clouds over all cross veins, membrane except between costal spots distinctly brown tinged. Inner cross vein oblique, close to middle of discal cell; third vein curved downward at apex so that first posterior cell is narrowed apically; base of sec ond vein with a few short setulae below; first and third veins closely setulose on entire extent above. Halteres dark brown. Abdomen glossy black, with a bluish or purplish tinge. Hairs short and quite dense, third tergite elongate in male and with a number of fine apical bristles on sides, much as in Cleitamia. Length, 5-7.5 mm. Guam, no other data, Fullaway, type male and allotype female; paratypes: Yigo, Nov. 8, on corn, male,. Swezey; Yona, April 29, on dead Areca palm leaves, female, Bryan.Published as part of 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 on pages 205-206, DOI: 10.5281/zenodo.516362
Trypetidae
No full textFAMILY TRYPETIDAE There are but four genera, each represented by a single species, in this collection. Three appear to be unclescribecl, and the fourth is a widely spread Old Worlcl species.Published as part of 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 on page 201, DOI: 10.5281/zenodo.516362
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