Cremastobaeus yoganarasimha Veenakumari, 2017

Kamalanathan, Veenakumari & Mohanraj, Prashanth, 2017, The genus Cremastobaeus Ashmead (Hymenoptera: Scelionidae: Cremastobaeini) from India, Journal of Natural History 51 (33 - 34), pp. 1989-2056 : 2047-2051

Cremastobaeus yoganarasimha Veenakumari sp. nov.

( Figures 28 (a–h) and 29(a,b))

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Holotype: Female. Body length = 1.38 mm; (m = 1.41 (1.28–1.49) mm, SD = 0.05, n = 17) Colour ( Figure 28 (a))

Head and mesosoma black; metasoma grey-brown with posterior tergites darker than preceding tergites; in some specimens with dark brown metasoma; A1–A3 brown, A2– A4 with tinge of red, remaining antennomeres dark brown-black; mandibles red-brown; legs yellow-brown.

Head ( Figure 28 (b,c,e))

FCI = 1.4; LCI = 0.93; IOS 0.46× width of head; POL>LOL>OOL in ratio of 10.1:7.7:1.0; eye large (L:W = 18.9:13.1), with not so dense white setae; frontal depression with transverse striae; vertex reticulate to coriaceous reticulate, setose; gena finely reticulate; length and width of antennomeres A1–A 8 in ratio of 14.3:4.3, 5.9:4.1, 5.6:3.5, 3.4:2.7, 3.8:2.5, 3.2:2.9, 3.3:3.2, respectively; length and width of clava 14.7:6.5; radicle 0.2× as long as A1.

Mesosoma ( Figure 28 (c,f–h))

Mesoscutum (L:W = 21.3:25.4) coriaceous reticulate with dense long setae; upper lateral pronotal area coriaceous reticulate, remainder smooth; netrion predominantly smooth with sparse weak striae; speculum with several transverse striae; mesepimeral sulcus foveate; mesopleural depression smooth to weakly reticulate; ventral mesopleuron weakly reticulate; entire metapleuron predominantly smooth except for sparse striae ventrally; paracoxal sulcus foveate; mesoscutellum (L:W = 9.5:13.0) semicircular, coriaceous reticulate, setose; posterior mesoscutellar sulcus foveate with a smooth posterior band; metascutellum triangular (L:W = 3.0:6.2), unevenly vertically striate and foveate on anterior margin; metanotal trough foveate; lateral propodeal area unevenly sculptured; fore wing (L:W = 93.7:31.6) and hind wing (L:W = 79.2:10.1) hyaline with dense microtrichia; length of marginal cilia of fore wing and hind wing 0.14× and 0.5× width of their wings, respectively; length of submarginalis: marginalis: stigmalis: postmarginalis in ratio of 36.3:5.7:6.9:27.0, respectively.

Metasoma ( Figure 28 (d))

(L:W = 67.2:22.7); T1 entirely costate except for a smooth band posteriorly; T2 with basal foveae beneath which costae extending almost entire length of tergite except for a smooth posterior margin; T3 predominantly costate; T4 entirely costate except for reticulations postero-medially; T5 anteriorly costate remainder reticulate; T6–T7 reticulate; length and width of tergites T1–T 7 in ratio of 14.0:12.3, 11.0:18.3, 11.9:22.5, 10.4:22.2, 8.8:18.2, 6.8:13.3, 5.1:5.0, respectively; T1 longest of all tergites followed by T3.

Variation

Metasoma varies in colour from grey-brown to dark brown.

Male ( Figure 29 (a,b))

Body length = 1.363 mm; (m = 1.329 (1.262 –1.385) mm, SD = 0.05, n = 4)

Male similar to female; length and width of antennomeres A1–A 12 in ratio of 12.3:3.8, 5.5:4.1, 5.5:3.5, 5.2:3.3, 4.8:3.1, 5.7:3.3, 5.7:3.9, 5.7:3.8, 5.3:3.9, 4.3:4.1, 7.4:3.8, respectively.

Material examined

Holotype: Female ( ICAR / NBAIR / P1085 ), INDIA: Karnataka: Tumkur, Devarayanadurga , 13.3736°N, 77.2074°E, 1075 m, YPT, 29.I.2016 . Paratypes: 1 female ( ICAR / NBAIR / P1086 ), same data as holotype; 1 female ( ICAR / NBAIR / P1087 ), Karnataka: Kanakapura , 12.5462° N, 77.4198°E, 640 m, YPT, 19 .II .2016; 1 female ( ICAR / NBAIR / P1088 ), Karnataka: Bengaluru, Hebbal, NBAIR, 13.05278°N 77.97833°E, 927 m, YPT, 19 .I .2015; 1 female ( ICAR / NBAIR / P1089 ), Karnataka: Udupi: Bhramavar , 13.4310°N, 74.7454°E, 36 m, YPT, 29 . V .2014; 4 females ( ICAR / NBAIR / P1090 , P1091 , P1092 , P1093 ), Tripura: Agartala, TU, 23.7628°N, 91.2633°E, 17 m, YPT, 03 .III .2016; 1 female, ( ICAR / NBAIR / P1094 ), Kerala: Trivandrum, Vellayani Kayal , 8.4350°N, 76.9914°E, 11 m, YPT, 20 .XI .2015; 5 females ( ICAR / NBAIR / P1095 , P1097 , P1098 , P1099 , P1100 ), Sikkim: Pakyong , 27.2314°N 88.5896°E, 1387 m, MT, 02 .XI .2014; 1 female ( ICAR / NBAIR / P1096 ), Sikkim: Rawtey Rumtek , 27.3090°N, 88.5762°E, 1086 m, SN, 31 .X .2014; 1 female ( ICAR / NBAIR / P1101 ), Sikkim: Ranka , 27.3438°N, 88.5874°E, 1307 m, SN, 01 .XI .2014; 1 male ( ICAR / NBAIR / P1102 ), Karnataka: Mandya , 12.5201°N, 76.8998°E, 675 m, SN, 16 .IX .2010; 1 male ( ICAR / NBAIR / P1103 ), same data as P1102, MT, 23 .VIII .2012; 2 males ( ICAR / NBAIR / P1104 , P1105 ), same data as P1095 .

Etymology

This species is named ‘ yoganarasimha ’ in honour of the Hindu god Narasimha whose temple is present in the type locality. The name is treated as a noun in apposition.

Diagnosis

This species looks similar to C. eila but differs from it in the following character states. Cremastobaeus yoganarasimha has a longer metasoma (when compared with the length of the head and mesosoma together), entirely smooth netrion and densely striated speculum. Cremastobaeus eila has a shorter metasoma (when compared with the length of the head and mesosoma together), the netrion is weakly striate dorsally, the speculum is not densely striated. Cremastobaeus yoganarasimha also looks similar to C. longigaster but differs from it in the following character states: C. yoganarasimha has an uneven vertically striate metascutellum whereas C. longigaster has a finely reticulate mesoscutellum and a smooth metascutellum which is anteriorly weakly punctate.

Figures

Figure 28. Bright field images of Cremastobaeus yoganarasimha sp. nov. (female) (a) Habitus (dorsal view); (b) antennae; (c) head and mesosoma; (d) metasoma; (e) frons; (f) pleuron; (g) wings; (h) meso- and metascutellum.

Figure 29. Bright field images of Cremastobaeus yoganarasimha sp. nov. (male) (a) Habitus (dorsal view); (b) antennae.