Ommatius (Pygommatius) albatus Martin

Scarbrough, Aubrey G. & Marascia, Claudio G., 2003, Revision of Ommatius Wiedemann (Diptera: Asilidae). IV. Pygommatius subgen. nov. with twenty-five Afrotropical species, Zootaxa 228 (1), pp. 1-94 : 18-20

publication ID

https://doi.org/ 10.11646/zootaxa.228.1.1

publication LSID

lsid:zoobank.org:pub:AC9F77DE-F702-4620-B756-D753E77FBC73

DOI

https://doi.org/10.5281/zenodo.5080315

persistent identifier

https://treatment.plazi.org/id/03A9FF3D-FFCB-FFDF-9D15-5960FD1BC0DC

treatment provided by

Felipe

scientific name

Ommatius (Pygommatius) albatus Martin
status

 

Ommatius (Pygommatius) albatus Martin View in CoL

Figs. 2 View FIGURES 1­10 , 62­69 View FIGURES 62­69

Ommatius albatus Martin, 1964: 312 View in CoL . Holotype ♂, type locality Nosy Komba : Ampangorinana, Madagascar (NHMB). Not examined.

Ommatius albatus: Oldroyd, 1980: 347 View in CoL (Afrotropical catalogue).

Redescription, male. Black. Length, body 10.4 mm; wing 7.5 mm. Head: White tomentose, mostly white setose. Face ventrally with dense white setae, slightly drooping, 2­3 long, thin bristles, 1 black; pencil­like bristles absent: FHWR 1.0:5.4­10:5.5. Proboscis with narrow base yellow. Antenna mostly black or white setose. Occiput with 5­7 black postocular bristles, longest bristle one­half to two­thirds distance toward ocellar tubercle.

Thorax: Mesonotum dense brown tomentose between dorsocentral rows, 2 lighter brown spots laterally, sides gray tomentose; bristles and most setae black, anterior dorsocentral setae subequal in length to pedicel and scape; 4 lateral and 4­5 dorsocentral bristles present; white setose between dorsocentrals posteriorly. Scutellum gray tomentose, scattered long, white setae and 2 black marginal bristles present. Pleuron black, gray tomentose, white setae and bristles present. Halter yellow.

Wing ( Fig. 2 View FIGURES 1­10 ): Apical third to apical half posteriorly dense microtrichose. Cell r 4 unusually wide. Cell m 3 with apex perpendicular to wing axis, near r­m.

Leg: Fore coxa and narrow apex of middle coxa yellow, coxae otherwise black; gray tomentose; bristles and setae white to pale yellow, bristles thin. Femora mostly yellow, one­half to two­thirds black apically; ventral bristles absent, only thin, mostly white, setae present; apical half of hind femur with black posteroventral setae; HFWLR 1.0:6.7­ 1.0:6.8. Fore and middle tibiae pale yellow with lateral fringe of dense white setae. Hind tibia with apical half to two­thirds black, white setose anteriorly. Fore and middle tarsi with basal 4 tarsomeres mostly pale yellow, narrow apices brown, apical tarsomeres black; hind tarsus entirely black. Fore tarsus dorsally and laterally with white setae and 4 yellow bristles; lateral setae long, more dense than elsewhere, fringe­like.

Abdomen: Black. Brown tomentose dorsally, gray ventrally; setae mostly white, mostly brown on apical 3 tergites. Sternites 4 ­5 with several, erect, yellow bristles.

Terminalia ( Figs. 62­66 View FIGURES 62­69 ): Ventral lamella with abundant setae. Epandrium with dorsal branch short, curved ventrally; median branch long, podiform; ventral branch much shorter, forked apically, claw­like laterally. Hypandrium with ‘beard’ of black setae, surface of setae scaly.

Female. Differs from male as follows: Length: Body 11: 0­12.5mm; wing 8.8­9.3 mm. Head: Face and frons yellow tomentose; mystax with sparse black and white setae, 3 thin, black bristles present. Antenna black setose. FHWR 1.0:5.8­1.0:6.0. Thorax: Most katatergal bristles black. Leg: Middle coxa mostly yellow, narrow base black; black and white vestiture present. Femora with apical third black; apical third of hind femur posteriorly with black bristles; HFWLR 1.0:6.0­1.0:6.1. Fore and middle tibiae and fore tarsus without lateral fringe of white setae, bristles black except 1 yellow on fore tarsus; hind tibia anteriorly with basal half white setose. Abdomen: Most tergites and sternites 7­8 mostly or entirely black setose, white elsewhere. Tergite 9 strongly emarginate anteriorly and posteriorly, strap­like mediodorsally. Sternites 4­5 without erect bristles. Terminalia ( Figs. 67­ 69 View FIGURES 62­69 ): Three spermathecae present, apex pointed; duct prebasal and lateral. Apical margin of sternite 8 slightly concave medially.

SPECIMENS EXAMINED. MADAGASCAR: 1 ♂, Tananarive , 11.iii.1950, Id. Oldroyd 1971 ( CASC); 2 ♂, 3 ♀, Madagascar N., Ambohitra 800m, Joffreville, 9­12.iv.1991, A. Freidberg and Fini Kaplan ( NMSA) .

Distribution. Forest species captured from March and April at 800 meters in elevation in Madagascar.

Remarks. In addition to the characters in the key, the male of O. albatus is further distinguished by the stout, erect bristles of sternites 4­5 and the female by the emarginate apical margin of sternite 8 ( Fig. 69 View FIGURES 62­69 ).

NMSA

KwaZulu-Natal Museum

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Diptera

Family

Asilidae

Genus

Ommatius

Loc

Ommatius (Pygommatius) albatus Martin

Scarbrough, Aubrey G. & Marascia, Claudio G. 2003
2003
Loc

Ommatius albatus: Oldroyd, 1980: 347

Oldroyd, H. 1980: 347
1980
Loc

Ommatius albatus

Martin, C. H. 1964: 312
1964
GBIF Dataset (for parent article) Darwin Core Archive (for parent article) View in SIBiLS Plain XML RDF