Dohrnemesa carvalhoi Wygodzinsky, 1966,

Gil-Santana, Hélcio R. & Ferreira, Rodrigo Lopes, 2016, A new species of Dohrnemesa from Brazil, with notes on the male of D. carvalhoi and on D. albuquerquei (Hemiptera: Heteroptera: Reduviidae: Emesinae), Zootaxa 4173 (6), pp. 583-595: 585-588

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Dohrnemesa carvalhoi Wygodzinsky, 1966


Dohrnemesa carvalhoi Wygodzinsky, 1966 

( Figs. 3–12View FIGURES 1 – 4. 1 – 2View FIGURES 5 – 12)

Dohrnemesa carvalhoi Wygodzinsky, 1966: 231  (key), 235, 237 (description); Maldonado 1990: 83 (catalog).

Dohrnemesa carvalhoi  was known until now only through its female holotype ( Fig. 3View FIGURES 1 – 4. 1 – 2), which was collected on a hill (Corcovado) in the city of Rio de Janeiro, state of Rio de Janeiro, Brazil  . A male of this species, attracted to light at night, collected in Nova Friburgo, another city in the mountains of the state of Rio de Janeiro, was studied here ( Figs. 4–12View FIGURES 1 – 4. 1 – 2View FIGURES 5 – 12). 

Remarks. Male. Selected measurements (mm): total length to tip of abdomen 9.3; to tip of forewings 10.7; length of head 1.0; pronotum: length of fore lobe 1.1; length of hind lobe 1.2; length of forewing 7.5. Fore tibiae ( Fig. 5View FIGURES 5 – 12) somewhat curved, without dorsal depression, with some longer, straight, obliquely inclined, pale setae on distal half dorsally, and a cluster of stiff, somewhat curved, golden setae on apical extremity ventrally.

The male examined is very similar to the female holotype. The following differences are recorded: eyes are somewhat larger; a darkened subapical area is present on forewing ( Fig. 4View FIGURES 1 – 4. 1 – 2), which is whitish in female ( Fig. 3View FIGURES 1 – 4. 1 – 2); abdomen is less wide at median portion; connexival lateral expansion of the fifth segment is somewhat smaller.

Last tergite prolonged posteriorly, with a rounded posterior margin, covering pygophore, leaving only tips of parameres exposed in dorsal view ( Fig. 6View FIGURES 5 – 12). Eight sternite with numerous short and several long setae on its exposed portion, covering approximately two thirds of the pygophore ventrally; anterior margin medially rounded towards distal portion; posterior margin sinuous, curved at midportion.

Male genitalia ( Figs. 7–12View FIGURES 5 – 12): pygophore subrectangular in dorsal and ventral views ( Fig. 7View FIGURES 5 – 12), with numerous short and moderate long, and several long setae on distal third (i.e. on naturally exposed surfaces); anterior dorsal sclerotization narrow; basal margin slightly curved backwards on midportion ventrally; posterior process triangular; apex subacute ( Figs. 7–8View FIGURES 5 – 12). Parameres symmetrical, distal half very curved, with several moderately long setae; apex subrounded ( Fig. 9View FIGURES 5 – 12). Phallus symmetrical. Basal arms of articulatory apparatus short ( Fig. 12View FIGURES 5 – 12); basal plate extension elongated ( Fig. 12View FIGURES 5 – 12), struts long, elongated, almost entirely fused, divided at extreme base and apex, at the latter much more broadly, with apical margins rounded ( Fig. 11View FIGURES 5 – 12). A pair of elongated somewhat narrow ventral sclerotizations on phallosoma (= ventral sclerotization of phallobase sensu Wygodzinsky 1966), followed by a pair of apparently articulated short extensions apically ( Fig. 12View FIGURES 5 – 12); between the sclerotizations on the phallosoma and the struts, a pair of elongated, thin, double curved and somewhat sclerotized processes, which are divergent in distal half; apex acute ( Fig. 12View FIGURES 5 – 12). These processes lie on a somewhat denser layer of tissue. Endosoma wall smooth ( Fig. 10View FIGURES 5 – 12).

Specimens examined. BRAZIL, Rio de Janeiro, FEMALE HOLOTYPE  : Rio de Janeiro, Corcovado [Hill], 1959, J.C.M. Carvalho leg. ( MNRJ)  ; 1 male, Nova Friburgo (22º17'S 42º29'W, ca. 1049 m a.s.l.), 28.xi.2004, attracted to light, H. Gil-Santana leg. ( MNRJ)GoogleMaps  .

Comments. Only minor  differences were found between the examined male and female; it is unclear whether these are due to sexual dimorphism or individual variation, and it could be decided only when more specimens of both sexes will be available in the future. The male genitalia are generally similar to those of other species of Dohrnemesa in which they were previously documented ( Wygodzinsky 1966); the struts, however, have been recorded as short in other species of the genus, whilst they are elongated in D. carvalhoi  ( Fig. 11View FIGURES 5 – 12).


Museu Nacional/Universidade Federal de Rio de Janeiro














Dohrnemesa carvalhoi Wygodzinsky, 1966

Gil-Santana, Hélcio R. & Ferreira, Rodrigo Lopes 2016

Dohrnemesa carvalhoi

Maldonado 1990: 83
Wygodzinsky 1966: 231