Physoderes impexa (Distant 1903)

Cao, Liangming, Tomokuni, Masaaki & Cai, Wanzhi, 2011, Taxonomic notes on Physoderinae (Heteroptera: Reduviidae) from China, Zootaxa 2888, pp. 23-30 : 27-30

Physoderes impexa (Distant 1903)

( Figs. 13–24 )

Epirodera impexa Distant 1903: 56 ; Distant 1904: 247.

Physoderes fuscus Breddin 1903: 126 ; synonymized by Distant 1904: 247. Physoderes impexa Izzard 1936: 583 ; Maldonado-Capriles 1990: 380.

Redescription. Color. Body brown to blackish brown; eyes black; ocelli silvery white with margins reddish; antennae (except fourth segments), anterior margin of each corium, outer margin of membrane, apical part of vein of outer cell on membrane, posterior half of each connexival segment, basal and subapical annulations on femora, tibiae, and apex of scutellum dull yellow; fourth segments of antennae yellow; coria, membranes, anterior half of each connexival segment, and apical part of each femur dark brown.

Structure. Head, pronotum, lateral margins of scutellum, coria, outer margins of connexiva, abdomen beneath, and legs clothed with club-shaped erect setae; antennae with slender club-shaped setae, and with dense short setae on fourth segment.

Head ( Figs. 13 , 14 ) cylindrical; clypeus developed; anteocular portion slender and protruding between first antennal segments; transverse constriction behind eyes shallow; postocular portion globose. Eyes ( Figs. 13 , 14 ) medium-sized, more adjacent to ventral surface of head than to dorsal surface in lateral view. Ocelli ( Fig. 13 ) large. Antennae ( Fig. 13 ) with first segment slightly curved, surpassing apex of head; second to fourth segments clubshaped, almost straight; third segment shortest and thinnest. First visible labial segment ( Fig. 14 ) thick, about 1/3 of second one, not reaching to level of antennifer; second segment slender and nearly straight, reaching to prosternum, with basal portion slightly thick; third segment short.

Collar ( Figs. 13 , 14 ) undeveloped and processes prominent bilaterally. Pronotum ( Figs. 13 , 14 ) rough and uneven; anterior lobe slightly longer and narrower than posterior, with a deep hollow centrally, and with sculptures covered with erect setae; posterior lobe anteriorly with two ridges; humeral angles rounded and swollen; posterior angles semicircular, prominent backward; posterior margin before scutellum nearly straight. Scutellum ( Fig. 13 ) ridged along lateral margins, concave mediobasally, ligulate in apical portion. Hemelytra ( Fig. 13 ) not reaching to tip of abdomen. Fore and mid femora ( Figs. 13 , 16 ) each with two rows of spines ventrally; fore tibia ( Fig. 13 ) each with a distinct tibial spur subapically.

Pygophore ( Figs. 15, 20, 21 ) nearly straight along posterior margin; pygophore process hemi-annular, middle thick ( Fig. 20 ). Paramere ( Figs. 17–19 ) flattened, elongate-triangular, curved at median portion, swollen in apical half, nearly straight along anterior margin, with outer side concave centrally. Phallus as shown in Figs. 22–24 ; basal plate slender and long, swollen at apex; basal plate bridge ( Fig. 24 ) thin and nearly straight; pedicel short and broad; phallosoma oblong, anchor-shaped and swollen apically; dorsal phallothecal sclerite with two sclerotized irregularly symmetrical sclerites subapically; ventral phallothecal sclerite strongly sclerotized; struts fused each other, nearly reaching to apical part of phallosoma; endosoma simple.

Measurements. [3 (n=1)]. Body length 10.8; maximum width of abdomen 4.1; head length 2.3; length of anteocular portion 1.2; length of postocular portion 0.7; synthlipsis 0.7; interocellar space 0.25; lengths of antennal segments I-IV=0.8, 1.0, 0.7, 0.7; lengths of visible labial segments I-III=0.6, 1.85, 0.4; length of anterior pronotal lobe 1.2; length of posterior pronotal lobe 1.5; maximum width of thorax 3.3; length of scutellum 1.2; length of hemelytron 6.4.

Material examined. 13, China, Yunnan, Province, Jingping, 16.XII.2003, 1960 m, alt, Liang Hongbing leg (Zoological Institute, CAS).

Distribution. China (Yunnan); India; Myanmar.

Figures

FIGURE 13. Physoderes impexa (Distant), 3. Habitus. Scale bar = 1.43 mm.

FIGURES 14 – 24. Physoderes impexa (Distant), 3. 14, Head and pronotum, antennae removed; 15, apical portion of abdomen; 16, right fore leg; 17 – 19, paramere; 20, 21, pygophore; 22 – 24, phallus. 14, 16, 21, 23, lateral view; 15, 20, 22, ventral view; 24, dorsal view. Scale bar of 14, 15 = 1.00 mm; of 16 = 0.77 mm; of 17 – 19 = 0.25 mm; of 20, 21 = 0.40 mm; of 22 – 24 = 0.29 mm