Hypocharis arimensis (Fleming, 1957)

Fleming, H. (1957). The Ctenuchidae (Moths) of Trinidad, B.W.I. Part I.
Euchromiinae. Zoologica (New York) 42 (3): 105-130; pp. 120-121, pl. I, fig.
3; pl. II, fig. 3 (as Saurita arimensis, new species).

Saurita arimensis, new species
(Pl. I, fig. 3; Pl. II, fig. 3)

Length of forewing of male 10.5-11.5 mm.

Related to Saurita lacteata Butler from which arimensis differs in having the
discal cell hyaline and in not having a yellowish-white patch below the cell
and another yellowish-white patch beyond the cell.

Antennae bipectinate in the male with each pectination dilated and bristled on
the distal end. Palpi brown, reaching vertex of head with fan-shaped brown
tuft on first segment. Whole head uniform brown.

Patagia and disc of thorax uniform brown with a small white patch on the
mid-dorsum of the metathorax. Tegulae brown with a crimson patch on anterior
margin near patagia (shoulders) and a white bar at discal edge of tegulae on
the anterior margin of forewing. The inner half of tegulae along the disc of
the thorax crimson.

Some white on the outer edge of the basal half of the forecoxae on the
episternum (2nd). The remainder of the legs and the lateral and ventral parts
of the thorax brown.

Fore- and hindwings hyaline. Veins brown. The forewings narrowly bordered with
brown but the apex of the wings broadly brown. The brown patch at the apex
extending within the wing to the point where veins Ra and Rs fork. A
relatively broad brown discal bar (1.25 mm.). Hindwings with narrow brown
margins broadening at apex. At the 1st anal fold the brown color extends
within the wing for approximately one-third of the length of the wing from the
margin, and a brown patch extending into the wing at the anal angle for
approximately the same distance.

Abdomen with the dorsum of the first and second segments and to a variable
extent the third segment creamy white. The bullae creamy white. A creamy white
band extends from bullae along the spiracular region of the abdomen for four
segments. The band is broadest at the base and narrows toward the distal end
of the abdomen. The remainder of the abdomen brown.

The name arimensis has been taken from the type locality, Arima Valley.

Material. All types were taken at Simla, Arima Valley, Trinidad. Holotype,
male, Catalog No. 57200, 2-V; 6 paratypes, (57201) 2-VI, (57202) 16-III,
(57203) 21-IV, (57204) 13-II, (57205) 7-I, (57206) 3-VI.

Cock, M. J. W. & Laguerre, M. (2023). Euchromiina wasp moths (Lepidoptera,
Erebidae, Arctiinae, Arctiini) of Trinidad & Tobago. Living World, Journal of
The Trinidad and Tobago Field Naturalists' Club 2023: p. 33, figs. 60-62 (as
Hypocharis arimensis (Fleming, 1957)).

Identification. This species has translucent areas on both wings; the forewing
with the apex, a patch at the end of the cell and a rectangle at the tornus
black. When combined with the red lines on the tegulae and the white patch on
the basal dorsal abdomen, it is distinctive.