Hedychridium periotoi, Lucena, 2018

Lucena, Daercio, 2018, The uncommon genus Hedychridium (Hymenoptera: Chrysididae) in South America: new species and first record for Brazil, Journal of Natural History 52 (5 - 6), pp. 351-359 : 353-356

publication ID

https://doi.org/ 10.1080/00222933.2018.1432775

publication LSID

lsid:zoobank.org:pub:C0D66A84-3168-478D-9AC5-5EC3B4EB32FC

DOI

https://doi.org/10.5281/zenodo.5189364

persistent identifier

https://treatment.plazi.org/id/03AE87A6-FF96-3849-FE13-FC2B232816BC

treatment provided by

Felipe

scientific name

Hedychridium periotoi
status

sp. nov.

Hedychridium periotoi sp. nov.

( Figures 1 View Figure 1 , 2 View Figure 2 )

Diagnosis

The new species can be readily distinguished by distinctive traits that are absent in H. argentinum such as: second tarsomere of metaleg with double line of spines; metabasitarsus with apical crown of spines; mesoscutal integument rugulose to striate anterolaterally; fore wing entirely setose; apical margin of T3 with narrow translucent edge; compound eyes with sparse short microtrichia.

Description

Holotype female ( Figure 1 View Figure 1 (a–d)). Body size: 3.6 mm ( Figure 1 View Figure 1 (a)). Coloration: body predominantly light green with purplish blue bands on dorsum; head green with purplish blue stain among ocelli ( Figure 1 View Figure 1 (b)); scape greenish; pedicel brownish; flagellomeres brown; mandible brown; mesosoma primarily light green, with bluish tint on pronotum; golden highlights on dorsum of pronotum and metasoma; mesoscutellum, metanotum and propodeum with dark band covering much of disc; dark band covering the mesoscutum ( Figure 1 View Figure 1 (b)); tegula brown; coxae and femora green; trochanters light brown; tibiae green; tarsi light brown; sterna brown; T1 light green with golden highlights; T2 light green marginally, with dark blue band occupying much of disc ( Figure 1 View Figure 1 (d)); T3 light green with reddish shine. Head: scapal basin densely marked by crossridging ( Figure 1 View Figure 1 (c)), without setae; compound eye with microtrichia among ommatidia (as in Figure 1 View Figure 1 (e)); malar space short, less than 0.2 × MOD; subantennal space 0.6 × MOD; clypeal margin straight; mandible with sub-medial tooth (as in Figure 1 View Figure 1 (e)); F1 1.3 × longer than F2; genal margin without definite carina, with somewhat irregular ridge. Legs: tarsal claw with single perpendicular submedial tooth; metabasitarsus with crown of spines apically; second tarsomere of metaleg with double line of spines on ventral surface; metafemur enlarged. Wings: fore wing entirely setose (as in Figure 2 View Figure 2 (h)); M gently curved, almost straight, arising slightly after 1cu-a; Rs short, evenly curved, tubular proximally, fading distally; A1 tubular at cu-a intersection, fading gradually. Pronotum: clearly narrower than head; medial notch slightly marked; anterolateral margin discretely carinate; lateral depression roughly sculptured. Mesoscutum: integument somewhat rugulose, striate anterolaterally; notauli deeply impressed; parapsidal lines discrete, surrounded by punctures. Mesopleuron: round, gently deflected posteriorly, with discrete scratch marks, scrobe deeply marked. Mesoscutellum: one-third as long as mesoscutum. Metanotum: posterior margin convex, as long as mesoscutellum. Propodeum: dorsal surface macro-foveolate, V-shaped; lateral process with some striate marks both dorsolaterally and lateroventrally; lateral process pointed apically. Metasoma: T3 with narrow apical translucent edge; margins smooth, round, without notch or corners; S1 polished; S2–S3 with silvery semi-decumbent setae. Punctation: head regularly punctate, changing abruptly in the scapal basin, which is densely striated (as in Figure 1 View Figure 1 (e)); mesosoma mostly foveate, with some rugulose and striate areas marginally; metasoma with integument predominantly puncticulate, with discrete striate marks laterally on T2 and entirely on T3; T1–T2 finely punctate, distinctly shallower than the rest of body, with broad shiny interspaces among well-separated punctures.

Male ( Figure 2 View Figure 2 (a–h)). Similar to female, except: distinct bronze shine on frons ( Figure 2 View Figure 2 (c)), pronotum, mesoscutum and T1–T2 ( Figure 2 View Figure 2 (a)); mesosoma primarily green blue, with bluish highlights on pronotum, mesoscutellum, metanotum and propodeum; large dark blue band covering the mesoscutum ( Figure 2 View Figure 2 (b)); tibiae brownish green; T1 light green marginally, with dark blue band on disc; T2 light green marginally, with large dark blue band occupying much of disc ( Figure 2 View Figure 2 (d)); T3 light green with bluish tint on disc; metafemur not so enlarged as in females; genital capsule ( Figure 2 View Figure 2 (e–g)), gonocoxal lobes widely fused dorsally, lobes as long as aedeagus; cuspis with long apical setae.

Material examined

Holotype ♀, BRAZIL, São Paulo, Itirapina, Est. Ecol. Itirapina, 26–28 November 2016, Almeida, Porto , Lucena , Gibran and Yoshida ( RPSP) . Paratypes: 16♀ 3♂. 2♀ same data as holotype ( RPSP) . BRAZIL, São Paulo, Luiz Antônio, Est . Ecol. de Jataí, 29 November 2016, Almeida, Porto, Lucena, Gibran and Yoshida , 1♀ ( RPSP); same data except 28–29 October 2016, Tavares, Porto, Lucena, Gibran and Yoshida, 1♀ ( RPSP) . São Paulo, São Carlos, 6 September 1991, MT Tavares , 1♂ ( UFES) . São Paulo, Luiz Antônio, Estação Ecológica de Jataí, Cerrado / Malaise trap 1, 11 October 2007, NW Perioto, 1♀ ( LRRP); same data except, 5 December 2007, 1♀ ( LRRP), 29 October 2008, 1♀ ( MZUSP), 10 December 2008, 1♀ ( MZUSP); same data except, Mata ciliar/ Malaise trap 2, 11 October 2007, NW Perioto, 3♀ ( MZUSP), 5 December 2007, 1♀ ( MZUSP), 7 November 2007, 1♀ ( RPSP), 12 November 2008, 1♀ ( RPSP) . São Paulo, Luiz Antônio, Est . Ecol. de Jataí, 16 October 1999, GAR Melo, 2♀ 2♂ ( DZUP) .

Variation

The microtrichia on eyes of females are shorter and sparser than in males. In some females, the microtrichia are particularly difficult to see (magnification above 100 ×). General body size = 3.4–3.9 mm.

Etymology

The species is named after the Brazilian entomologist Professor Nelson W. Perioto.

Biology

Some specimens were collected near aggregations of Oxybelus (Crabronidae) , but no incursions into the nests were observed (personal observation).

RPSP

Universidade de Sao Paulo

UFES

Universidade Federal do Espirito Santo

MZUSP

Museu de Zoologia da Universidade de Sao Paulo

DZUP

Universidade Federal do Parana, Colecao de Entomologia Pe. Jesus Santiago Moure

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Hymenoptera

Family

Chrysididae

Genus

Hedychridium

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