Diamella arrowi ( Jedlicka , 1935a) Shi & Zhou & Liang, 2013

Shi, Hongliang, Zhou, Hongzhang & Liang, Hongbin, 2013, Taxonomic synopsis of the subtribe Physoderina (Coleoptera, Carabidae, Lebiini), with species revisions of eight genera, ZooKeys 284, pp. 1-129 : 45-46

Diamella arrowi ( Jedlicka, 1935a) comb. n. Habitus: Fig. 48 male genitalia: Figs 78 102

Diamella arrowi Jedlička 1935a: 15 (original: Lachnoderma ; type locality: Philippines; holotype deposited in NHML); Jedlička 1963: 305 ( Allocota ); Kirschenhofer 1996: 764 ( Allocota ).

Type examined.

Holotype of Lachnoderma arrowi Jedlička, by original designation (NHML): male, body length = 7.3 mm, board mounted, "Philippine Is. / Coll. Bottcher. / B. M. 1929-201"; " 96 "; “Type” [round label with red ring]; " Lachnoderma / Arrowi / Jedl. sp. n. / det. ING. JEDLIČKA” [pink label] [Figs 48, 78, 102].

Notes on type.

The original literature clearly indicated that this specimen ( Fig. 48 ) is the holotype. But precise locality was not provided.

Diagnosis.

Vertex moderately tumid, not forming horn-like humps at posterior supraorbital seta insertions; pronotum front angles not narrowed, lateral margins completely rounded in middle; elytra dark blue, strongly metallic; elytra with striae very shallow, with accessory setae only on odd intervals. Male genitalia of this species resemble Diamella cupreomicans , but: (1) apical lamella very short and wide, apex rounded; (2) in lateral view, median lobe of aedeagus slender, ventral margin less expanded near base.

Description.

Body length 7.3 mm; head and pronotum reddish brown, with luster but not metallic, lateral explanate areas of pronotum paler; elytra metallic blue with disc somewhat reddish brown; mouthparts and antennae reddish brown, apices of terminal labial palpomeres yellow; legs brown, tarsomeres slightly paler; ventral side brownish. Head without microsculpture or punctures, sparsely pubescent on vertex; tempora slightly longer than half length of eyes; vertex moderately tumid, posterior supraorbital setae distant from eyes, seta insertions slightly humped, but not horn-like; labrum slightly widened to apex, apical margin deeply emarginate. Pronotum slightly wider than head, widest slightly before middle; ratio PW/PL 1.45; pronotal base briefly but distinctly lobed; front angles wide; lateral margins strongly expanded in middle, completely rounded, slightly sinuate before hind angles; hind angles subrectangular, hardly projected; disc slightly convex, microsculpture indistinct; lateral explanate areas wide and even; basal foveae shallow; disc nearly impunctate, with a few punctures along median line and in basal foveae; disc with long setae except area along median line, some setae distributed to middle of lateral explanate areas; lateral margins with long accessory setae through their full lengths, sparser after middle; median line distinct, nearly reaching basal and apical margins; disc not rugose. Elytra wider than pronotum, shoulders not narrowed, hind wings well developed; elytral lateral borders narrow, not reflexed up; striae very shallow, finely punctate; scutellary intervals with three large pores (basal pores); intervals flat, without microsculpture, odd intervals with secondary pores, more abundant on 7th interval; primary pores indistinct among secondary pores, 3rd and 5th intervals with some larger pores distinguishable; setae not present along striae; umbilical series of 9th interval composed of 15 pores; disc without distinct depression; lateral margins slightly depressed at basal third; 7th and 8th intervals slightly tumid near apex; elytral lateral margins with dense and fine setae; epipleura pubescent. Ventral side. Prosternum with long pubescence, proepisterna glabrous; mesosternum nearly glabrous; abdomen hairy. Male genitalia with median lobe of aedeagus straight and flat, gently expanded to apex; dorsal side slightly pubescent subapically; left lateral margin slightly curved in middle; apical orifice opened apically; apical lamella placed on right side, short and rounded, distinctly wider than length in dorsal view; internal sac with main flagellum thick and slightly corkscrewed, distinctly grooved ventrally, nearly reaching apical orifice; trumpet-form expansion strongly expanded, nearly half length of main flagellum ( Fig. 78 ). Female genitalia unknown.

Distribution

( Map 5 ). Only known from the type locality, the Philippines.

Figures

Map 5. Known distribution of genus Diamella: ● Diamella cupreomicans (Oberthuer) ◆ Diamella kaszabi (Jedlicka) ★ Diamella arrowi (Jedlicka).

Figure 78. Median lobe of male genitalia, right-lateral, ventral, left-lateral, dorsal views of Diamella arrowi (Jedlicka), holotype.

Figures 43 - 48. Type materials, scale bars = 2.0 mm: 43 Holotype of Anchista pilosa sp. n. 44 Holotype of Metallanchista laticollis sp. n. 45 Holotype of Diamella kaszabi Jedlicka [= Diamella kaszabi (Jedlicka)] 46 Lectotype of Calleida cupreomicans Oberthuer [= Diamella cupreomicans (Oberthuer)] 47 Lectotype of Allocota aerata Bates [= Diamella cupreomicans (Oberthuer)] 48 Holotype of Lachnoderma arrowi Jedlicka [= Diamella arrowi (Jedlicka)].

Figures 95 - 110. Left and right parameres of male genitalia, scale bars = 0.2 mm: 95 Paraphaea binotata (Dejean), a specimen from Guangxi 96 Paraphaea minor sp. n., holotype 97 Anchista brunnea (Wiedemann), a paralectotype of picea Chaudoir 98 Anchista pilosa sp. n., holotype 99 Metallanchista laticollis sp. n., holotype 100 Physodera amplicollis van de Poll, a specimen from Taiwan 101 Diamella cupreomicans (Oberthuer), a specimen from Yunnan 102 Diamella arrowi (Jedlicka), holotype 103 Allocota aurata (Bates), a specimen from Tonkin 104 Allocota aurata (Bates), a specimen from Shaanxi 105 Allocota bicolor sp. n., holotype 106 Lachnoderma asperum Bates, a specimen from Taiwan 107 Dasiosoma ivorense Basilewsky, a paratype from Cote d'Ivoire 108 Dasiosoma quadraticolle sp. n., holotype 109 Orionella kathmanduensis (Kirschenhofer), a specimen from Nepal 110 Endynomena pradieri (Fairmaire), a specimen from Fujian.