Aglyptinus sp.

Seago, Ainsley E. & Wheeler, Quentin D., 2004, Two New Species of Aglyptinus Cockerell with Unusual Sexually Dimorphic Antennae and Diffraction Gratings (Coleoptera: Leiodidae), The Coleopterists Bulletin 58 (2), pp. 235-244 : 242

Aglyptinus sp.

( Figs. 4 , 7 )

Males without modified antennae were collected in association with both A. tumerus and A. phymaphorus , and mixed series of A. tumerus and unmodified males were observed in the Lund, EMEC, and Snow Museum material. We note this association in part because of the similarity (aside from antennal structure) of these males to our newly described species and because they are also candidates for association with females present. These males are most likely a distinct species, relatively recently divergent from the ancestral tumerus / phymaphorus lineage.

The unnamed males resemble A. tumerus and A. phymaphorus in size, shape, and color, including elytral spectral iridescence and small, triangular pigmented spots near the tips of the elytra. Aside from their unmodified antennae, they differ most conspicuously in having the reservoir near the base of the flagellum very large and in having small flanges on the flagellum ( Fig. 7 ). Revision of the genus being outside the scope of this study, the state of Aglyptinus taxonomy does not permit us to provide a credible name for these ‘‘normal’’ males.

Material Examined. Fifteen males collected with A. phymaphorus holotype, ‘‘ Costa Rica, Tres Rios, 8.xii.1955, B. Malkin, in mushrooms on trees’’ ( EMEC). 14 males collected with A. tumerus , ‘‘ Costa Rica, Puntarenas, Monte Verde , ca. 1,600 m, 11.III.1986, M. Sorensson’ ’ ( MZLU) 10 males collected with A. tumerus , ‘‘ Costa Rica, Puntarenas, Reserva Biologica de Monteverde , 1,580 m nr. Quelorada cuecha, on Senero Rio by J. Ashe , R. Brooks , R. Leschen , 13 May 1989.’’ (Snow Ent. Mus. Costa Rica Expedition #149)

Figures

Figs. 2–4. Antennae of males. 2) Aglyptinus tumerus; 3) A. phymaphorus; 4) associated unmodified male, Aglyptinus sp.

Figs. 5–7. Median lobe of male genitalia. 5) Aglyptinus phymaphorus; 6) A. tumerus; 7) Aglyptinus sp.