Apophysius takasukai Pham, Konishi & Broad, 2020

Pham, Nhi Thi, Matsumoto, Rikio, Konishi, Kazuhiko, Sheng, Mao-Ling & Broad, Gavin R., 2020, A review of the genus Apophysius Cushman (Ichneumonidae: Phygadeuontinae) with descriptions of six new species, Zootaxa 4802 (2), pp. 301-316 : 310-311

Apophysius takasukai Pham, Konishi & Broad , new species

( Figures 1e , 6 )

Material examined. Holotype: female ( EUMJ), MALAYSIA: 19 miles Point Cameron H.L., Keizô Takasuka coll., 18 May 2007.

Paratype: male ( NHMUK), MALAYSIA: ‘ Sarawak, foot of Mt Dulit , junction of rivers Tinjar and Lejok, B.M. B.M. Hobby & A.W. Moore coll., 11 November 1932, 1933-254’. NHMUK010634951 .

Diagnosis. Propodeum with area superomedia not projecting, in same plane as area basalis; mesosoma and legs largely yellow with mesoscutum largely black; wings brown, transparent, fore wing with anterior margin darker in the female.

Description of holotype. Head. Antenna with apical part broken (31 flagellomeres remaining), first flagellomere 3.0× longer than wide, 1.5× length of second; dorsal margin of face with small tubercle between antennal sockets; face 0.58× as high as wide with weak impression from antennal socket toward clypeus; clypeus 0.67× as high as wide, separated from face by weak impression; malar space short, about 0.2× mandibular basal width ( Fig. 6a ); ocellar-ocular distance about 2.3× diameter of ocellus, 5.7× interocellar distance.

Mesosoma. Epomia strong, sinuous ventrally, extending 2/3 distance to dorsal margin of pronotum; mesoscutum with dense setae, scuto-scutellar groove with weak longitudinal impression medially; scutellum with dense setae, lateral carina only just extending posterior to scuto-scutellar groove, metanotum weakly convex with lateral carinae ( Fig. 6b ); mesopleuron with unsculptured sternaulus strong on anterior 0.4, epicnemial carina sinuous dorsally, extending to anterior margin, subtegular ridge in dorsal view wide and sharply angled; mesosternum with posterior transverse carina strong except broad interruption at level of inner half of mid coxa; propodeum with strongly raised carinae, area superomedia in same plane as area basalis ( Fig. 6c ), propodeal spiracle oval; fore basitarsus 0.86× as long as tarsomeres 2–5 combined; mid basitarsus slightly shorter than tarsomeres 2–5 combined; hind basitarsus equal to tarsomeres 2–5 combined. Fore wing length 8.5 mm, vein M&RS opposite 1 cu-a, vein 2 rs-m about 0.7× 3rs-m, hind wing with first abscissa of vein CU as long as vein cu-a; distal ends of RS, M and CU obsolete, present as traces ( Fig. 6d ).

Metasoma. First tergite smooth, about 6.5× as long as posterior width, posteriorly dorsally and laterally with long setae; second tergite 0.73× as long as first tergite, 3.8× as long as anterior width, 2.1× as long as posterior width; metasoma with second tergite onward densely minutely punctate, with dense setae, shorter than setae on mesosoma; ovipositor 0.73× as long as hind tibia.

Colour. Yellow with black markings as follows: antenna and head dorsally, posterior corner of pronotum dorsally, mesoscutum (except two yellow spots at anterior corners) and axilla, mesopleuron with small black spot at level of sternaulus and a bigger spot at dorsally, posteriorly, metasomal tergites largely black except anterior 0.4 and posterior 0.1 of first tergite, posterior 0.15 of second tergite and tergites 6-7 yellow. Legs yellow, except hind trochanter, trochantellus and femur (except apically) black. Wings hyaline, brown with anterior margin of fore wing blackish.

Male. Similar to female. Antennal flagellum with 42 segments, mesopleuron lacking black spot on sternaulus, metasoma paler (tergites 3–5 yellowish brown, 6–7 yellow), fore wing weakly infuscate, only slightly darker anterodistally.

Comparative notes. Similar to A. bakeri in the shape of the propodeum. Apophysius takasukai sp. nov. can be separated from A. bakeri by the colour pattern and the shorter ovipositor sheath (about 0.8× as long as first tergite vs about 1.0× in A. bakeri ).

Etymology. The new species is named after Keizô Takasuka, who collected the holotype.

Distribution. Malaysia. Currently known from Peninsular Malaysia (Pahang, Cameron Highlands) and Borneo ( Sarawak).

Figures

FIGURE 1. a. Apophysius bakeri Cushman, holotype female (source: NMNH); b. Apophysius baolocensis sp. nov., holotype female; c. Apophysius constrictus sp. nov., holotype female; d. Apophysius latus sp. nov., holotype female; e. Apophysius takasukai sp. nov., holotype female; f. Apophysius taynguyenensis sp. nov., holotype female

FIGURE 6. Apophysius takasukai sp. nov., holotype female: a. face; b. dorsal view of mesosoma, c. propodeum; d. wings (scale bar for Figs 2a, 2c = 0.5 mm)