Gammabracon erythroura ( Cameron, 1905 )

Quicke, Donald L. J., Hogan, James E., Bennett, Andrew M. R., Broad, Gavin R. & Butcher, Buntika A., 2017, Partial revision of the Indo-Australian braconine wasp genus Gammabracon Quicke (Hymenoptera: Braconidae) with descriptions of new species from Indonesia (Mollucas), Malaysia, Philippines and Thailand, Journal of Natural History 51 (21 - 22), pp. 1249-1294 : 1281

Gammabracon erythroura ( Cameron, 1905)

( Figure 21 )

Iphiaulax erythroura Cameron 1905:85 .

Gammabracon erythroura: Quicke 1985a:350 .

Material examined

Two clearly conspecific female specimens from ‘Kandy’ [ SRI LANKA] are present in the BMNH type collection under 3c.389 with identical data labels and both bearing Cameron’ s hand-written type label ( Figure 21a, b ). Baltazar (1972) claimed to have designated a lectotype, but there is no indication in her paper about which one it is and therefore that designation would appear to be invalid. We hereby designate as lectotype the specimen with NHM specimen number NHMUK010209584 since its wings are well spread.

Comments

This is one of two species of Gammabracon with the 5th and 6th metasomal tergites partly or entirely rufous, the other being G. curticornis sp. nov. Gammabracon erythroura can be distinguished from G. curticornis by forewing vein cu-a of the latter species being strongly postfurcal compared to only marginally postfurcal in G. erythroura ( Figure 21e, f ) and by the far greater number of antennal segments in G. erythroura , c.65 compared to 38–41.

Additional features. Length of body 12.0 mm, of forewing 12.0 mm; of antenna 12.0 mm; of ovipositor 17 mm. Antenna with 65 flagellomeres; width of face:height of eye = 1.9:1.0:1.0; frons gradually impressed towards midlongitudinal sulcus; length of head behind eye 0.73 × length of eye in dorsal view; scutellar sulcus with only small midposterior notch ( Figure 21e ); posterior margin of propodeum medially sharply defined from transverse subposterior depression, and medially with a distinct pit.

Figures

Figure 21. Gammabracon erythroura. (a, b) Labels of lectotype and paralectotype, respectively. (c) Habitus of paralectotype, lateral view. (d) Face of paralectotype. (e, f) Habitus of lectotype, dorsal view. (g) Metasoma of paralectotype, dorsal view.