Lagideus flavus Smith

Smith, David R., 2012, The South American genus Lagideus Konow (Hymenoptera: Pergidae: Syzygoniinae), a Supplement, Zootaxa 3413, pp. 1-18 : 9

Lagideus flavus Smith , new species

( Figs. 7, 8 , 19 )

Female. Length, 9.0 mm. Antenna yellow with scape, pedicel, and apical 2 antennomeres black. Head black with labrum white and mandible reddish brown. Thorax black with propleuron mostly yellow, black anteriorly, and pronotum with posterior lobes yellow. Fore and midlegs yellow orange with coxae black; hind leg yellow with coxa reddish brown and somewhat black at base and apex of femur black. Abdomen mostly yellow orange, terga 4–7 with dorsal black spots and segments 8 and 9 black. Wings hyaline, costal cell slightly darker than rest of wings; veins and stigma black. Head: Frons and vertex shiny, lower frons with few punctures; covered with white hairs with length about equal to width of an ocellus. Antennal length about 1.5 × head width; antennomeres 3–7 slightly serrate, each slightly broader at apex than at base; antennomeres 5–7 each about 2.5 × longer than broad. Malar space about one-third diameter of front ocellus. Thorax: Inner hind tibial spur slightly shorter than length of hind basitarsomere. Hind basitarsomere subequal to length of remaining tarsomeres combined. Abdomen: Sheath in lateral view straight above, rounded below; in dorsal view broad at base, tapering to acute apex (similar to Smith 1990, fig. 293). Lancet ( Fig. 19 ) with about 15 serrulae; serrulae with fine anterior and posterior subbasal teeth; depth of serrulae decreasing toward apex; annuli 5–7 and ventrally of 8–13 with fine hairs; hairs on dorsal and ventral halves of lancet of similar width.

Male. Unknown.

Type material. Holotype female “Valle del Cauca, PNN Farallones de Cali Cgto., La Meseta, 3°34’N, 76°40’W, 2080m, Malaise, 09–26.x.2003, S. Sarria & M. Losso leg., M.4557” ( HUM). Paratype: Colombia: Valle del 2, PNN Farallones de Cali Ctgo, La Meseta, 3°34’N, 76°40’W, 2080m, Malaise, 24.ix–9.x.2003, S. Sarria & M. Losso leg., M.4560 (1 Ƥ, USNM).

Etymology. From the Latin flavus , yellow, referring to the brightly colored antennae.

Remarks. This species is distinguished from all other Lagideus species by the orange antennae with the apical two antennomeres black, mostly orange pronotum, orange legs, and orange abdomen with the apical two segments black. It will key to L. effus Smith, 1990 , couplet 5 in my 1990 key, described from Peru. Lagideus effus has the antennae black and the lancet ( Smith 1990, fig. 315) with annular hairs of almost uniform width on annuli 1–10, though slightly longer on dorsal halves of annuli 6–12.

Figures

FIGURES 7 – 8. Lagideus flavus. 7, Lateral view. 8, Dorsal view of head and thorax.

FIGURES 19 – 23. Female lancets. 19, Lagideus flavus. 20, L. albitarsis. 21, L. longicus. 22, L. tapanti. 23, L. isidro.