Larrissa nedyma (Menke) Pulawski, 2012

Pulawski, Wojciech J., 2012, A review of the genus Larrisson Menke, 1967, and description of the new genus Larrissa (Hymenoptera, Crabronidae), Journal of Hymenoptera Research 25, pp. 35-82 : 71-72

Larrissa nedyma (Menke) comb. n.

Larrisson nedymus Menke, 1979: 455, ♀, ♂. Holotype: ♀, Western Australia: Nilemah station 50 mi (= 80 km) SSE Denham (ANIC).-Cardale, 1985: 255 (in catalog of Australian Sphecidae ).

Geographic distribution.

Known only from the type locality. I saw three additional specimens from the following localities: Queensland: Dulhunty River 13 km SW Heathland Homestead at 11°50'S, 142°30'E, 17 Mar 1992, G. Daniels and M.A. Schneider (1 ♂, ANIC). Western Australia: 57.5 km NE Kalbarri at 27°17'56"S, 114°31'12"E, 19 Nov 1998, T.F. Houston (1 ♀, WAMP), and 8 km N Nerren Nerren Homestead at 29°04'S, 117°45'E, 25 Sept 1985, R.P. Matthews collector, det. Ole Lomholdt (1 ♀, WAMP).

Key to species of Larrissa and Larrisson

1	Frons uniformly punctate (Fig. 25a); length of scape (excluding radicle) 1.1-1.3 × maximum width (Fig. 25a); inner mandibular margin without preapical tooth, with two teeth near midlength (Fig. 25a); mesopleuron abruptly angular below pronotal lobe; forewing vein M diverging from M+Cu basad of cu-a; basolateral carina of tergum I expanded into lamella. Female: gena with angular bulge near middle; tergum VI with impunctate, glabrous marginal lamella (Fig. 26a). Male: forecoxa with apical spine, foretrochanter excavated basally	Larrissa nedyma (Menke)
-	Frons with impunctate or sparsely to densely punctate scapal basin above each antennal socket (Figs 22b-d); length of scape (excluding radicle) 2.2-2.8 × maximum width (Figs 22b-d); inner mandibular margin with preapical tooth (Figs 22b-d), at most with one obtuse tooth near midlength; mesopleuron rounded anteriorly, not abruptly angulate; forewing vein M diverging from M+Cu distad of cu-a or interstitial with cu-a; basolateral carina of tergum I not expanded into lamella. Female: gena without angular bulge; tergum VI without impunctate, glabrous marginal lamella (Fig. 26b-d). Male: forecoxa and foretrochanter not modified. Genus Larrisson Menke	2
2	Upper frons, gena, vertex, mesothorax, hindcoxal venter, and hindfemoral venter with conspicuous, erect or suberect setae (Fig. 27a). Male: hindfemur with conspicuous preapical, ventrally oriented process (Fig. 27b); apex of tergum VII triangular (Fig. 26c). Female: unknown	Larrisson azyx Menke
-	Head and thorax with appressed setae, hindcoxal venter and hindfemoral venter with inconspicuous erect setae. Male: hindfemur without preapical process; apex of tergum VII rounded (Figs 4d, 12d, 26d)	3
3	Females (unknown in carinatus, rieki, spinosus, sulcatus, and tibialis)	4
-	Males (unknown in latifrons, niger, and punctatus)	12
4	Basal concavity of tergum I with punctures almost as large as those on scutum (Fig. 10a,b); mesothoracic venter markedly depressed; glabrous area of pro podeal enclosure includes median sulcus and adjacent area	Larrisson punctatus Pulawski, sp. n.
-	Basal concavity of tergum I impunctate or with punctures minute or at least smaller than those on scutum; mesothoracic venter inconspicuously depressed; propodeal enclosure all glabrous or nearly so except only median sulcus and adjacent area glabrous in most tegularis	5
5	Gaster all black, without yellow apical bands	6
-	Gaster all or partly red or (in abnormis) black but with apical yellow fasciae on terga	7
6	Mesopleuron shiny, punctures averaging about one diameter apart; hindfemoral apex broadened ventrally (Fig. 8b); setae of pygidial plate dense, largely concealing integument	Larrisson niger Pulawski, sp. n.
-	Mesopleuron dull, interspaces between punctures linear; hindfemoral apex not broadened (Fig. 7b); setae of pygidial plate sparse, integument easily visible (as in Fig. 26b)	Larrisson latifrons Pulawski, sp. n.
7	Gastral terga black, with yellow apical fasciae	Larrisson abnormis (R. Turner)
-	Gastral terga at least partly red, with yellow apical fasciae only in tegularis in which remaining gaster is all red	8
8	First recurrent vein received by second submarginal cell (Fig. 23); inner eye orbits nearly parallel between antennal socket and below midocellus (Fig. 22a)	Larrisson variegatus Pulawski, sp. n.
-	First recurrent vein received by first submarginal cell; inner eye orbits markedly bowed out toward frons midline (Fig. 9a, b)	9
9	Gastral terga with yellow apical fasciae, partly concealed by setae (Fig. 19e); tegula elongate, with concave inner margin (Fig. 19b); most punctures of pygidial plate more than one diameter apart mesally, setae not concealing integument (Fig. 19c)	Larrisson tegularis Pulawski, sp. n.
-	Gastral terga without yellow fasciae; inner margin of tegula not concave; punctures of pygidial plate less than one diameter apart basomedially, setae largely concealing integument	10
10	Orbital fovea well defined, about as wide as 0.8 × ocellocular distance; clypeus with narrow medioventral glabrous area that extends almost to clypeal midlength; scutal punctures averaging about one diameter apart	Larrisson armatus Pulawski, sp. n.
-	Orbital fovea ill defined, about as wide as half ocellocular distance; glabrous apicoventral area of clypeus broad, not extending to clypeal midlength; scutal punctures less than one diameter apart	11
11	Hindtibial lateral surface, in dorsal half, with many small punctures and setae between spines	Larrisson quintus Pulawski, sp. n.
-	Hindtibial lateral surface, in dorsal half, impunctate or with a few sparse punctures and setae between spines	Larrisson orbitalis Pulawski, sp. n.
12	Sternum VIII with glabrous preapical platform on ventral surface, deeply emarginate apically (Fig. 12e)	13
-	Sternum VIII without glabrous preapical platform on ventral surface, entire apically except slightly emarginate in tegularis	16
13	Posterior mandibular margin slightly concave between base and notch	14
-	Posterior mandibular margin angulate between base and notch (Figs 9c, 13a)	15
14	First recurrent vein received by first submarginal cell (as in Fig. 17b); antenna brown (light brown ventrally and apically); flagellomeres cylindrical; tergum I with gap between basolateral carina and lateral ridge that delimits basal concavity (Fig. 2c); tergum VII with basolateral tooth on each side (Fig. 2d); transverse swelling of sternum II not bent posterad	Larrisson armatus Pulawski, sp. n.
-	First recurrent vein received by second submarginal cell (Fig. 23); antenna multicolored: flagellomeres I-VI reddish brown, VII black, VIII and IX pale yellow, X and XI brown; flagellomeres I-IV markedly convex ventrally (Fig. 22b, c); tergum I without gap between basolateral carina and lateral ridge that delimits basal concavity; tergum VII without basolateral tooth; transverse swelling of sternum II markedly bent posterad (Fig. 22f)	Larrisson variegatus Pulawski, sp. n.
15	Forefemoral venter roundly expanded subbasally (Fig. 13b), concave anterobasally; inner margin of forebasitarsus concave (Fig. 13c); foretarsomeres II-IV expanded on inner side (Fig. 13c); hindbasitarsus convex on outer margin (Fig. 13f)	Larrisson quintus Pulawski, sp. n.
-	Forefemoral venter not expanded subbasally, not concave anterobasally; inner margin of forebasitarsus straight; foretarsomeres II-IV not expanded on inner side; hindbasitarsus not convex on outer margin	Larrisson orbitalis Pulawski, sp. n.
16	Hindtibia in dorsal view thickened at about one third length (Fig. 21a); lateral surface with densely punctate ventral area between thickening and apex, broadening toward tibial apex; lateral surface with two spines on thickening and one spine near apex (Fig. 21a, b)	Larrisson tibialis Pulawski, sp. n.
-	Hindtibia not thickened; lateral surface without densely punctate area, with 3-5 evenly spaced spines	17
17	Gaster all black or with pale yellow or reddish brown apical fasciae	18
-	Gaster all or largely red or with pale yellow apical fasciae	20
18	Antenna all yellow or apical two flagellomeres brownish (Fig. 24a); midfemoral venter impunctate (Fig. 24b); propodeal dorsum with conspicuous spine behind spiracle; sternum II with conspicuous transverse swelling	Larrisson rieki Menke
-	Flagellum black or reddish brown ventrally; midfemoral venter punctate; propodeal dorsum at most with inconspicuous spine behind spiracle; sternum II at most with low transverse convexity	19
19	Gastral segments with yellow apical fasciae; posterior propodeal surface without longitudinal sulci; second submarginal cell opened anteriorly	Larrisson abnormis (R. Turner)
-	Gastral segments without yellow fasciae; posterior propodeal surface with pair of longitudinal sulci (Fig. 17a), sulci converging ventrad; second submarginal cell triangular, closed anteriorly (Fig. 17b)	Larrisson sulcatus Pulawski, sp. n.
20	Sternum II simple; sternum VIII setose, emarginate apically (Fig. 19d); tegula elongate, with concave inner margin (Fig. 19b); gastral terga with yellow apical fasciae partly concealed by vestiture (Fig. 19e)	Larrisson tegularis Pulawski, sp. n.
-	Sternum II with swelling or carina; sternum VIII asetose, not emarginate apically; tegula not elongate, inner margin not concave; gastral terga without yellow apical fasciae	21
21	Mesopleuron with obtuse transverse carina in front of midcoxa; metanotum with conspicuous spine (Fig. 16b); propodeum with conspicuous spine behind spiracle; sternum II with transverse swelling; sternum VIII flat	Larrisson spinosus Pulawski, sp. n.
-	Mesopleuron with spine in front of midcoxa (Fig. 4b); metanotum without spine or tubercle; propodeum without spine or tubercle behind spiracle; basal half of sternum II with median carina that is pointed apically (Fig. 4c); sternum VIII largely concave	Larrisson carinatus Pulawski, sp. n.