Stenopsocus makii Takahashi

Liang, Feiyang, Dai, Yuting, Yue, Lu, Li, Fasheng & Liu, Xingyue, 2015, DNA barcoding and taxonomic review of the barklouse genus Stenopsocus (Psocoptera: Stenopsocidae) from Taiwan, Zootaxa 4057 (2), pp. 191-209 : 204-206

Stenopsocus makii Takahashi

( Figs. 13–14 )

Stenopsocus makii Takahashi, 1938: 14 . Type locality: China ( Taiwan: Hori).

Diagnosis. This species is characterized by large-sized body, forewing without setae on Cu2 and transparent forewing with a large brown marking between R1 and R4+5.

Adult male. Body ( Fig. 13 a) length 3.74 mm, length from postclypeus to wing tip 6.42 mm. IO: 0.68 mm, d: 0.23 mm, IO/d=2.96, f1: 1.41 mm, f2: 1.10 mm, f3: 0.87 mm, FWL: 5.16 mm, FWW: 1.67 mm, HWL: 3.79 mm, HWW: 1.11 mm, t1: 0.49 mm, t2: 0.15 mm.

Colour (in alcohol). Head ( Figs. 13 c, d) dark brown, vertex with a trapezoid brown area. Postclypeus blackish brown, labrum laterally much paler, apex of maxillary palpus pale brown, remaining segments of maxillary palpus whitish.

Thorax dark brown. Leg whitish, with coxae, tibiae, apices of 1st tarsomeres, and entire 2nd tarsomeres brown. Abdomen white, genital segments brown.

Forewing ( Fig. 13 g) transparent. R dark brown, with narrow brown marking and a brown spot around branching point of R and Rs. Pterostigma yellow, posterior margin with brown marking, which extending to cell R2+3 and R4+5. Hindwing ( Fig. 13 h) immaculate.

Genital segments ( Figs. 14 a–d) strongly sclerotized. Epiproct ( Fig. 14 b) subtriangular. Paraproct semisclerotized, with 38 trichobothria. Endophallus ( Fig. 14 d) strongly sclerotized, external parameres robust, with some punctures on broadened toward apex, and not exceeding apex of aedeagal arch; aedeagal arch narrow. Hypandrium ( Fig. 14 c) sclerotized strongly.

Adult female. Body ( Fig. 13 b) length 2.90 mm, length from postclypeus to wing tip 5.45 mm. IO: 0.43 mm, d: 0.32 mm, IO/d=1.34, f1: 1.11 mm, f2: 1.05 mm, f3: 0.79 mm, FWL: 4.56 mm, FWW: 1.59 mm, HWL: 3.41 mm, HWW: 1.05 mm, t1: 0.52 mm, t2: 0.16 mm.

Colour similar to male, slightly paler. Forewing markings much larger than those in male. Abdomen with tergum purplish red, 3–5 segments laterally with white markings.

Genital segments ( Figs. 14 e–i) strongly sclerotized. Epiproct ( Fig. 14 f) subtriangular, sclerotized area similar to male. Paraproct with 29 trichobothria. External valve ( Fig. 14 h) short and robust, almost perpendicular to dorsal valve. Subgenital plate ( Fig. 14 g) with a broad sclerotized area.

Specimens examined. CHINA ( TAIWAN): Hualien, Pi-lu Sacred Tree (2150 m), 1 male, 3 females, 6.vi.2013, Liang Feiyang.

Distribution. Taiwan; Japan.

Remarks. This species differs from the other Taiwanese species of Stenopsocus by the big forewing marking.

Figures

FIGURE 13. Stenopsocus makii. a. male, habitus; b. female, habitus; c. male, frontal view of head; d. male, dorsal view of head; e. female, frontal view of head; f. female, dorsal view of head; g. forewing; h. hind wing. Scale bar = 0.5 mm.

FIGURE 14. Stenopsocus makii. a. male, genitalia, lateral view; b. male, epiproct; c. male, hypandrium; d. male, endophallus; e. female, genitalia, lateral view; f. female, epiproct; g. female, subgenital plate; h. female, gonapophyses; i. spermathecal sac. Scale bar = 0.05 mm.