Curculio robustus

Frank W. Pelsue, Jr. & Zhang, Runzhi, 2000, A Review Of The Genus Curculio L. From China With Descriptions Of New Taxa. Part I (Coleoptera: Curculionidae: Curculioninae: Curculionini), The Coleopterists Bulletin 54 (2), pp. 125-142 : 128-129

Key to the Species of the C. ROBUSTUS Group, C. FLAVESCENS Group and remaining Groups of CURCULIO from China

1 Second segment of funiculus longer than the first segment ( Fig. 1 ) robustus Group -------------------------------------------------------------------------------------------------- 2

1' Second segment of funiculus equal to or shorter in length than the first segment -------------------------------------------------------------------------------------------------------- 7

2(1) Hind femoral length exceeding apex of abdomen by width of hind femoral club or greater ( Fig. 2 ) ------------------------------------------------------------------ 4

2' Hind femur not exceeding apex of abdomen by more than width of hind femoral club ( Fig. 3 ) ----------------------------------------------------------------------------- 3

3 Scutellum small, linear, white; profemur bearded ventrally; hind femoral tooth medium; metauncus as long as or longer than tarsal claw ( Fig. 13 ) 8.6 mm in length ------------------------------------------------------- C. robustus

3' Scutellum larger rounded; profemur not bearded ventrally; hind femoral tooth large wedge shaped ( Fig 4 ); hind uncus not as long as tarsal claw, 6.10 mm in length ---------------------------------------------- C. beverlyae

4(2) Rostrum of female abruptly emerging from head ( Fig. 5 ), male appears more gradual but arises below dorsal margin of eye usually with distinct impression between base of rostrum and frons in lateral view ( Fig. 6 ) ------------------------------------------------------------------------------------------------------- 5

4' Rostrum gradually emerging or continuous with head dorsal margin even with dorsal margin of eye in male and female usually lacking distinct impression between base of rostrum and frons in lateral view ( Fig. 7 ) ------------------------------------------------------------------------------------------------------------------ 6

5(3) Mesosternal intercoxal process feeble or not visible; cuticle fuscopiceous, scales testaceous; 5.6 mm in length ----------------------- C. vivianae

5' Mesosternal intercoxal process prominent ( Fig. 8 ); vestiture piceous; scutellum black with cretaceous macula laterad; mesepimeron with dense cretaceous scales; elytra with broken fascia of cretaceous scales ( Fig. 11 ); 3.90–7.0 mm in length ---------------------------------------------------------------- ---------------------------------------------------------------------- C. deceptor panthaicus (Heller)

6(5) Mesepimeron with dorsal macula of cretaceous scales; first and second sternites with large lateral cretaceous macula ( Fig. 21 ); 5.10 mm in length ------------------------------------------------------------------------------------------ C. cristinae

6' Mesepimeron lacking dorsal macula of cretaceous scales; first and second sternites unicolorous ( Fig. 23 ); 4.70 mm in length ------------ --------------------------------------------------------------------------------------------------------------------- C. fausti

7(1') First segment of funiculus twice as long as second ( Fig. 9 ); antennal club longer than funicular segments two through seven combined; 4.6 mm in length ----------------------------- C. flavescens , C. flavescens group

7' First segment of funiculus as long as or longer than second, may be twice as long as or longer than the second, but if so antennal club not longer than segments two through seven combined -------------------- 8

8(7') Rostrum gradually emerging or continuous with head ---------------------- 9

8' Rostrum abruptly emerging from head -------------------------------------------------- 10

9(8) Hind femur exceeding apex of abdomen --- C. alboscutellatus group

9' Hind femur not exceeding apex of abdomen ----------------------------------------- -------------------------------------------------------------------------------------- C. subfenestratus group

10(8') Hind femur exceeding apex of abdomen ----------------------------------------------- 11

10' Hind femur not exceeding apex of abdomen ---- C. sikkimensis goup

11(10) Hind femur exceeding apex of abdomen by more than maximum width of hind femoral club (measured from dorsal aspect) ( Fig. 2 ) -------------------------------------------------------------------------------------------------- C. dentipes group

11' Hind femur barely exceeding apex of abdomen by less than maximum width of hind femoral club -------------------------------- C. haroldi group

Figures

Fig. 1. Curculio vivianae. Arrows show second segment of funiculus longer than first.

Fig. 2. Shows hind femoral length longer than width of femoral club, in dorsal view, past apex of abdomen.

Fig. 3. Indicates hind femoral length shorter than width of femoral club.

Figs. 12–13. Curculio robustus male, habitus, dorsal and lateral views.

Fig. 4. Arrow indicates the wedge shaped femoral tooth as long as the width of the tibia, noting the large tooth.

Fig. 5. Curculio validus, female. Shows the abrupt emergence of the rostrum from the head.

Fig. 6. Curculio beverlyae, male. Shows the abrupt emergence of the rostrum from the head, noting the thickness at the base but still originating below the dorsal margin of the eye.

Fig. 7. Curculio cristinae, female. Illustrates the gradual emergence of the rostrum from the head note the dorsal margin of rostrum at or above the dorsal margin of eye, this occurs in both males and females.

Fig. 8. Curculio deceptor panthaicus. Arrow indicates the prominent mesosternal intercoxal process.

Figs. 10–11. Curculio deceptor panthaicus male, habitus dorsal and lateral views.

Figs. 20–21. Curculio cristinae female, habitus, dorsal and lateral views, holotype. Various scales.

Figs. 22–23. Curculio fausti male, habitus, dorsal and lateral views, holotype. Various scales.

Fig. 9. Arrows indicate the relative length of the first segment of the funiclus to the second. Various scales.