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Catalogue of the dipterous insects collected at Singapore and Malacca cover

Catalogue of the dipterous insects collected at Singapore and Malacca

Chapter 33: Gen. Leptis, Fabr.
By Alfred Russel Wallace
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About This Book

A systematic catalogue of dipterous insects collected at Singapore and Malacca, listing families, genera, and species with concise morphological descriptions, measurements, and precise collection localities. Entries note diagnostic characters, colouration, and intraspecific variation, and record altitudinal and geographic occurrences when known. Numerous taxa are described as new, accompanied by comparative remarks and occasional figures or plates to aid identification, while brief comments indicate wider distributional links to specimens from neighboring islands and regions.

Fam. LEPTIDÆ, Westw.

Gen. Leptis, Fabr.

47. Leptis decisa, n. s., mas. Nigra, capite albo, antennis testaceis basi nigris, thoracis callis testaceis, vittis duabus pectoreque canis, abdomine testaceo, vittâ dorsali fasciisque nigris, femoribus testaceis apice nigris, alis sublimpidis fasciâ apiceque fuscis.

Male. Black. Head white in front. Antennæ testaceous, black towards the base. Humeral calli testaceous. Thorax with two hoary stripes; sides and pectus hoary. Abdomen testaceous, with a black dorsal stripe and a black band on the hind border of each segment. Femora testaceous, with black tips; hind femora black for more than half the length from the tips. Wings nearly limpid, pale brown towards the tips, and with a darker brown band which tapers irregularly from the costa to the hind border and crosses the base of the discal areolet; veins black. Halteres testaceous. Length of the body 4½ lines; of the wings 9 lines.

Malacca.