Macropygium graziae Silva & Campos, 2021

Silva, Layse Mitsue Harada Da & Campos, Luiz Alexandre, 2021, Revision of Macropygium Spinola, 1837 (Hemiptera: Pentatomidae: Ochlerini) with the revalidation of three species and the description of one new species, Zootaxa 4958 (1), pp. 605-627 : 622-626

publication ID

https://doi.org/ 10.11646/zootaxa.4958.1.36

publication LSID

lsid:zoobank.org:pub:1616997B-867D-45CD-8470-515C39815F89

DOI

https://doi.org/10.5281/zenodo.4716470

persistent identifier

https://treatment.plazi.org/id/A758DC56-56EF-40A0-BE6C-53F42AFE2F3D

taxon LSID

lsid:zoobank.org:act:A758DC56-56EF-40A0-BE6C-53F42AFE2F3D

treatment provided by

Plazi

scientific name

Macropygium graziae Silva & Campos
status

sp. nov.

Macropygium graziae Silva & Campos , sp. nov.

( Figs 2C–D View FIGURE 2 ; 4M–P View FIGURE 4 ; 5J–L, W–Y View FIGURE 5 ; 6D View FIGURE 6 ; 7D View FIGURE 7 ; 13 View FIGURE 13 ; Table 1 View TABLE 1 )

Holotype. Male. Labels: LA PAZ (Dep. San Javier) / Córdoba. / 1-20. I. 1929. C. Bruch ( MACN).

Paratypes. ARGENTINA, Buenos Aires, Buenos Aires, 1♀ [-34.599, -58.381] ( MACN) GoogleMaps ; Córdoba, La Paz, 2♀, 1928 ( MACN) ; Corrientes, Alvear, 1♀, 1991 ( DAR) ; Entre Rios, 4♀, 1996 ( JEE) ; 1♀, 1991 ( DAR) ; BRAZIL, Santa Catarina, Urussanga , 2010 ( UFRG) [-28.499, -49.292] GoogleMaps ; Rio Grande do Sul, Guaíba , 5♀, 1♂, 1974 [-30.113, -51.325] (1♀ MCNRS, 4♀, 1♂ UFRG); GoogleMaps Taim, 2♀, 1982 ( UFRG) 1♀, 1985 ( MCN) [-32.538, -52.540]; GoogleMaps Pelotas, 1♀, 2005 ( UFRG) [-31.624, -52.332] GoogleMaps .

Etymology: the species is named in honor to Jocelia Grazia, for her friendship, guidance, and contributions to the taxonomy of Neotropical pentatomids; noun in apposition.

Distribution: Brazil, Argentina ( Fig. 13 View FIGURE 13 ).

Diagnosis. Antennae four-segmented, length of the second antennomere equals the third and fourth antennomeres combined; lateral projection of dorsal rim of pygophore broad and apart from the posterolateral angle; middle portion of posterior margin of valvifers VIII projected over laterotergites IX, lateral angles not projected.

Male. Genitalia: conical projection of ventral rim of pygophore bifurcate at apex; posterolateral angles acute, medial projection of posterolateral angles broadly rounded and tumescent, almost attaining the dorsal limit of segment X in lateral view; lateral projection of dorsal rim large, subtriangular, apart from the posterolateral angle, and partially covering the medial projection in lateral view; segment X higher than wide in posterior view, and longer than wide in ventral view ( Fig. 4M–P View FIGURE 4 ); parameres short, apical projection broad with a second apical process ( Fig. 5J–L View FIGURE 5 ), largest axis of head less than half the length of stem; vesica without lateral projections; ductus seminis distalis thin, helicoidal in the middle portion ( Fig. 5W–Y View FIGURE 5 ).

Female. Genitalia: Valvifers VIII partially covering the basal portion of laterotergites IX; middle portion of posterior margin of valvifers VIII projected over laterotergites IX, lateral angles not projected; laterotergites IX with mild lateral depression ( Fig. 6D View FIGURE 6 ). Folds of valvulae IX occupying almost half the valvulae surface, with few villi, conical microsculptures barely visible; ring sclerites diameter equals the width of vaginal intima, weakly sclerotized and connected to the thickening of vagina intima, this weakly sclerotized; orificium receptaculi about 2/3 the width of vaginal intima ( Fig. 7D View FIGURE 7 ).

Comments. Macropygium graziae occurs in southern Brazil and northern Argentina ( Fig. 13 View FIGURE 13 ), partially overlapping with M. reticulare and M. spinolae . Macropygium graziae can be distinguished from all Macropygium species by the four-segmented antennae; by the lateral projections of the dorsal rim of pygophore broad and placed apart from the posterolateral angles of the pygophore ( Fig. 4O View FIGURE 4 ); and by the middle portion of the posterior margin of valvifers VIII projected over laterotergites IX ( Fig. 6D View FIGURE 6 ).

MACN

Museo Argentino de Ciencias Naturales Bernardino Rivadavia

DAR

Plant Pathology Herbarium

UFRG

Instituto de Biologia

MCN

McNeese State University

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Hemiptera

Family

Pentatomidae

Genus

Macropygium

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