Cremastobaeus variegatus 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 : 2042-2044

Cremastobaeus variegatus Veenakumari sp. nov.

( Figure 25 (a–g))

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Holotype: Female. Body length = 1.38 mm; (m = 1.36 (1.29–1.42) mm, SD = 0.04, n = 14)

Colour ( Figure 25 (a))

Head and mesosoma black; metasoma in shades of brown, T1 and anterior T3 lighter than other tergites; A1 black-brown, A2–A4 brown with patches of red, A5–A7 yellowbrown, A8 and clava dark brown; mandibles red-brown; legs yellow-brown with last tarsomere black.

Head ( Figure 25 (c,e,g))

FCI = 1.37; LCI = 1.05; IOS 0.48× width of head; POL>LOL>OOL in ratio of 12.3:6.8:0.7; eye large (L:W = 16.5:15.9), with dense white setae; frontal depression with long fine transverse striae and a few oblique striae above torular triangle; vertex coriaceous reticulate, setose; gena transversely reticulate; length and width of antennomeres A1– A 8 in ratio of 14.6:3.0, 6.2:4.4, 6.3:3.7, 3.3:3.0, 3.4:2.6, 2.6:2.8, 2.3:3.4, respectively; length and width of clava 14.0:6.2; radicle 0.13× as long as A1.

Mesosoma ( Figure 25 (b,c,f))

Mesoscutum (L:W = 21.6:25.3) coriaceous reticulate, setose; dorsal lateral pronotal area coriaceous reticulate, medially smooth, antero-ventrally weakly reticulate; netrion smooth with two striae ventrally; speculum with transverse striae; mesepimeral sulcus foveate; mesopleural depression smooth; ventral mesopleuron finely reticulate; metapleuron weakly and sparsely striate beneath transverse metapleural sulcus; mesoscutellum (L:W = 7.7:16.5) trapezoid, coriaceous reticulate, setose; posterior mesoscutellar sulcus foveate; metascutellum trapezoid (L:W = 2.7:9.4), with uneven sculpture; metanotal trough foveate; lateral propodeal area predominantly smooth with sparse punctae; fore wing (L:W = 83.4:30.2) and hind wing (L:W = 67.8:10.4) hyaline with dense microtrichia; length of marginal cilia of fore wing and hind wing 0.1× and 0.41× width of their wings, respectively; length of submarginalis: marginalis: stigmalis: postmarginalis in ratio of 30.9:5.0:6.7:23.6, respectively.

Metasoma ( Figure 25 (d))

(L:W = 66.6:30.6); T1 entirely costate with a smooth band posteriorly; T2 with basal foveae beneath which costae extend entire length of tergite; space between costae weakly punctate;

posterior margin smooth; T3 with a smooth band on anterior margin followed by costae, postero-sublaterally coriaceous reticulate; space between costae on T3 anteriorly smooth; posterior margin of T3 and anterior margin of T4 smooth; beneath the smooth band of T4 a row of reticulations present followed by weak costae and reticulations; T5–T7 coriaceous reticulate; length and width of tergites T1–T 7 in ratio of 12.6:14.6, 12.6:23.8, 13.1:30.0, 11.8:29.9, 9.0:23.4, 4.4:14.7, 3.0:6.0, respectively; T3 longest of all tergites; T1 and T2 subequal.

Variation

T3 varies from light brown to orange-yellow.

Male

Unknown.

Material examined

Holotype: Female ( ICAR / NBAIR / P1109 ), INDIA: Uttar Pradesh: Hathras, Sasni , 27.7063°N, 78.0823°E, 185 m, SN, 05.III.2013, FRK ; Paratypes: 1 female ( ICAR / NBAIR / P1110 ), Karnataka: Mysore, Chamarajanagar , 12.0526°N, 77.2864°E, 708 m, SN, 14 .X .2010, KV; 1 female ( ICAR / NBAIR / P1111 ), Karnataka: Bengaluru, Hesaraghatta , 13.1394°N, 77.4854°E, 859 m, SN, 27 . VII .2010, KV; 1 female ( ICAR / NBAIR / P1112 ), Karnataka: Tumkur, Hirehalli , 13.2718°N, 77.1801° E, 846 m, SN, 14 .XII .2010, KV; 1 female ( ICAR / NBAIR / P1113 ), Karnataka: Bengaluru, Attur , 13.0968 N, 77.5641 E, 936 m, YPT, 13 .II .2014, KV; 1 female ( ICAR / NBAIR / P1114 ), Karnataka: Chikkaballapur, Nandi Hills , 13.3702°N, 77.6834°E, 1448 m, SN, 21 .X .2010, KV; 1 female ( ICAR / NBAIR / P1175 ), Karnataka: Mandya, Maddur , 12.5841°N, 77.0434°E, 646 m, SN, 05 .XI .2009, KV; 1 female ( ICAR / NBAIR / P1183 ), Tamil Nadu: Udagamandalam, Wellington , 11.3587°N, 76.7793°E, 1871 m, YPT, 18 .II .2016, PM; 1 female ( ICAR / NBAIR / P1238 ), Karnataka: Bengaluru , Hebbal, Indian Veterinary Research Institute ( IVRI), 13.0247°N, 77.5834°E, 932 m, YPT, 24 . V .2016, KV; 2 females ( ICAR / NBAIR / P1239 , P1240 ), Karnataka: Bengaluru, Hesaraghatta , 13.1394°N, 77.4854° E, 859 m, SN, 27 .VII .2010, KV; 1 female ( ICAR / NBAIR / P1241 ), Tamil Nadu: Yercaud, Horticulture Research Station , 12.33222°N, 78.35444°E, 1399 m, YPT, 04 .VIII .2016, PM; 1 female ( ICAR / NBAIR / P1242 ), Tamil Nadu: Dharmapuri, Hosur, Uddanapalli , 12.6020°N, 77.9469°E, 758 m, SN, 28 .X .2015, PM; 1 female ( ICAR / NBAIR / P1243 ), Uttarakhand, Udhamsingh Nagar, Fatehpur , 29.1244°N, 79.2042°E, 226 m, SN, 22 .X .2009, FRK.

Etymology

This species is named ‘ variegatus ’ meaning ‘mixed colours’ in Latin referring to the variegated metasoma. The name is treated as an adjective.

Diagnosis

This species is closer to C. parallelogaster . These two species can be differentiated with the following character states. In C. variegatus the metasoma is widest at the anterior margin of T3 and the space between costae on T2 is punctate whereas in C. parallelogaster T2–T4 are almost equally wide and the space between costae on T2 is reticulate-striate.

Figures

Figure 25. Bright field images of Cremastobaeus variegatus sp. nov. (female) (a) Habitus (dorsal view); (b) meso- and metascutellum; (c) head and mesosoma; (d) metasoma; (e) antenna; (f) pleuron; (g) frons.