MESODINA; TRAPEZITES. By Dr. A. Seitz. 
1059 
4. Genus: Mesodina Meyr. 
Antennal club long, pointed, turned down; palpi porrect with a short terminal joint; hind legs without 
middle spurs; forewing without the $ stigma; vein 5 parallel with 4 and 6, rising somewhat nearer to 6. In 
the hindwing vein 5 is stunted. Only 3 species from Australia. 
M. hatyzia Hew. (171 e, f). Above dark brown, in the cell of the forewing a white square spot, behind halyzia. 
it between the median branches 2 more; in the $ besides with a fine subapical band of 3 very small spots. 
Beneath light violettish-grey with a small dark spot in the cell of the hindwing and a semicircle of such punctiform 
spots in the disc. — Larva pale green, the face clad with short whitish hair, the body with a white hue; on 
Patersonia, an Iridea. The imagines appear already in October, flying throughout summer until April. In 
New South Wales, near Sydney, and in the Blue Mountains in places not rare. — The species also occurs near 
Perth in West Australia, though in the form cyanophracta Low., in which the $ hindwing beneath shows a cyanophrac- 
more distinct blue tinge, whilst the forewing exhibits the subapical chain of very small dots. ta - 
M. aeluropis Meyr. & Loiv. is similar, larger, but the dark upper surface in the basal partions of aeluropis. 
all the wings with an intense metallic reflection, the spots on the forewing similarly arranged as in halyzia, 
but the spots yellow instead of white, near the distal one often yet a smaller accessory spot. — Larva quite 
similar to that of halyzia, on Patersonia. Imago in February and March, in the Blue Mountains of New South 
Wales. 
M. croites Hew. (167 f). In this species the yellow colour on the upper surface is so much increased croitc.s. 
that its extent is almost that of the ground-colour. Almost the whole basal half of the forewing and the whole 
central portion of the hindwing are of a bright honey-colour, as in no other Anisynta , but it superficially 
resembles Hesperilla chaostola, though in croites the under surface is just as much spotted honey-coloured as 
above, only the ground-colour of the apex of the forewing and the hindwing being dull ochreous. This imago 
is said to originate from West Australia being pool 1 in lepidoptera; from Carnarvon. But it is apparently also 
rare in this district being little collected. 
5. Genus: Trapezites Hbn. 
This genus also contains phigalia for which the genus Patlasingha Wts. was founded only owing to 
differences in the last palpal joint and the antennal club. Antennal club long, more or less flawed, with a lo; g 
or medium long apex. Palpi rising or almost porrect with a short last joint. Hind tibiae with all the spurs. 
Eorewing of d without a sexual spot; in the hindwing vein 5 is indistinct. Hereto belong 8 species among which 
are the most beautiful Hesperidae of Southern Australia; the genus does not occur outside of Australia. 
T. petalia Hew. ( — megalopis Meyr.) (167 g,h). Spots of the forewing in the $ larger, in the petalia. 
smaller, in the disc arranged in the shape of a Y; in the hindwing a discal spot tinged with brown. Under surface 
yellowish-grey, the hindwing has but one thick black central spot centred with white. Eastern Australia, from 
Sydney to the north as far as Mackay, where the imago flies in winter and spring (March till November). 
T. heteromacula Meyr. & Low. (= heliomacula Meyr. <£• Low.) is midway between petalia (167 g, h) heteroma- 
and jacchus ; separated from the former by the lighter colouring and 2 accessory spots on the hindwing beneath, cl,Ia - 
from the latter by the much shorter hands on the hindwing above and fewer spots beneath, as well as by the 
arrangement of the spots. The $ is like the except the two small spots on the hindwing beneath near the 
margin being somewhat larger and less roundish. Queensland. 
T. luteus Tepp. (= petalia Misk. nec Hew.) resembles petalia (167 g, h) so much that it was luteus. 
confounded with it, but it is much smaller (expanse of $ only 25 mm); in the hindwing there is instead of 
the brownish-yellow cloud a central patch composed of 3 more distinctly defined spots. From South Australia. 
(Adelaide) and New South Wales. — In glaucus Waterh. & Ly., from Tasmania, the yellow spots above glaucus. 
are larger and sometimes also augmented. 
T. jacchus. Dark brown, upper surface with large yellow spots which are said to be whitish-yellow jacchus. 
(according to Fabricitjs even snow-white) in the northern form jacchus F.. whereas in the southern form 
eliena Hew. (= jacchus Semp.) (167 h), from Brisbane to Tasmania, they are golden yellow (the most anterior eliena. 
ones sulphur-coloured), monocycla Low. is said to be an aberration of this species. 
T. symmomus Him. (167 d) resembles a gigantic form of the preceding species. Both the wings symmomus. 
with large discal spots being'lighter yellow in the forewing, darker in the hindwing. Also beneath the colouring 
is similar to that of eliena, the hindwing is dark brown with a central spot and a discal row of pupilled spots. 
Large symmomus may attain an expanse of about 50 mm. The species is distributed from Queensland to Victoria 
and flies from November till autumn. 
