Insecta Mundi, Volume 17 (2003)
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In an attempt to more consistently apply generic concepts, 13 species of Mordellidae are transferred to different genera. Mordellistena bihamata (Melsheimer) and Mordellistena discolor (Melsheimer) are transferred to Falsomordellistena Ermisch, 1941, while 11 species (Mordellistena ancilla LeConte, Mordellistena floridensis Smith, Mordellistena guttulata Helmuth, Mordellistena impatiens LeConte, Mordellistena infima LeConte, Mordellistena lecontei Ermisch, Mordellistena minutalis Liljeblad, Mordellistena nigricans Melsheimer, Mordellistena parva Liljeblad, Mordellistena semiusta LeConte, and Mordellistena testacea Blatchley) are transferred to Mordellina Schilsky, 1908. Two species, Mordellistena rufa Liljeblad and Mordellina ustulata (LeConte), are proposed as junior synonyms of Mordellina ancilla (LeConte).
Descriptions are given of the new species Anacis ignifera and A. flammigera from Mérida State, Venezuela and of A. umbrifera from Machu Picchu, Perú. These belong to a tropical Andean lineage with strongly projecting propodeal cristae and pictured wings. Anacis hercana Porter, a Chilean species long known only from the holotype taken at El Canelo near Santiago, now is documented by a second specimen from nearby Río Clarillo. Biconus Townes (1969) is synonymized under Anacis Porter (1967a). Anacis apoeca (Porter), A. atrorubra (Townes), and A. subflava (Porter) are new combinations in Anacis. The South American species of Anacis are keyed.
The first and second instars of Lecanodiaspis tingtunensis are described and illustrated. First instars are distinguished from other species of Lecanodiaspis by the arrangement of dorsal 8-shaped pores in six complete longitudinal rows and a partial row in the thoracic region and the number of labial, anal plate, and spiracular setae. Second instars are dimorphic with males possessing well developed 5-segmented legs, dorsal tubular ducts, and long hair-like setae on the venter between the antennae and on the abdominal segments. Females have fewer 8-shaped pores in transverse rows on the dorsum, as well as legs reduced to stubs and only one pair of hair-like medial setae on the venter.
A new species of Dacne Latreille from Brazil, D. (Dacne) ducke, n. sp., and a new specimen of Dacne brodzinskyi Skelley (amber fossil) show characteristics presently unreported for the genus. Dacne ducke is the first member of the tribe Dacnini to be discovered in South America. A checklist of species and updates to an identification key for all known species are presented.
A new species of Lomanoxia Martínez is described from Costa Rica: L. canthonopsis Skelley and Howden. This represents the first member of the genus reported from Central America. The status of the tribe Lomanoxini Stebnicka is evaluated and is here synonymized under Eupariini LePeletier and Serville.