Ichneumonopsis hancocki, Freidberg & Kovac & Shiao, 2017

Freidberg, Amnon, Kovac, Damir & Shiao, Shiuh-Feng, 2017, A revision of Ichneumonopsis Hardy, 1973 (Diptera: Tephritidae: Dacinae: Gastrozonini), Oriental bamboo-shoot fruit flies, European Journal of Taxonomy 317, pp. 1-23 : 15-19

Ichneumonopsis hancocki sp. nov.

urn:lsid:zoobank.org:act:0189FDE4-39B5-4F52-9C15-7777015C5006

Figs 1 , 3 , 5–6 , 8 , 11 , 15–17

Diagnosis

This species is similar to I. burmensis , differing from it primarily in its smaller size, darker colouration (e.g., face of male mostly or entirely black, compared with predominantly yellow in I. burmensis ) and in all three femora being extensively spinose in both sexes (only forefemur with only about four spines in I. burmensis ). It is also similar to I. taiwanensis sp. nov. in its relatively small size, but it differs from this species by the more restricted dimidiate wing pattern and by all femora being spinose (wing pattern extended-dimidiate and only forefemur spinose in I. taiwanensis sp. nov.).

Etymology

This species is named after D.L. Hancock, a friend and prolific tephritidologist, who contributed much to the knowledge on Gastrozonini , including useful revisions of this group (Hancock 1999; Hancock & Drew 1999).

Material examined

Holotype

MALAYSIA: ♂, Selangor, “Old Gombak Road”, on stump of freshly cut bamboo shoot of Gigantochloa scortechinii , 17 Oct. 2003, P. Dohm leg., pinned directly and in good condition [ M03/1096 ] ( SMF).

Paratype

MALAYSIA: 1 ♀, State of Selangor, Ulu Gombak, W Malaysia, 4 Jun. 1970, James E. Tobler leg. [Genus and sp. prob. new, det D.E Hardy 1985. // Related to Ichneumonopsis ] original label, written with pencil on paper ( CAS).

Description

Only differences from I. burmensis are noted.

Head

COLOURATION. Ocellar and orbital spots united; frontal, genal and occipital dark spots similar to those of I. burmensis , although some of these less obvious in female paratype; male face with one lateral spot, and entire large bulging triangular central area black; parafacial spots lacking; female face only with ventral margin blackish, extending slightly dorsomedially as small triangle.

Thorax

COLOURATION. Dark dorsocentral vitta divided into two parts: short and wide oval presutural spot clearly separated from postsutural vitta-like section; these sections both unite along scutoscutellar suture and at level of supra-alar seta, thus enclosing (pair of) yellow oval spots between dorsocentral and median vittae; median vitta distinctly broadened posteriorly, particularly in posterior quarter where it merges

with black transverse scutoscutellar band. Pleural pattern as in I. burmensis , although dark extension “into” forecoxa lacking and forecoxa entirely yellow.

Legs

All femora spinose both anteroventrally and posteroventrally (spines mixed with regular setae), although posteroventral row with generally longer spines, and rows of spines denser and longer in male than in female, extending in male along distal half of femur or more, whereas in female extending along distal 0.33 almost to middle of femur. Male (only approximate numbers as spines tend to grade to regular setae): forefemur: 11–12 spines posteroventrally and 9–10 spines anteroventrally; midfemur: 20 and 15, respectively; hindfemur: 20 and 20, respectively; in addition ventral surface of midfemur and hindfemur centrally with additional setae or spines interspaced between two major rows. Female: spines considerably shorter than in male and more difficult to count, especially as tibiae are folded over respective femora, hiding some spines. Female’s numbers appear to be half of male numbers or even fewer. Colouration: forecoxa entirely yellow; forefemur with incomplete brownish ring at distal 0.4; foretibia, and also other tibiae, entirely brown or brownish; foretarsus, and also other tarsi, brownish, except metatarsi yellow; midfemur at nearly distal half with incomplete ring, more distinct at posterior aspect; hindfemur brown to blackish at approximately basal half, more obvious ventrally, with yellow gap dorsally; similar, but smaller and paler incomplete ring at distal 0.33 of femur.

Wing

VENATION. Posterodistal lobe of cell bcu 1.5–2.0 times as long as vein A 1 +Cu 2.

PATTERN. Marginal band uniformly yellow, not particularly darker around apical section of vein R 4+5.

Abdomen

As for genus; terminalia not dissected.

Measurements (length in mm)

Male: body: 11.0; wing: 10.2; female: body, including oviscape: 16.8; wing: 10.0; oviscape: 7.3.

Distribution

West Malaysia.

Comments

Being singletons, the holotype and paratype were not dissected. The I. hancocki sp. nov. male was collected by Patrick Dohm on a freshly cut bamboo shoot of Gigantochloa scortechinii . The bamboo shoot was about 2.5 – 3.5 m high and the upper part of the shoot (ca 80 cm long) was cut off and placed on the ground. The I. hancocki sp. nov. male alighted at the cut surface of the upright bamboo stump about half an hour after the apex of the shoot was cut off.

Figures

Fig. 1. Collecting localities of Ichneumonopsis spp.

Figs 2–4. Ichneumonopsis spp., habitus. 2. I. burmensis Hardy, 1973, ♀. 3. I. hancocki sp. nov., holotype, ♂. 4. I. taiwanensis sp. nov., holotype, ♀.

Figs 5–6. I. hancocki sp. nov., head, anterior view. 5. ♂. 6. ♀.

Figs 7–9. Ichneumonopsis spp., head and thorax, dorsal view. 7. I. burmensis Hardy, 1973. 8. I. hancocki sp. nov. 9. I. taiwanensis sp. nov.

Figs 10–12. Ichneumonopsis spp., thorax, lateral view. 10. I. burmensis Hardy, 1973. 11. I. hancocki sp. nov. 12. I. taiwanensis sp. nov.

Figs 13–17. Ichneumonopsis spp., legs. 13. I. burmensis Hardy, 1973, foreleg. 14. I. taiwanensis sp. nov., foreleg. 15. I. hancocki sp. nov., foreleg. 16. I. hancocki sp. nov., midleg. 17. I. hancocki sp. nov., hindleg.