Baeus reticulatus Veenakumari, 2020

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 : 888-891

Baeus reticulatus Veenakumari , sp. n ( Figures 28 (a–f) and 39(d))

http://www.zoobank.org/ urn:lsid:zoobank.org:act:A4ACC2A4-2620-47AA-9120-456B9BBAD88D

Holotype. Female; body length = 1.16 (1.10–1.21) mm; n = 10

Colour ( Figure 28 (a)). Head honey brown; mesonotum and metasoma blackish brown except yellowish brown posterior tergite; anterior mesoscutellum and propodeum paler; hyperoccipital carina black; mesoscutum and mesoscutellum with a black line followed by a blue line on posterior margin; A1 dark brown with apical yellow patch, A2–A6 dark brown, clava yellow with a dark brown patch apically; legs yellowish brown.

Head ( Figure 28 (a–c,e,f)). Head 1.25 (1.18–1.28)× as wide as high; IOS 0.46 (0.44–0.49)× width of head and subequal to eye length; eye (L: W = 22.9:18.4) setose, touching hyperoccipital carina posteriorly; head height 1.71 (1.68–1.79)× eye length; POL>LOL in ratio of 28.5:15.9; lateral ocellus contiguous with orbits; distance between posterior margin of lateral ocellus and hyperoccipital carina 0.71 (0.69–0.73)× MOD; pilosity sparse and setae short; interantennal process triangular, weakly striate dorsally; length of central keel 0.34 (0.31–0.37)× distance from interantennal process to median ocellus; facial striae long, extending 0.89 (0.84–0.91)× the length from mandibular end to lower orbit; malar striae long; frons adjacent to central keel smooth, followed by reticulations; upper frons and vertex weakly reticulate; gena weakly reticulate, reticulations elongate, with costae on postero-ventral margin, 4.9 (4.8–5.2)× as long as wide; anterior margin of gena in contact with 0.41 (0.39–0.43)× length of ventral margin of eye; length of A1 0.81 (0.78–- 0.83)× that of clava; length of A2 0.25 (0.24–0.27)× that of A1.

Mesosoma ( Figures 28 (a,c,d,f) and 39(d)). Mesoscutum and mesoscutellum 0.32 (0.30–0.38)× and 0.13 (0.12–0.15)× as long as wide, respectively; mesoscutum and mesoscutellum reticulate; mesoscutellum with a fovea on antero-lateral margin;

metascutellum not visible; propodeum smooth dorsally with sparse vertical striae, 0.72 (0.69–0.75)× length of mesoscutellum medially; pilosity sparse and setae short; lateral pronotal area antero-dorsally reticulate-imbricate, postero-dorsally striate, remainder smooth with a deep furrow antero-medially; postero-dorsal margin of lateral pronotal area with two short protuberances; dorsal mesopleuron with transverse costae extending below the level of dorsal metapleuron; mesopleuron ventrally weakly reticulate followed by oblique carinae, remainder smooth; mesopleuron projecting as a short projection ventrally; mesopleural pit elongate; metapleuron predominantly smooth except for weak oblique carinae ventrally; posterior suture of metapleuron straight with a gentle curve medially, dorsally not touching the posterior mesopleuron; dorsal level of posterior metapleural suture ventral to level of antero-lateral margin of T 2; sculpturing of propodeum anterior to spiracle transversely carinate, region posterior to spiracle with three short carinae; region ventral to spiracle with a crescent shaped carina enclosing two short carinae; remainder of lateral propodeum smooth with sparse transverse carinae ventrally; propodeal spiracular opening tear-drop shaped.

Metasoma ( Figure 28 (a,c,f)). Metasoma 1.22 (1.19–1.30)× as long as wide; pilosity sparse, setae short; T 2 finely reticulate, posteriorly smooth; remaining tergites smooth.

Material examined. Holotype: Female ( ICAR / NBAIR / P3141 ), INDIA: Karnataka: Mudigere, College of Horticulture , 13 ° 06 ʹ 54 ʹ ’ N 75 ° 37 ʹ 57 ʹ ’E, 976 m, MT, 02.X.2015 ; Paratypes: 1 female ( ICAR / NBAIR / P3142 ), same as holotype; 2 females ( ICAR / NBAIR / P3143 , P3146 ), same as holotype, YPT; 1 female ( ICAR / NBAIR / P3144 ), same as holotype, 29 .IX .2015; 1 female ( ICAR / NBAIR / P3145 ), same as holotype, LT, 30 .IX .2015; 1 female ( ICAR / NBAIR / P3147 ), Karnataka: Bengaluru, Jarakabande Kaval , 13 ° 05 ʹ 41 ʹ ’ N 77 ° 32 ʹ 35 ʹ ’E, 921 m, MT, 04 .X .2013; 6 females ( ICAR / NBAIR / P3148 – P3153 ), same as P3147, YPT, 27 .IX .2013; 4 females ( ICAR / NBAIR / P3154 – P3157 ), same as P3147, YPT, 23 .VIII .2014; 1 female ( ICAR / NBAIR / P3158 ), same as P3147, MT, 21 .VIII .2013; 1 female ( ICAR / NBAIR / P3159 ), same as P3147, YPT, 17 .VIII .2013; 2 females ( ICAR / NBAIR / P3160 – P3161 ), Karnataka: Bengaluru, Attur , 13 ° 05 ʹ 48 ʹ ’ N 77 ° 33 ʹ 59 ʹ ’E, 936 m, PFT, 22 .VII .2013; 1 female ( ICAR / NBAIR / P3162 ) same as P3160, 09 .XII .2010; 1 female ( ICAR / NBAIR / P3163 ) same as P3160, 14 .X .2011; 1 female ( ICAR / NBAIR / P3164 ) same as P3160, YPT, 28 .I .2013; 3 females ( ICAR / NBAIR / P3165 – P3167 ) same as P3164, 15 .XII .2012; 3 females ( ICAR / NBAIR / P3168 – P3170 ) same as P3164, 24 .XII .2012; 7 females ( ICAR / NBAIR / P3171 – P3177 ) same as P3164, 05 .I .2013; 2 females ( ICAR / NBAIR / P3179 – P3180 ) same as P3164, 27 . XI .2012; 1 female ( ICAR / NBAIR / P3181 ) same as P3164, 12 .XII .2012; 2 females ( ICAR / NBAIR / P3182 , P3185 ) same as P3160, 01 .I .2013; 1 female ( ICAR / NBAIR / P3183 ) same as P3164, 15 . XII .2012; 1 female ( ICAR / NBAIR / P3184 ) same as P3164, 23 .XII .2011; 1 female ( ICAR / NBAIR / P3186 ) same as P3164, 05 .I .2013; 1 female ( ICAR / NBAIR / P3187 ) same as P3160, 24 .XII .2012; 1 female ( ICAR / NBAIR / P3188 ) same as P3164, 26 .X .2011; 1 female ( ICAR / NBAIR / P3189 ) same as P3164, 13 .IX .2011; 1 female ( ICAR / NBAIR / P3190 ) same as P3160, 13 .I .2012; 1 female ( ICAR / NBAIR / P3191 ) same as P3164, 28 .I .2013; 1 female ( ICAR / NBAIR / P3192 ), Karnataka: Bengaluru, GKVK, 13 ° 04 ʹ 25 ʹ ’ N 77 ° 34 ʹ 49 ʹ ’ E, 938 m, PFT 24 .IX .2011; 1 female ( ICAR / NBAIR / P3193 ), same as P3192, 27 .XII .2011; 1 female ( ICAR / NBAIR / P3194 ), Karnataka: Kolar, Gauribidanur , 13 ° 36 ʹ 40 ʹ ’ N 77 ° 31 ʹ 01 ʹ ’E, 692 m, SN 07 .XII .2010; 3 females ( ICAR / NBAIR / P3195 – P3197 ), Karnataka: Bengaluru, Hebbal , 13 ° 02 ʹ 08 ʹ ’ N 77 ° 35 ʹ 49 ʹ ’E, 906 m, PFT, 22 . II .2010; 1 female ( ICAR / NBAIR / P3198 ), Karnataka: Bengaluru, Hessaraghatta , 13 ° 08 ʹ 01 ʹ ’ N 77 ° 29 ʹ 27 ʹ ’E, 859 m, YPT, 07 .IX .2016; 1 female ( ICAR / NBAIR / P3199 ), same as P3198, 21 . V .2010; 2 females ( ICAR / NBAIR / P3200 – P3201 ), same as P3195, 20 .III .2010; 1 female ( ICAR / NBAIR / P3202 ), same as P3195, 19 .I .2010; 1 female ( ICAR / NBAIR / P3203 ), same as P3195, YPT, 15 . X .2013; 1 female ( ICAR / NBAIR / P3204 ), Karnataka: Chikkaballapur, Nandi Hills , 13 ° 37 ʹ 02 ʹ ’N 77 ° 68 ʹ 34 ʹ ’E, 1448 m, SN, 22 .IV .2010; 1 female ( ICAR / NBAIR / P3205 ), South Andaman: Sippighat , 11 ° 36 ʹ 17 ʹ ’ N 92 ° 41 ʹ 12 ʹ ’E, 8 m, YPT, 23 .II .2012; 2 females ( ICAR / NBAIR / P3206 – P3207 ), Andaman Islands: South Andaman , Garacharma, CIARI, 11 ° 61 ʹ 29 ʹ ’N 92 ° 71 ʹ 54 ʹ ’E, 63 m, YPT, 22 .II .2012; 7 females ( ICAR / NBAIR / P3208 – P3214 ), same as P3206, 26 .I .2013; 3 females ( ICAR / NBAIR / P3215 – P3217 ), Andaman islands: Little Andaman, Forest Nursery , 10 ° 36 ʹ N 92 ° 32 ʹ E, 7 m, MT, 30 .I .2013; 3 females ( ICAR / NBAIR / P3218 – P3220 ), same as P3206, 26 .III .2016; 1 female ( ICAR / NBAIR / P3221 ), South Andaman, Chouldari, Bloomsdale , 11 ° 3’825 ʹ ’ N 92 ° 39 ʹ 40 ʹ ’E, 11 m, YPT, 26 .III .2016; 2 females ( ICAR / NBAIR / P3222 – P3223 ), same as P3206, SN, 22 .II .2012; 18 females ( ICAR / NBAIR / P3224–3238 , P3243 – P3245 ), Tamil Nadu: Yercaud, HRS, 11 ° 47 ʹ 44 ʹ ’ N 78 ° 12 ʹ 42 ʹ ’E, 1399 m, YPT, 04–05 .VIII .2016; 4 females ( ICAR / NBAIR / P3239 – P3242 ), same as P3224, MT, 06 .VIII .2016; 1 female ( ICAR / NBAIR / P3246 ), Tamil Nadu: Dharmapuri, Hosur, Uddanapalli , 12 ° 37 ʹ 28 ʹ ’ N 77 ° 55 ʹ 29 ʹ ’E, 758 m, YPT, 28 .X .2015; 2 females ( ICAR / NBAIR / P3247 – P3248 ), Tamil Nadu: Dharmapuri, Kelamangalam, Jakkeri , 12 ° 42 ʹ 17 ʹ ’ N 77 ° 48 ʹ 37 ʹ ’E, 899 m, YPT, 18 . V .2015; 1 female ( ICAR / NBAIR / P3249 ), Karnataka: Bengaluru, Attur , 13 ° 05 ʹ 48 ʹ ’ N 77 ° 33 ʹ 59 ʹ ’E, 936 m, MT, 14 .X .2013; 1 female ( ICAR / NBAIR / P3250 ), Karnataka: Bengaluru, Jarakabande Kaval , 13 ° 05 ʹ 41 ʹ ’ N 77 ° 32 ʹ 35 ʹ ’E, 921 m, MT, 07 .XI .2013; 1 female ( ICAR / NBAIR / P3251 ), Tamil Nadu: Lower Pulney Hills , Thadiyankudisai, HRS, 10 ° 17 ʹ 58 ʹ ’ N 77 ° 42 ʹ 42 ʹ ’E, 990 m,YPT, 26 . VI .2015; 1 female ( ICAR / NBAIR / P3252 ), Tamil Nadu: Valparai , 10 ° 19 ʹ 24 ʹ ’ N 76 ° 57 ʹ 03 ʹ ’E, 1061 m, YPT, 03 .VII .2014; 8 females ( ICAR / NBAIR / P3284 – P3291 ), Karnataka: Bengaluru, Hessaraghatta , 13 ° 08 ʹ 01 ʹ ’ N 77 ° 29 ʹ 27 ʹ ’E, 859 m, reared from spider eggs, 30 .XI .2013.

Etymology. The epithet ‘reticulatus’ refers to the fine reticulations on the metasoma. The name is treated as an adjective.

Diagnosis. This species is similar to B. primitus but differs from it in having a straight metapleural suture which does not curve dorsally towards mesopleuron, region ventral to propodeal spiracle with a crescent shaped carina enclosing two short carinae; whereas in B. primitus the metapleural suture curves dorsally touching posterior mesopleural suture; region ventral to propodeal spiracle with a vertical carina bending ventrally towards posterior margin of propodeum. In B. reticulatus sp. n. head is honey brown and rest of body dark brown while in B. primitus entire body is dark brown.

Figures

Figure 28. Baeus reticulatus sp. n. (a) Habitus (colour); (b) Frons; (c) Habitus; (d) Mesonotum; (e) Antenna; (f) Habitus (lateral view).