Chalarus connexus Rafael, 1988

Ramos-Pastrana, Yardany, Marques, Dayse Willkenia A. & Rafael, José Albertino, 2023, Chalarus (Diptera: Pipunculidae) of Colombia, with description of two new species and an updated key to males of the Neotropical species, Acta Entomologica Musei Nationalis Pragae 63 (2), pp. 383-395 : 388-389

publication ID

https://doi.org/ 10.37520/aemnp.2023.024

publication LSID

lsid:zoobank.org:pub:B94E1D89-5827-404D-821F-2DA8339FFB58

persistent identifier

https://treatment.plazi.org/id/C00B8781-CC04-F150-5A81-5C2F25C6139F

treatment provided by

Felipe

scientific name

Chalarus connexus Rafael, 1988
status

 

Chalarus connexus Rafael, 1988 View in CoL

( Figs 33–43 View Figs 33–43 , 55 View Fig )

Chalarus connexus Rafael, 1988: 6 View in CoL , Figs 1–13, 20–21 View Figs 1–11 View Figs 12–22 .

Chalarus connexus View in CoL : RAFAEL (1990: 48); JERVIS (1992: 346); DE MEYER (1996:15); KEHLMAIER &ASSMANN (2010:12); RODRÍGUEZ & RAFAEL (2012: 17, 28, 43).

Material examined (1 J). COLOMBIA, Caquetá, San Vicente del

Caguán, / Vda.[Vereda] Alto Quebradón, Fca.[Finca] Rancho Veracruz,

/ Bosque piso, 02º17’55.8’’N / 74º44’29.3’’W, / 414 m [eters], 1–15.

Feb[ II].2017, / trampa Malaise en el piso del bosque, / Y.Ramos-Pastrana

( LEUA –00000049808) (photographed specimen).

Diagnosis. Cell r 1 closed to the confluence of the veins R 1 and R 2+3. Both surstyli with one lobe apically, inward directed, inner margins curved and outer margins nearly straight; both surstyli without sinus at junction with epandrium; left surstylus with lower margin rounded; right surstylus with upper margin nearly straight; both surstyli with apex upwards directed, without sinus in union with epandrium in lateral view. Gonopods thickened, with apices acute; right gonopod slightly more acute than left one. Tip of distiphallus straight and acute, without phallic processes. Phallus trifid, all ejaculatory ducts situated little before apex; lateral ejaculatory ducts with inner margins forming straight line in dorsal view.

Intraspecific variability. RAFAEL (1988) provided a complete description and illustration of the Brazilian holotype; however, we found intraspecific variation, therefore, we provide a comparison of the Colombian and Brazilian specimens (between parenthesis, when comparable).

Male. Head ( Figs 33–34 View Figs 33–43 ). Occiput dark brown, brown pruinose. Antenna brown ( Fig. 35 View Figs 33–43 ) (versus antenna black in the holotype). Thorax ( Figs 34–36 View Figs 33–43 ). Postpronotal lobe light brown, light brown pruinose. Notopleuron concolorous with scutum. Mesopleuron brown, brown pruinose. Mediotergite brown pruinose. Wing ( Fig. 37 View Figs 33–43 ). Length 2.2 mm (versus 1.8 mm), width 0.7 mm (versus 0.6 mm), membrane slightly infuscate, pterostigma occupying 2/3 of third costal section (versus pterostigma occupying a little more than half of third costal section). Halter brown (versus halter dark brown). Abdomen ( Figs 34–38 View Figs 33–43 ). Tergite 1 light brown basally, dark brown posterolaterally; syntergosternite 8 dark brown, gray-brown pruinose, with long apical setae. Terminalia ( Figs 39–43 View Figs 33–43 ). Epandrium and surstyli brown ( Fig. 39 View Figs 33–43 ). Surstyli ( Figs 39–41 View Figs 33–43 ) subsymmetrical, completely setose, with long setae apically; both surstyli with one lobe apically, directed inward, inner margin curved and outer margin nearly straight and lower margin slightly truncated ( Fig. 39 View Figs 33–43 ); left surstylus with lower margin rounded, right surstylus with upper margin nearly straight, both surstyli with apex upwards directed, without sinus in union with epandrium in lateral view ( Figs 40–41 View Figs 33–43 ). Gonopods subsymmetrical, thickened, with apices acute, right slightly more acute than left one ( Figs 40–41 View Figs 33–43 ). Tip of distiphallus straight and acute, without phallic processes ( Fig. 42A View Figs 33–43 ). Ejaculatory apodeme parasol-shaped ( Fig. 43 View Figs 33–43 ). Phallus trifid, all ejaculatory ducts situated little before apex in dorsal and lateral view ( Figs 42A–B View Figs 33–43 ).

Habitat. The specimen was collected in preserved areas of tropical rainforest in the Colombian Amazon, Department of Caquetá.

Geographical distribution. Brazil (Amazonas) ( RAFAEL 1990), Colombia (Caquetá) (new record) ( Fig. 55 View Fig ).

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Diptera

Family

Pipunculidae

Genus

Chalarus

Loc

Chalarus connexus Rafael, 1988

Ramos-Pastrana, Yardany, Marques, Dayse Willkenia A. & Rafael, José Albertino 2023
2023
Loc

Chalarus connexus

KEHLMAIER C. & ASSMANN T. 2010: 12
DE MEYER M. 1996: 15
JERVIS M. A. 1992: 346
RAFAEL J. A. 1990: 48
1990
Loc

Chalarus connexus

RAFAEL J. A. 1988: 6
1988
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