Baeus airavata Veenakumari

Kamalanathan, Veenakumari, Mohanraj, Prashanth, Samuel, D. K. & Reddy, M. Krishna, 2020, Revision of Indian species of Baeus Haliday (Hymenoptera: Platygastroidea: Scelionidae), Journal of Natural History 54 (13 - 14), pp. 813-917: 833-834

publication ID 10.1080/00222933.2020.1770885

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Baeus airavata Veenakumari

sp. n.

Baeus airavata Veenakumari   , sp. n. ( Figure 3 View Figure 3 (a–e))

Holotype. Female; body length = 0.61 (0.51–0.68) mm; n = 5

Colour ( Figure 3 View Figure 3 (a)). Head, mesonotum and metasoma dark brown, mesoscutellum and propodeum a shade paler than the rest; hyperoccipital carina black; posterior margin of mesoscutellum with a black band; antennomeres brown except yellowish brown patches on apical A1 and A2; legs yellowish brown.

Head ( Figure 3 View Figure 3 (a–e)). Head as wide as high; IOS 0.60 (0.55–0.63)× width of head and 1.85 (1.80–1.91)× eye length; eye small (L:W = 7.6:4.8), setose, not touching hyperoccipital carina posteriorly; head height 3.1 (3.0–3.4)× eye length; POL>LOL in ratio of 13.7:7.9; lateral ocellus away from orbits, OOL subequal to MOD; distance between posterior margin of lateral ocellus and hyperoccipital carina 1.50 (1.48–1.51)× MOD; pilosity of moderate density, setae of medium length; interantennal process triangular, smooth; length of central keel 0.53 (0.48–0.56)× distance to median ocellus; facial striae extending 0.50 (0.48–0.56)× length between mandibular end to lower orbit; malar striae sparse; frons and vertex smooth; gena smooth, 3.40 (3.38–3.44)× as long as wide, anterior margin of gena in contact with 0.64 (0.63–0.68)× length of ventral margin of eye; length of A1 subequal to that of clava; length of A2 0.44 (0.41–0.46)× that of A1.

Mesosoma ( Figure 3 View Figure 3 (a,c,e)). Mesoscutum and mesoscutellum 0.45 (0.41–0.50)× and 0.15 (0.14–0.17)× as long as wide, respectively; mesoscutum anteriorly weakly coriaceous reticulate and posteriorly smooth; mesoscutellum predominantly smooth; metascutellum not visible; propodeum smooth dorsally, as long as mesoscutellum medially; pilosity of moderate density, setae of medium length; lateral pronotal area antero-dorsally imbricate, remainder smooth except for transverse carinae ventrally; postero-dorsal margin of lateral pronotal area with two short, weak projections; ventral margin of lateral pronotal area extending as a blunt projection; transverse carinae on dorsal mesopleuron terminate above the level of dorsal metapleuron; mesopleuron ventrally weakly reticulate, followed by oblique carinae, remainder smooth; mesopleuron extending as a short projection ventrally; mesopleural pit not distinct; metapleuron entirely smooth except for two uneven foveae ventrally; posterior suture of metapleuron straight, dorsally indicated by a furrow; dorsal level of posterior metapleural suture ventral to level of antero-lateral margin of T 2; sculpturing of propodeum anterior to spiracle with a short carina, region posterior to spiracle smooth with a carina on dorsal and ventral ends of spiracle; region ventral to spiracle with transverse carinae followed by two oblique carinae; remainder of lateral propodeum smooth; opening of propodeal spiracle small, round.

Metasoma ( Figure 3 View Figure 3 (a,c,e)). Metasoma as long as wide; pilosity of moderate density, setae of medium length, longer than those on head and mesonotum; T 2 predominantly smooth; remaining tergites smooth.

Material examined. Holotype: Female ( ICAR / NBAIR / P3090), INDIA: Rajasthan: Udaipur, Badagaon , 24 ° 38 ʹ 11 ʹ ’ N 73 ° 40 ʹ 48 ʹ ’ E, 178 m, YPT, 24.IX.2016   ; Paratypes: 29 females ( ICAR / NBAIR / P3091 P3118, P3135), same as holotype; 9 females ( ICAR / NBAIR / P3119 P3123, P3130 P3131, P3133, P3134), Rajasthan: Ajmer , National Research Centre on Seed Spices ( NRCSS), 26 ° 21 ʹ 56 ʹ ’ N 74 ° 35 ʹ 36 ʹ ’E, 445 m, YPT, 21–27   .IX   .2016; 8 females ( ICAR / NBAIR / P3124 P3129, P3132, 3136), Rajasthan: Udaipur , MPUAT, 24 ° 36 ʹ 02 ʹ ’ N 73 ° 44 ʹ 21 ʹ ’E, 583 m, YPT, 22–25   .IX   .2016; 1 female ( ICAR / NBAIR / P3137), same as holotype, MT, 29   . IX   .2016; 2 females ( ICAR / NBAIR / P3138 P3139), Tamil Nadu: Dharmapuri, Kelamangalam, Jakkeri, 12 ° 42 ʹ 17 ʹ ’ N 77 ° 48 ʹ 37 ʹ ’E, 899 m, YPT, 03   .III   .2015; 1 female ( ICAR / NBAIR / P3140), same as P3138, 18   . V.2015.

Etymology. This species is named after ‘Airavata’, a mythical white elephant, the mount of the Hindu God Indra. The name is treated as a noun in apposition.

Diagnosis. Species is closer to B. urvashi   sp. n. and differs from it in the following combination of characters. Dorsal propodeum in B. airavata   sp. n. is as long as mesoscutellum medially whereas in B. urvashi   sp. n. it is at most 1/4 th length of mesoscutellum; pilosity on body less dense and gena narrower in B. airavata   sp. n than in B. urvashi   sp. n. Posterior margin of eye further away from hyperoccipital carina in B. airavata   sp. n. than in B. urvashi   sp. n.; region ventral to propodeal spiracle with a inverted horse-shoe shaped carina in B. urvashi   sp. n., while the sculpture is different in B. airavata   sp. n. B. airavata   sp. n. is also closer to B. longiabdominalis   sp. n.; the diagnosis is given under the latter.


Institute of Oceanographic Sciences


University of Modena and Reggio Emilia, Department of Biology


Tavera, Department of Geology and Geophysics


Mus. Tinro, Vladyvostok


Royal British Columbia Museum - Herbarium