Chrysis improba Rosa, 2019

Rosa, P., 2019, New species of chrysididae (Hymenoptera) from Central Asia, Russia and Iran. Part 1., Far Eastern Entomologist 377, pp. 1-25 : 16-18

Chrysis improba Rosa , sp. n.

http/ urn:lsid:zoobank.org:pub:AC7F07E6-0470-473C-BA6E-F2A8B9FA180E

Figs 31–34 , 52

SPECIMENS EXAMINED. Holotype – ♂, Kazakhstan: Balamurun , Karatau,

24–26.V 1913, leg. V. Koshantshikoff [ZIN].

DIAGNOSIS. Chrysis improba sp. n. appears somewhat related to the C. macu-

licornis species group for both F1 and F2 shorter than F3, and malar spaces shorter than 1.5 MOD. Nevertheless, C. improba sp. n. shows some unique diagnostic features that may argue for its inclusion species in a new, self-standing group: TFC

strong, sharp, somewhat curved below, with three backwards pointing rami; verticaulus, after scrobal sulcus, distinctly carinate, sharp, seemingly a tooth, seen at oblique angle, head broad, distinctly triangularly shaped, with large POL (2.5 MOD),

basolateral swelling of T3 as in the C. inaequalis group. The above mentioned characters easily separate C. improba sp. n. from any other species.

DESCRIPTION. Body length 6.7 mm. Fore wing length 4.0 mm. Male. OOL =

1.5 MOD; POL = 2.5 MOD; MS = 1.0 MOD; relative length of P:F1:F2:F3 = 1.0:

0.5:0.5:1.5.

Head. In full face view, length 1.4 mm, width 2.0 mm. Apex of clypeus almost straight; TFC strong, prominent, laterally curved following eye margin, with three backwards pointing rami, one median and two lateral, almost enclosing midocellus; scapal basin medially polished, laterally densely, minutely punctured,

covered with dense, appressed, silvery setae; punctures among rami ill-defined and shallow; punctures on vertex and occiput small, reticulate. Malar space 1.0 MOD,

as long as F1+F2, convergent. Subantennal distance about 1.0 MOD. Subgenal carina complete, extending to mandible joint. Mandible with subapical tooth.

Mesosoma. Length 2.7 mm; width (PPW) 2.1 mm. Pronotum anteromedially slightly depressed, without anteromedian groove; punctation double, subreticulate,

with medium-sized punctures (about 0.3 MOD) and small punctures (0.1 MOD) on interstices. Mesoscutum with medium-sized punctures (0.3 MOD), with polished,

shining interstices, 1 PD apart, with sparse tiny, shallow dots; notauli and parapsidal lines complete; notauli with deep, round pits, decreasing from posterior to anterior margin. Mesoscutellum with punctation similar to posterior half of mesoscutum.

Metanotum with larger, deeper, subreticulate punctures of different size, with anteromedian fovea. Mesopleuron with ventrally shallow punctures; episternal sulcus habitus, lateral view; 33 – head, frontal view; 34 – metasoma, postero-lateral view. Scale bar

= 1.0 mm.

formed by deep, large, subrectangular foveae; verticaulus, after scrobal sulcus, seen at oblique angle in dorso-lateral view distinctly carinate, sharp. Propodeal teeth narrow, triangular, basally elongate, divergent and pointing backwards. Rs apically ending more than 1.0 MOD from anterior wing margin.

Metasoma. Length 2.7 mm. Double punctation on T1 with small and mediumsized, scattered punctures, about 1–3 PD apart, denser on margins, with tiny dots on interstices. T2 with double punctation, anterodorsally denser and posteriorly scattered with smaller punctures. T3 basolaterally with a convexity, somehow as in the C.

inaequalis group; pits of the pit row large (0.5 MOD), round and deep; lateral teeth triangular and pointed; median ones larger and apically blunt. Median longitudinal carina present on T2 and T3. Black spots on S2 small, round, connected to lateral margins and medially largely separated, more than 1 MOD.

Coloration. Body green; T2 basally with a blue stripe; posterior half of T3 deep blue. Mandibles brown, basally greenish and medially lighter. Scape and pedicel metallic green, flagellum black. Legs green, tarsi yellowish. Tegulae metallic green.

Wings transparent, with light brown to yellowish veins.

Vestiture. Body covered by sparse, short (1.0 MOD), semi-erect and whitish setae.

Note. The third segment is not completely visible, being partly retracted into the second one. Because of the rigidity of the unique known specimen, attempts to make the third segment visible appeared likely to result in irreparable damaging, and were therefore discarded.

Female. Unknown.

DISTRIBUTION. Kazakhstan.

ETYMOLOGY. The specific epithet improba (noun, feminine), from the Latin improbus (= disloyal), refers to the unclear systematic placement of this species.

Figures

Figs 31–34. Chrysis improba Rosa, sp. n., holotype ♂: 31 – habitus, dorsal view; 32 –

Figs 49–56. Genital capsule, dorsal view: 49 – Chrysis rubra Rosa, sp. n.; 50 – C. diadema Rosa, sp. n.; 51 – C. belokobylskiji Rosa, sp. n.; 52 – C. improba Rosa, sp. n.; 53 – C.