Indabracon discolor, Li & Tang & Chen, 2020

Li, Yang, Tang, Pu & Chen, Xue-xin, 2020, The genus Indabracon van Achterberg (Hymenoptera, Braconidae, Braconinae) in China, with description of four new species, Journal of Hymenoptera Research 76, pp. 39-56 : 39

publication ID

https://dx.doi.org/10.3897/jhr.76.50794

publication LSID

lsid:zoobank.org:pub:BF46486F-0940-4DAF-9144-10780157BEA0

persistent identifier

https://treatment.plazi.org/id/397DBCAC-5BB8-4675-87BD-3B9FA19B2A49

taxon LSID

lsid:zoobank.org:act:397DBCAC-5BB8-4675-87BD-3B9FA19B2A49

treatment provided by

Journal of Hymenoptera Research by Pensoft

scientific name

Indabracon discolor
status

sp. nov.

Indabracon discolor sp. nov.

Figs 3 View Figure 3 , 4 View Figure 4

Type material.

Holotype. ♀, China, Yunnan Prov., Xishuangbanna Meng’a, 1050-1080m, 20.VIII.1958, Pu Fuji, No. IOZ(E)1964571 (IZCAS). Paratypes: 1♀, same label data, but Wang Shuyong, No. IOZ(E)1964563 (IZCAS).

Diagnosis.

This new species is very similar to I. albogilvus sp. nov., but can be separated from the latter by the following characters: head largely reddish brown, but face reddish yellow (largely yellow in I. albogilvus ); mesoscutum reddish brown (yellow, but lobes with black spot in I. albogilvus ); hind wing vein 2-SC+R longer than vein 1r-m (shorter than vein 1r-m in I. albogilvus ); in dorsal view length of eye 3.0 times temple and temples strongly narrowed behind eyes (length of eye 2.6 times temple and temples gradually narrowed behind eyes in I. albogilvus ).

Description.

Holotype, ♀, length of body 9.7 mm, of fore wing 9.1 mm, of ovipositor sheath 5.6 mm.

Head. Antenna with 56 segments; apical antennal segment strongly acute, 1.8 times longer than its maximum width (Fig. 4l View Figure 4 ); third segment 1.2 and 1.3 times longer than fourth and fifth, respectively, the latter as long as wide; length of maxillary palp 0.8 times height of head; malar suture rather weak, punctate and with short setae (Fig. 4i View Figure 4 ); clypeus height: inter-tentorial distance: tentorio-ocular distance = 3: 14: 7; clypeus with dense, long setae; eye hardly emarginated (Fig. 4g View Figure 4 ); face coarsely rugose, with some striae and long setae laterally (Fig. 4g View Figure 4 ); eye height: shortest distance between eyes: head width = 22: 18: 39; frons largely smooth except for a few weak punctures, with some sparse short setae and a strong median groove (Fig. 4h View Figure 4 ); vertex largely smooth except for a few weak punctures, and with some sparse short setae; POL: OD: OOL = 3: 4: 6; length of malar space 1.3 times basal width of mandible; length of eye 3.0 times temple in dorsal view; temples largely glabrous except for a few long setae, and directly narrowed behind eyes (Fig. 4h View Figure 4 ).

Mesosoma. Length of mesosoma 1.7 times its height (Fig. 4c View Figure 4 ); notauli impressed anteriorly half (Fig. 4d View Figure 4 ); mesoscutum smooth, with sparse long setae (Fig. 4d View Figure 4 ); scutellar sulcus wide, deep, and with crenulae (Fig. 4d View Figure 4 ); scutellum distinctly convex, moderately densely punctate, and with dense short setae posteriorly; metanotum strongly convex medially, and with a short median carina anteriorly (Fig. 4d View Figure 4 ); propodeum largely smooth except for a few weak punctures and some crenulae medio-posteriorly, and with sparse setae medially, and dense, long setae laterally (Fig. 4d View Figure 4 ).

Wings. Fore wing (Fig. 4a View Figure 4 ): SR1: 3-SR: r = 29: 26: 4; 1-SR+M strongly angled after arising from 1-M, and 1.5 times longer than 1-M; 2-SR: 3-SR: r-m = 8: 26: 7; CU1b 0.5 times as long as 3-CU1; cu-a weakly postfurcal, and rather weakly bent basally towards base of wing. Hind wing (Fig. 4b View Figure 4 ): 1r-m more or less straight; SC+R1: 2-SC+R: 1r-m = 23: 10: 7.

Legs. Length of fore femur: tibia: tarsus = 21: 25: 30; length of hind femur: tibia: basitarsus = 33: 50: 18; length of femur, tibia and basitarsus of hind leg 3.7, 8.3 and 6.0 times their maximum width, respectively.

Metasoma. Length of T1 1.1 times its apical width, median area convex and coarsely rugose, lateral areas largely smooth except for with a few striae anteriorly (Fig. 4j View Figure 4 ); lateral grooves of T1 sparsely crenulate (Fig. 4j View Figure 4 ); T2 largely coarsely sculptured, but medio-basal area smooth (Fig. 4e View Figure 4 ); antero-lateral grooves of T2 strongly developed and crenulate (Fig. 4e View Figure 4 ); second suture deep and crenulate, wide and straight medially, narrow laterally (Fig. 4e View Figure 4 ); T3-4 with antero-lateral grooves, and latero-posterior corner medium-sized; T3-5 coarsely sculptured, and with crenulate transverse subposterior groove (Fig. 4e View Figure 4 ); T6-7 largely weakly rugose, and with spare long setae posteriorly; hypopygium acute apically, not reaching level of apex of metasoma; ovipositor sheath 0.6 times as long as fore wing.

Colour. Largely black (Fig. 3 View Figure 3 ); head and mesosoma largely reddish brown, but antenna, eyes, mandible apically and propodeum black, face reddish yellow (Fig. 4c, d, g View Figure 4 ); fore femur and tibia somewhat infuscate; T1 whitish yellow (Fig. 4j View Figure 4 ); wing membrane infuscate, pterostigma and veins dark brown (Fig. 4a, b View Figure 4 ).

Variation. Length of body of female 7.3-9.7 mm, of fore wing of female 6.8-9.1 mm, and of ovipositor sheath 2.7-5.6 mm; ovipositor sheath 0.4-0.6 times as long as fore wing; fore femur and tibia sometimes reddish yellow ventrally.

Biology.

Unknown.

Distribution.

China (Yunnan).

Etymology.

Named after the T1 whitish yellow, while the remainder tergites black: " Indabracon discolor " is Latin for "not of the same color".

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Hymenoptera

Family

Braconidae

Genus

Indabracon