Amillarus secundus ( Tippmann, 1951 )

Santos-Silva, Antonio & Galileo, Maria Helena M., 1857, OnAmillarusThomson, 1857 (Coleoptera: Cerambycidae): Types, Variation, and a New Synonym, The Coleopterists Bulletin 1857 (4), pp. 805-811 : 805-811

Amillarus secundus ( Tippmann, 1951) ( Figs. 10–13 )

Didymonycha secunda Tippmann 1951: 301 . Amillarus secunda ; Breuning 1962: 34. Didymonycha secunda ab. infuscata Tippmann

1951: 301 (nomen nudum).

Comparing photographs of the holotype of A. secundus and the “ holotype ” of A. secundus ab. infuscata with the holotype of A. apicalis , we found only a single difference: the outer elytral angle in the holotype of A. secundus ( Fig. 10 ) is notably spiny, while A. apicalis ( Fig. 7 ) has a short spine. However, without doubt, it is not as in the drawing by Tippmann (1951) ( Fig. 12 ). Notwithstanding, the elytra in the “ holotype ” of A. secundus ab. infuscata ( Fig. 11 ) is much more similar to that of A. apicalis than that of the holotype of A. secundus , and notably different from the drawing ( Fig. 13 ) by Tippmann (1951). Furthermore, the elytra in the aberration described by Tippmann (1951) are different; the left elytron is shorter than the right elytron. In other words, the elytral apex in A. secundus ab. infuscata is intermediate between A. secundus and A. apicalis . This suggests that A. secundus is just a specimen of A. apicalis with aberrant elytral apices. The remaining features (elytral sculpture, metasternal sculpture, legs (including metatarsomere V), shape of and pubescence on pronotum, pubescence on elytra) are much as in A. apicalis . For the time being, we prefer to keep this species as different from A. apicalis .

Geographic Distribution. Costa Rica, Venezuela.

Figures

Figs. 7–14. 7) Amillarus apicalis, holotype; 8) Labels for holotype of A. apicalis; 9) Amillarus mutabilis, syntype; 10) Didymonycha secunda, holotype male, elytral apices; 11) D. secunda ab. infuscata, “holotype” male, elytral apices; 12) D. secunda, holotype male, elytral apex, drawing by Tippmann (1951); 13) D. secunda ab. infuscata, “holotype” male, elytral apex, drawing by Tippmann (1951); 14) Trichogrammopsis ruficollis, holotype male.