Aperileptus albipalpus (Gravenhorst, 1829)

[New SJN: Tairiku-tsuya-hae-himebachi]

(Figs. 2A–C, 22I)

Plectiscus albipalpus Gravenhorst, 1829: 986 .

Aperileptus penetrans Förster, 1871: 76 .

Aperileptus fungicola Förster, 1871: 77 .

Aperileptus placidus Förster, 1871: 77 .

Aperileptus tutorius Förster, 1871: 77 .

Aperileptus vacuus Förster, 1871: 77 .

Aperileptus custoditor Förster, 1871: 78 .

Aperileptus euryzonus Förster, 1871: 78 .

Aperileptus exstirpator Förster, 1871: 78 .

Aperileptus frontalis Förster, 1871: 78 .

Aperileptus impacatus Förster, 1871: 78 .

Aperileptus conformis Förster, 1871: 79 .

Aperileptus vittiger Förster, 1871: 79 .

Phytodietus gracilis Provancher, 1875: 331 .

Proedrus delicatus Ashmead, 1897 in Slosson, 1897: 237.

Catastenus valerius Davis, 1897: 243 .

Aperileptus clypeatus Ashmead, 1902 in Slosson, 1902a: 6.

Aperileptus nigrovittatus Strobl, 1904: 123 .

Aperileptus nigricarpus Strobl, 1904: 124 .

Aperileptus clypeatus Cushman, 1922: 4 .

Aperileptus delicatus Cushman, 1922: 5 .

Diagnosis. Epicnemial carina absent ventrally (Fig. 22I). Maximum width of face 2.7–3.3 times as long as malar space. Ovipositor sheath, 1.3–1.6 times as long as hind tibia, 0.40–0.48 times as long as fore wing. T I more or less polished. Male hind femur without a dorsolateral pit. Face usually light brown or light spots below the antenna sockets (female: Fig. 2B) or entirely yellow (male). Metasomal tergites usually with a reddish-brown area (Figs. 2A, C). Fore wing length 3.5–5.5 mm.

Materials examined. JAPAN: EUM, F, Hokkaido. Sapporo City, Hitsujigaoka, 21–28. V. 2003, K. Konishi leg. (MsT) ; EUM, 2 F, ditto, 11–18. VI. 2003; EUM, F, 18–25. VI. 2003; EUM, F, ditto, 25. VI. – 2. VII. 2003; EUM, F, ditto, 2–9. VII. 2003 .; EUM, 2 F, 11–18. VII. 2011; EUM, 2 F, Hokkaido, Sapporo City, Usubetsu, 29. IV. – 24. V. 2012, N. Kuhara leg. (MsT) ; NARO, F, Hokkaido, Kumaishi, Kenichi-gawa, Iwafuchi-zawa, 10–21. VIII. 1995, Y. Ito & T. Ito leg. (MsT) ; NARO, F, Hokkaido, Eniwa, Izari, Ichankoppe-zawa, 20–30. VI. 1995, Y. Ito leg. (MsT) ; KPM-NK 81184, F, Hokkaido, Sapporo City, Mt. Soranuma-dake, 14. VI. – 4. VII. 2007, A. Ueda leg. (MsT) . CRIMEA: ZISP, F (det. Rossem), Mezhhirya, 9. IX. 1980, D. R. Kasparyan leg.

Bionomics. Unknown in Japan. Some Mycetophila species ( Mycetophilidae) were recorded as hosts (Yu et al., 2016).

Distribution. Japan (Kunashiri Is. and Hokkaido); widely distributed in the Holarctic region (Yu et al., 2016).

Remarks. This is the first record of this species from Hokkaido.