Megascogaster elongata Baker , 1926

Kittel, Rebecca N., 2014, Revision of Megascogaster (Hymenoptera, Braconidae, Cheloninae), with a new species from Sulawesi, Indonesia, Zootaxa 3860 (4), pp. 371-378 : 373-375

Megascogaster elongata Baker, 1926

( Fig. 1 , 2 a–e)

Megascogaster elongata Baker, 1926: 487 .

Type. PHILIPPINES: Holotype: 1 ♂: “Dapitan, Mindanao” ( NMNH), examined. Other material: 1 ♀, same as holotype ( NMNH), examined.

Diagnosis. Megascogaster elongata differs from M. wallacei by the ratio of length of fore wing to length of body 0.67 (0.75 in M. wallacei ), having a complete occipital carina, not having propodeal tubercules, mesopleura shiny and punctate, legs yellow, and females with 30 antennomeres.

Redescription (male). Body measurements. Length of body 6 mm; ratio of antenna length to body length 0.9; ratio of fore wing length to body length 0.6; ratio of metasoma to mesosoma length 1.7.

Head. Thirty-three antennomeres; ratio of third antennomere to fourth 1.2; length of third, fourth, and penultimate antennomeres 5.7x, 5.2x, and 1.7x their width, respectively; ratio of length of eye in dorsal view to length of temple 1.6; ratio of posterior ocelli:POL:LOL:OOL 1.0:1.5:0.9:3.5; frons rugose; ratio of width of face in frontal view to its height 1.4; ratio of length of malar space to base of mandible 1.2; ratio of clypeus width to its length 1.4; clypeus convex and punctate; face concave and punctate; vertex punctate.

Mesosoma. Medial and lateral lobe of mesoscutum smooth; mesoscutellum shiny and punctate; propodeum areolate, with propodeal tubercules absent; ratio of height of mesosoma to its length 0.7; ratio of length of hind tibia to length of hind tarsus 1.0; fore wing: ratio of 1-R1 to pterostigma 1.0; ratio of width of pterostigma to its length 4.3; ratio of r:3-SR:SR-1:r-m 1.0:1.7:6.2:0.7; ratio r to 2-SR 3.3, 2-SR straight; ratio 1-R1 to 2-R1 2.6.

Metasoma. Carapace in dorsal view elongate, ratio of width to length 0.29; posterior end of carapace elongated, without lobes or teeth, strigate.

Colour. Head, mesosoma, and metasoma completely black; mandible ferruginous; antenna brown; pterostigma dark brown; legs orange to light brown; wing venation brown; wings hyaline.

Female. Similar to male with the following exceptions. Length of body 6.25 mm; ratio of metasoma to mesosoma length 1.8.

Head. Thirty antennomeres; ratio of clypeus width to its length 1.5; ratio of posterior ocelli:POL:LOL 1.0:1.1:0.8.

Fore wing. Ratio of width of pterostigma to its length 3.2. Metasoma. Carapace in dorsal view long elongate, ratio of width to length 0.31. Distribution. Known from the type locality Dapitan, Mindanao, Philippines. Biology. Unknown.

Figures

FIGURE 1. Megascogaster elongata Baker, 1926, male, holotype, habitus dorso-lateral, scale bar = 1 mm.

FIGURE 2. Megascogaster elongata, male, holotype, a head frontal, b head dorsal, c mesosoma lateral, d posterior end of metasoma lateral, e fore wing; scale bars a, c, d, e = 1 mm, b = 0.5 mm.