Larrisson tegularis Pulawski 2012

Width of face across clypeus and vertex = 60:61–62, least interocular distance 30–31 in female, and 60:60 and 36, respectively, in male. Orbital fovea absent. Clypeal lobe only slightly prominent, its free margin arcuate, not angulate laterally. Scapal basin smaller than in other Larrisson, all punctate (punctures almost contiguous), setae not concealing integument (Fig. 17a). Length of scape (excluding radicle) 2.7 × width, length equal to flagellomeres I–III + half IV combined. Scutal and mesopleural punctures less than one diameter apart; mesopleuron rounded in front of midcoxa, without tooth or crest; mesothoracic venter densely punctate throughout in some individuals (punctures less than one diameter apart), but sparsely punctate or impunctate on each side in others. Tegula elongate, with concave inner margin (Fig. 19b). Metanotum without tooth or carina. Propodeum without spine or tubercle behind spiracle; side ridged, punctate between ridges, finely ridged and impunctate anteriorly; posterior surface unsculptured or finely ridged mesodorsally, coarsely punctured mesoventrally. Externoventral hindfemoral margin minimally expanded next to apex. Outer surface of hindtibia with small setigerous punctures, including dorsal half. Setae all silvery, appressed on head, thorax, propodeum, and legs, completely concealing integument on clypeus (except medioventrally), lower frons (except scapal basin), and mesopleuron. Glabrous area of propodeal dorsum limited to slightly more than median sulcus. Hindfemoral venter asetose, inner (= posterior) surface setose, asetose ventrally. Head, thorax, and propodeum black except the following are yellow: clypeus medioventrally, scape, pedicel, mandible (apical third dark brown), and pronotal lobe; flagellum brown dorsally, yellowish brown ventrally. Forefemur yellow except reddish brown dorsally (light to dark), most of midfemur reddish brown (light to dark), but yellow ventrally and apically, hindfemur reddish brown except yellow apically; tibiae and tarsi yellow. Gaster brownish red, terga with yellow apical bands that are somewhat concealed by appressed vestiture (Fig. 17e). Female. Punctures of pygidial plate averaging more than one diameter apart mesally, setae not concealing integument. Forebasitarsus with three or four rake spines; apical spine of foretarsomere III about 1.4 × as long as apical basitarsal width. Length 4.2–4.9 mm. Male. Posterior mandibular margin not expanded between base and notch. Flagellum cylindrical; dorsal length of flagellomere I 0.8 × apical width. Legs unmodified; forebasitarsus with four rake spines; apical spine of forebasitarsus III as long as apical basitarsal width. Sternum II without transverse swelling; apex of sternum IV and all sterna V–VIII with dense, erect setae; sternum VIII flat, all punctate, shallowly emarginate apically (Fig. 17d). Genitalia unlike those of other Larrisson, with broad, rounded gonocoxite and setae invisible from above (Fig. 20). Length 4.2 mm.

(Fig. 3). Known from one locality in southwestern New South Wales.

Width of face across clypeus and vertex = 60:61–62, least interocular distance 30–31 in female, and 60:60 and 36, respectively, in male. Orbital fovea absent. Clypeal lobe only slightly prominent, its free margin arcuate, not angulate laterally. Scapal basin smaller than in other Larrisson, all punctate (punctures almost contiguous), setae not concealing integument (Fig. 17a). Length of scape (excluding radicle) 2.7 × width, length equal to flagellomeres I–III + half IV combined. Scutal and mesopleural punctures less than one diameter apart; mesopleuron rounded in front of midcoxa, without tooth or crest; mesothoracic venter densely punctate throughout in some individuals (punctures less than one diameter apart), but sparsely punctate or impunctate on each side in others. Tegula elongate, with concave inner margin (Fig. 19b). Metanotum without tooth or carina. Propodeum without spine or tubercle behind spiracle; side ridged, punctate between ridges, finely ridged and impunctate anteriorly; posterior surface unsculptured or finely ridged mesodorsally, coarsely punctured mesoventrally. Externoventral hindfemoral margin minimally expanded next to apex. Outer surface of hindtibia with small setigerous punctures, including dorsal half. Setae all silvery, appressed on head, thorax, propodeum, and legs, completely concealing integument on clypeus (except medioventrally), lower frons (except scapal basin), and mesopleuron. Glabrous area of propodeal dorsum limited to slightly more than median sulcus. Hindfemoral venter asetose, inner (= posterior) surface setose, asetose ventrally. Head, thorax, and propodeum black except the following are yellow: clypeus medioventrally, scape, pedicel, mandible (apical third dark brown), and pronotal lobe; flagellum brown dorsally, yellowish brown ventrally. Forefemur yellow except reddish brown dorsally (light to dark), most of midfemur reddish brown (light to dark), but yellow ventrally and apically, hindfemur reddish brown except yellow apically; tibiae and tarsi yellow. Gaster brownish red, terga with yellow apical bands that are somewhat concealed by appressed vestiture (Fig. 17e). Female. Punctures of pygidial plate averaging more than one diameter apart mesally, setae not concealing integument. Forebasitarsus with three or four rake spines; apical spine of foretarsomere III about 1.4 × as long as apical basitarsal width. Length 4.2–4.9 mm. Male. Posterior mandibular margin not expanded between base and notch. Flagellum cylindrical; dorsal length of flagellomere I 0.8 × apical width. Legs unmodified; forebasitarsus with four rake spines; apical spine of forebasitarsus III as long as apical basitarsal width. Sternum II without transverse swelling; apex of sternum IV and all sterna V–VIII with dense, erect setae; sternum VIII flat, all punctate, shallowly emarginate apically (Fig. 17d). Genitalia unlike those of other Larrisson, with broad, rounded gonocoxite and setae invisible from above (Fig. 20). Length 4.2 mm.

(Fig. 3). Known from one locality in southwestern New South Wales.