Epitoxicoris allisonae, Published, 2007

WALL, MICHAEL A., 2007, A revision of the Solomonius-group of the stinkbug tribe Halyini (Hemiptera: Pentatomidae: Pentatominae), Zootaxa 1539 (1), pp. 1-84 : 46-48

Epitoxicoris allisonae sp. nov.

( Figs. 2C , 25 A-C, 26A-C, 27)

Holotype. Male. SOLOMON ISLANDS: Guadalcanal, Highway 50, Themeda, 10 December 1962, coll. M. McQuillan. Deposited in The Natural History Museum - London.

Diagnosis. Distinguished by olivaceous coloration and male proctiger with distal margin triangularly emarginated ( Fig. 25A ). In females the posterior margin of ninth gonocoxae is smoothly convex.

Description. Body 2X longer than broad ( Fig. 2C ). Anteroventral margin of bucculae strongly produced dorsally. Labium elongate; segment ratios 1:1.6:1.6:1. Pronotum with anterolateral margins subentire, some vague crenulations anteriorly; anterolateral margins slightly carinate. Lateral margins of scutellum constricted distally before expanding into flattened disc. Mesosternum slightly sulcate. Metafemora with row of small ventral tubercles.

Color. Ground color straminous with rusty, black, and pale green mottling. Antennal segments I–II dorsolaterally testaceous; segments III–IV testaceous throughout. Posterior half of pronotum dark with median pale band. Anterolateral excavations of scutellum black. Membrane of forewing clear to dusky. Labium straminous to testaceous; apical portion of 4th segment castaneous. Venter of abdomen pale with dark spiracles. Legs pale green; tubercles of profemora testaceous.

Male. Ventral margin of pygophore trilobed, middle lobe smaller than laterals ( Fig. 25A ). Basal sclerite of proctiger elongate, rectangular, over half length of dorsolateral lobes ( Fig. 25C ). Proctiger apically emarginate with triangular emargination ( Fig. 25A ). Tubercle of medial penile plates on proximal margin ( Fig. 26A–B ).

Female. Eighth gonocoxa roughly semicircular. Posterior margin of ninth gonocoxae smoothly rounded. Ninth laterotergites longer than broad, distally acute, surpassing posterior margin of eighth tergite ( Fig. 26C ).

Measurements. Males (n=3): body length 13 SD 0.1 (12.9–13.2), anterior pronotal width 3 SD <0.1 (3.0– 3.1), humeral width 6.9 SD 0.1 (6.8–7.0), scutellar length 4.8 SD 0.1 (4.7–5.0), medial length of sixth sternite (fifth visible) 0.8 SD <0.1 (0.8–0.8), medial length of seventh sternite (sixth visible) 2.5 SD <0.1 (2.5–2.6). Females (n=1): body length 13.7 SD, anterior pronotal width 3.2, humeral width 7.4, scutellar length 4.6, medial length of sixth sternite (fifth visible) 1.1, medial length of seventh sternite (sixth visible) 2.0. Appendages in Table 4.

Etymology. The species is named for Ms Allison Teem, the author's best friend, companion, and supporter. The epithet is formed as a noun in the genitive.

Paratypes. SOLOMON ISLANDS: Guadalcanal, Mt. Austen , [9° 28' S, 159° 59’ E], 13 November 1964, coll. P. Greenslade - 1 ♀, 2 ♂♂ ( BMNH) .

Distribution. Central Guadalcanal ( Fig. 27 ).

Figures

FIGURE 2. Anchises, Babylas, Epitoxicoris, and Elemana species, habitus. A. A. parvulus (Westwood), B. B. bihamatus, C. Ep. allisonae sp. nov., D. Ep. trimaculatus sp. nov., E. El. propria Distant.

FIGURE 25. Ventral, lateral, and dorsal views of pygophore of species of Epitoxicoris. A-C. E. allisonae sp. nov., D-F. E. trimaculatus sp. nov..

FIGURE 26. Ventral and lateral views of aedeagus and external female genitalia of species of A-C. E. allisonae sp. nov., D-F. E. trimaculatus sp. nov..

FIGURE 27. Distribution of Epitoxicoris allisonae sp. nov., E. trimaculatus sp. nov., Solomonius micrometallicus sp. nov., and S. schaeferi sp. nov. in the Solomon Islands.