SUBFAMILY NOCTUINAE
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Ochropleura costalis Moore
Ochropleura costalis
Moore, 1867, Proc. zool. Soc. Lond. 1867: 56.


Ochropleura costalis


Diagnosis.
The forewing costa is broadly pale creamy white, edged posteriorly by a black wedge within which the orbicular and reniform stigmata stand out paler.

Taxonomic notes. In valve shape and in the weaker, fine scobination of the basal lobe of the aedeagus vesica, the single Bornean specimen resembles typical Indian costalis. In Java (slide 12955) there flies a taxon with the valve constricted subapically almost into a cucullus, and with an array of long, needle-like spines on the broad lobe of the aedeagus vesica. There is a further species in Luzon (slide 9677) with an aedeagus similar to costalis but with the basal ventral process of the harpe much more strongly developed. O. ignota Swinhoe from Sri Lanka is somewhat different in facies to the Holarctic plecta and to costalis but has genitalia comparable to those of the latter. O. costalis is more reddish grey with a more uniform submarginal area to the forewing. A single specimen from New Guinea (slide 14082) has genitalia differing slightly from those of costalis (narrower valves, more curved harpe lacking a ventral spur, smaller aedeagus vesica cornutus and much more weakly scobinate ventral lobes) and probably represents a further species in the complex.

Geographical range. N.E. Himalaya, Borneo.

Habitat preference.
Bornean material is limited to a single male without precise data taken in Sabah by H.S. Barlow.

Biology. O. plecta
has been recorded as feeding as a larva on plants from a number of families such as Caryophyllaceae, Chenopodiaceae, Plantaginaceae, Compositae, Polygonaceae and Rubiaceae.

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