Cremastobaeus boolei 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 : 1994-1997

Cremastobaeus boolei Veenakumari sp. nov.

( Figure 1 (a–h))

www.zoobank.org/ urn:lsid:zoobank.org:act:FB402DE2-65B4-403C-B867-0170B71F553C

Holotype: Female. Body length = 1.36 mm; (m = 1.40 (1.35–1.52) mm, SD = 0.05, n = 8)

Colour ( Figure 1 (a))

Head, mesosoma black; metasoma maroon black; A1–A4 yellow-brown, A2–A4 with red tinge; A5–A8 yellow with uneven black patches, clava black-brown; eyes silvery;

mandibles red-brown; legs pale yellow; posterior margin of mesoscutellum and lateral propodeal areas light brown.

Head ( Figure 1 (b,e,h))

FCI = 1.35; LCI = 1.08; IOS 0.43× width of head; POL>LOL in ratio of 11.7:6.4; lateral ocellus contiguous with inner orbit; eye large (L:W = 17.9:16.0), with dense white setae; frontal depression finely and densely transversely striate, which continues even on the walls of the depression without any smooth surface; frons above frontal depression finely striate; vertex and gena coriaceous reticulate; length and width of antennomeres A1–A 8 in ratio of 12.1:4.3, 6.7:4.0, 5.8:3.1, 3.6:2.6, 2.6:2.7, 2.2:3.4, 2.2:3.5, respectively; length and width of clava 12.4:6.0; A2–A8 with sparse, long setae; radicle 0.19× as long as A1.

Mesosoma ( Figure 1 (d–g))

Mesoscutum (L: W = 20.4:24.4) coriaceous reticulate, with long setae; upper lateral pronotal area coriaceous reticulate, with few striae on anterior margin, remainder predominantly smooth; netrion weakly striate; speculum with several transverse striae; mesepimeral sulcus foveate; mesopleural depression almost smooth; ventral mesopleuron reticulate; metapleuron above transverse metapleural sulcus smooth; dorsal one-quarter of metapleuron beneath transverse sulcus smooth remainder finely striate; paracoxal sulcus foveate; mesoscutellum (L:W = 8.9:15.4) trapezoid, coriaceous reticulate, with long setae; posterior mesoscutellar sulcus foveate with a smooth posterior margin; metascutellum (L:W = 3.0:7.1) trapezoid, anteriorly foveate, remainder with uneven sculpture; metanotal trough foveate with a projection towards metascutellum; lateral propodeal area unevenly sculptured; fore wing (L:W = 80.1:28.5) and hind wing (L: W = 61.0:10.4) hyaline with dense microtrichia; length of marginal cilia of fore wing and hind wing 0.10× and 0.44× width of their wings, respectively; length of submarginalis: marginalis: stigmalis: postmarginalis in ratio of 32.8:3.0:6.9:22.6, respectively.

Metasoma ( Figure 1 (c))

(L:W = 61.5:26.9); T1 with basal foveae, entirely costate, with narrow smooth posterior margin; T2 with basal foveae followed by costae the entire length except for a narrow smooth posterior margin; T3 with a smooth anterior margin, followed by costae extending the entire length of tergite except for smooth posterior margin; anteromedial margin of T3 with reticulations in between costae; T4 same as T3; T5 same as T3 but for the absence of smooth anterior and posterior margins; remaining tergites weakly reticulate; length and width of tergites T1–T 7 in ratio of 13.2:13.4, 10.3:21.5, 12.4:26.9, 10.6:25.9, 7.6:19.5, 4.3:12.4, 3.5:5.1, respectively; T1 longest of all tergites followed by T3.

Variation

In some specimens the posterior tergites are black.

Male

Unknown.

Material examined

Holotype: Female, ( ICAR / NBAIR / P1032 ), INDIA: Uttar Pradesh: Jalaun , 26.1270°N, 79.4703° E, 136 m, SN, 02.VIII.2010, FRK . Paratypes: 1 female, ( ICAR / NBAIR / P1033 ), Uttar Pradesh: Mainpuri , 27.2284°N, 79.0249°E, 160 m, SN, 05 .IX .2007, FRK; 1 female ( ICAR / NBAIR / P1034 ), Himachal Pradesh: Una, Dehlan , 31.4251°N, 76.3354°E, 398 m, SN, 04 .VII .2006, FRK; 1 female ( ICAR / NBAIR / P1035 ), Uttar Pradesh: Aligarh, Jawan , 27.9883°N, 78.1012°E, 189 m, SN, 06 .XI .2009, FRK; 1 female ( ICAR / NBAIR / P1036 ), Punjab: Pathankot, Sujanpur , 32.3126°N, 75.6014°E, 329 m, SN, 10 .VII .2006, FRK; 1 female ( ICAR / NBAIR / P1037 ), Himachal Pradesh: Mandi, Chandial , 31.6363°N, 76.9542°E, 774 m, SN, 26 . VI .2006, FRK; 1 female ( ICAR / NBAIR / P1038 ), Karnataka: Bengaluru, Hesaraghatta , 13.1394°N, 77.4854°E, 859 m, SN, 18 .III .2014, KV; 1 female ( ICAR / NBAIR / P1246 ), Karnataka: Bengaluru, Attur , 13.0968°N, 77.5641°E, 936 m, YPT, 15 .I .2014, KV; 1 female ( ICAR / NBAIR / P1268 ), Kerala: Thrissur, Chowannur, Parampadam , 10.6506°N, 76.0783°E, 42 m, SN, 10 .I .2012, FRK; 1 female ( ICAR / NBAIR / P1271 ), Karnataka: Bengaluru, Attur , 13.0968°N 77.5641°E, 936 m, YPT, 15 .I .2014, KV.

Etymology

This species is named ‘ boolei ’ after George Boole the self-taught English mathematician. The name is treated as a noun in the genitive sense.

Diagnosis

This species is distinct from all other species of Cremastobaeus due to the presence of a fully transversely striate frontal depression without any smooth walls.

Figures

Figure 1. Bright field images of Cremastobaeus boolei sp. nov. (female) (a) Habitus (dorsal view); (b) frons; (c) metasoma; (d) meso- and metascutellum; (e) head and mesosoma; (f) pleuron; (g) wings; (h) antenna.